No. 9920.100 OPERATING INSTRUCTIONS HoTT-FAN ARTF RC model aircraft fitted with retractable ducted fan unit This model requires a HoTT COMPUTER SYSTEM GRAUPNER/SJ GmbH D-73230 KIRCHHEIM/TECK GERMANY Modifications reserved. No liability for printing errors.
It is essential to read and observe the special safety notes included in these operating instructions and the appendix. If you ever dispose of the model, please be sure to pass on the complete operating instructions to the new owner. Introduction The Graupner/SJ HoTT-FAN is a particularly attractive RC model aircraft which offers an excellent performance in the air. The original carton can be used as a convenient method of storing, protecting and transporting the model.
The illustration shows the fixings (hook-and-loop tape) for the LiPo flight battery, the M2.5 x 16 retaining screws for the V-tail assembly, and the M2.5 x 5 clamping screw for the swivel pushrod connector. You will find these parts in the polythene bag of small hardware items. The photo shows the V-tail assembly unscrewed from the fuselage, with the tail pushrods fitted through the connector barrels.
With the canopy removed, slide both wing panels onto the joiner and up to the fuselage, threading the aileron pushrods through the pushrod connector barrel. The photo shows the left-hand wing panel being fitted; note that the leading edge is angled slightly downwards. When both wings are in place, locate the rotary latch on the underside, and turn it through 90° to hold the panels securely against the fuselage. Now immediately tighten the aileron pushrod clamping screw as described earlier.
Connect the servo leads to the receiver in the following sequence: speed controller to socket 1, aileron servo to socket 2, elevator servo to socket 3, rudder servo to socket 4, retractable power unit servo to socket 6. Caution: please refer to the diagram on the receiver itself to ensure that the leads are connected correctly: the brown or black wire should always be at the top of the receiver. The picture shows the receiver with all connections complete; it is installed across the bottom of the fuselage.
Control surface travels The control surface travels are set up correctly at the factory for around 100% servo travel. The deflections are as follows, measured in each case at the inboard trailing edge of the control surface: elevator approx. 12.5 mm up and down, ailerons approx. 15 mm up and 10 mm down. The photo shows the model with the retractable power unit extended, but not switched on. The aeroplane’s glide angle is steeper in this state, and this makes accurate spot-landings easier.
Please note that the G3.5 plugs and sockets must be disconnected after every motor run and after every flight. This is for safety reasons, and also protects the LiPo battery from damage. Even when the model is not in use, a small current flows whenever the G3.5 plugs and sockets are connected. In the long-term this could deep-discharge the LiPo battery, and cause irreparable damage to the pack.
Adhesives and replacement parts (not included) Cyano-acrylate adhesive* Cyano-acrylate activator* Ready-made fuselage, complete L.H. wing panel R.H. wing panel V-tail panels *Only necessary if repairs are required to the model Order No. 5821 Order No. 953.150 Order No. 9920.200 Order No. 9920.301 Order No. 9920.302 Order No. 9920.
Make sure that all passers-by and onlookers are aware of the hazards involved in the operation of your model. Remind spectators to keep a safe distance from the model. Always maintain a safe distance between your model and other people or objects. Never fly low over people or directly towards them. Radio-controlled models should only be flown in a temperature range of -5° to +35°C.
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/SJ GmbH, D-73230 Kirchheim/Teck, Germany, acknowledge the obligation to correct those defects within the limitations described below.
