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Old 04-18-2009, 04:34 PM   #11 (permalink)
Silveredwings
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Join Date: Dec 2007
Location: northeast
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Dark Horse - '16 Ford Mustang GT convertible Premium

Gutless Beauty - '19 Toyota Corolla SE
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Quote:
Originally Posted by Electric Frenzy View Post
Does anyone happen to know what kind of range, speed, top-end I could get if I went with an 11" motor, direct drive and 144-156v? Would that be a better way to get more performance and save on weight and complexity?
Max speed will be wherever your forward thrust equals drag and is vehicle and drive system determined. A bigger motor will give more thrust but requires more lead and more $. Lower drag is all gain, so smaller, lighter, sleeker, etc. is a big help.

Max range is the ratio of kilowatts-hours of usable battery you have on board to average watt-hours each mile consumes.

If you burn 100 Watts / mile and you have 5KW to use, then you'll average 50 miles. Watts/mile is mostly a matter of vehicle drag and drive system efficiency. Usable battery is limited by how deeply you want to discharge the batteries. The depth of discharge affects battery life.

So many choices.

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