Monday, May 29, 2017

Racer project

My first 2WS bike proved to me that the concept worked at low speed, but high speed behavior on the track was unknown. My first 2WS racer proved to me that the concept worked at high speed on the track, but not at a competitive level. That leads to 2 options:
  1. Give up and find other things to do. There are Other Things. 
  2. Design and build a competitive club racer. Not doing it would be a waste of opportunity. 
Yes, there are Other Things, but none of them keep me alive. What really makes me feel alive is finding out how fast a lot of creativity can get me around the track. Parts are accumulating to make this happen:
  • 17 x 3.5" wheels with split hub center steering at both ends. If I can steer the rear wheel, I can drive the front wheel. An overrunning clutch to the front wheel will eliminate the need for a differential. Initially, entirely machined wheels were planned, but previous generation R1 front wheels are ideal - they are very light for a production wheel, and the hub area is big enough to bore out and install a smaller universal joint in the center with a lighter machined hub. A cheap damaged wheel verified that it will work.
  • 500 single 2-stroke power, with a combination counterbalancer/intake valve (My design), and a 6 speed transmission with a dry clutch. A KX500 engine (On hand) will provide most of the mechanical parts, a Ducati 999 engine (On hand) will provide most of the transmission and clutch parts (Similar to the Tul-Aris set-up), and a foundry (Not on hand - yet) will provide the cases necessary to make it all work. That will be a lot of work, but it should make a lot of power for a very small engine, with much less maintenance, tuning work, exhaust fabrication, and cost than a multi-cylinder engine. 
  • Very narrow triangulated steel tube chassis. Exotic construction techniques were studied with a lot of enthusiasm, but none of them had any practical appeal. The ergonomics of the first racer were excellent, as viewed from the side, but the hands, knees, and feet need to move a LOT closer together to improve safety and aerodynamics. 

When? Not soon enough....