Riggen Poly

Riggenho polycarbonate chassis prototype

I designed this chassis as an attempt to utilize the most high tech materials combined with proven principles of slot car chassis design.

The use of brass is intentional as it provides the best weight to strength ratio, especially when used for a slot car chassis platform, keeping all the mass as low as possible. The front and rear poly carb pieces are super light and super strong. They are easily machined to exacting tolerances. The pin tube shaker adds useful low weight while permitting the lightest plastic body.

The rear axle holder is made up of two peices sandwiched together and designed to accomodate brass bearings. The design also allows for a quick change rear wheel and gear set as all one needs to do is replace the entire assembly between the upper and lower halves of the plastic holder. The holder is fitted to the chassis with two mini titanium screws.

The front piece is also in two pieces and features a drop arm flag which also permits limited lateral float.
Lateral float is restricted by the tension of the lead wires. The axle fits through the two plastic pieces which are also attached with two mini titanium screws.

The electrical system mimics Ed Bianchi's slide guide with a direct connection from track rail to motor brushes.

The guide pin is also a titanium screw which allows infinite adjustmnent.

The motor is a stock product and the chassis can accomodate almost any typical can motor. The rear wheels and tires (Wizzard LAW's shown here) can be any that fit on the stock .061 axle and the front wheels are RiggenHO brass fitted with O rings.

            
1st prototype (above) was deisgned with a Carbon Fiber chassis and shaker. The CF proved to be too light and too flexible to hold the motor securely. 2nd design allowed the lead wires to go through the front chassis holder and added lateral movement.

This image shows the two axle holders loosely secured to brass bottom chassis piece. Rear section shows the brass bearings fitted in between the two plastic sections. Front section shown here highlights the drop arm guide flag and the adjustable guide pin. Holes in guide flag are for threading "slide guide" style lead wires.

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