I was thinking about that traction issue, and wondered if running a flat crank wouldn't be to your advantage? Honda won several world motorcycle GP championships by stagger firing a V3 2-stroke to get uneven torque input events to the drive wheel. On the really slippery tracks they had the option of firing all 3 cylinders together! They also learned that you need to fire like a Harley, if you want to beat a Harley coming off the turns on dirt tracks.
Big traction improvement, there. I think they already make these cranks/cam setups for Sprint cars....something like 2 cylinders together, then 2 in a row, then a different 2 together, then 2 in a row....kind of like a weird 6 pattern.
Interesting project...fun to read about and thanks!!
JimL