ASSEMBLY INSTRUCTIONS LEKI EXTRA 330SC - graupner.de EXTRA 330SC_1000... · The LEKI EXTRA 330SC is...

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMA NY Modifications reserved! No liability for printing errors! 10/2011 - 1 -

Order No. 9352

ASSEMBLY INSTRUCTIONS

LEKI EXTRA 330SC

RC aerobatic model for 2 LiPo cells

This model requires a HoTT radio control system with at least four functions


It is essential to read and observe the safety notes in the appendix to these instructions. If you ever pass this model on to another person, be sure to include the complete assembly instructions.

Introduction The LEKI EXTRA 330SC is a superbly manoeuvrable RC aerobatic model, and its compact dimensions make it easy to transport. The small dimensions should not mislead you into thinking that the assembly and operation of the model do not require any model aircraft experience. The model is very highly pre-fabricated. Nevertheless the construction stages described in these instructions must be carried out with great care to ensure that the model can be used safely and successfully. The all-up weight must not exceed 1000 g. RC system accessories (not included) You will need the items listed below in order to complete and operate the model. COMPUTER SYSTEM MX-16 GRAUPNER HoTT 2.4 GHz Order No.33116 Transmitter charge lead Order No.3022 Brushless motor COMPACT 345Z Order No.7738 ELECTRIC PROP 10x5” Order No.1326.10x5 GRP propeller spacer Order No. 197.60 COMPACT CONTROL 45 Order No.7224 LiPo 2/1600 7.4 V/1.6 Ah Order No.7634.2 G 3.5 charge lead Order No.2970.L ULTRAMAT 16 S battery charger Order No.6468 Servo DES 476 BB (5 required) Order No. 7915 Servo extension lead 100 mm (2 required) Order No.3935.11 Servo extension lead 180 mm (2 required) Order No.3935.18 Hose binders 102 mm Order No. 1521.52 Hose binders 188 mm Order No. 1005 Hook-and-loop cable ties Order No. 1587 Tools and adhesives required (not included) Balsa knife Order No.980 Quick-drying glue Order No.5821 Activator for quick-drying glue Order No.953.150 UHU ALL PURPOSE ADHESIVE�Power Order No.1096 You will also need the following items: Philips screwdriver, open-end spanner SW 12, flat-nose pliers, wire cutter, drill Ø 1.6, Allen wrenches SW 1.5 and SW 2.5 mm, soldering gun and solder, hair dryer, sandpaper, geometric protractor, overhead marker, transparent tape, wood pulp paper, protective gloves, safety glasses. Assembly instructions Please read these building instructions completely before you start building, so that you have a clear idea of the sequence required. Before each stage, identify all the parts, tools and adhesives you will need, and have them ready. When working, always lay the parts on a clean, smooth surface, or a layer of foam material. Unless the instructions specifically state otherwise, use quick-drying glue with activator as adhesive. The best method is to apply glue to one face, then spray activator on the


opposite face. Make sure that no residual adhesive gets on your hands or on the surface of the model. Immediately wipe of excess adhesive with wood pulp paper. Caution: Cyano-acrylates must not come into contact with any part of your body or the eyes. For this reason, we recommend that you wear p rotective goggles when using this material. Store the adhesive out of the reach of children. For safety reasons, use only the adhesive mentioned above. Ple ase observe the operating instructions and safety notices for the respective accessories The wing First apply adhesive (UHU ALL PURPOSE ADHESIVE Power) to the inserted aileron hinges and push up the aileron until there is a gap of about 1 mm. After waiting for it to dry, check whether the aileron is secure.

Unscrew the servo cover from the wing and fit in the servo. Separate the excess levers and drill the outermost hole of the servo lever to Ø 1.6 mm. Put the servo into the neutral position, attach the servo level vertically, and screw it tight. Use cyano-acrylate to glue the servo to the respective attachment tab.

Insert a string to pull the servo lead carefully into the wing. Screw on the servo cover and make the aileron connection. Connect the pushrods and glue in the horn of the aileron. Note: If you want to do extreme flight manoeuvres, you should use the longer servo levers that are also included with the servo.


The figure shows the assembled aileron linkage. Please note that the servo level length should be at least 12 mm to keep the clevis from colliding with the wing.

The figure shows the servo lead exiting at the wing root. Later, use the CRP tube Ø 8x280 mm to push the halves of the wing onto the fuselage.

Fuselage and tail group First place the motor spindle, motor mount, and locking ring onto the motor; these parts are included as accessories in the package for Order No. 7738.

The figure shows the individual parts for the motor spindle and motor mount; tighten all screws.

The figure shows the motor with attached motor mount and motor spindle. Separate the motor leads and remove about 5 mm of insulation. Apply solder to the ends of all leads and then solder on the G 3.5 connectors (included with Order No.7738). Insulate the connector shaft with the heat-shrink sleeves (included with Order No.7738) . Use a hair dryer to shrink the heat-shrink sleeve. Then do a test run of


the motor. Viewed in flight direction, the motor should rotate to the right; if this is not the case, switch any two of the leads and re-insert.

Using the 4 M 3x10 mm and the washers and locking rings shown, screw the motor in tight.

Place the GRP propeller spacer onto the propeller, enlarge the cut-outs in the spinner cap to fit the propeller, separate the two short pins on the spinner back plate, so that the spinner cap fits and can be pushed on without any stress.


Now adjust the motor with the moveable motor bulkhead so that spinner and motor bonnet match up. When everything fits, attach the motor bonnet with tape. Keep 1 mm of play between the spinner back plate and fuselage.

The motor bonnet, which is still held in place by tape, is now screwed into place with four Ø 2.2x6 mm metal screws as shown in the illustration. Pre-drill at Ø 1.6 mm.

Glue the motor bulkhead in place through the cooling air intakes.

Remove the motor bonnet again, glue in the 8x8 mm chamfer strips and completely glue in the motor bulkhead from the front as well.


Use UHU ALL PURPOSE ADHESIVE Power to glue in the rudder hinges of the tailplane and vertical stabilisers in accordance with the method already described.

Use a geometric protractor and overhead marker to exactly mark the midline of the tailplane; then area to be glued to the fuselage. Use the hot tip of a soldering gun to cut through the covering sheet, and pull it off.

Slide the tailplane into the fuselage exactly centred and glue it from the inside as shown. For the lowest rudder hinge of the rudder cut a slit in the fuselage; then push on the vertical stabiliser as well. First try this procedure without any adhesive. Above all, make sure you do not use activator for the gluing process.


The rudder is controlled by control leads on two sides. The figure shows the double rudder horn and the clevis with threaded bushing on the servo side. Insert the control leads into the fuselage and secure them as shown with the pressed-together bushing.

The figure shows the central rudder servo with the inserted control leads, which are adjusted and tightened using the threaded bushings. For this purpose, glue in the rudder horn and drill a Ø 1.6 mm hole in the servo lever arm. Place rubber grommets on the servo, insert the hollow rivets from below, and screw in the servo. All servo attachment elements are included with the respective servos.

The two-part elevator is controlled by two separate servos. The figure shows the left elevator servo. Make sure that the two rudder horns are glued in exactly the same. Note: If you do not wish to fly any extreme flight manoeuvres, you should reduce the rudder deflection in accordance with the transmitter setting.


The figure shows the right elevator servo the control already attached. Undercarriage and cockpit canopy

The figure shows the undercarriage struts, the wheel covers, and the elements for attaching the wheel and wheel cover to the undercarriage struts.

First trim the transitional cowling to the fuselage and slide it onto the undercarriage struts; check the fit to the fuselage.

The figure shows the individual parts of the wheel axle and left wheel cover with the 3x9 mm elongated hole. Glue the two plywood spacers flush with the axle, slide on the wheels, screw on the M 3 nut, and insert into the wheel cover.


The figure shows the completed wheel with cover, which is now firmly connected to the undercarriage strut by means of washer and M 3 nut. Align the two wheel covers exactly. When everything fits, secure the connections with adhesive. Caution: Do not get any adhesive on the wheel hub.

The figure shows the completely assembled and attached undercarriage, which is screwed on with three M 3 screws, including locking rings. Do not remove the covering sheet to do this; just puncture it for the screws. Put the fuselage fairing in place, glue in the pilot, and glue on the cockpit canopy with UHU ALL PURPOSE ADHESIVE Power, hold in place with tape. Note: If you value particularly agile flight characteristics, you can do without the bust of the pilot in order to save about 30 g in all-up weight.


Decals Cut out the individual decals and name placards and apply them to the model as shown in the illustrations on the kit box lid or in the following two-page view.

Two-page view

The original LEKI EXTRA 330SC at Hahnweide 2009.


Installing the receiver and LiPo battery The first step is to connect the servo leads to the receiver; we recommend the following sequence: speed controller to socket 1, left aileron servo to socket 2 (extension cable 100 mm), left elevator servo to socket 3 (extension cable 180 mm), rudder servo to socket 4, right aileron servo to socket 5 (extension cable 100 mm), right elevator servo to socket 6 (extension cable 180 mm). Now use the radio controller to test all the functions. Caution: After closing the G3.5 connector, the motor can start; do not touch the propeller!

The figure shows the speed controller and GR-12 HoTT receiver held in place by hose binders; the LiPo battery is held in place by hook-and-loop cable ties. The photo also how each wing half is secured by an M 3 screw. Rudder deflections The following rudder deflections are recommended, but can be changed as desired. Ailerons 25 mm in each direction, elevators 25 mm in each direction, rudder 50 mm; all measured at the inboard or bottom edge of the rudder. Balancing Check the balance with the model in ready to fly condition, meaning with the LiPo connected. The centre of gravity is 72 mm from the leading edge of the wing. Adjust it by moving the LiPo battery as needed. Check the centre of gravity by simply supporting the model under the wing on two fingers. The model should balance level at the point indicated. Flying Fly the model for the first time with rudders in the neutral position on a day with little or no breeze. A smooth runway into the wind is ideal for a ground start. If no runway is available, start the model by means of a hand start into the wind. Use minimal aileron and elevator corrections to keep the model in a straight climb. The fine trim is done via the trim slider below or next to the joysticks. Always land the model flying directly into wind, with the motor idling but not switched off. Just before touch-down reduce air speed through careful use of up-elevator. Always land the model flying into


the wind. Here at GRAUPNER Modellbau, we hope you have many enjoyable flights with your new model, the LEKI EXTRA 330SC


Safety notes Valid third-party insurance must be obtained before you operate an y model aircraft; this is now a legal requirement. Before you attempt to assemble and fly the model, it is esse ntial to carefully read all the assembly and operating instructions. You alone are responsible for t he safe operation of your RC model aircraft. Young persons should only be permitted to build an d operate this model under the instruction and supervision of an adult who is aware of the hazards involved in this activity. In legal terms, our models are classed as aircraft and as suc h are subject to legal regulations and restrictions which must be observed. Our brochure “Modellflugrec ht, Paragrafen and mehr” (Model Aviation Law, Legal Requirements and more) is avai lable under Order No. 8034.02, and contains a summary of all these rules. Your loca l model shop should have a copy which you can read. In addition, you must also observe postal regulati ons for the remote control system. You will find more information on this subject in the operating instructions supplied with your radio control system. Be sure to use only those parts included in the kit, together wi th other genuine Graupner accessories and replacement parts as recommended expressly by us. Even if you change a single component you can no longer be sure that the system will wor k reliably, and such changes also invalidate your guarantee. Take care to avoid short-circuits and reversed polarity. The high energy density of LiPo batteries involves a risk of fire and even explosion. A radio-controlled model aircraft can only work properly and fulfi l your expectations if it is built very carefully and in accordance with the assembly instructions. To avoid injuring people and damaging property, it is essential to be careful and painstaking a t all stages of operating your model. Nobody would climb into a full-size glider and attempt to fl y it without undergoing suitable training beforehand. Successful model flying is also only poss ible with suitable training and plenty of practice. As manufacturers, however, we are not in a position to influen ce the way you build and operate your RC model aircraft. All we can do is expressly point out t he hazards involved in this activity, and for this reason we reject any liability. We suggest that you ask an experienced model flyer for help, or j oin a model club or model flight training school. Your local model shop and the specialist ma gazines are excellent sources of information. It is always best to join a club and fly at the approved model flying site. Adhesives contain materials which may be hazardous to health under certain circumstances. Read and observe the notes and warnings supplied by the manufacturer of these materials. The operator of the model must be in full possession of his or her bodily a nd mental faculties. As with car driving, operating a model aircraft under the influe nce of alcohol or drugs is not permissible under any circumstances. If there are passers-by or spectators at your flying site, make sure that they are aware of the dangers inherent in your activity before you start the motor, and ins ist that they keep a safe distance away. Always keep a safe distance from people and objects when flying; never fly low over people’s heads, and never fly directly toward them! Models should only be flown in a temperature range of -5° to +35 ° C. Extreme temperatures can lead to changes in battery capacity and material characteris tics, weakened glued joints, and other unwanted effects.


All model fliers should take care to ensure that the public safe ty, especially that of people and property, as well as orderly flying operations, are not endangered or disturbed. Never operate your model aircraft close to high-tension overhead cables, industrial sites, residential areas, public roads, squares, school playgrounds, public pa rks or sports grounds et cetera. Pre-flight check Check all the model’s working systems before every flight: sw itch on the transmitter followed by the receiving system. Extend or the transmitter aerial, then check that all the model’s control surfaces are at neutral (centre), work properly, and deflect in the proper direction. Repeat the check with the motor running, while someone holds the model securely for you. If you are a relative beginner to model flying, we strongly re commend that you ask an experienced helper to support and help you during the first few fligh ts. Don’t ignore our warnings. They refer to materials and situations w hich, if ignored, can result in fatal injury or permanent damage. Propellers and other rotating parts that are powered by a motor constitute a constant hazard and represent a real risk of injury. Do not touch them with any pa rt of your body. For example, a propeller spinning at high speed can easily cut your finger. Keep well clear of the rotational plane of the propeller ! You never know when some part may come loose and fly off at high speed, hitting you or anybody else in th e vicinity. This can easily result in serious personal injury. Ensure that no other object ca n come into contact with the revolving propeller. Make sure that no object is blocking the propeller. Every time you intend to operate your model, check carefully that it and everything attached to it (e.g. propeller, gearbox, RC components, et cetera) are in good condition and undamaged. If you find a fault, do not fly the model until you have corrected it. Before you switch the radio system on, always make sure that your frequency is vacant. Radio interference caused by unknown sources can occur at any time without warning. If this should happen, your model will be uncontrollable and completely unpredictable. Never leave your radio control system unattended, as another person might pick it up and try to use it. Do not switch on the electric motor unless you are sure that the re is nothing in the rotational plane of the propeller. Electric motors with the propeller att ached should only be run when firmly mounted. You should always be aware of the model’s position and attitude throughout e ach flight, so that you can execute control and avoidance manoeuvres. If you detect a control problem or interference during a flight, immediately land the model for the s ake of safety. Models must always give way to full-size aircraft. Take-off and landing s trips should be free of people and other obstacles. To ensure proper operation of your RC system, make sure that the ba tteries are kept fully charged. Never use batteries which are hot, faulty or damaged. At all times heed the instructions provided by the battery manufacturer. Before each flight check that all functions on the model aircraf t are working correctly, and that the radio control system is in good order and operating at full range. Note that the motor control (throttle) function on the transmitte r must always be moved to the OFF position as the first stage in preparing for a flight. To keep the electric motor from starting unexpectedly, always switch the transmitter on first, and onl y then the receiving system. Also, always switch the receiving system off first and only then the transmitter.


Check that the control surfaces follow the movement of the transm itter joysticks. After each session, remove the battery from the model, discharge it to the recommended level, and store it in a safe place, well out of the reach of childre n, at a temperature in the range about +5°C to +25°C. These notes are intended only to make you aware of the many dangers and hazards that can arise if you work carelessly or irresponsibly. If you take r easonable care, model flying is a highly creative, instructive, enjoyable and relaxing pastime. Manufacturer’s declaration: If material defects or manufacturing faults should arise in a product distributed by us in the Federal Republic of Germany and purchased by a consumer (§ 13 BGB ), we, Graupner GmbH & Co. KG, D-73230 Kirchheim/Teck, Germany, acknowledge the obl igation to correct those defects within the limitations described below. The consumer is not entitled to exploit this manufacturer’s decla ration if the failure in the usability of the product is due to natural wear, use under competiti on conditions, incompetent or improper use (including incorrect installation), or external infl uences. This manufacturer’s declaration does not affect the consumer’s lega l or contractual rights regarding defects arising from the purchase contract between th e consumer and the vendor (dealer). Extent of the guarantee If a claim is made under guarantee, we undertake at our discre tion to repair or replace the defective goods. We will not consider further claims, especial ly for reimbursement of costs relating to the defect (e.g. installation / removal costs) and compensation for consequent damages unless they are allowed by statute. This does not af fect claims based on legal regulations, especially according to product liability law. Guarantee requirements The purchaser is required to make the guarantee claim in writing, a nd must enclose original proof of purchase (e.g. invoice, receipt, delivery note) and this guarantee card. He must send the defective goods to us at his own cost, using the address state d above. The purchaser should state the material defect or manufacturing faul t or the symptoms of the fault in as accurate a manner as possible so that we can check whether our guarantee obligation is applicable. The goods are transported from the consumer to us and from us to the cons umer at the risk of the consumer. Duration of validity This declaration only applies to claims made to us during the claim period as stated in this declaration. The claim period is 24 months from the date of purcha se of the product by the consumer from a dealer in the Federal Republic of Germany (date of purchase). If a defect arises after the end of the claim period, or if the evidence or documents required according to this declaration in order to make the claim valid are not pre sented until after this period, then the consumer forfeits any rights or claims from this declara tion. Limitation by lapse of time If we do not acknowledge the validity of a claim based on this de claration within the claim period, all claims based on this declaration are barred by the st atute of limitations after six months from the time of claim, but not before the end of the claim period. Applicable law This declaration, and the claims, rights and obligations arising fr om it, are based exclusively on the applicable German Law, without the norms of international private law, and excluding UN retail law.

ASSEMBLY INSTRUCTIONS LEKI EXTRA 330SC - graupner.de EXTRA 330SC_1000... · The LEKI EXTRA 330SC is...

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