Wheel RPM...

[Conceptual]

Working with trying to adapt a kart frame into a microGP car. I want to use electric motors, but my question comes to what the wheel RPM is going to be. I havent looked into wheel sizes yet because I'm sure that it would effect the design because of the RPM.

If I was to direct drive the wheels with an electric motor, what is the ballpark RPM that the motor would have to be?

Thanks!

Chris

[Saribro]

RPM = Speed/Wheel circumference

As an example:
Speed = 60km/h ( = 1000m/min )
Wheel diameter = 35cm ( = 0.35m )
=> Wheel RPM = 1000/(Pi*0.35) = 910 RPM

[Chubbs]

i think your best chance is to look through google... i did a quick search and got these two which look pretty helpful...

http://www.electricmotors.machinedesign ... ee1_1.aspx

http://www.elec-toolbox.com/Formulas/Motor/mtrform.htm

[Conceptual]

Thanks!