Motor, Speed, Torque calculation spreadsheet

Friends:

Does anyone have a spreadsheet where I can input some of the DC motor parameters such as RPM, gear ratio, and tire diameter to calculate things like speed etc. Torque conversions would be nice too.

If you have it, please post it or e-mail it to me ok?

Thanks,

Migs

I made this Javascript calculator for calculating Vehicle Speed, RPM, and Wheel Diameter. Maybe it will be helpful?

lynxmotion.com/images/html/wheelspd.htm

Thanks sweet Beth! -Migs

(You know one thing you could add there would be to input the gearbox ratio ex: 50:1 and have it calculate the rest.)