Ofna Ultra LX Pro

1:8 SCALE GAS POWERED OFF-ROAD BUGGY

PLEASE READ INSTRUCTIONS CAREFULLY BEFORE ASSEMBLING THIS MODEL.

KEEP THIS MANUAL FOR PARTS NUMBERS WHEN ORDERING.

REQUIRED FOR OPERATION

THINGS NEEDED

AA Batteries ( 12 pcs )

Glow Fuel20%

TOOLS NOT INCLUDED IN KIT,BUT NEEDED TO MAINTAIN YOUR CAR.

Phillips Type Screw Drivers ( L )

Phillips Type Screw Drivers ( S )

Needle Nose Pliers

Cutter

Curved Scissors

Knife

Instant Cement

Cross Wrench#17109 $3.95

Glow Plug & 17MM Cross Wrench#10801 $6.95

Grease

You need to get batteries for the radio transmitter and the car receiver packs.• Radio TX needs (8) eight AA batteries.• Car needs (4) four AA Ni-cad batteries, Alkaline type batteries will work, but braking will be reduced. The best is to use a 5 cell hump pack for increased voltage..

Recommended Option:You may want to upgrade the car battery pack to a Ni-Cad or NiHm 5 cell type(600AE). This will give more run time. OFNA #10212

You will need to buy a few items to start the engine and run the car.• Use 20% nitro CAR fuel. Do not use airplane or heli fuels, they will over heat engine.

• Buy LONG glow plugs, like OFNA/PICCO Plug (#51007). Use plugs without idle bar. Do NOT use plugs, like the MC-59 or OS-8

In your box you will find..• #10163 - Bottle, spout top• #10218 - Red “C” size glow heater

#10212 NiHm Hump Pack,see charger 10214.

10214Over-niteCharger

MUST READ THIS BEFORE RUNNING

Running a nitro kit is fun and easy, but to make this a safe rusting.• Clean oil and dirt from chassis with a degreaser.and good experience you must observe a few rules. This

kit is extremely fast, easily over 40MPH, and can seriously Precautions

injure someone if you are not careful. • This kit is not a toy. Always run car with a second

person as a spotter and pitman.Where to run car?• Any running area you choose must be dry. Do not run

• Hot Parts - The pipe, manifold, engine and head are very car near any water or wet dirt.

hot and will cause burns.• Do not run on public streets. It is very easy to have the

car run over or damaged by hitting the curb. • Rotating Parts - Keep hands away from the drive train, • Do not operate car in tight confined places. The car is

wheels, and engine when engine is running.very fast and will easily hit something.• Do not run near people or animals. • Radio - Check batteries life before running the car. If

radio does not have full control of the car with steering • Due noise, you will want to consider the surrounding

and/or throttle/brake do not run until corrected. Failure to area when operating the car.

correct this will result in possible injury and damage to the • Do not operate the car at night. You will not be able to

car or property.drive it without hitting something.• Do not operate the car indoors. Engine exhaust is not

• Glow fuel - Do leave the glow fuel unattended with the lid healthy.

off. Fuel contains Methanol and Nitro Methane and is

flammable and poisonous.Glow Fuel• Glow fuel is poisonous!

Store fuel in cool ventilated location. Refer the glow fuel • Glow fuel is flammable!• Do not leave in fuel bottle with lid off at any time. label for additional precautions.• Do not use any fuel other than glow fuel in this engine.

• Car Fuel tank - Never store fuel in car tank, it will ruin the First Time Starting the Engine engine if left in tank.Caution! When starting engine make sure the following is

observed. • Always turn off the car BEFORE turning off radio.• Set engine Master needle to 3 turns (rich setting)• Do not do this alone, get an experienced friend to help at • DAMAGE DUE CAR RUN AWAY IS NOT A WARRANTY

first. ISSUE.• Fill fuel tank, try not to spill fuel. Do not spill fuel on

receiver IF YOU DO NOT BREAK-IN ENGINE • Hold car off the ground, so it will not runaway when first

CORRECTLY, MAINLY AT LOW RPM, starts• Turn on Radio and check the linkage before starting YOU WILL BREAK THE CONNECTING engine.

ROD!• Turn on car receiver battery switch.• Always have an air filter on the carburetor to keep dirt

out. FAILURE TO NOT READ AND Engine Break-in

FOLLOW BREAK-IN ENGINE • See Engine Page.

Emergency Stopping Engine When Running INSTRUCTIONS WILL VOID • Remove air filter and cover carb. intake.• Squeeze fuel line and hold until engine stops. WARRANTY!• With a rag, cover exhaust outlet.

Storing Car After RunningCHECK RADIO SETTING AND • Remove fuel from tank and fuel lines

• Turn off radio in carLINKAGE BEFORE STARTING• Put a few drops of after run in engine to keep it from

The car is very fast

and will too easily hit someone.

AB

C

CHECKING ENGINE THROTTLE

* Insert into transmitter.

1. Insert AA batteries into transmitter (8 Pcs).2.Turn on transmitter.3.Turn on receiver.4.Center throttle trims as shown .

A B C

1. Pull Full Throttle. 1. Push trigger to full brake position.2. Adjust alum. Stopper to increase or decrease the brake.

Idle Position (A)

Brake (C)

Full Throttle (B)

* Align throttle servo same as shown.

ASSEMBLY OF THE THROTTLE LINKAGE SYSTEM

3X3mmSet Screw

3X3mmSet Screw

3X3mmSet Screw

Plastic Collar

* Take the plastic collar from brake system plastic parts.

Throttle Spring

#10300Alum.Stopper

#10300Alum.Stopper

* Snap On.

#30530Plastic ThrottleBall Joint

2mm Rod

Fuel Tube ( 6mm )

Idle Position

Brake

Full Throttle


A

B

C

• Full brake arm position. Spring compresses forward and brake rods pull brake levers.

• Full throttle arm position. Spring rod pulls throttle barrel open and brake rods release pressure on brake cams.

IMPORTANTCHECK RADIO THROTTLE AND STEERING SWITCHES BEFORE RUNNING CAR

#30800Plastic Throttlekit

Note: Battery life is short when using Alkaline batteries. For safety, we recommend using Alkaline batteries for only 30 minutes before testing; mostly changing. Battery strength affects braking power and radio range. If voltage drops while running the car, you will loose control and destroy your car! This is NOT covered under warranty.

To increase run time, upgrade receiver battery to a 5-cell hump pack. Also, install a battery fail safe (OFNA # 91002) to further protect your car. But, the most important step you can make, “is to always use fully charged or fresh batteries when running your car”.

Insert 8 pcs AA batteries into transmitter.

INSTALLATION OF THE TIRES AND WHEELS

Front Knuckle ArmAssembly

Rear Hub Assembly

Notice direction of the tire.

Notice direction of the tire.

Wheel Nut

Wheel Nut

Note:Make sure wheel nuts are tight before running your car.

Use a 17MM socket wrench to tighten these nuts. Spare nuts in blue color are OFNA #15072.

Note: Battery life is short when using Alkaline batteries. For safety, we recommend checking Alkaline batteries after 30 minutes. Battery strength affects radio range. If voltage drops while running the car, you will loose control and destroy your car! This is NOT covered under warranty.

To increase run time, upgrade receiver batteries to AA Ni-Cad or NiMH type. But, the most important step you can make, “is to always use fully charged or fresh batteries when running your car”.

Radio shown may vary depending on availability. Therefore radio pictured on

15072Nut, Blue

2. Pull down piston, attach pressure top and shock oil overflow with tissue paper.

SHOCK ASSEMBLY

FILLING THE SHOCKS WITH OIL

ASSEMBLY OF THE SPRING

1. Pull down piston and pour oil into shock cylinder. Remove air bubbles by slowly moving piston up and down.

3. Tighten up shock cap.

*Move Slowly.

*Leave 3mm.

OIL

40059Oil Seal

40090 7mm R-Ring

* Push 6mm ball joint into ball end.

2.6 x 5mmWasher

40069 Shock Spring, Black

40063Spring Holder

304116mm Ball

32033Pressure Top

Cap

* Fit into the groove.

40054 Short Shaft, Front

40055 Long Shaft, Rear

* Long shaft for rear.

down.

UP

* Be careful not to damage shock shaftor over tighten threads.

* Short shaft for front.

4. Assembly the dust cover.

40060 2.5mm Nylon Nut

32235 Shock Piston

40076 Front Shock Body

40077 Rear Shock Body

40090 1mm Washer

40090 2mm Washer

Make PAIR for Front

Make PAIR for Rear

Fit the O-ring into groove.

49041Spring Adjuster

49041 Spring Adjuster

49041 Spring Adjuster....4

40059 14.7mm O-Ring 40090

3.5mm O-Ring

40058 Shock Shaft Dust Cover

32235Shock Piston.........4

4005914.7mm O-Ring....4

400901mm Washer.............4

400902mm Washer..........4

400602.5mm Nylon Nut........4

40056Shock Plastic Rod End

40056Shock Plastic Rod End

40093Shock caps, Hard coated

40052 - Front Shock Set40053 - Rear Shock Set40069 - Spring Set, black (stock)40070 - Spring Set, Green (soft)40071 - Spring Set, Blue (med)40072 - Spring Set, White (hard)

301213 x 5mm Screw(Small Head)

30751 Diff. Case ( Front/Rear )30761 Diff. Case (Center )

30751 Diff. Case ( Front/Rear )30761 Diff. Case (Center )

30779P5 O-Ring ( Orange )

30779P5 O-Ring ( Orange )

307790.5 x 26mmO-Ring

307792 x 12.8mmPin

307792 x 12.8mmPin

307794 x 10mm Washer



30769Diff. Bevel Gear ( Small )

30769Diff. Bevel Gear( Small )

30769Diff. Bevel Gear ( Small )

30769Diff. Bevel Gear ( Large )

30769Diff.Bevel Gear( Large )

Grease

* Position the O-ring as shown.

* Apply diff. Gear grease to the differential, during assembly.

ASSEMBLY OF THE BEVEL GEAR ( Builds two differentials, for front and rear. )

5 x 5mm Set Screw

3 x 5mmScrew

* Fill the diff. Case to approx 70% with grease.

Note:Always use shims as shown.

307734mmCross Pin

307734mmCross Pin

30771Diff. Shaft

30771Diff. Shaft

307793x10mmScrew

307793x10mmScrew

* Notice the straight holes are for front and rear.

900265 x 5mmSet Screw


39730Cap Joint

36730Cap Joint 30620

7 x 19mmBal lbearings

306207 x 19mmBall bearings

Screw Cement

Screw

Cement

31010Optional - Bevel Gear (Harden Steel)

301213mm Tube

301213mm Tube

301213 x 5mm Screw

* Push 3mm tubes into holes of the diff. Case.

30120Bevel Gear(Large/Metal)

31324 - FRONT OR REAR DIFF UNIT31325 - CENTER DIFF UNIT

ASSEMBLY OF THE FRONT AND REAR AND CENTER DIFFERENTIALS

30701 - Hex Screws, Misc. Sizes

Screw Cement

Screw Cement

ASSEMBLY OF THE SPUR GEAR

ASSEMBLY OF THE CENTER BRAKE CAP JOINT

ASSEMBLY OF THE BRAKE CAM FOR FRONT ASSEMBLY OF THE BRAKE CAM FOR REAR

31040Spur Gear, Steel

35314M3 Nylok Nut30111Spur Gear MountHardwares

301113X10mmScrews

301113X10mmScrews

Note case direction for screw head.

30170Joint Cap, Flat,Center Brake Disc.

30170Joint Cap, Flat,Center Brake Disc.

306207x19x5mmBall Bearing



30711Misc. Hex ScrewBag



Tighten hex screw on flat of shaft. Always check, if not sure. Car will move if loose.

Joint cap

30701M3x3Hex Screw

30213Cam, Brake

30171Lever, Brake Cam

30171Lever, Brake Cam

302115x8x2.5mmBushing

30212 (option)5x8x2.5mmBall Bearing


302115x8x2.5mmBushing


Use top hole in cam for lever. Place bearing and plate first before tightening lever.

31020Brake Disc.

31020Brake Disc.

ASSEMBLY OF THE CENTER DIFF. MOUNT

30201Center Diff. Mount

30201Center Diff. Mount

3x15mmScrews

3x15mmScrews

30180Brake Pads

30180Brake Pads

30180Brake Pads

30180Brake Pads

Note:Adjust brake pads for a o.5mm gap. If gap is to big, the lever not move enough to apply braking.

Rear CamLower Hole Used

Front Cam

M3x12Tapping Screws

M3x12Tapping Screws

30652Center Plate

Front30171Lever, Rod

3x3mmHex Screw

Diff must turn freely. Check brake pad spacing.

ASSEMBLY OF THE GEAR BOX( Assemble two gear boxes, front and rear. )

900265 x 5mm Set Screw

306306 x 13 x 5mmBall Bearing

306306 x 13 x 5mmBall Bearing

The Pinion Gear is held in placeby two bearings.

30082Cap Joint

30130Pinion Gear,Harden Steel

Screw Cement

1 2

30010Gear Box

Screw

Cement

Screw Cement

ASSEMBLY OF THE BEVEL GEAR

30121Mounting Hardware

30121Mounting Hardware

30121Mounting Hardwareinsert tubes, 4 pcs.

30120Bevel Gear. Large

31010Bevel Gear. Large, Harden

900265x5mmHex Screw

900265x5mmHex Screw

900265x5mmHex Screw

30082Joint Cap

30082Joint Cap

306207x10mmBall Bearing

Tighten hex screw onflat of shaft.

36620Front Shock Tower

* Insert front anti-roll bar before assembling shock tower.

4 x 16mmFlat HeadTapping Screw

30160Front Upper Arm Holder

ASSEMBLY OF THE FRONT SHOCK TOWER

4 x 16mm Flat HeadTapping Screw

307003 x 20mmFlat Head Tapping Screw

30160Front LowerArm Holder

307004 x 15mmTapping Screw( Small Head )

0

1

4 x 15mm Tapping Screw ( Small Head )

3 x 20mm Flat HeadTapping Screw

30010Gear Box

30010Gear Box


3 x 20mm Flat Head Tapping Screw

0

1

Option30710Front, Anti-rollBar

30700Misc. HardwareBag

0 10 20 30 40 50

mm

ASSEMBLY OF THE FRONT KNUCKLE ARM

ASSEMBLY OF THE FRONT UPPER ARMS AND FRONT LOWER ARMS

30090Front Upper Arm

M3 Nut

300929mm SteeringBall

300929mm SteeringBall

30101Shock EndPlate

3 x 12mmScrew

30090Front LowerArm

30091Steering Stop Block

302605x30mmSet Screw

30090Front Upper ArmBall End

3X10mmTapping Screw

*Leave 1.5mm.

Assembly of the right and left hand side are the same.



* A 4 x 10mm set screw is used to adjust the ride height.

3005117mm Hex HubsBlue

900265x5mmHex Screw

900265x5mmHex Screw30060

Steering Knuckle



151006mm AxlesUniversals

30070Dog BoneHalfshafts

Option30071 - CVA Joints, 6mm Pair

Note:Using a turnbuckle atthis point will be weakerthan the Set Screw part.

0

1



30102Front Body Post

* Cut the sharded area as shown. 3x8mm

Tapping Screw

900213mmE-Ring

900213mmE-Ring

900213mmE-Ring

900213mmE-Ring

301514mmUpper Arm Rod

300614x25mmFlat Head Screw

300614x25mmFlat Head Screw

ASSEMBLY OF THE FRONT ARMS INTO GEAR BOX

30151Front Lower armRodl

900183 x 25mmHex Cap Screw

36610Shock SpacerSteel

Option36507Alum. CNCShock Spacer

Note1 Degree0 DegreeAngle of Lower Arm Pin


* Builds two upper Rods for left and right hand-side.

366907mm PlasticArm Ball End

366907mm PlasticArm Ball End

368805x60mmTurnbuckle

368507mm Ball

0 10 20 30 40 50

mm

* Anticlockwise mark.

35mm

* Settled screw on D cut.

ASSEMBLY OF THE REAR UPPER RIGHT

30290Rear Upper Right



30051Wheel HubBlue

30300Rear Wheel Shaft

ASSEMBLY OF THE UPPER ROD

30101Shock End

Plate

3X10mmTapping Screw


* A 4 x 10mm set screw is used to adjust the ride height.

900202.5mmE-Ring

900202.5mmE-Ring

301523mmRear Arm Shaft

302864mm ThickerPlastic

30310Rear Lower Arm


900213mmE-Ring

900213mmE-Ring

900213mmE-Ring

30151Arm Shaft (Long)

30351Rear Wheel Toe-inAdjuster

1 Degree

1.5Degree

* Set triangle marks in the direction shown in Fig.1.

Fig.1

* Don't over tighten tapping screw.

36810Rear Shock Tower

* Insert stabilizer before assembly of the shock stay.

ASSEMBLY OF THE REAR SHOCK TOWER

ASSEMBLY OF THE REAR LOWER ARMS

4x16mmFlat HeadTapping Screw

3 x 20mmFlat HeadScrew

30350Rear Lower Arm Holder

30340Anti-roll Bar


* Insert rear drive shaft before assembly.

353143mmNylon Lock Nut

900193 x 25mmCap Screw

* Insert into rear hub.


36610Shock Support

ASSEMBLY OF THE REAR UPPER ARM ROD

900183 x 25mm Cap Screw

900193 X 25mm Cap Screw

3 x 15mmScrew

35314M3Nylon Lock Nut

35314M3 Nylon Lock Nut

304023 X 30mmTie Rod

304016mmBall Joint

304016mmStabilizer Ball End


3 x 15mmScrew




0 10 20 30 40 50

mm

15mm

ASSEMBLY OF THE REAR ANTI-ROLL BAR

36110Dog Bone, Rear

30340Anti-roll Bar Kit

ASSEMBLY OF THE WING SUPPORT

3 x25mmTapping Screw

3 x25mmTapping Screw

3 x 20mmTapping screw

3 x 20mmTapping screw

30271Wing Support

30270Wing Support

30271Wing Support

30270Wing Support

30270Plastic Post

3 x 25mm Tapping Screw




ASSEMBLY OF THE WING SUPPORT ONTO THE SHOCK TOWER


3mmNylon Lock Nut

307004 x 15mmTapping Screw

3 X 25mm Cap Screw


M3 Nylon Locknut

30270Wing SupportAssembly

30270Rear Wing Support Kit

ASSEMBLY OF THE SERVO SAVER

3 x 15mmScrew

36742Servo SaverBushing

36742Servo SaverBushing

36750Servo SaverConnector

3mmNylon Lock Nut

3mmNylon Lock Nut

367436 mm E-Ring

35314M3 Nylon Locknut

307003 x 15mm Screw

36740 Servo Saver Kit

367436mmE-Ring

367436mmE-Ring

367436mmE-Ring

36746mmE-Ring

36740Servo SaverHorn A

36740Servo SaverHorn B

36740Servo SaverHorn A

36740Servo SaverTop Adapter

36741Servo SaverSpring

36740Servo SaverShaft(Brass)

36740Servo SaverShaft(Brass)

36740Plastic Tube

367418x12mmWasher

ASSEMBLY OF THE FRONT PLATE ANDSTEERING ROD

3 X 10mmScrew

30540Front Plate

30380Servo SaverPost

* Made two steering rods for left and right-side.

* Anticlockwise mark.

304106mm Steering Ball End



304106mm Ball

304003mmTurnbuckle

28mm

0 10 20 30 40 50

mm

3 x 20mmFlat Head Screw

3 x 20mm Flat Head Screw

3 x 15mm Screw

3 x 25mm Screw

3mm Flange Nut ( Steel )

Front Steering Rod ( Right )

Front Steering Rod ( Left )

34049Center Chassis Brace( Front )

3x12mmScrew

ASSEMBLY OF THE FRONT PLATE ANDSTEERING ROD




Screw

Cement

Screw Cement

Knuckle arm (Right-side.)

ASSEMBLY OF THE FRONT PLATEONTO THE FRONT GEAR BOX

30700Misc. HardwareScrew Bag

34041Chassis5 Degree KickupHard Coated

ASSEMBLY OF THE GEAR BOX ONTOCHASSIS

3 x 10 mm Flat Head Screw


* Insert the front bumper before assembly.

30240Front Bumper

4 x 16mmFlat Head Tapping Screw


* A 3 x 10mm flat head screw are use for servo post.


* Insert drive shaft into cap joint.


Center Diff.Assembly

4 x 16mmFlat HeadTapping Screw 4 x 16mm

Flat HeadTapping Screw

36100Center Drive Shaft (Front)

36100Center Drive Shaft (Rear)

3 x 25mm Flat Head Tapping Screw

3 x 10mmFlat Head Screw( 3 Pcs)

34080Nylon Stone Guard(Left-Side)

34080Nylon Stone Guard(Left-Side)

ASSEMBLY OF THE STONE GUARD Assembly of the right and left hand side are the same.

3 X 8mm Washer

3mm Nylon Locknut

3 x 5mm Screw

3 x 20mm Cap Screw

* Place the clutch shoes with the clutch springs over the 3 pins of the flywheel. Using a screw driver as a lever, bend the small end of the clutch spring behind the clutch nut and press down to snap shoe in place.

* Fit the flywheel using a crosswrench or deep socket.

If engine turns when tightening,hold piston with large thick tie-wrapsand hard wood in exhaust port. Do not use metal, it will damage engine.

#10098SG Nut & Shim KiT

ASSEMBLY OF THE CLUTCH INTO ENGINE


#10016Air FilterSpongeRefills

#10017 - Blue#10018 - Yellow#10019 - RoseFoam Air filters Unit

#10014 - Mount Wire

#10021 - Black#10027 - Yellow#10028 - Pink#10029 - BlueAir Filter Connector Nylon Strap

( Small )

Nylon Strap ( Small )

You must oil foam filter before use.Filter will not work if not oiled.

Clean with soap and water only.You will damage foam if washedif fuel!

ASSEMBLY OF THE AIR FILTER

#10102Clutch Spring

#10010Clutch ShoesBlack Type

* Shoes are trailing.

3 x 8mmWasherMisc. Hardware#10099

#341105x10x4mmBall Bearing

#341105x10x4mmBall Bearing

#10040 (stock)3 PinFlywheel, Taper#100433 PinFlywheel, Fan

#10091Clutch Nutscrew type

3 x 5mmScrew

#10330Brass, Corn(large hole)

#10329Brass, Corn(sml hole)

304813 x 20mmHex Screw



#30480Engine Mount

#10398 - 12T#10399 - 13T#10400 - 14T (stock)#10401 - 15T#10402 - 16T#10403 - 17T#10404 - 18TClutch Bells

SEE NOTESABOVE

Notes:Non-Pull Start Engines...• Alum. Washer behind the flywheel is not needed when using Force engines or similar types. O.S. Engines will require washer spacer.

• To check!..place the brass corn against the engine bearing, then flywheel. You should be covering one or two thread of the engine shaft. If this is the case, you do not need an additional washer behind the flywheel.

You must cut the engine shaft if too long. Count 6 threads in front of the flywheel and mark. This is all you need to tighten the clutch nut and mount the flywheel.

Force Pull Start Engine w/threaded shalf...• Force Pull Start Engines required NO spacer and no shaft cutting. The engines comes with an alum cast driver washer, you use this part as the spacer, not the alum. washer shown. Also, use the special flywheel brass corn. This corn fits the thread shaft diameter so you can tighten the flywheel against the drive hub.

NoteSG Shaft

ThreadedShaft

Options

Clutch Spring10100 - Springs, Polished, Med.10101 - Spring, Gray, Hard10102 - Spring, Black, Stock

Clutch Shoes, 3 shoe clutch10010 - Shoes, Carbon Material, Black10011 - Shoes, Alum. CNC Blue, Lite Weight10012 - Shoe, Alum. CNC Purple, Med. Weight

Option10799Flywheel Wrench

INSTALLATION OF THE FUEL TANKAND ENGINE ONTO CHASSIS

30280Fuel Tank125cc

30287Tank Mount Posts

10114Flat Head EngineMount Screws

ASSEMBLY OF THE FUEL TUBE




34032Receiver Box

34061Radio Tray

ASSEMBLY OF THE RADIO TRAY AND RECEIVER BOX

*Tighten the strap and cut off the excess.

10180Silicone Tube

10068Manifold Adapter( Red Silicone )

10120ManifoldSpring

5x5mmSet Screw

4x10mmFlat HeadScrew

30491Muffler Wire

4mmNylon Lock Nut

Nylon Strap( middle )

10060Manifold

10079Pressure Nipple

30490Muffler

* Drill a hole (Size 3.5mm) in the place and align as shown. Use a two part epoxy glue to full seal the nipple base to the nipple.

ASSEMBLY OF THE MANIFOLD ANDMUFFLER

* Read this page with very carefully.

To Carburetor

34031Posts

Option:10078Pipe MountingPost, Alum.

Option:31991Polished, Manifold31992Polished, Tuned Pipe

Option:10182Silicone Tube, Red10183Silicone Tube, Yel.10184Silicone Tube, Blue

Switch

10280Switch Cover

* Use the screw provided with your witch.

* Connect the wire to receiver.

* Connect battery case wire to switch.

* Connect switch wire to receiver.

Receiver

Battery Case

3 x 10mm Screw

3 x 10mm Screw

ASSEMBLY OF THE REAR STIFFENER

34070RearStiffener

2.6x10Tapping Screw

2.6x10Tapping Screw

* Use the small strap tp secure the servo wire.



34020Servo Mount

34020Servo Mount

Throttle Servo

Steering Servo

ASSEMBLY OF THE SERVO AND RECEIVER

34049SensorSupport

Receiver Box Cover

Note:It is best to not use theswitch, switch can fail. Allracers plug directly intoreceiver for power.

Body ClipStorageTransponder

* Use the screw provided with your radio.

301722mm Rod

* Use the screw provided with your radio.

10768Steering Servo Horn

ASSEMBLY OF THE SERVO HORN LINKAGEINTO SERVO

30560Antenna Tube

* Push 30560 into antenna post.

3x10mmTapping Screw

*Insert the 2mm brake rod through brake lever.

Antenna Post

3x10mmFlat Head Tapping Screw

3x10mmFlat Head Tapping Screw

ASSEMBLY OF THE BRAKE SYSTEM

3X3mmSet Screw

361402mm Adjust Nut

Servo Mount2x25mmScrew

30800Brake & Linkage Kit

Adjust Mount

3mmNut

Slider3x12mmScrew

2x8mmScrew

2mm Nut2mmTie-Rod End

2mmTie-Rod End

2x6mmWasher

2x6mmWasher

2x4mmScrew

2x4mmScrew

Screw Cement

10768Servo Horn

A-416mm Ball & Socket30410



304023 X 30mmTie Rod

304116mm Ball & Socket

304116mm Ball & Socket

ASSEMBLY OF THE FRONT STEERING ROD

* To the steering servo saver.

3x12mmScrew

3x12mmScrew

0 10 20 30 40 50

mm

17mm

* Align the steering servo as shown.

ASSEMBLY OF THE THROTTLE LINKAGE SYSTEM

* Take the plastic collar from brake system plastic parts.

3X3mmSet Screw

10300Alum.StopperFuel

Tube ( 6mm )

* Snap On.

3X3mmSet Screw

10300Alum.Stopper

3X3mmSet Screw

Plastic Collar

Throttle Spring

301722mm Rod

10300Alum.Stopper

30530ThrottleBall Joint


Brake

Idle Position

Full Throttle

(Part of 30800 linkage kit)

ALIGN THROTTLE SERVO AND BRAKE SAME AS SHOWN

Brake is not on

Engine at idle

( Neutral Position )

Brake is on

Brake Adjust Nut

( Braking Position )

Brake is not on

Engine at full throttle

( Full Throttle Position )Less Brake

More Brake

TightenLoose

* Tighten or loose the adjuster nut will change the brake.

3 x 20mmScrew

ASSEMBLY OF THE FRONT AND REAR SHOCK ABSORBER Assembly of the right and left hand side are the same.

3mmNylon Nut

M3 Nylon Nut..........4

3 x 20mm Screw..........4

3mmNylon Lock Nut

3 x 20mmScrew

3mmNylon Nut

32051PlasticBushing

32051PlasticBushing

* Take the plastic bushing from the shock plastic parts tree.3mm

Nylon Lock Nut

25mm

25mm

0510152025 5 10 15 20 25

2626

ASSEMBLY OF THE WING

* Drill two 7mm holes for mounting.

40084 Wing, Yellow

* Check the hole spacing on the underside.

14150Wing Clip(Long)

Wing Plastic Washer

Options:40083 - Wing, White40084 - Wing, Yellow40085 - Wing, Red40086 - Wing, Lime40087 - Wing, Blue

ENGINE BREAK-IN AND TUNNING(BREAK-IN THE ENGINE BEFORE DRIVING THE CAR!)

OPTIONAL OFNA CAR STANDS

TUNING AFTER BREAK-IN

Idle adjuster screw &Barrel Stop

Lean Rich

• Choose a wide clear outdoor location with low dirt and dust.• Set the car on box or holder with wheels off the ground.• Turn on radio and car. Make sure throttle is at idle position.• Fill fuel tank and set master engine needle.• Prime fuel line and Heat glow plug before pull starting engine.• When started, let engine HIGH idle for two tanks of fuel.

Close master needle by turning clockwise until it stops. Then open needle by turning counterclockwise 3 turns (rich setting). When running car, adjust carb with 1/8 clockwise turns,

slowly leaner, until the top speed good. Check engine temp, if possible, for no more 250 degrees.

Adjust barrel stop so it will not close, accept for a small gap. This gap will be the idle setting. You will notice the idle will increase with a wide gap.

Adjust low end needle for best throttle response. Use only small turns. From idle, give it full throttle, if throttle is slow lean out needle until good.

WOOD BLOCK

APPENDIX PAGES

Ofna Ultra LX Pro

Documents

Transcript of Ofna Ultra LX Pro