The design consists of a frame (fuselage), middle and rear suspension hangers and pylon-engine mounts.
The fuselage is made of aluminium tube Ø 14 mm, which cut the grooves for the pylon and suspension. Front and rear in a tube crammed stub-fairings made of beech.
Front and rear suspension are made from D16T sheet thickness of 2 mm, skating—aluminum corner. Swing system relative to the fuselage is due to the introduced into the cavity of the tube brass rollers.
Fig. 3. Pre-launch installation of the model on the ice.
Fig. 4. Assembly of the model.
Engine mount (D16T sheet with a thickness of 5 mm) is designed integrally formed with the pylon attached to the fuselage with three screws M2,5. Installed on it the engine and fuel tank close the fairing from foam, covered with fiberglass and impregnated with epoxy resin.
Fuel tank — a common type of “drinker” allows you to maintain a constant engine mode throughout the race. And the use of the single-vane air propeller simplifies selection and fabrication, compensates for inaccuracies of adjustment of the engine and increases the average speed on the course in comparison with the usual screw 7.5% (Fig. 2).
For beginners this model is good because it is possible to participate in competitions not only in winter but in summer. Enough instead of skates on the suspension to set axle with wheels (Fig. 4).
Are you going to go for the first start, rookie? We give you the idea and the drawings! Build a snowmobile and make your own gift to the first exit on the track.
N. KOMAROV, master of sports of the USSR
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