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Old 02-08-2009, 10:27 PM   #2 (permalink)
MetroMPG
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Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Metro
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90 day: 67.07 mpg (US)

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The EVDL guys have chewed over this before, and the biggest obstacle is that when you go back into PWM mode from Contactor/Turbo mode, you can fry the controller.

There will be back EMF (... if I'm not mistaken ...) in the motor for a short while which will feed back to the controller at a level higher than its rated to handle.
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