Steering Trials: Triangle versus Rack and Pinion

We were able to get out and test the two steering systems Jason has been designing: one with a "Pitman Triangle" as we call (like most go-karts and many four-wheelers), and the other using a junior dragster rack and pinion box. We predicted that the triangle would steer much quicker, which is not necessarily what we are looking for when running a 1.6 mile oval track. Stability is key, and the rack and pinion we suspected may give us an edge.

We modified the prototype frame (the tank) so that we could use both systems, and did some light experimentation with the two (the weather was cooperating back then). Rusty, our driver, confirmed our predictions that the rack and pinion steered slower and smoother. Our concern, however, was that it did not steer quickly enough to be able to maneuver through the slalom section of the steering test. A couple trips around the shop floor at Central Roller, however proved it to be enough. An official steering and tip test is soon to follow now that the snow is melting.

The Pitman Triangle setup

The Rack and Pinion setup

No winter coats back then!