[sanddrag]

Somebody's signature says "Build first, ask questions later" I completely agree with this. Sure you could calculate all that stuff and come up with the winning combination but why bother. Just make something that looks right and it will probably work fine. If not, modify it. More speed, bigger tires. More torque, smaller tires. More traction, wider tires. It's far easier to just make it and fix problems rather than calculate it all first. There are real-world factors and problems that no amount of calculations could ever forsee.

I hate calculations.

Hope this helped but I know it probably didn't.