Order No. 4239 BUILDING INSTRUCTIONS ELEKTRO-ROOKIE QR RC electric-powered model for three LiPo cells of around 2500 mAh This model requires a 3-function or 4-function HoTT radio control system GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY Modifications reserved. No liability for printing errors. Id.-Nr.
Please be sure to read through the Safety Notes in the Appendix to these operating instructions. If you ever dispose of the model, it is important to pass on the complete building instructions to the new owner. Introduction The ELEKTRO-ROOKIE QR is an RC model aircraft designed expressly for the newcomer to model flying, and offers a superb performance in the air. Either the rudder or the ailerons can be set up as the primary directional control.
Fuselage and fin You will find a strip of foam linking the bottom edge of the rudder to the fuselage; cut this away, and move the rudder repeatedly from side to side to free up the integral hinge line. Glue the fuselage stiffening tube (3) in the right-hand fuselage side (1), followed by the two “snake” outer sleeves (4), noting that the sleeve for the rudder should be fitted first; it must project by 15 mm at the front end.
shown in the photo. Tighten the nuts just to the point where the swivel pushrod connectors rotate smoothly, but without lost motion. Screw the servo output arms to the servos in the arrangement shown in the picture. Fix the rudder servo in the right-hand fuselage shell (1) with a single drop of cyano on each mounting lug and one on the underside of the servo case. Caution: do not use thin cyano to secure the servos, or too much cyano of any type, as it could penetrate the case and jam the moving parts.
Connect the power system - but without fitting the propeller - and check that it functions properly, referring to the instructions supplied with the power set. Fit the countersunk plastic screw (22) in the threaded insert (11), then glue the insert in the top of the fin as shown, again using cyano. Remove the plastic screw. The fuselage shells (1) and (2) are now ready for joining.
Caution: the next procedure demands your full concentration. Take great care to avoid glue getting onto the area of the rudder hinge. Keep some absorbent kitchen paper to hand so that you can wipe away excess cyano immediately. Tip: if you are not an experienced model builder, avoid using activator spray for this procedure. Instead tape the fuselage shells together and leave the assembly while the glue sets hard; this may take several hours.
The control surface linkages Cut off the excess length of the snake outer sleeves (4) at the tail end of the fuselage. Slip the rudder pushrod (16) into the outer sleeve from the tail end, and slip the front end through the swivel pushrod connector (5) mounted on the right-hand servo. Connect the rudder horn (15) to the pre-formed end of the pushrod, then glue the horn in the slot in the rudder. Install the elevator pushrod (18) in the same way.
The picture shows the version of the wing without aileron servos. Fit 14 mm long output arms (supplied with the servos) on the aileron servos. Set the servos to centre from the transmitter, press them into the servo wells, and press the servo leads in the channels. Check that the servos work properly before securing them with a drop of glue on each mounting lug. Installing the receiving system GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY Modifications reserved. No liability for printing errors.
The illustration shows the HoTT receiver installed above the rudder servo using Velcro tape (32). Route the receiver aerials through the fuselage opening above the speed controller. We recommend the following receiver channel assignment: Connect the speed controller to receiver socket I, the left aileron servo to socket II, the elevator servo to socket III, the rudder to socket IV, the right-hand aileron servo to socket V.
Fitting the propeller Install the propeller on the motor as shown in the photo, using a 1.5 mm Ø steel rod to tighten the spinner. Caution: fit the propeller with the lettering facing forward, i.e. towards the model’s nose. If you fit it the other way round, motor power will be greatly reduced. Decals It is not necessary to paint the model’s SOLIDPOR® components. If you wish to give the aircraft a coloured finish, we recommend the use of GRAUPNER LEXACOLOR spray paints, Order No. 945...
Balancing Assemble the model completely, with all the RC and power system components in place. The Centre of Gravity range is 70 mm to 80 mm aft of the wing root leading edge (see markings on the underside of the wing). Support the model at the stated CG position with two fingers under the wing roots, and allow it to hang freely: when balanced correctly, the fuselage will hang level. Flying For the initial test-flight wait for a day with little or no breeze.
Parts List - ELEKTRO-ROOKIE QR Part No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Description R.H. fuselage shell L.H. fuselage shell Fuselage stiffening tube Control “snake” outer sleeve Swivel pushrod connector Servo output lever Self-locking nut Motor mount Cheesehead screw COMPACT 300 7.4 V power set Threaded insert Canopy retainer clip Canopy Canopy retainer spigot Control surface horn Rudder pushrod No.
If you don’t know the location of your nearest disposal centre, please enquire at your local council office. Safety Notes Before you fly the model for the first time it is essential (and a legal requirement) to take out an insurance policy designed to cover modelling risks. Be sure to read right through the instructions covering assembly and operation of your model before you attempt to operate it for the first time. You alone are responsible for the safe operation of your radio-controlled model aeroplane.
All model flyers should behave in a way which minimises the danger to people and property. Never act in any manner which will disturb other pilots, or have an adverse effect on safe, orderly flying at the site. Don’t operate your model aeroplane in the vicinity of overhead power cables, industrial sites, residential areas, public roads, school playgrounds or sports fields etc.
Check that the control surfaces work in the correct “sense”, i.e. that they deflect in the direction which corresponds to the movement of the stick. After each session remove all the batteries from the model and store them in a discharged state at a temperature of about +5° to +25°C. They must be k ept out of the reach of children. Please don’t misunderstand the purpose of these notes.
