HP calculation

Postby Sandra » Mon Apr 09, 2007 3:05 pm

Hello!
Is there anyone who knows how to calculate the power at the wheel on a rolling road?

I know how to calculate the power directly on the engine but it is the power on the wheel I am interested in. I have tried many different calculations but I always get too high values.
Sandra
 
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Location: Sweden

Postby Tony » Wed Apr 11, 2007 6:04 am

It is exactly the same as measuring engine power directly.

All you need to know is roller rpm, and the torque developed by the rollers. Wheel Hp = Roller torque in Ft/lb x roller rpm divided by 5,252
Also known as the infamous "Warpspeed" on some other Forums.
Tony
 
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