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Old 05-13-2011, 05:09 PM   #515 (permalink)
MPaulHolmes
PaulH
 
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Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
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Oops, I never saw that message. I don't know if you could do that to a new beetle. Probably!

I did some force tests on the car today at 72v nominal...

18 mph constant speed in 1st gear on flat ground ----> 223 w*hr/mi
35 mph constant speed in 2nd gear on flat ground ----> 250 w*hr/mi

This is with the tires inflated to around 29-30 psi. That's better than I thought it would be!

The 1000amp controller monitors voltage, so I did the following:

batteryAmps = pwmDuty * motorAmps
Force = PackVoltage * batteryAmps / speedOfCar

This thread brings back the good old days. Oprah is ugly. hahaha
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