A1GP Car Manual Issue 1 3
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Transcript of A1GP Car Manual Issue 1 3
7/27/2019 A1GP Car Manual Issue 1 3
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Page 3 of 99
2.3.3. TOE...............................................................................................................................................................68
2.3.4. SPRINGS & DAMPERS................................................................................................................................ 69
2.3.5. 3rd SPRING...................................................................................................................................................75
2.3.6. ANTIROLL BAR STIFFNESS ..........................................................................................................................76
2.4. RIDE HEIGHT CHECK AND REFERENCES ........................................................................................... 78
2.4.1. GENERAL CAR DIMENSIONS....................................................................................................................79
2.4.2. REAR QUICK LIFT JACK AND STARTER ARCHITECTURE REFERENCES.................................................80
3. AERODYNAMICS................................................................................................................................82
3.1. FRONT WING ASSEMBLY...................................................................................................................... 82
3.1.1. FRONT WING MAIN PLANE ......................................................................................................................82
3.1.2. FRONT WING FLAP .................................................................................................................................... 83
3.1.3. FRONT WING END PLATE .......................................................................................................................... 84
3.2. MAIN BODY & UNDERWING............................................................................................................... 85
3.3. BARGE BOARDS.................................................................................................................................... 86
3.4. SIDEPODS............................................................................................................................................... 87
3.5. REAR WING ASSEMBLY ........................................................................................................................ 87 3.5.1. REAR WING.................................................................................................................................................88
3.5.2. REAR WING MAIN-PLANE AND FLAP IN POSITION 5 (HIGH DOWNFORCE) ....................................88
3.5.3. REAR WING MAIN-PLANE ADJUSTMENT RANGE..................................................................................89
3.6. AERODYNAMIC DATA......................................................................................................................... 90
3.7. POLAR DIAGRAM OF THE CAR.......................................................................................................... 91
3.8. AERO MAPS........................................................................................................................................... 92
3.8.1. LOW DOWNFORCE AERO MAP..............................................................................................................92
3.8.2. HIGH DOWNFORCE AERO MAP ............................................................................................................. 93
3.9. COOLING INLET BLANKING ................................................................................................................ 94 3.10. BRAKE DUCTS SELECTION ................................................................................................................... 94
3.11. POLAR DIAGRAM OF THE MAIN ADJUSTABLE DEVICES ................................................................ 95
3.11.1. FRONT FLAP ................................................................................................................................................ 95
3.11.2. REAR BI-PLANE ........................................................................................................................................... 96
4. CHASSIS ADJUSTMENTS .....................................................................................................................97
4.1. STEERING ASSEMBLY: ........................................................................................................................... 97
4.2. NOSE BOX MOUNT............................................................................................................................... 97
4.3. EXTRACTABLE SEAT............................................................................................................................... 97
4.3.1. CARBON SHELL AND LEG STRAP POSITION...........................................................................................97 4.3.2. CARBON SHELL .......................................................................................................................................... 98
4.3.3. QUICK RELEASE BLACK SOCKET POSITION............................................................................................99
4.3.4. SIDE BELTS....................................................................................................................................................99
4.3.5. DRIVER SEAT DIMENSION .........................................................................................................................99
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Page 4 of 99
1. GENERAL INFORMATION
A1GP POWERED BY FERRARI CHASSIS MANUAL
1.1. GENERAL DISCLAIMER
Motor sport is HIGHLY DANGEROUS and consequently this manual sets out guidance to assist with
the safe and correct operation, use and maintenance requirements of the chassis of the A1GP
car . The nature of motor sport places the chassis under significant stress and pressure which can
create abnormal and extreme operating conditions, also accidents can happen. This manual isprovided as a guide only, without representation or warranty and is provided to users on the basis
that each user accepts all risks associated with driving a motor sport vehicle and taking part in a
motor sport event and to the fullest extent permitted by law, shall be solely responsible for all loss
or damage occurring to his or her person or property.
A1GP suggests that, under normal operating conditions, the structural components of the chassis
when new, would not show material failure before the A1GP car has completed in excess of 8000
Km. This mileage guide is provided subject to all necessary maintenance and regular safety
checks being undertaken as appropriate and provided the car is not involved in accidents. A1GP
is not responsible for incorrect chassis repairs, or for chassis repairs made outside of A1GP’s
designated factory, or by suppliers other than those appointed and recommended by A1GP or in
centres not authorized by A1GP. The chassis should be tested and inspected for structural failure
not less than 12 months after delivery from the A1GP factory and then each subsequent 12
months and/or upon completing more than 8000 Km and after any major accident. The chassis
should also be checked if A1GP or A1GP’s appointed suppliers advice as such. All testing and
material maintenance requirements of the chassis should be completed by A1GP or A1GP’s
appointed suppliers.
1.2. CONTROLLED PARTS
Teams are not allowed to use, test or run chassis parts not supplied by A1GP except for the parts related to
driver comfort in the cockpit.
Main controlled parts are the following ones:
• Springs (front: between 1000 and 1800 lb/in, rear: between 800 and 1500 lb/in with displacement spacers).
• PENSKE racing shocks, dampers VDP-45 (no packers, bump stops allowed)
• Differential ramps: 45°/65°; 30°/60°; only allowed
• Front and rear anti roll bar: Ø 6.5mm, Ø 9.0mm, Ø13.5mm and roll free bar; only allowed
• Roll free RHC 3rd spring system: rubber donuts and nylon spacer supplied by A1GP: only allowed• AP Carbon / Carbon Clutch (140mm diameter) part number CP7143-CE02-SC
• Brembo Carbon discs and carbon brake pads
• Brembo Brake master cylinders: Ø16mm, Ø17.4mm, Ø19mm, Ø20.6mm, Ø22.2mm
• Seat harness
• Steering Pinion gears : 6 teeth 37mm/rev, 7teeth 43.2mm/rev
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1.3. CHASSIS
Wheelbase: 3100 mm
Front Track: 1690.4 mm @ 3deg camber
Rear Track: 1632.0 mm @ 1.5deg camber
Weight: Approx 715kg including driver, race ready (excluding fuel) Weight: Approx 640kg painted, oil and water, no driver
Front and rear suspension: Double wishbone with pushrod operated coil over damper units.Adjustable ride height, cambers and toe, Non adjustable Geometry
Anti-roll bar: Multi adjustable, quick change front and rear roll bars Chassis: Carbon fibre skins, aluminium honeycomb core. Tested to meet allapplicable FIA crash safety standards
Bodywork: Light weight composite bodywork Gearbox: Xtrac A1GP Six-speed longitudinal sequential. Gear selection via a
Magneti Marelli paddle shift system Drive line: Pankl Tripod jointed driveshafts Brakes: Brembo carbon discs, six-pot aluminium calipers Dampers: Penske VDP-45, two-way adjustable Wheels: OZ Front 13” dia. X 12” Rear 13” dia. X 14” Steering: Titan angle drive bevel and two-pinion ratio’s Steering wheel: 280mm diameter carbon, with mounted LCD dash Instrumentation and display: Magneti Marelli mounted display unit
Multi-channel logging facility for engineering analyseSeat belt: FIA approved SABELT six-point safety harness Fuel cell: ATL fuel cell approximately 140-litres capacity and designed to take up
to 50 per cent ethanol Clutch: AP three-plate carbon/carbon with steel hub Tyres: Michelin control slick and treaded wet tyres
1.4. ENGINE
Configuration: 90 degree V8
Displacement: 4500cc Width: 666.5 mm (max L&R cam covers width)
Height: 446(from bottom plane to max cam covers height) Length: 569 mm (from front pulley bolt to rear plane engine block flange) Weight: 165kg Cylinder block: Die cast aluminium alloy
Cylinder head: Sand cast aluminium alloy
Valve train: Four overhead camshafts
Four valves per cylinder
Engine management: Bosch MED 9.6 Injection: Gasoline direct injection Spark plugs: NGK Fuel: Shell E10 102 RON
Max torque: 406 lbs ft 550 Nm @6250rpm Max power: 600 bhp 448 Kw @9000rpm
Max RPM 8200Max RPM Push to Pass 8700
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1.5. FLUIDS LEVELS AND CHARACTERISTICS
The Fluids levels and References are as follows:
Description CapacityMinimum
LevelManufacturer Notes
Engine Oil 4.5 litre 3.5 litre Shell Helix 10w-60 Capacity in oil tank
Gearbox Oil 2.0 litre Shell Helix 75w-90 Capacity from dry
Fuel 140 litre Shell LM 24
Cooling Fluid 10.2 litreShell Q Quench 4% in deionised
water
Brake Fluid Brembo LCF 600 Plus Recommended
Hydraulic Fluid Shell Donax TX
Clutch Fluid As hydraulic system
1.6. FRONT SUSPENSION
1.6.1. LOWER WISHBONE
Front Lower Wishbone Nominal Lengths are in mm:
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1.6.2. CASTOR
When the car is flat (front and rear ride height are identical ) and the front upright inclination is 0.00°
[APPARENT CASTOR ] the effective castor angle is 6.06° [BUILT-IN CASTOR ].
With different front to rear ride heights, castor angle changes because of the pitch angle of the car.
For instance, with 25 mm front and 55mm rear ride heights, measured at wheel axis, (wheelbase is 3100 mm)the pitch angle is 0.55° and castor angles (both apparent and total) are reduced.
Pitch angle : [(55-25)/3100] • 57.296 = 0.55°
Total Castor angle : 6.06° - 0.55° = 5.51°
Apparent Castor angle : 0.00° - 0.55° = -0.55°
There is no Castor Adjustment.
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1.6.3. FRONT ROCKER ASSEMBLY
The Front Rocker Assembly is:
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1.7. REAR SUSPENSION
1.7.1. DRIVESHAFT
The driveshaft assembly is as following:
The detailed section of the Upright Tripod:
Note: Front and rear uprights bearing assembly re-builds (servicing) will be undertaken by Pankl only.
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1.7.2. REAR ROCKER ASSEMBLY
The Rear Rocker Assembly is:
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1.8. FRONT SUSPENSION GEOMETRY RESULTS
Reference points: Z “0” Bottom of chassis (top of wooden skid)
Notations:
• Wheel Def. : Wheel movement
• Ride Height: The distance from the bottom of the chassis Z “0” line to the ground plane.
• R.C. Height: The distance from the roll centre to the ground plane.
• R.C. to 0-L : The distance from the bottom of the chassis Z “0” line to the roll centre, a
negative number denotes that the roll centre is above the chassis Z “0” line.
• R.C. Parity: The percentage of roll centre change in heave relative to the chassis, 100%
would mean the roll centre move the same distance as the chassis moves in heave, more
than 100% i.e. 120% means the roll centre movement is more then the chassis moves in
heave, and less than 100% i.e. 80% means the roll centre movement is less than the chassis
moves in heave.
• Cam. Angle: The camber angle of the wheel.
• Cam. Change: The camber angle change of the wheel.
• VSAL Lateral: The virtual swing axle length, lateral.
• VSAL Long: The virtual swing axle length, longitudinal.
• Scrub: The change in lateral wheel movement in heave from the centre line of the car.
• Unit Wheel rate: The Unit wheel rate is defined as the wheel rate for a spring rate of 1.
Mathematically it is defined as 1/VR2
.
• Rising Rate: The rising rate is defined firstly as the increase in wheel rate in heave expressed
as a percentage.
• Inst Rising Rate: The instant rising rate is defined as the rate of increase or gradient of the
rising rate curve.
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FRONT SPRING CHARTS
Wheel
Def.
Spring
Def.
Force
Ratio
Vel.
Ratio V.R.^2
n t
Wheel
Rate
Rising
Rate
nst
Rising
Rate
mm mm ratio ratio ratio ratio % %
-25.00 -25.31 1.03 0.97 0.94 1.06 6.13 -0.44
-20.00 -20.18 1.02 0.98 0.96 1.04 4.16 -0.35
-15.00 -15.09 1.01 0.99 0.97 1.03 2.61 -0.27
-10.00 -10.04 1.01 0.99 0.98 1.02 1.43 -0.20
-5.00 -5.01 1.00 1.00 0.99 1.01 0.58 -0.14
0.00 0.00 1.00 1.00 1.00 1.00 0.00 -0.09
5.00 5.00 1.00 1.00 1.00 1.00 -0.35 -0.05
10.00 9.99 1.00 1.00 1.00 1.00 -0.51 -0.02
15.00 14.98 1.00 1.00 1.00 1.00 -0.53 0.0120.00 19.98 1.00 1.00 1.00 1.00 -0.44 0.02
25.00 24.97 1.00 1.00 1.00 1.00 -0.30 0.03
30.00 29.97 1.00 1.00 1.00 1.00 -0.13 0.03
35.00 34.97 1.00 1.00 1.00 1.00 0.01 0.02
40.00 39.98 1.00 1.00 1.00 1.00 0.08 0.0045.00 44.99 1.00 1.00 1.00 1.00 0.04 -0.02
50.00 49.99 1.00 1.00 1.00 1.00 -0.16 -0.06
25.40 25.37 1.00 1.00 1.00 1.00 -0.28 0.03
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FRONT ARBs CHARTS
Heave
Def.
Def.
Def.
orce
Ratio 1
orce
Ratio 2
orce
Ratio 3
e .
Ratio1
e .
Ratio2
e .
Ratio3
mm mm mm mm ratio ratio ratio ratio ratio ratio-25.00 -24.95 -25.21 -25.47 1.00 1.02 1.04 1.00 0.98 0.97
-20.00 -19.93 -20.12 -20.31 1.00 1.01 1.03 1.00 0.99 0.97
-15.00 -14.93 -15.06 -15.19 1.00 1.01 1.02 1.00 0.99 0.98-10.00 -9.94 -10.02 -10.10 1.00 1.01 1.02 1.00 0.99 0.99
-5.00 -4.97 -5.00 -5.04 0.99 1.00 1.01 1.01 1.00 0.99
0.00 0.00 0.00 0.00 0.99 1.00 1.01 1.01 1.00 0.995.00 4.96 4.99 5.02 0.99 1.00 1.00 1.01 1.00 1.00
10.00 9.92 9.97 10.02 0.99 1.00 1.00 1.01 1.00 1.0015.00 14.89 14.95 15.01 0.99 1.00 1.00 1.01 1.00 1.00
20.00 19.86 19.93 20.00 1.00 1.00 1.00 1.00 1.00 1.00
25.00 24.84 24.91 24.98 1.00 1.00 1.00 1.00 1.00 1.0030.00 29.84 29.91 29.98 1.00 1.00 1.00 1.00 1.00 1.00
35.00 34.87 34.93 34.98 1.01 1.01 1.00 0.99 0.99 1.0040.00 39.93 39.97 40.01 1.02 1.01 1.01 0.99 0.99 0.99
45.00 45.02 45.04 45.05 1.02 1.02 1.01 0.98 0.98 0.99
50.00 50.17 50.15 50.14 1.03 1.03 1.02 0.97 0.97 0.9825.40 25.24 25.31 25.38 1.00 1.00 1.00 1.00 1.00 1.00
Heave V.R1.^2 V.R2.^2 V.R3.^2
Wheel
Rate 1
Wheel
Rate 2
Wheel
Rate 3
Rising
Rate 1
Rising
Rate 2
Rising
Rate 3
mm ratio ratio ratio ratio ratio ratio % % %-25.00 0.99 0.96 0.93 1.01 1.04 1.07 2.42 4.32 6.20
-20.00 1.00 0.97 0.95 1.00 1.03 1.06 1.77 3.21 4.63
-15.00 1.00 0.98 0.96 1.00 1.02 1.04 1.19 2.21 3.22-10.00 1.01 0.99 0.97 0.99 1.01 1.03 0.68 1.33 1.97
-5.00 1.01 1.00 0.98 0.99 1.00 1.02 0.28 0.59 0.89
0.00 1.01 1.00 0.99 0.99 1.00 1.01 0.00 0.00 0.005.00 1.02 1.01 1.00 0.98 0.99 1.00 -0.14 -0.42 -0.71
10.00 1.02 1.01 1.00 0.98 0.99 1.00 -0.12 -0.67 -1.2115.00 1.01 1.01 1.00 0.99 0.99 1.00 0.08 -0.73 -1.52
20.00 1.01 1.01 1.01 0.99 0.99 0.99 0.48 -0.57 -1.61
25.00 1.00 1.00 1.00 1.00 1.00 1.00 1.11 -0.19 -1.4730.00 0.99 1.00 1.00 1.01 1.00 1.00 1.98 0.42 -1.10
35.00 0.98 0.99 0.99 1.02 1.01 1.01 3.11 1.29 -0.49
40.00 0.97 0.98 0.99 1.03 1.02 1.01 4.55 2.44 0.3845.00 0.95 0.96 0.97 1.05 1.04 1.03 6.30 3.88 1.52
50.00 0.94 0.95 0.96 1.07 1.05 1.04 8.40 5.64 2.95
25.40 1.00 1.00 1.00 1.00 1.00 1.00 1.17 -0.15 -1.45
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FRONT 3RD SPRING CHARTS
Heave
ARB1
Def.
ARB2
Def.
ARB3
Def.
Force
Ratio 1
Force
Ratio 2
Force
Ratio 3
Vel.
Ratio1
Vel.
Ratio2
Vel.
Ratio3
mm mm mm mm ratio ratio ratio ratio ratio ratio
-25.00 -24.43 -24.68 -24.93 0.97 0.98 1.00 1.03 1.02 1.00-20.00 -19.58 -19.76 -19.95 0.97 0.98 1.00 1.03 1.02 1.00
-15.00 -14.71 -14.84 -14.96 0.98 0.99 1.00 1.02 1.01 1.00
-10.00 -9.82 -9.90 -9.98 0.98 0.99 1.00 1.02 1.01 1.00-5.00 -4.92 -4.95 -4.99 0.98 0.99 1.00 1.02 1.01 1.00
0.00 0.00 0.00 0.00 0.99 0.99 1.00 1.01 1.01 1.005.00 4.93 4.96 4.99 0.99 0.99 1.00 1.01 1.01 1.00
10.00 9.88 9.93 9.98 0.99 0.99 1.00 1.01 1.01 1.00
15.00 14.84 14.90 14.96 0.99 1.00 1.00 1.01 1.00 1.0020.00 19.81 19.88 19.95 1.00 1.00 1.00 1.00 1.00 1.00
25.00 24.79 24.86 24.93 1.00 1.00 1.00 1.00 1.00 1.0030.00 29.79 29.85 29.92 1.00 1.00 1.00 1.00 1.00 1.00
35.00 34.79 34.85 34.90 1.00 1.00 1.00 1.00 1.00 1.00
40.00 39.80 39.84 39.88 1.00 1.00 1.00 1.00 1.00 1.0045.00 44.83 44.84 44.86 1.01 1.00 1.00 0.99 1.00 1.00
50.00 49.87 49.85 49.84 1.01 1.00 1.00 0.99 1.00 1.00
25.40 25.19 25.26 25.33 1.00 1.00 1.00 1.00 1.00 1.00
Heave V.R1.^2 V.R2.^2 V.R3.^2WheelRate 1
WheelRate 2
WheelRate 3
RisingRate 1
RisingRate 2
RisingRate 3
mm ratio ratio ratio ratio ratio ratio % % %
-25.00 1.07 1.04 1.01 0.94 0.96 0.99 -3.53 -1.84 -0.15-20.00 1.06 1.03 1.01 0.94 0.97 0.99 -2.71 -1.39 -0.09
-15.00 1.05 1.03 1.01 0.95 0.97 0.99 -1.94 -0.99 -0.05
-10.00 1.04 1.02 1.01 0.96 0.98 1.00 -1.24 -0.63 -0.02-5.00 1.04 1.02 1.00 0.97 0.98 1.00 -0.60 -0.30 0.00
0.00 1.03 1.02 1.00 0.97 0.98 1.00 0.00 0.00 0.00
5.00 1.02 1.01 1.00 0.98 0.99 1.00 0.56 0.27 -0.0110.00 1.02 1.01 1.01 0.98 0.99 0.99 1.07 0.52 -0.03
15.00 1.01 1.01 1.01 0.99 0.99 0.99 1.57 0.75 -0.0520.00 1.01 1.01 1.01 0.99 0.99 0.99 2.03 0.96 -0.09
25.00 1.00 1.01 1.01 1.00 0.99 0.99 2.49 1.16 -0.14
30.00 1.00 1.00 1.01 1.00 1.00 0.99 2.93 1.35 -0.1935.00 1.00 1.00 1.01 1.00 1.00 0.99 3.37 1.54 -0.26
40.00 0.99 1.00 1.01 1.01 1.00 0.99 3.82 1.72 -0.33
45.00 0.99 1.00 1.01 1.01 1.00 0.99 4.28 1.91 -0.41
50.00 0.98 1.00 1.01 1.02 1.00 0.99 4.76 2.10 -0.4925.40 1.00 1.01 1.01 1.00 0.99 0.99 2.52 1.18 -0.14
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STEERING CHARTS (6t pinion)
Related to Steering Wheel Angle
Steer
Angle
Wheel
Ang
Camber
Ang
Camber
Gain
Heave
Gain
Heave
CL Roll Gain
deg deg deg deg mm mm deg
180 12.43 -4.25 -1.24 -1.43 0.166 0.109
160 11.03 -4.10 -1.10 -1.29 0.131 0.096
140 9.64 -3.96 -0.96 -1.14 0.100 0.084
120 8.26 -3.82 -0.82 -0.99 0.073 0.072
100 6.87 -3.68 -0.68 -0.84 0.051 0.060
80 5.50 -3.54 -0.54 -0.68 0.033 0.048
60 4.12 -3.40 -0.40 -0.51 0.018 0.036
40 2.75 -3.27 -0.27 -0.35 0.008 0.024
20 1.37 -3.13 -0.13 -0.18 0.002 0.012
0 0.00 -3.00 0.00 0.00 0.000 0.000
-20 -1.37 -2.87 0.13 0.18 0.002 -0.012
-40 -2.75 -2.74 0.26 0.36 0.008 -0.024
-60 -4.12 -2.61 0.39 0.55 0.018 -0.036
-80 -5.50 -2.49 0.51 0.74 0.033 -0.048
-100 -6.89 -2.36 0.64 0.94 0.051 -0.060
-120 -8.27 -2.24 0.76 1.14 0.073 -0.072
-140 -9.66 -2.12 0.88 1.34 0.100 -0.084-160 -11.06 -2.00 1.00 1.55 0.131 -0.096
-180 -12.46 -1.88 1.12 1.76 0.166 -0.109
Related to Steering Rack DisplacementSteer
Rack
Wheel
Ang
Camber
Ang
Camber
Gain
Heave
Gain
Heave
CL Roll Gain
mm deg deg deg mm mm deg
20 13.52 -4.36 -1.36 -1.54 0.196 0.118
18 12.15 -4.22 -1.21 -1.40 0.159 0.106
16 10.78 -4.08 -1.07 -1.26 0.125 0.094
14 9.42 -3.94 -0.93 -1.12 0.096 0.082
12 8.07 -3.80 -0.80 -0.97 0.070 0.071
10 6.72 -3.66 -0.66 -0.82 0.049 0.0598 5.37 -3.53 -0.53 -0.66 0.031 0.047
6 4.03 -3.39 -0.39 -0.50 0.017 0.035
4 2.68 -3.26 -0.26 -0.34 0.008 0.024
2 1.34 -3.13 -0.13 -0.17 0.002 0.012
0 0.00 -3.00 0.00 0.00 0.000 0.000
-2 -1.34 -2.87 0.13 0.18 0.002 -0.012
-4 -2.69 -2.75 0.25 0.35 0.008 -0.024
-6 -4.03 -2.62 0.38 0.54 0.017 -0.035
-8 -5.38 -2.50 0.50 0.73 0.031 -0.047
-10 -6.73 -2.38 0.62 0.92 0.049 -0.059
-12 -8.08 -2.26 0.75 1.11 0.070 -0.071
-14 -9.44 -2.14 0.86 1.31 0.096 -0.082
-16 -10.81 -2.02 0.98 1.51 0.125 -0.094-18 -12.18 -1.90 1.10 1.72 0.159 -0.106
-20 -13.56 -1.79 1.21 1.93 0.196 -0.118
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(7t pinion)
Related to Steering Wheel Angle
Steer
Angle
Wheel
Ang
Camber
Ang
Camber
Gain
Heave
Gain
Heave
CL Roll Gain
deg deg deg deg mm mm deg
180 14.62 -4.47 -1.47 -1.64 0.229 0.127
160 12.97 -4.30 -1.30 -1.49 0.181 0.113
140 11.33 -4.13 -1.13 -1.32 0.138 0.099
120 9.69 -3.96 -0.96 -1.15 0.101 0.085
100 8.07 -3.80 -0.80 -0.97 0.070 0.071
80 6.45 -3.64 -0.63 -0.79 0.045 0.057
60 4.83 -3.47 -0.47 -0.60 0.025 0.042
40 3.22 -3.31 -0.31 -0.41 0.011 0.028
20 1.61 -3.16 -0.16 -0.21 0.003 0.014
0 0.00 -3.00 0.00 0.00 0.000 0.000
-20 -1.61 -2.85 0.15 0.21 0.003 -0.014
-40 -3.22 -2.70 0.30 0.43 0.011 -0.028
-60 -4.84 -2.55 0.45 0.65 0.025 -0.042
-80 -6.46 -2.40 0.60 0.88 0.045 -0.057
-100 -8.08 -2.26 0.75 1.11 0.070 -0.071
-120 -9.72 -2.11 0.89 1.35 0.101 -0.085
-140 -11.36 -1.97 1.03 1.60 0.138 -0.099-160 -13.01 -1.84 1.17 1.85 0.181 -0.113
-180 -14.67 -1.70 1.30 2.10 0.229 -0.127
FRONT GEOMETRY CHARTS
Wheel
Def.
Ride
Height
R.C.
Height
R.C. to
O-L
R.C.
Parity
Cam.
Angle
Cam.
Change
VSAL
Lateral
VSAL
Long
Bump
Steer Scrub Anti-Dive
mm mm mm mm % deg deg mm mm deg mm %-25 60.01 46.03 13.98 85.01 -2.75 0.26 6355 14199 0.00 -1.05 21.84
-20 55.01 41.78 13.23 84.87 -2.79 0.21 6034 13691 0.00 -0.79 22.49
-15 50.01 37.54 12.47 84.72 -2.84 0.16 5743 13220 0.00 -0.55 23.16-10 45.01 33.31 11.70 84.57 -2.89 0.11 5478 12783 0.00 -0.34 23.84
-5 40.01 29.08 10.93 84.41 -2.95 0.06 5238 12377 0.00 -0.16 24.55
0 35.01 24.87 10.15 84.25 -3.00 0.00 5018 11999 0.00 0.00 25.29
5 30.01 20.66 9.35 84.09 -3.06 -0.06 4816 11647 0.00 0.13 26.04
10 25.01 16.46 8.55 83.92 -3.12 -0.12 4631 11317 -0.01 0.24 26.83
15 20.01 12.27 7.75 83.75 -3.18 -0.18 4459 11008 -0.01 0.33 27.6420 15.01 8.08 6.93 83.58 -3.25 -0.25 4299 10717 -0.01 0.39 28.48
25 10.01 3.91 6.10 83.40 -3.31 -0.31 4151 10443 -0.02 0.42 29.3530 5.01 -0.26 5.27 83.22 -3.38 -0.38 4011 10184 -0.02 0.43 30.25
35 0.01 -4.41 4.43 83.03 -3.46 -0.45 3881 9939 -0.03 0.42 31.18
40 -4.99 -8.56 3.57 82.84 -3.53 -0.53 3758 9707 -0.03 0.38 32.1545 -9.99 -12.70 2.71 82.65 -3.61 -0.61 3642 9487 -0.04 0.32 33.16
50 -14.99 -16.82 1.84 82.45 -3.69 -0.68 3535 9278 -0.05 0.23 34.21
+ in, - out
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1.9. REAR SUSPENSION GEOMETRY RESULTS
Reference points: Z “0” Bottom of chassis (top of wooden skid)
There is only one rear suspension geometry, designed around the Michelin tyres.
REAR SPRING CHARTS
Wheel
Def.
Spring
Def.
Force
Ratio
Vel.
Ratio V.R.^2
n t
Wheel
Rate
Rising
Rate
nst
Rising
Rate
mm mm ratio ratio ratio ratio % %
-25.00 -23.49 0.93 1.07 1.15 0.87 -2.63 0.05
-20.00 -18.81 0.94 1.07 1.14 0.88 -2.25 0.08
-15.00 -14.13 0.94 1.07 1.14 0.88 -1.77 0.09
-10.00 -9.43 0.94 1.06 1.13 0.88 -1.21 0.11
-5.00 -4.72 0.94 1.06 1.12 0.89 -0.61 0.11
0.00 0.00 0.95 1.06 1.12 0.90 0.00 0.11
5.00 4.74 0.95 1.05 1.11 0.90 0.57 0.10
10.00 9.49 0.95 1.05 1.10 0.91 1.08 0.0815.00 14.25 0.95 1.05 1.10 0.91 1.47 0.06
20.00 19.02 0.95 1.05 1.10 0.91 1.73 0.03
25.00 23.80 0.95 1.05 1.10 0.91 1.80 -0.0130.00 28.57 0.95 1.05 1.10 0.91 1.65 -0.05
35.00 33.33 0.95 1.05 1.10 0.91 1.25 -0.10
40.00 38.09 0.95 1.05 1.11 0.90 0.55 -0.15
45.00 42.82 0.94 1.06 1.12 0.89 -0.46 -0.21
50.00 47.53 0.94 1.07 1.14 0.88 -1.83 -0.28
25.40 24.18 0.95 1.05 1.10 0.91 1.79 -0.01
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REAR ARBs CHARTS
Heave
ARB1
Def.
ARB2
Def.
ARB3
Def.
Force
Ratio 1
Force
Ratio 2
Force
Ratio 3
Vel.
Ratio1
Vel.
Ratio2
Vel.
Ratio3
mm mm mm mm ratio ratio ratio ratio ratio ratio-25.00 -23.24 -24.07 -24.90 0.87 0.91 0.96 1.15 1.09 1.04
-20.00 -18.83 -19.44 -20.05 0.90 0.94 0.98 1.12 1.07 1.02-15.00 -14.28 -14.70 -15.13 0.92 0.96 0.99 1.09 1.05 1.01-10.00 -9.62 -9.88 -10.14 0.94 0.97 1.00 1.06 1.03 1.00
-5.00 -4.85 -4.97 -5.09 0.96 0.99 1.01 1.04 1.01 0.99
0.00 0.00 0.00 0.00 0.98 1.00 1.02 1.02 1.00 0.985.00 4.94 5.03 5.13 1.00 1.01 1.03 1.00 0.99 0.97
10.00 9.95 10.13 10.31 1.01 1.02 1.04 0.99 0.98 0.9615.00 15.04 15.28 15.52 1.03 1.04 1.05 0.97 0.97 0.96
20.00 20.21 20.49 20.77 1.04 1.05 1.05 0.96 0.95 0.95
25.00 25.46 25.77 26.07 1.06 1.06 1.06 0.94 0.94 0.9430.00 30.81 31.12 31.42 1.08 1.08 1.08 0.93 0.93 0.93
35.00 36.27 36.55 36.83 1.10 1.10 1.09 0.91 0.91 0.9240.00 41.85 42.09 42.32 1.13 1.12 1.11 0.89 0.89 0.90
45.00 47.57 47.74 47.90 1.16 1.14 1.13 0.86 0.87 0.89
50.00 53.46 53.53 53.59 1.20 1.17 1.15 0.84 0.85 0.8725.40 25.89 26.19 26.49 1.06 1.06 1.07 0.94 0.94 0.94
Heave V.R1.^2 V.R2.^2 V.R3.^2
Wheel
Rate 1
Wheel
Rate 2
Wheel
Rate 3
Rising
Rate 1
Rising
Rate 2
Rising
Rate 3
mm ratio ratio ratio ratio ratio ratio % % %-25.00 1.33 1.20 1.08 0.75 0.84 0.92 -21.53 -16.54 -11.78
-20.00 1.24 1.14 1.05 0.80 0.88 0.96 -16.19 -12.31 -8.62
-15.00 1.18 1.09 1.02 0.85 0.92 0.98 -11.45 -8.63 -5.94-10.00 1.12 1.06 0.99 0.89 0.95 1.01 -7.24 -5.41 -3.67
-5.00 1.08 1.02 0.97 0.93 0.98 1.03 -3.46 -2.57 -1.71
0.00 1.04 1.00 0.96 0.96 1.00 1.05 0.00 0.00 0.005.00 1.01 0.97 0.94 0.99 1.03 1.06 3.26 2.40 1.57
10.00 0.98 0.95 0.93 1.02 1.05 1.08 6.46 4.74 3.0915.00 0.95 0.93 0.91 1.05 1.07 1.09 9.74 7.15 4.67
20.00 0.92 0.91 0.90 1.09 1.10 1.11 13.26 9.75 6.4025.00 0.89 0.89 0.88 1.12 1.13 1.13 17.17 12.67 8.3930.00 0.86 0.86 0.86 1.17 1.16 1.16 21.64 16.05 10.75
35.00 0.82 0.83 0.84 1.22 1.20 1.19 26.88 20.04 13.60
40.00 0.78 0.80 0.82 1.28 1.25 1.22 33.08 24.80 17.06
45.00 0.74 0.76 0.79 1.35 1.31 1.27 40.48 30.51 21.27
50.00 0.70 0.73 0.76 1.43 1.38 1.32 49.32 37.36 26.37
25.40 0.89 0.88 0.88 1.13 1.13 1.14 17.50 12.92 8.56
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REAR 3RD SPRING CHARTS
Heave
ARB1
Def.
ARB2
Def.
ARB3
Def.
Force
Ratio 1
Force
Ratio 2
Force
Ratio 3
Vel.
Ratio1
Vel.
Ratio2
Vel.
Ratio3
mm mm mm mm ratio ratio ratio ratio ratio ratio-25.00 -22.28 -23.08 -23.87 0.82 0.86 0.90 1.23 1.16 1.11
-20.00 -18.12 -18.71 -19.30 0.85 0.89 0.92 1.18 1.13 1.08-15.00 -13.80 -14.21 -14.62 0.88 0.91 0.95 1.14 1.09 1.06-10.00 -9.33 -9.58 -9.84 0.91 0.94 0.97 1.10 1.07 1.03
-5.00 -4.73 -4.84 -4.96 0.93 0.96 0.98 1.07 1.04 1.02
0.00 0.00 0.00 0.00 0.96 0.98 1.00 1.05 1.02 1.005.00 4.84 4.94 5.04 0.98 1.00 1.01 1.02 1.00 0.99
10.00 9.79 9.97 10.14 1.00 1.01 1.03 1.00 0.99 0.9715.00 14.84 15.08 15.32 1.02 1.03 1.04 0.98 0.97 0.96
20.00 20.00 20.28 20.55 1.04 1.05 1.05 0.96 0.95 0.95
25.00 25.26 25.55 25.85 1.06 1.06 1.07 0.94 0.94 0.9430.00 30.62 30.91 31.21 1.08 1.08 1.08 0.92 0.93 0.93
35.00 36.09 36.36 36.63 1.10 1.10 1.09 0.91 0.91 0.9240.00 41.67 41.89 42.12 1.13 1.12 1.10 0.89 0.90 0.91
45.00 47.37 47.52 47.68 1.15 1.14 1.12 0.87 0.88 0.89
50.00 53.20 53.25 53.31 1.18 1.16 1.13 0.85 0.86 0.8825.40 25.68 25.98 26.28 1.06 1.07 1.07 0.94 0.94 0.94
Heave V.R1.^2 V.R2.^2 V.R3.^2
Wheel
Rate 1
Wheel
Rate 2
Wheel
Rate 3
Rising
Rate 1
Rising
Rate 2
Rising
Rate 3
mm ratio ratio ratio ratio ratio ratio % % %-25.00 1.50 1.36 1.23 0.67 0.74 0.81 -27.26 -22.93 -18.85
-20.00 1.39 1.27 1.17 0.72 0.79 0.86 -21.19 -17.71 -14.42
-15.00 1.29 1.20 1.12 0.77 0.83 0.90 -15.46 -12.83 -10.35-10.00 1.21 1.14 1.07 0.82 0.88 0.93 -10.04 -8.28 -6.61
-5.00 1.15 1.09 1.03 0.87 0.92 0.97 -4.90 -4.01 -3.17
0.00 1.09 1.04 1.00 0.92 0.96 1.00 0.00 0.00 0.005.00 1.04 1.01 0.97 0.96 0.99 1.03 4.72 3.81 2.95
10.00 1.00 0.97 0.95 1.00 1.03 1.06 9.32 7.48 5.7415.00 0.96 0.94 0.92 1.04 1.06 1.08 13.87 11.06 8.40
20.00 0.92 0.91 0.90 1.08 1.10 1.11 18.46 14.62 11.0025.00 0.89 0.88 0.88 1.13 1.13 1.14 23.17 18.24 13.5930.00 0.85 0.86 0.86 1.17 1.17 1.16 28.09 21.98 16.24
35.00 0.82 0.83 0.84 1.22 1.21 1.19 33.32 25.93 19.01
40.00 0.79 0.80 0.82 1.27 1.25 1.22 38.98 30.17 21.97
45.00 0.75 0.78 0.80 1.33 1.29 1.25 45.18 34.80 25.19
50.00 0.72 0.75 0.78 1.39 1.34 1.29 52.06 39.91 28.75
25.40 0.88 0.88 0.88 1.13 1.13 1.14 23.55 18.53 13.80
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REAR GEOMETRY CHARTS
Wheel
Def.
Ride
Height
R.C.
Height
R.C. to
O-L
R.C.
Parity
Cam.
Angle
Cam.
Change
VSAL
Lateral
VSAL
Long
Bump
Steer Scrub Anti-Lift
Anti-
Squat
mm mm mm mm % deg deg mm mm deg mm % %-25 90.01 109.62 -19.61 121.55 -0.96 0.55 2692 12735 0.01 -2.94 25.84 41.52
-20 85.01 103.55 -18.54 121.33 -1.07 0.44 2677 12594 0.00 -2.28 25.80 40.79
-15 80.01 97.49 -17.48 121.11 -1.18 0.33 2662 12455 0.00 -1.65 25.75 40.05
-10 75.01 91.44 -16.43 120.90 -1.29 0.22 2647 12319 0.00 -1.07 25.71 39.29
-5 70.01 85.40 -15.39 120.69 -1.40 0.11 2631 12184 0.00 -0.51 25.66 38.50
0 65.01 79.37 -14.36 120.48 -1.51 0.00 2616 12052 0.00 0.00 25.62 37.69
5 60.01 73.35 -13.34 120.28 -1.62 -0.11 2600 11921 0.00 0.48 25.58 36.86
10 55.01 67.34 -12.33 120.08 -1.73 -0.22 2585 11791 0.00 0.92 25.54 36.01
15 50.01 61.34 -11.33 119.89 -1.85 -0.34 2569 11664 0.00 1.33 25.49 35.13
20 45.01 55.35 -10.34 119.69 -1.96 -0.45 2554 11538 0.00 1.70 25.45 34.22
25 40.01 49.38 -9.36 119.50 -2.08 -0.57 2538 11414 0.01 2.04 25.41 33.28
30 35.01 43.40 -8.39 119.31 -2.19 -0.68 2522 11292 0.01 2.34 25.37 32.31
35 30.01 37.44 -7.43 119.13 -2.31 -0.80 2507 11171 0.01 2.60 25.33 31.31
40 25.01 31.49 -6.48 118.94 -2.42 -0.91 2491 11052 0.02 2.83 25.29 30.27
45 20.01 25.55 -5.54 118.76 -2.54 -1.03 2475 10934 0.02 3.03 25.25 29.19
50 15.01 19.62 -4.60 118.58 -2.66 -1.15 2459 10818 0.02 3.18 25.22 28.07
+ in, - out
Note: Ride Height is to “0” line
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x6 x5 x4 x3 x2 x Const
Spring Deflection -7.09E-08 7.67E-06 -2.28E-04 1.00E+00 0.00E+00
Spring Force Ratio -2.83E-07 2.30E-05 -4.57E-04 1.00E+00
Spring (Force Ratio)^2 8.03E-14 -1.30E-11 7.88E-10 -5.88E-07 4.62E-05 -9.15E-04 1.00E+00
Spring Rising Rate 4.82E-13 -6.52E-11 3.15E-09 -1.77E-06 9.25E-05 -9.15E-04
ARB1 Deflection 3.32E-08 4.65E-06 -1.06E-04 9.93E-01 0.00E+00
ARB1 Force Ratio 1.33E-07 1.40E-05 -2.13E-04 9.93E-01
ARB1 (Force Ratio)^2 1.76E-14 3.71E-12 1.38E-10 2.58E-07 2.78E-05 -4.22E-04 9.86E-01
ARB2 Deflection 2.50E-08 5.43E-06 -2.54E-04 9.99E-01 0.00E+00ARB2 Force Ratio 1.00E-07 1.63E-05 -5.09E-04 9.99E-01
ARB2 (Force Ratio)^2 1.00E-14 3.26E-12 1.64E-10 1.83E-07 3.28E-05 -1.02E-03 9.98E-01
ARB3 Deflection 1.68E-08 6.21E-06 -4.02E-04 1.01E+00 0.00E+00ARB3 Force Ratio 6.72E-08 1.86E-05 -8.05E-04 1.01E+00
ARB3 (Force Ratio)^2 4.52E-15 2.51E-12 2.39E-10 1.05E-07 3.81E-05 -1.62E-03 1.01E+00
3rd Spr1 Deflection 1.13E-08 -1.44E-06 2.83E-04 9.85E-01 0.00E+00
3rd Spr1 Force Ratio 4.51E-08 -4.31E-06 5.67E-04 9.85E-01
3rd Spr1 (Force Ratio)^2 2.04E-15 -3.90E-13 6.98E-11 8.41E-08 -8.18E-06 1.12E-03 9.71E-01
3rd Spr2 Deflection 6.08E-09 -9.06E-07 1.41E-04 9.91E-01 0.00E+00
3rd Spr2 Force Ratio 2.43E-08 -2.72E-06 2.82E-04 9.91E-01
3rd Spr2 (Force Ratio)^2 5.92E-16 -1.32E-13 2.11E-11 4.67E-08 -5.31E-06 5.60E-04 9.83E-01
3rd Spr3 Deflection 9.31E-10 -3.80E-07 -7.83E-07 9.98E-01 0.00E+00
3rd Spr3 Force Ratio 3.72E-09 -1.14E-06 -1.57E-06 9.98E-01
3rd Spr3 (Force Ratio)^2 1.39E-17 -8.48E-15 1.28E-12 7.43E-09 -2.27E-06 -3.12E-06 9.95E-01
RC Heave 8.65E-11 2.56E-07 1.61E-04 -8.43E-01 2.49E+01
RC to OL 8.65E-11 2.56E-07 1.61E-04 1.57E-01 -1.01E+01Camb Angle -5.72E-11 4.78E-10 -4.62E-05 -1.14E-02 -3.00E+00
Camber Change -5.72E-11 4.75E-10 -4.62E-05 -1.14E-02 0.00E+00
VSAL Lat 1.82E-05 -3.24E-03 3.65E-01 -4.21E+01 5.02E+03
VSAL Long 1.69E-05 -3.52E-03 5.04E-01 -7.29E+01 1.20E+04
Bump Steer -4.48E-11 3.49E-08 -1.26E-05 -3.80E-04 0.00E+00
Scrub -8.15E-11 7.33E-08 -5.00E-04 2.94E-02 0.00E+00
Antidive 6.58E-09 1.62E-06 4.88E-04 1.49E-01 2.53E+01
x6 x5 x4 x3 x2 x Const
Spring Deflection -5.75E-08 -1.08E-06 2.82E-04 9.46E-01 0.00E+00
Spring Force Ratio -2.30E-07 -3.24E-06 5.63E-04 9.46E-01
Spring (Force Ratio)^2 5.29E-14 1.49E-12 -2.49E-10 -4.39E-07 -5.82E-06 1.07E-03 8.96E-01
Rising Rate 3.18E-13 7.46E-12 -9.95E-10 -1.32E-06 -1.16E-05 1.07E-03
ARB1 Deflection 2.32E-07 -8.28E-06 1.63E-03 9.79E-01 0.00E+00
ARB1 Force Ratio 9.28E-07 -2.49E-05 3.27E-03 9.79E-01
ARB1 (Force Ratio)^2 8.61E-13 -4.61E-11 6.69E-09 1.65E-06 -3.80E-05 6.40E-03 9.59E-01
ARB2 Deflection 1.98E-07 -6.66E-06 1.23E-03 1.00E+00 0.00E+00
ARB2 Force Ratio 7.91E-07 -2.00E-05 2.47E-03 1.00E+00
ARB2 (Force Ratio)^2 6.25E-13 -3.16E-11 4.30E-09 1.48E-06 -3.39E-05 4.94E-03 1.00E+00
ARB3 Deflection 1.68E-07 -5.36E-06 8.32E-04 1.02E+00 0.00E+00
ARB3 Force Ratio 6.72E-07 -1.61E-05 1.66E-03 1.02E+00
ARB3 (Force Ratio)^2 4.51E-13 -2.16E-11 2.49E-09 1.32E-06 -3.01E-05 3.40E-03 1.05E+00
3rd Spr1 Deflection 1.30E-07 -9.52E-06 2.30E-03 9.57E-01 0.00E+00
3rd Spr1 Force Ratio 5.19E-07 -2.85E-05 4.59E-03 9.57E-01
3rd Spr1 (Force Ratio)^2 2.69E-13 -2.96E-11 5.58E-09 7.30E-07 -3.35E-05 8.79E-03 9.15E-01
3rd Spr2 Deflection 1.12E-07 -9.05E-06 1.91E-03 9.78E-01 0.00E+00
3rd Spr2 Force Ratio 4.46E-07 -2.72E-05 3.82E-03 9.78E-01
3rd Spr2 (Force Ratio)^2 1.99E-13 -2.42E-11 4.15E-09 6.65E-07 -3.85E-05 7.47E-03 9.57E-01
3rd Spr3 Deflection 9.71E-08 -8.90E-06 1.53E-03 1.00E+00 0.00E+00
3rd Spr3 Force Ratio 3.89E-07 -2.67E-05 3.06E-03 1.00E+00
3rd Spr3 (Force Ratio)^2 1.51E-13 -2.07E-11 3.09E-09 6.14E-07 -4.40E-05 6.11E-03 1.00E+00
RC heave 5.20E-10 -2.13E-07 2.04E-04 -1.20E+00 7.94E+01
RC to OL 5.20E-10 -2.13E-07 2.04E-04 -2.05E-01 1.44E+01
Camb Angle -1.80E-11 -1.81E-08 -1.42E-05 -2.23E-02 -1.51E+00
Camber Change -1.79E-11 -1.81E-08 -1.42E-05 -2.23E-02 0.00E+00
VSAL Lat -1.85E-09 2.59E-06 -1.40E-03 -3.08E+00 2.62E+03
VSAL Long 9.45E-08 -6.52E-05 3.68E-02 -2.64E+01 1.21E+04
Bump Steer 1.55E-11 -8.64E-09 9.28E-06 3.77E-05 0.00E+00
Scrub -3.62E-10 1.59E-07 -7.21E-04 9.94E-02 0.00E+00
Front polynomials with heave
Rear polynomials with heave
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1.10. BRAKES ASSEMBLY
CALIPERS TECHNICAL DETAILS
Introduction
The aim of this document is to inform the A1GP Teams about the caliper features and its components givingalso information about when and how service it.
Caliper technical details
P6 28/30/36 Aluminium Mono-block.
Front left p/n XA8.35.01
Front right p/n XA8.35.02
Rear left p/n XA8.35.11
Rear right p/n XA8.35.12
Maximum stack: 78mm
Caliper service
The recommended working temperature for the A1GP caliper is < 210°C.
Over 210°C the seals fitted into the caliper can be overheated and they will not guarantee the right
performances of the caliper (sealing, roll back, fluid absorption,…).
In order to keep under control the caliper temperature Brembo suggests to use its thermo-tape:
scale 132°C/210°C p/n 025168.10
scale 210°C/260°C p/n 025168.13
If the caliper temperature goes over 210°C the seals have to be opportunely refreshed.
After 2000km the caliper has to be serviced changing the following components:
1. pistons
2. seals
3. pad abutments
4. bleed screws
Ti insert
The caliper has fitted Ti inserts in order to reduce the heat exchange between the pads and the caliper
body/brake fluid. The thickness of the Ti inserts is 4mm. The Ti inserts are just clipped on the pistons.
Even when the Ti inserts are fitted on the pistons the maximum carbon stack is 78mm.
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Pad
abutment
(side)
Ti insert
Bleed screw
Pad
abutment
(Bottom)
Screw M5
for the padabutment
(bottom)
Screw M4
for the pad
abutment
(side)
Pad
abutment
(under
central
bridge)
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Component
Quantity
per
caliper
p/n Mounting instruction
Inlet nipple 1 06.3710.20 Mounting torque 25Nm (fit it with copper seal) @ cold
Copper seal 1 06.2196.13
Bleeding screw 2 05.2812.13 Mounting Torque 15Nm @ cold
Piston Seal Ø 28 2 05.5955.52
Before the assembly plunge it in the assembly fluid for at least 24
hours and no longer the 48 hours
Piston Seal Ø 30 2 05.5955.53Before the assembly plunge it in the assembly fluid for at least 24
hours and no longer the 48 hours
Piston Seal Ø 36 2 05.5955.56Before the assembly plunge it in the assembly fluid for at least 24
hours and no longer the 48 hours
Assembly fluid 250ml - 04.8164.90 Use only for new piston seals
Brake fluid 500cl
(20 bottles)
- 04.8164.11
Piston Ø 28 2 20.8650.12
Piston Ø 30 2 20.8650.13
Piston Ø 36 2 20.8650.16
Ti insert Ø 28 2 20.8204.23
Ti insert Ø 30 2 20.8204.24
Ti insert Ø 36 2 20.8204.27
Elastic ring for the insert Ø 28 2 05.2091.30
Elastic ring for the insert Ø 30 2 05.2091.31
Elastic ring for the insert Ø 36 2 05.2091.34
Conical spring for the piston Ø 28 2 05.4360.42
Conical spring for the piston Ø 30 2 05.4360.43
Conical spring for the piston Ø 36 2 X93.41.09
Pad abutment
(Under central bridge)
1 20.7268.47
Pad abutment (Side) 4 20.7268.30
Fit it using the correspondent screw (p/n XA0.03.50). The back of
the pad abutment has to touch in all its points the caliper body. The
distance between the two pad abutment of each pad has to be
161mm MIN!
Compass lower Ø23,5 1 XA1.G7.60
Compass higher 1 X98.82.80
Pad abutment (Bottom) 4 20.7269.22 Fit it using the correspondent screw (p/n 05.4424.61).
Screw M4x6 for the pad
abutment (side)4 XA5.K0.50 Mounting torque 4Nm @ cold
Screw M5x12 for the pad
abutment (bottom)8 XA0.03.51 Mounting torque 8Nm @ cold
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CARBON-CARBON BRAKES
Introduction
The aim of this document is to help the A1GP Teams on managing the carbon friction material. Because of
wear rate and performance are strictly related with the pads and the disc working temperature in the next
rows the brake system cooling will be focused.
Carbon technical details
Disc
Carbon material: MBC 100
Brembo p/n: XA7.88.B2
Dimensions: 278mm x 28mm x 44 mm
Ventilation holes. 30x10 mm oblong holes
Minimum thickness: 17mm
Pad
Carbon material: CCR 400
Brembo p/n: 07.9206.41
Dimensions: 25mm x 44mm
Back plate: 12mm
Minimum thickness: 12mm
Carbon material working temperature
In order to have the best performances from the carbon material MBC 100 the disc working temperature at
the beginning of the braking phase (it is what Brembo calls “Initial Temperature”, measurable in the end ofthe straight before touching the brakes) have to be in the range of 350°C-550°C.
Use the Brembo paint (p/n 02.5711.10) on the discs in order to check the disc temperature. In a normal use it
should be:
the green paint completely turn to white (T> 430°C);
the red paint turn to white just close to the friction surface (T>610°C);
do not remove paint as it erode the surface when removed;
On a green track, during the first practice, Brembo suggests to start always with partially blanked ducts
(from 20% to 50% it depends on the circuit duty). After the first run adjust the duct blanking in order to
guarantee the correct working temperature of carbon material and caliper.
Bedding
With new discs and pads it is necessary generate a high temperature in order to guarantee the quick
bedding of the disc and pad contact surfaces. On the out lap the driver has not to be too gentle on the
brakes in order to avoid any glazing problem.
Brake ducts: about 50% blanked.
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Glazing
The “glazing” is a physical phenomenon that happens when the carbon material is used in low
temperature/energy conditions. If the disc and the pads are glazed the friction coefficient drop
dramatically creating problem on the brake balance and on the braking performance.
It is quite easy recognize a disc or a pad glazed: the surface looks shiny and touching it with a finger it
remains normally quite clean (or cleaner than with the carbon not glazed!).
On the A1GP car the rear axle is more sensible to the glazing because of the balance distribution and the
brake system cooling, this is the reason why Brembo suggests to the teams to consider always a partial rear
duct blanking on the light duty tracks.
The glazing is a degenerative phenomenon, if it starts it is possible trying to recover blanking the ducts and
asking the driver to push hard on the brakes. In this case the best thing to do is glass paper the disc and/or
the pads in order to remove the glazed layer.
In case of rain / cold conditions / extremely light track
Carbon can be used in raining condition without any problem, but a blank of the air ducts of about 50% is
recommended in order to have the initial disc temperature higher then 300-350°C.
The same procedure has to be followed if the track is extremely light on brakes or if it is in low grip condition.
New pads on a used disc
It could happen it is necessary fit new pads on a used disc or vice versa, in these cases for the first laps the
pedal could feel a bit longer because of the pad and the discs surfaces have to be bedded.
In this case Brembo suggest to follow the same procedure recommended for the “bedding”.
Remember that disc and pads must be changed when the minimum thicknesses are:
DISCS PADS
New Minimum thickness New Minimum thickness
28mm 17mm 25mm 12mm
The Minimum thickness is based on piston travel and covers the situation where 2 pads are at 12mm and
disc at 17mm, then the caliper pistons are still within the caliper seals. If the pads are thicker, the disc could
be thinner.
Disc resurfacing
The discs can be resurfaced in order to have flat rubbing surfaces and the disc holes centred in the disc
thickness (the disc wear could not be even between the two half of the disc).
The disc resurface is not easy and if it is not done properly the disc could generate judder. If you are going
to resurface the discs Brembo recommends to contact Brembo and send the discs to the Brembo factory in
order to be machined.
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Storing
Carbon discs and pads must be stored in appropriate boxes in order to avoid any possible damage during
transportation.
Contamination
Carbon discs and pads do not have to go in touch with lubricants, brake fluids, hydrocarbons, solvents or
acids.
Notes
The thickness of the discs and pads to start a Race is a different situation; the wear prediction has to be
calculated from the practice sessions.
Brake balance: 56% starting setting
DISC BELL CAP HEAD BOLTS TIGHTENING TORQUE
Disc Bell Cap Head Bolts Tightening Torque is:
Disc Bell Cap Heads Toque: 5 Nm
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1.11. WHEEL NUTS
Wheel Nut Tightening Torque and Wheel Gun pressures are:
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1.12. PEDALS
The Pedals Assembly is as follows:
To have the correct direction for the Brake Bias balance adjuster, the Front and Rear master cylinder have
to be placed in the correct position.
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Adjustments can be made for different height drivers. Different parts are required depending in the position.
An Extra tall driver kit can be ordered:
Brake pedal and pad
Throttle pedal and pad
Steering column mount
Extraction seat
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1.13. STEERING
1.13.1. STEERING WHEEL POSITION
Steering Wheel position can be adjusted by changing a part of the Steering Column:
1.13.2. STEERING RACK PINION GEARS
Steering Rack is available with two ratio options:
- 37mm per revolution (6 teeth)
- 43.3mm per revolution (7 teeth)
The layout is the following:
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1.13.3. STEERING WHEEL
The Steering Wheel layout is as follows:
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1.13.4. SWITCH PANNEL
Switch panel layout is the following:
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1.14. OIL SYSTEM
The Oil System has the following parts:
The layout of the system as follows:
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In the Oil Tank there is a foam baffle in the top and a pick up filter in the bottom. These have to be checked
on a regular basses:
The measurements for the oil tank capacity are the follows:
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1.15. HYDRAULIC SYSTEM
Hydraulic system layout as shown:
Capacity:
As described in Section 1.5, level and characteristics for the Oil Tank are:
Description CapacityMinimum
LevelReference Notes
Hydraulic Fluid 50mm Above the baffle plate
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The Different connections in the Hydraulic System are:
The Valve Block Mounting Bracket is assembled with components laid out as shown:
From the Valve Block to the Oil Tank
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The Rest of the connections of the Valve Block are the following:
CLUTCH
VALVE
UP
VALVE
DW VALVE PRESSURE
SENSOR
EMERGENCY
VALVE
TO PUMP
BLUE
HOSE
TO
ACCUM
GREEN
HOSE
TO HYDR
TANK
RETURN
RED HOSE SAFETY
VALVE 80
Bar
DON’T
TOUCH
CLUTCH
PINK
HOSE
EMERGENCY
ACCUM
BROWN HOSE
DW YELLOW HOSE
UP
VIOLET
HOSE
DW YELLOW
HOSE
PRESSURE
SENSOR
YELLOW HOSE
BETWEEN HYDR
TANK AND PUMP
THE WIRES
WITHOUT
FASTON
BECAUSEARE INSIDE
OF THE
CONNECTOR
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1.17. COOLING SYSTEM
The Cooling System is divided in to Engine Cooling and Gearbox Cooling. The layout is as follows:
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Connections in the Left Hand Radiator are as follows:
And in the Right Hand radiator:
Engine Cooling is done by the Water System
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1.17.1. WATER SYSTEM
The Water system layout is as follows:
Header Tank Level
The Header Tank Level has to have a water volume of 475cc at 80ºC Temperature. Different
References can be taken:
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Top Engine Mounts and tie Bar
A section of the Top Engine Mounts:
A tie bar is used to increase the lateral beam stiffness of the engine. Shims are supplied to adjust
the assembly length of the tie bars:
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Engine side view:
Note: It may necessary to shim the
rod end joint to remove vertical play.
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1.20. SAFETY WHEEL TETHERS
FRONT TETHERS – WHEEL SIDE FRONT TETHERS – CHASSIS SIDE
REAR TETHERS – WHEEL SIDE REAR TETHERS – GEARBOX SIDE
Wheel side installation:
• Front: eyelet trapped around tether bobbins on upright.
• Rear: eyelet trapped around tether dog bones mounted on upright.
Chassis side installation:
• Front: front tether eyelet trapped around lower wishbone front & rear leg central bracket;
• Rear: front and rear eyelet trapped around dog bones mounted to gearbox case.
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1.21. EXTINGUISHER SYSTEM LAYOUT
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2. SET-UP
2.1. MICHELIN TYRE INFORMATION
Tyre dimensions depend on tyre pressure, rim width and camber angle.
The stiffness values are based on the recommended inflating pressure (hot tyres).
Front Tyres
Description Left Hand Side Right Hand Side
Design Cambers -3.0° -3.0°
Design Tyre DiameterTyre Size
640mm
26/64R13
640mm
26/64R13
Tyre Static Loaded Radius(155Kg per axle)
307mm @ 22 lbs/in²
1.5bar
307mm @ 22 lbs/in²
1.5bar
Note:- Front total axle load 682lbs 310Kg @ 43.8% weight distribution with driver and 45litres fuel.
Rear Tyres
Description Left Hand Side Right Hand Side
Design Cambers -1.5° -1.5°
Design Tyre DiameterTyre Size
660mm
35/66R13
660mm
35/66R13
Tyre Static Loaded Radius
(436lbs 198Kg per axle)
317mm @ 22 lbs/in²
1.5bar
317mm @ 22 lbs/in²
1.5bar
Note:- Rear total axle load 871lbs 395Kg @ 56.2% weight distribution with driver and 45litres fuel.
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2.2. SUGGESTED SETUP
The set-up considers the complete car, with all fluids [water, oil], driver and 45 kilograms of fuel, ready to
race.Generic Starting
EVENT Test CIRCUIT Silverstone DATE
DRIVER LAP DIST Km CHASSIS A1GP-F01
DIFF POWERFLOW ENG. NO FUEL 30 Kg Litres 40.5
PLATES 6 plates Active per side MILEAGE 0 Km RACK 6 TOOTH
RAMPS 65°power 45°off power DISCS 28mm carbon
PRE-LOAD 35Nm PADS carbon
SKID FRT 10mm jabroc BRAKE BAL 54 % BALLAST Kg
M/C FRONT 17.4mm Ø M/C REAR 19mm Ø RAD EXIT Chimney V1 Louvers 0
RATIOS 1st 13 : 36 2nd 14 : 30 3rd 15 : 27 4th 18 : 28 5th 18 : 25 6th 18 : 23 DROP 27 : 16 BEVEL 15 : 23
M.P.H. 82.3 106.4 126.6 146.6 164.1 178.4 FINAL 16 : 51 RPM 8700
K.P.H. 132 170 203 234 263 285
FRONT WING
TYPE Std
° ANGLE °
0 mm GURNEY 0 mm
Main Pain Ex mm
Height to "0" Line Front mm End Plate Height to "0" Line Rear mm
TILT
0.00
Std GEOMETRY Std
- 3.0 ° CAMBER - 3.0 °
LEFT FRONT 0.00 ° CASTER 0.00 ° RIGHT FRONT
TOE 2.0 mm OUT 1.02 INS 26.0 MM RIDE HT 1.02 INS 26.0 MM TOE 2.0 mm OUT
Ride HT at Skid 1.06 INS 26.8 MM
TRACK ROD 603 mm 1500 lbs/in SPRINGS 1500 lbs/in TRACK ROD 603 mm
Bar COLD PSI 16.7 1500 lbs/in W. RATE 1500 lbs/in Bar COLD PSI 17.1
Bar HOT PSI 23.2 1.00 RR 0.0% M. RATIO 1.00 RR 0.0% Bar HOT PSI 23.2
DUCTS D2 27.99% % FRONT 27.99% DUCTS D2
PUSH ROD 654.9 mm Penske VDP-45 DAMPERS Penske VDP-45 PUSH ROD 654.9 mm
CAN PSI 7 bar B = 5 R = 5 SETTINGS B = 5 R = 5 CAN PSI 7 bar
TYRE comp 505 253 mm DAMPER C/C 253 mm TYRE comp 505
WB Length FWD mm 1 flat 0.6 mm ride height Pushrod 1 turn 4.1 mm ride height WB Length FWD mm
WB Length RWD mm DONUTS 2 3rd SPRING GAP 8mm WB Length RWD mm
ROLL BAR DIA. 13.5 mm
3 2 1 Pos'n T,bar Pos'n 1 2 3 FRONT WR % 55.99%
Soft Mid Hard RAKE Hard Mid Soft TOTAL WR 53580.203 ° REAR WR % 44.01%
R-01 GEOMETRY R-01
- 2.2 ° Shim 4.38 CAMBER - 2.2 ° Shim 4.38
LEFT REAR 1.52 INS 38.5 MM RIDE HT 1.52 INS 38.5 MM RIGHT REAR
Drop HT MM Ride HT at Skid 1.49 INS 37.8 MM
TOE 2.0 mm IN 1300 lbs/in SPRINGS 1300 lbs/in TOE 2.0 mm IN
TOE LINK 582 mm 1179 lbs/in W. RATE 1179 lbs/in TOE LINK 582 mm
Bar COLD PSI 15.1 1.05 M. RATIO 1.05 Bar COLD PSI 15.1
Bar HOT PSI 21.8 22.01% % REAR 22.01% Bar HOT PSI 21.8
TYRE DIA 647.95 mm Penske VDP-45 DAMPERS Penske VDP-45 TYRE DIA 25.51 inch
DUCTS D1 B = 5 R = 5 SETTINGS B = 5 R = 5 DUCTS D1
PUSH ROD 505.0 mm mm DAMPER C/C mm PUSH ROD 505.0 mm
CAN PSI 7 bar 1 flat 1.0 mm ride height Pushrod 1 turn 6.4 mm ride height CAN PSI 7 bar
TYRE comp 505 DONUTS 2 3rd SPRING GAP TYRE comp 505
ROLL BAR DIA. 6.5 mm
3 2 1 Pos'n T,bar Pos'n 1 2 3
Soft Mid Hard Hard Mid Soft
REAR WING
TYPE 2 element
ANGLE Main Plain 9 ° 58.3 °
HOLE 5
GURNEY 10 mm
8
Length 52.5
15.5
1.18
1.60
1.04
1.50
794.5
785.5
1.15
1.60
1.04
1.50
794.5
785.5
447.5
21.021.0
Flap
313.5313.5
10.0
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2.3. SETUP ADJUSTMENT
The different adjustments that can be made in the car are the following:
- Ride Height
- Camber
- Toe
- Damper’s setting
- 3rd Spring
- ARB
The changes are set as following:
Positive Change in: Means:
Ride height Car moves up
Camber Upper part of rim moves outwards
Toe Toe Out
2.3.1. RIDE HEIGHT
The starting point set-up gives ride heights at the front and rear axle centrelines at the plane of thebottom of the plank (Z = -10.0mm), as per the wind tunnel data. The ride height is defined as the
distance between that plane and the road surface.
For the adjustment of the Ride Height the pushrod adjusters are used. Both Front and Rear have the same
pitch 5/8 – 24 UNEF, what it means a change of 2.117mm per turn.
FRONT
Adjustment Pushrod Change Ride Height Change Camber Effect Toe Effect
Ride Height +1 turn +4.2mm +0.05degs 0mm
Ride Height +1 flat +0.7mm +0.008degs 0mm
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REAR
Adjustment Pushrod Change Ride Height Change Camber Effect Toe Effect
Ride Height +1 turn +6.35mm +0.14degs 0mm
Ride Height +1 flat +1.06mm +0.023degs 0mm
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REAR CAMBER ADJUSTMENT
Adjustments in Track Rod and Pushrod to maintain same Ride Height and Toe with a Camber Change:
• 1 shim less (-1 shim) -0.875 mm
Camber change +0.224 degs
Track Rod Adjustment
Track Rod change -0.540 mm
Track Rod change -0.255 turnsTrack Rod change 0 turn 1.53 flats Shorter
Pushrod Adjustment
Pushrod change 0.175 mm
Pushrod change 0.083 turns
Pushrod change 0 turn 0.50 flats Longer
• 2 shim less (-2 shim) -1.750 mm
Camber change +0.448 degs
Track Rod Adjustment
Track Rod change -1.079 mm
Track Rod change -0.510 turns
Track Rod change 0 turn 3.06 flats Shorter
Pushrod Adjustment
Pushrod change 0.349 mm
Pushrod change 0.165 turns
Pushrod change 0 turn 0.99 flats Longer
• 3 shim less (-3 shim) -2.625 mm
Camber change +0.672 degs
Track Rod Adjustment
Track Rod change -1.619 mm
Track Rod change -0.765 turns
Track Rod change 0 turn 4.59 flats Shorter
Pushrod Adjustment
Pushrod change 0.524 mm
Pushrod change 0.248 turns
Pushrod change 0 turn 1.49 flats Longer
Shim Thickness @ design ride height 55mm
Camber Angle Total Shim
Degrees 0.875 1.75 3.5 Pack mm
1/2 3 10.50
3/4 1 1 2 9.63
1 1 2 8.75
1 1/4 1 2 7.88
1 1/2 2 7.00
1 3/4 1 1 1 6.13
2 1 1 5.25
2 1/4 1 1 4.38
2 1/2 1 3.50
2 3/4 1 1 2.63
3 Max 1 Max 1.75
3 1/4 1 0.88
3 1/2 No Shims 0.00
Shim Thickness
N o o f S h i m s R e q u i r e d
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2.3.3. TOE
Adjustment in Front and Rear Toes are made with the Toe Link adjusters. The change in toe are as follows:
FRONT
For 1 mm of toe change 2.8 Flats change
REAR
For 1 mm of toe change 1.6 Flats change
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2.3.4. SPRINGS & DAMPERS
FRONT
Front Springs
Front Spring Range is from 1000 lb/in to 1800 lb/in in 100 lb/in steps. Each Spring Rate has its own
Displacement Spacer designed to keep the same static damper length and Static Ride Height. Blue
Spacers are for the Front.
FRONT DAMPER SPRING SPACER
Finish: BLUE ANODISE
Part Number Spring (Lb/in) Spacer Thickness (mm)
F01-F35-003 1000 7.35
F01-F35-004 1100 6.68
F01-F35-005 1200 6.12F01-F35-006 1300 5.65
F01-F35-007 1400 5.25
F01-F35-008 1500 4.90
F01-F35-009 1600 4.59
F01-F35-010 1700 4.32
F01-F35-011 1800 4.08
REAR
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Rear Springs
Rear Spring Range is from 800 lb/in to 1500 lb/in in 100 lb/in steps. The same concept as the front
displacement spacers are designed for the Rear, the spacers are in red for the rear.
REAR DAMPER SPRING SPACER
Finish: RED ANODISE
Part Number Spring (Lb/in) Spacer Thickness (mm)
F01-F37-001 800 15.06
F01-F37-002 900 13.70F01-F37-003 1000 12.61
F01-F37-004 1100 11.72
F01-F37-005 1200 10.97
F01-F37-006 1300 10.34
F01-F37-007 1400 9.81
F01-F37-008 1500 9.34
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DAMPERS ADJUSTMENT
Dual Bleed Shaft
The Dual-Bleed Adjuster consists of two knobs in series that are internally sprung against each other to
provide positive detent feel when making adjustments. They are adjusted radially in a clockwise direction
to add damping in compression and rebound.
STIFFER COMPRESSION (+)STIFFER REBOUND (+)
(-) SOFTER COMPRESSION(-) SOFTER REBOUND
STIFFER COMPRESSION (+)STIFFER REBOUND (+)
(-) SOFTER COMPRESSION(-) SOFTER REBOUND
Dual Bleed Compression Adjustment
The Compression Bleed Adjuster affects the low-speed region of the compression curve (from 0-2in/sec)
and will be more effective the higher the overall low-speed forces (i.e. the more low-speed compression
built into the damper). Range: (30) clicks
COMPRESSIONADJUSTER
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Dual Bleed Rebound Adjuster
The Rebound Bleed Adjuster affects the low-speed region of the rebound curve (from 0-2in/sec) and will be
more effective the higher the overall low-speed forces (i.e. the more low-speed rebound built into the
damper). Range: (30) clicks
REBOUNDADJUSTER
Dual Bleed Needle Assembly
JT-DBCOMP.
This is a break down of the needle assembly. This part is purchased fully assembled.
If the shock is not adjusting properly there may be a problem with this assembly. It is usually related to the
poppets inside the needle. If re-assembling the needle, be sure to use brown loctite to seal cap.
NEEDL CAP
SPRING
SP-17POPPET
HOUSING
0R-2007-B
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Front Damper Characteristics
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2.3.6. ANTIROLL BAR STIFFNESS
There are three different diameters of Anti Roll Bars and a Roll Free system:
• Roll Free System
• Ø6.5mm
• Ø9.0mm
• Ø13.5mm
The links to the T bar can be fitted in three different positions depending on the required stiffness.
At Full soft (Position 3) the links fitted in the most outboard position.
At Full Stiff (Position 1) the links fitted in the most inboard position.
Dimensions
Dimensions of the different components are:
• Top element (T bar):
• Ø6.5mm bar.
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• Ø9.0mm
• Ø13.5mm
Front
Velocity ratio: 0.99
Bar system wheel rate, pure roll Kg/mm
Bar diameter Wheel rate P1 Wheel rate P2 Wheel rate P3
6.5mm 4 2.6 1.8
9.0mm 15 9.6 6.7
13.5mm 73 47 33
Rear
Velocity ratio: 0.97
Bar diameter Wheel rate P1 Wheel rate P2 Wheel rate P36.5mm 4.4 2.9 2
9.0mm 16 10.5 7.4
13.5mm 79 51.3 36.3
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2.4. RIDE HEIGHT CHECK AND REFERENCES
Ride heights are critical for setting and changing the aerodynamic performance of the car.
It could be difficult to measure the ride heights directly, so we provide alternative references.
The example shown is the car in the design configuration with front ride height 25mm and rear ride height
55mm (at the wheel axis under the skid). Pitch angle in the design configuration is 0.554°. (3100 wheelbase)
Measuring front ride height:
[ 1 ] There are two flat areas provided on the top of the Monocoque aligned with the front wheel centre
line, at 576mm from the bottom of the car, (under side of skid (plank), 10mm below the “0” line).
Their distance from the ground is 601 – 576 = 25mm.
[ 2 ] A flat surface is about 216.4 mm behind the front wheel centre line (front of the skid). You can calculate
the ride height at the wheel as follows:
measured 27.1 – 216.4 * tan (pitch angle) = 25mm
Measuring rear ride height:
[ 1 ] There is a machined area provided on the gearbox, aligned with the rear wheel centre line, at 409mm
from car bottom, (under side of skid, (plank) 10mm below the “0” line).
Its distance from the ground is 464 – 509 = 55mm.
[ 2 ] Under the flat bottom, about 200mm ahead of the rear wheel axis, there is a flat surface (Rear of the
Skid Plate). You can measure the ground clearance and calculate the ride height at the rear centre line as
follows:
measured 53.1mm + 200 * tan ( pitch angle ) = 55 mm
For a more general procedure:
• Define your desired ride heights, front and rear ( F & R ) [mm]
• Calculate the pitch angle 57.29 * ( R – F ) / 3100.
• Calculate which value you should measure from the reference you choose.
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2.4.2. REAR QUICK LIFT JACK AND STARTER ARCHITECTURE REFERENCES.
References for the Starter motor spigot position are:
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3. AERODYNAMICS
The Aerodynamic features of the car are as follows:
3.1. FRONT WING ASSEMBLY
The different Parts of the Front Wing Assembly are:
3.1.1. FRONT WING MAIN PLANE
The Front Wing Mainplane height on its bottom surface lowest point is:
To set these values, different Shims with thickness of 0.5, 1 and 2 mm are provided (nominal
distance is 2mm) for assembling it to the pylons:
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The angle of the Mainplane is fixed to 1.5 degs referenced to the 0 line.
3.1.2. FRONT WING FLAP
Flap angles can be adjusted with the Flap adjuster. One complete turn of the adjuster is one
degree in Flap angle.
The angle range of the Flap is from 15 degs to 27 degs.
A gurney can be fitted on the gurney to obtain an extra front downforce and balance, the
gurney is attached by means of double sided tape:
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3.2. MAIN BODY & UNDERWING
The different parts of the Main Body are as follows:
Reference dimensions of the Underwing are the following:
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3.3. BARGE BOARDS
The Barge Boards are fitted to the Monocoque and front side pods with their respective mounts.
Reference dimensions for the assembled barge boards are as follows:
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3.4. SIDEPODS
Lateral view of the Sidepods with the elements assembled is:
3.5. REAR WING ASSEMBLY
The different Parts of the Rear Wing Assembly are as shown:
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3.5.3. REAR WING MAIN-PLANE ADJUSTMENT RANGE
The Adjustment of the main-plane assembly is made using the five holes located in the End Plates:
- The adjustment goes from the lower incidence in P1 (top hole) to High incidence in P5 (lower hole).
- Low Downforce configuration is based in the range from P1 to P3 without gurney.
- High Downforce configuration is based in the range from P3 to P5 with the 10mm gurney.
- An Extra Downforce position can be achieved with the 20mm gurney in P5.
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3.6. AERODYNAMIC DATA
This data is to be used in conjunction with the VDP (Vehicle Dynamics Program) to aid set-up of
the A1GP-F01 car.
The information given in this report has been taken from data recorded from accurate modelling
of a 40% scale model in a closed section constant Reynolds number wind tunnel at Southampton
University. Track testing of the A1GP-F01 car has given a close track to wind tunnel correlation of
aerodynamic forces and radiator cooling information.
Notations
• All forces are quoted in Kilograms (Kg) @ 240kph assuming ISA conditions. • All dimensions are full scale in mm.
• Ride heights are quoted in mm from the ground to 10mm below and perpendicular to the
reference plane (“0” line) the under side of the plank at the front and rear axle centrelines.
• Radiator data is given as a delta percentage of velocity from the base line configuration.
• All front wing angles are quoted in degrees.
• All rear wing angles are quoted in hole positions.
Aero values are given @ the following ambient conditions;
Temperature = 15°C
Pressure = 1013 mbHumidity = 0% (dry air)
Aerodynamic forces are function of air temperature, pressure and humidity because they affect
the air density.
Typically,
Higher Air Temperature by 10° F ( 5.5 °C) reduces downforce and drag by 3.0 %
Higher Air Pressure by 1” Hg increases downforce and drag by 3.0%
Higher Air Relative Humidity by 50% increases downforce and drag by 0.5%
Drag: Total drag of the car including the contribution of front and rear wheel withTyre profiles.
Downforce: Total downforce generated by the car, excluding wheels.
Front Downforce: Downforce acting on the front tyre contact point.
Rear Downforce: Downforce acting on the rear tyre contact point.
Front Balance %: Downforce percentage spilt on front tyre contact point (=100*Lf /Lt)
Efficiency: Total Downforce divided by the total Drag L/D
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3.7. POLAR DIAGRAM OF THE CAR
For a Ride Height Reference in the Front of 15mm and in the Rear 28mm:
Polar Diagram
1080
1100
1120
1140
1160
1180
1200
1220
380 390 400 410 420 430 440
Drag (kg)
D o w n f o r c e ( k g )
1
98
76
4
5
32
Points FW FlapRW Fish
PlateRW
PositionRW
GurneyBalance Drag Downforce
angle angle mm % kg kg
Low Downforce 1 15.5 15 1 0 38.1 385 1102
2 16.5 17 2 0 38 393 1124
3 17.5 19 3 0 38 400 1140
4 18 15 1 10 37.9 400 1142
5 19.5 17 2 10 38.3 408 1161
6 20 19 3 10 38.1 415 11787 20.5 21 4 10 37.9 421 1189
High Downforce 8 21 23 5 10 38 429 1202
with 20mm Gurney 9 22.5 23 5 20 38.2 434 1213
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3.8. AERO MAPS
3.8.1. LOW DOWNFORCE AERO MAP
The Low Downforce Aero Map was obtained with the following settings:
Rear Wing
Position
Rear Wing
Gurney
Front Wing Flap
Angle
Front Wing Flap
GurneyCooling Brake Ducts
P1 No 15.5 No Only chimney D2 (Large)
TOTAL DOWNFORCE Max 1196 Min 1006 M-m 190 Avg 1099
0 5 10 15 20 25 30 35 40 45 50-1 1 08 3 1 11 8 1 14 6 1 17 1 1 19 1 1 21 0 1 22 3 1 23 5 1 24 5 1 25 1 1 25 6
2 1 05 0 1 08 8 1 11 8 1 14 3 1 16 5 1 18 4 1 19 7 1 21 0 1 21 9 1 22 6 1 23 6
5 1025 1060 1094 1117 1142 1159 1175 1 18 7 1 19 6 1 20 7 1 21 8
8 1008 1039 1069 1098 1120 1139 1153 1164 1177 1189 1200
11 9 95 1 02 5 1 05 3 1 08 0 1100 1119 1135 1147 1159 1170 1181
14 9 87 1 01 4 1 04 0 1 06 3 1 08 4 1101 1116 1129 1141 1152 1161
17 9 78 1 00 3 1 02 8 1 04 9 1 06 8 1 08 6 1100 1112 1122 1134 1143
20 968 993 1 01 6 1 03 7 10 55 1 071 1085 1097 1108 1116 1125
23 960 984 1 00 6 1 02 6 10 43 1 058 1071 1 08 2 1093 1102 1110
26 953 976 99 7 1 01 5 10 29 1 043 1056 1 06 9 1 08 0 10 87 1 095
29 949 971 98 8 1 00 2 10 16 1 030 1043 1 05 6 1 06 8 10 77 1 083
FRONT BALANCE Max 42 Min 33 M-m 9 Avg 38
0 5 10 15 20 25 30 35 40 45 50-1 39.87 40.52 40.98 41.48 42.06 42.67 43.36 44.02 44.61 45.07 45.41
2 38.54 39.39 40.02 40.52 41.10 41.67 42.32 42.97 43.49 43.91 44.32
5 37.33 38.18 38.97 39.58 40.06 40.66 41.37 41.92 42.41 42.90 43.35
8 36.32 37.11 37.84 38.54 39.13 39.70 40.35 40.92 41.46 41.98 42.41
11 35.36 36.16 36.89 37.57 38.21 38.82 39.40 40.01 40.59 41.06 41.53
14 34.50 35.25 35.98 36.66 37.32 37.97 38.59 39.15 39.72 40.23 40.70
17 33.63 34.37 35.09 35.79 36.50 37.17 37.83 38.43 38.96 39.51 39.91
20 32.76 33.50 34.23 34.99 35.74 36.47 37.15 37.78 38.33 38.81 39.24
23 31.88 32.63 33.44 34.29 35.10 35.82 36.44 37.03 37.83 38.32 38.69
26 30.98 31.86 32.80 33.68 34.43 35.14 35.76 36.51 37.16 37.74 38.25
29 30.23 31.29 32.26 33.08 33.80 34.46 35.13 35.90 36.58 37.24 37.78
TOTAL DRAG Max 391 Min 376 M-m 15 Avg 384
0 5 10 15 20 25 30 35 40 45 50-1 370 373 377 380 383 385 387 389 391 394 396
2 371 373 376 380 382 385 387 389 391 394 396
5 371 374 376 379 382 384 386 389 391 393 395
8 371 374 37 7 37 9 382 384 386 389 391 393 395
11 371 374 376 379 382 384 386 388 391 3 93 395
14 371 374 376 379 382 384 386 388 390 393 395
17 371 374 377 379 382 384 386 388 390 3 92 395
20 372 374 377 380 382 384 386 388 390 392 395
23 372 375 378 380 381 383 385 387 389 3 91 39426 373 376 378 379 381 383 385 387 389 391 393
29 375 376 377 379 381 383 385 386 388 390 392
EFFICIENCY M ax 3 .057 Mi n 2 .663 M-m 0.394 Avg 2.865
0 5 10 15 20 25 30 35 40 45 50-1 2.928 2.996 3.039 3.081 3.113 3.144 3.161 3.175 3.182 3.178 3.170
2 2.834 2.916 2.972 3.012 3.050 3.078 3.096 3.112 3.116 3.116 3.122
5 2.759 2.838 2.910 2.948 2.990 3.017 3.040 3.052 3.057 3.068 3.081
8 2.713 2.779 2.839 2.898 2.934 2.966 2.985 2.996 3.011 3.025 3.036
11 2.678 2.743 2.796 2.850 2.884 2.914 2.939 2.953 2.968 2.977 2.989
14 2.659 2.712 2.762 2.805 2.840 2.868 2.891 2.908 2.922 2.932 2.940
17 2.634 2.682 2.728 2.765 2.800 2.828 2.850 2.866 2.875 2.889 2.894
20 2.607 2.652 2.693 2.731 2.765 2.792 2.813 2.831 2.842 2.847 2.852
23 2.578 2.622 2.663 2.702 2.734 2.760 2.780 2.794 2.810 2.816 2.817
26 2.551 2.597 2.640 2.675 2.700 2.724 2.743 2.765 2.780 2.784 2.787
29 2.533 2.581 2.618 2.644 2.667 2.691 2.713 2.735 2.753 2.762 2.762
REAR DOWNFORCE Max 689 Min 664 M-m 25 Avg 680
0 5 10 15 20 25 30 35 40 45 50-1 651 665 676 685 690 694 693 691 689 687 685
2 645 659 671 680 686 691 691 690 689 688 688
5 642 655 667 675 685 688 689 689 689 689 690
8 642 654 664 675 682 687 688 688 689 690 691
11 643 655 664 674 680 684 688 688 689 689 691
14 646 657 666 674 679 683 685 687 688 688 689
17 649 658 667 673 679 682 684 685 685 686 687
20 651 660 668 674 678 680 682 683 683 683 684
23 654 663 669 674 677 679 681 682 679 680 680
26 658 665 670 673 675 677 678 679 679 677 676
29 662 667 669 670 672 675 677 677 678 676 674
REAR RIDE HEIGHT
F R O N T R I D E H E I G H T
REAR RIDE HEIGHT
F R O N T R I D E H E I G H T
REAR RIDE HEIGHT
F R O N T R I D E H E I G H T
REAR RIDE HEIGHT
F R
O N T R I D E H E I G H T
REAR RIDE HEIGHT
F R O N T R I D E H E I G H T
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
900
950
1000
1050
1100
1150
1200
1250
REARFRONT
1200-1250
1150-1200
1100-1150
1050-1100
1000-1050
950-1000
900-950
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
34
36
38
40
42
44
REARFRONT
42.00-44.0040.00-42.00
38.00-40.00
36.00-38.00
34.00-36.00
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
376378380382384386388390392394396398400402404406
404-406
402-404
400-402
398-400
396-398
394-396
392-394
390-392
388-390
386-388
384-386
382-384
380-382
378-380
376-378
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
2.5
2.6
2.7
2.8
2.9
3.0
2.910-3.010
2.810-2.910
2.710-2.810
2.610-2.710
2.510-2.610
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
600
620
640
660
680
700
680-700
660-680
640-660
620-640
600-620
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
9009209409609801000102010401060108011001120114011601180120012201240126012801300
REARFRONT
1280-13001260-1280
1240-1260
1220-1240
1200-1220
1180-1200
1160-1180
1140-1160
1120-1140
1100-1120
1080-1100
1060-1080
1040-1060
1020-1040
1000-1020
980-1000
960-980
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
30.030.531.031.532.032.533.033.534.034.535.035.536.036.537.037.538.038.539.039.540.040.541.041.542.042.543.043.544.044.545.045.546.0
REARFRONT
45.50-46.00
45.00-45.50
44.50-45.00
44.00-44.50
43.50-44.00
43.00-43.50
42.50-43.00
42.00-42.50
41.50-42.00
41.00-41.50
40.50-41.00
40.00-40.50
39.50-40.00
39.00-39.50
38.50-39.00
38.00-38.50
37.50-38.00
0
1 0
2 0
3 0
4 0
5
0 - 1
5
1 1
1 7
2 3
2 9
368370372374376378380382384386388390392394396398
REARFRONT
396-398
394-396
392-394
390-392
388-390
386-388
384-386
382-384
380-382
378-380
376-378
374-376
372-374
370-372
368-370
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
2.5302.5502.5702.5902.6102.6302.6502.6702.6902.7102.7302.7502.7702.7902.8102.8302.8502.8702.8902.9102.9302.9502.9702.9903.0103.0303.0503.0703.0903.1103.1303.1503.1703.190
REARFRONT
3.170-3.190
3.150-3.170
3.130-3.150
3.110-3.130
3.090-3.110
3.070-3.090
3.050-3.070
3.030-3.050
3.010-3.030
2.990-3.010
2.970-2.990
2.950-2.970
2.930-2.950
2.910-2.930
2.890-2.910
2.870-2.890
2.850-2.870
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
640645650655660665670675680685690695700
REARFRONT
695-700
690-695
685-690
680-685
675-680
670-675
665-670
660-665
655-660
650-655
645-650
640-645
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3.8.2. HIGH DOWNFORCE AERO MAP
The High Downforce Aero Map was obtained with the following settings:
Rear Wing
Position
Rear Wing
Gurney
Front Wing Flap
Angle
Front Wing Flap
GurneyCooling Brake Ducts
P5 10mm 21 No Only chimney D2 (Large)
TOTAL DOWNFORCE Max 1291 Min 1119 M-m 172 Avg 1201
- 1 183 1 21 3 12 39 1 266 1 29 0 1 31 5 1 33 4 1 34 8 1 35 6 13 54 1 346
2 1 158 1 19 0 12 17 1 241 1 26 5 1 28 8 1 30 3 1 31 7 1 32 1 13 19 1 318
1137 1168 1197 1219 1244 1261 1279 1288 1291 1295 1300
1123 1150 1176 1202 1223 1239 1254 1261 1271 1278 1283
1111 1138 1161 1186 1205 1220 1234 1244 1254 1260 1268
1103 1127 1150 1171 1188 1204 1216 1228 1237 1246 1254
17 1 095 1 11 7 11 39 1 157 1 17 4 1 18 8 1199 1210 1220 1229 1240
1 086 1 10 8 11 28 1 146 1 16 1 1 17 2 1 18 3 1192 1202 1212 1223
1 079 1 10 1 11 19 1 134 1 14 6 1 15 7 1 16 7 1 17 7 1182 1192 1204
1 075 1 09 4 11 10 1 121 1 13 0 1 14 0 1 15 0 1 15 8 1 16 6 11 73 1 183
29 1 073 1 08 8 10 97 1 105 1 11 4 1 12 4 1 13 4 1 14 1 1 15 0 11 56 1 163
FRONT BALANCE Max 42 Min 34 M-m 8 Avg 38
- 39.80 40.21 40.58 41.06 41.77 42.59 43.53 44.25 44.71 44.75 44.52
2 38.84 39.41 39.89 40.31 40.91 41.64 42.33 43.01 43.27 43.30 43.38
37.88 38.47 39.04 39.59 39.97 40.61 41.41 41.78 42.00 42.30 42.61
36.99 37.58 38.13 38.69 39.18 39.68 40.30 40.68 41.15 41.54 41.87
36.11 36.71 37.28 37.80 38.37 38.89 39.41 39.92 40.40 40.76 41.19
35.26 35.84 36.43 36.98 37.54 38.09 38.63 39.17 39.64 40.16 40.59
17 34.41 35.01 35.59 36.18 36.75 37.31 37.85 38.40 38.94 39.45 39.95
33.58 34.19 34.80 35.40 35.98 36.55 37.11 37.64 38.19 38.73 39.28
32.77 33.40 34.04 34.65 35.24 35.80 36.33 36.87 37.47 38.02 38.57
32.00 32.67 33.32 33.92 34.48 35.04 35.58 36.14 36.69 37.28 37.85
31.30 32.00 32.62 33.19 33.74 34.27 34.81 35.38 35.94 36.51 37.10
TOTAL DRAG Max 437 Min 418 M-m 19 Avg 428
-1 415 418 421 424 428 431 435 438 441 442 443
2 415 418 421 424 427 431 434 437 439 440 442
5 415 417 420 423 426 430 433 435 437 439 442
414 417 420 423 426 429 432 434 437 439 441
414 417 420 423 426 428 431 434 436 438 441
413 416 419 422 425 428 431 433 436 438 440
17 413 416 419 422 425 428 430 433 435 438 440
412 415 419 422 424 427 430 432 435 437 439
412 415 418 421 424 427 429 432 434 436 439
412 415 418 421 424 426 429 431 434 436 438
413 416 418 421 423 426 428 431 433 436 438
EF FICIENCY Ma x 2.959 Min 2.6 74 M -m 0.285 Avg 2.807
-1 2.850 2.904 2.945 2.985 3.016 3.048 3.066 3.076 3.077 3.063 3.038
2 2.791 2.848 2.893 2.930 2.962 2.992 3.004 3.016 3.012 2.998 2.984
5 2.743 2.797 2.847 2.878 2.917 2.935 2.955 2.959 2.953 2.949 2.945
2.711 2.757 2.800 2.842 2.870 2.890 2.903 2.906 2.911 2.911 2.909
2.686 2.731 2.768 2.807 2.831 2.849 2.862 2.869 2.874 2.874 2.877
2.671 2.709 2.744 2.774 2.795 2.813 2.824 2.833 2.839 2.845 2.847
17 2.653 2.687 2.719 2.743 2.764 2.779 2.789 2.796 2.804 2.809 2.818
2.634 2.667 2.695 2.717 2.735 2.745 2.753 2.759 2.766 2.774 2.783
2.618 2.649 2.674 2.692 2.703 2.711 2.719 2.726 2.722 2.731 2.744
2.607 2.634 2.652 2.662 2.668 2.675 2.683 2.685 2.689 2.691 2.698
2.601 2.618 2.624 2.627 2.632 2.640 2.647 2.648 2.652 2.653 2.656
REAR DOWNFORCE Max 750 Min 728 M-m 22 Avg 742
-1 712 725 736 746 751 755 753 752 750 748 747
2 708 721 731 741 747 752 751 750 749 748 746
5 707 719 730 736 747 749 750 750 749 747 746
707 718 728 737 744 748 748 748 748 747 746
710 720 728 738 742 746 748 748 747 746 746
14 714 723 731 738 742 745 746 747 747 746 745
17 718 726 734 739 743 745 745 745 745 744 745
20 721 729 736 740 743 744 744 743 743 743 743
725 733 738 741 742 743 743 743 739 739 740
731 737 740 741 741 741 741 740 738 736 735
737 740 739 738 738 739 739 738 737 734 731
REAR RIDE HEIGHT
F R O N T R I D E H E I G H T
REAR RIDE HEIGHT
F R O N T R I D E H E I G H T
F R O N T R I D E H E I G H T
F R O N T R I D E H E I G H T
F R O N T R I D E H E I G H T
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
900
950
1000
1050
1100
1150
1200
1250
REARFRONT
1200-1250
1150-1200
1100-1150
1050-1100
1000-1050
950-1000
900-950
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
34
36
38
40
42
44
REARFRONT
42.00-44.00
40.00-42.00
38.00-40.00
36.00-38.00
34.00-36.00
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
376378380382384386388390392394396398400402404406
404-406
402-404
400-402
398-400
396-398
394-396
392-394
390-392
388-390
386-388
384-386
382-384
380-382
378-380
376-378
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
2.5
2.6
2.7
2.8
2.9
3.0
2.910-3.010
2.810-2.910
2.710-2.810
2.610-2.710
2.510-2.610
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
600
620
640
660
680
700
680-700
660-680
640-660
620-640
600-620
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
105010701090111011301150117011901210123012501270129013101330135013701390
REARFRONT
1370-1390
1350-1370
1330-1350
1310-1330
1290-1310
1270-1290
1250-1270
1230-1250
1210-1230
1190-1210
1170-1190
1150-1170
1130-1150
1110-1130
1090-1110
1070-1090
1050-1070
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
31.031.532.032.533.033.534.034.535.035.536.036.537.037.538.038.539.039.540.040.541.041.542.042.543.043.544.044.545.0
REARFRONT
44.50-45.00
44.00-44.50
43.50-44.00
43.00-43.50
42.50-43.00
42.00-42.50
41.50-42.00
41.00-41.50
40.50-41.00
40.00-40.50
39.50-40.00
39.00-39.50
38.50-39.00
38.00-38.50
37.50-38.00
37.00-37.50
36.50-37.00
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
412414416418420422424426428430432434436438440442444
REARFRONT
442-444
440-442
438-440
436-438
434-436
432-434
430-432
428-430
426-428
424-426
422-424
420-422
418-420
416-418414-416
412-414
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
2.6002.6202.6402.6602.6802.7002.7202.7402.7602.7802.8002.8202.8402.8602.8802.9002.9202.9402.9602.9803.0003.0203.0403.0603.080
REARFRONT
3.060-3.080
3.040-3.060
3.020-3.040
3.000-3.020
2.980-3.000
2.960-2.980
2.940-2.960
2.920-2.940
2.900-2.920
2.880-2.900
2.860-2.880
2.840-2.860
2.820-2.840
2.800-2.820
2.780-2.800
2.760-2.780
2.740-2.760
0
1 0
2 0
3 0
4 0
5 0
- 1
5
1 1
1 7
2 3
2 9
700705710715720725730735740745750755760
REARFRONT
755-760
750-755
745-750
740-745
735-740
730-735
725-730
720-725
715-720
710-715
705-710
700-705
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3.9. COOLING INLET BLANKING
Polar Diagram of Cooling
RH REFERENCE 15/28 FW set at 21 degs. No Gurney. Large Brake ducts (D2).
RW in P5 with 10mm FS Gurney
Tot Drag Front lift Rear Lift Balance
kg kg kg %
Std (only chimney) Ref 429 454 748 37.8Louvers Opened 428 454 739 38.1
∆Vrad/V0 Tot Drag Front lift Rear Lift Balance
% kg kg kg %
Std (only chimney) Ref Ref 429 454 748 37.8
Louvers Opened +13.7 -1 0 -9 0.3
3.10. BRAKE DUCTS SELECTION
Polar Diagram of Brake Ducts
RH REFERENCE 15/28 FW set at 21 degs. No Gurney. Cooling only chimney.
RW in P5 with 10mm FS Gurney
Tot Drag Front lift Rear Lift Balance
kg kg kg %
Std (D2) Large Ref 429 453 746 37.8
Small ducts (D1) 428 454 750 37.7
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3.11. POLAR DIAGRAM OF THE MAIN ADJUSTABLE DEVICES
3.11.1. FRONT FLAP
RW Position P5. Gurney 10mm FS.
Large Brake ducts (D2). Cooling only chimney.
FW Flap Tot Drag Front lift Rear Lift Balance
angle kg kg kg %
Ref 15 427 412 765 3518 428 430 756 36.3
21 429 452 750 37.6
24 430 474 744 38.9
27 431 490 731 40.1
Gurney 27 431 499 726 40.8
FW Flap Tot Drag Front lift Rear Lift Balance
angle kg kg kg %
Ref 15 427 412 765 35
18 1 18 -9 1.3
21 2 40 -15 2.6
24 3 62 -21 3.927 4 78 -34 5.1
Gurney 27 4 87 -39 5.8
34
35
36
37
38
39
40
41
14 17 20 23 26 29
Flap Angle
GurneyP
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3.11.2. REAR BI-PLANE
FW set at 21 degs. No Gurney.
Large Brake ducts (D2). Cooling only chimney.
HIGH DF RW RW Tot Drag Front lift Rear Lift Balance
angle position kg kg kg %
20mm Gurney Max HD 23 5 432 452 754 37.6
10mm Gurney Ref 23 5 429 453 750 37.7
10mm Gurney 21 4 422 454 740 3810mm Gurney 19 3 415 455 728 38.5
10mm Gurney 17 2 409 454 714 38.9
10mm Gurney 15 1 402 456 702 39.4
HIGH DF RW RW Tot Drag Front lift Rear Lift Balance
angle position kg kg kg %
20mm Gurney Max HD 23 5 3 -1 4 -0.1
10mm Gurney Ref 23 5 429 453 750 37.7
10mm Gurney 21 4 -7 1 -10 0.3
10mm Gurney 19 3 -14 2 -22 0.8
10mm Gurney 17 2 -20 1 -36 1.2
10mm Gurney 15 1 -27 3 -48 1.7
LOW DF RW RW Tot Drag Front lift Rear Lift Balance
angle position kg kg kg %
No Gurney Ref 23 5 415 457 726 38.6
No Gurney 21 4 408 457 714 39
No Gurney 19 3 401 457 701 39.5
No Gurney 17 2 395 459 688 40
No Gurney 15 1 386 459 672 40.5
LOW DF RW RW Tot Drag Front lift Rear Lift Balance
angle position kg kg kg %
No Gurney Ref 23 5 415 457 726 38.6
No Gurney 21 4 -7 0 -12 0.4
No Gurney 19 3 -14 0 -25 0.9
No Gurney 17 2 -20 2 -38 1.4
No Gurney 15 1 -29 2 -54 1.9
1100
1120
1140
1160
1180
1200
1220
380 390 400 410 420 430 440
Drag
HD
LD20mm Gurney
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4. CHASSIS ADJUSTMENTS
4.1. STEERING ASSEMBLY:
The steering wheel, using the column assembly can be adjusted to three different positions depending on
the spacer used.
4.2. NOSE BOX MOUNT
Dimensions for nose box quick release
4.3. EXTRACTABLE SEAT
In order to keep a high level of safety for the driver, the following
4.3.1. CARBON SHELL AND LEG STRAP POSITION
In case of a serious crash, the driver should be extracted in the extractable seat with no harm and no
difficulties. In order to achieve that, the following instructions have to be followed:
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- The seat must to be correctly fitted in the carbon shell.
- The holes for the leg straps in the carbon shell and those in the seat must to be aligned.
- The leg straps have to exit in front of the driver’s crotch.
- Check that when the driver is in the car, he is not sitting on the leg straps.
OK INCORRECT
The hole made in the driver seat to pass the lower seat belts must be large enough.
4.3.2. CARBON SHELL
In order to keep the extractable seat characteristics, NO MODIFICATION IS ALLOWED ON THE CARBON SHELL.
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4.3.3. QUICK RELEASE BLACK SOCKET POSITION
The black sockets must be maintained in position on the edge of the carbon shell in order to allow quick
fitting of the extraction tools.
4.3.4. SIDE BELTS
It is recommended that the side belts of the carbon shell are attached together to avoid them being
trapped between the shell and the chassis.
4.3.5. DRIVER SEAT DIMENSION
Driver seat must not exceed the carbon shell length and width.