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1992 Ski-Doo Twin Track Racer

Model – 1/3rd Scale, 1992 Ski-doo Twin Track Ice Racer
Engine – O.S.Max SE.21car [.21c.i.-3.5cc]
Pipe – Mac 21 boat pipe [large]
Clutch – Thorpe Variable Belt
Brakes – Floating Aluminum Rotor & Cam Action Caliper
Chassis – Aluminum Sheet Tunnels and front bulkhead
Dimensions
            Overall Length – 36”
            Overall Width – 15 ½”
            Overall Height – 11 ¾”
            Overall Weight – 6.75 kg
            Ski c-c Stance – 14 ¼”
            Track Width – 2 x 2 ½” studded
            Track Length – 40”

Front Suspension –
I.F.S. unequal Length Arms, Rocker-Arms, Adjustable Sway Bar, Rack Steering, Handmade replica aluminum spindles.
Travel – 2”
Front Shocks – Coil Over, Oil Filled Adjustable, Preload & Dampening
Rear Suspension –
Inboard oil filled coil-over Shocks, AL. Skid with UHMW Hyfax and lube jets, blade stackable sway bar
Travel – 1 ¾”
Rear Shocks – Coil Over, Filled Adjustable, Preload & Dampening

Body – Two Piece Fiberglass, fresh-air intake, wing design deck
Radio System
            Servos – High Torque ¼ scale steering servo with servo saver, JR throttle and brakes
Rider – Sponge foam & wire armature, “balsa-head”, scale Camoplast suite, goves, boots, goggles.
Tach – “check” works off the throttle control with a tiny cable, also tail-light, switch and light

This is the first scale model, “true in scale” to an actual racing snowmobile that I built.  Having measured the full size race sled, I made this scaled down version.  The performance is amazing, even today compared to our 1/8th race cars for excitement!...[well almost].