Hello,

I've read through everything I could find on rear diff setups, however, most
have been using motors with low RPM capabilities, along with being quite
dated (2008).

The following are the current specifications for my project:

*Motor*
Max. RPM: 10000
Peak power (kW): 170
Peak power (Nm): 250

*Rear Diff IRS*
Ratio: 3.27

The motor efficiency is at the higher end of its performance curve.

That being said, if the vehicle is traveling approximately 80 MPH and the
wheel is spinning at 3000 RPM with 28.7" tires, where does that leave the
motor's RPM? Would it be the wheel RPM /multiplied /by the diff ratio? 3000
* 3.27 = 9810 RPM? Or would it be the wheel RPM /divided /by the diff ratio?
3000 / 3.27 = 917 RPM

I'm trying to verify where my motor's RPM would reside along its respective
curve.

Thank you in advance,
Forrest Walker Whitmore




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