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Old 12-25-2008, 06:02 PM   #11 (permalink)
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Here's a Fiero that gets 75 miles and 75mph top speed @ 120volts on 20 batteries. Same motor as the 928, only in a much lighter frame.
Rob Neighbour's 1984 Fiero


Last edited by captainslug; 12-26-2008 at 04:28 AM..
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Old 12-25-2008, 10:18 PM   #12 (permalink)
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Assuming that Fiero has a 250 Amp hour battery capacity (generous estimate - couldn't find the specs on the battery type he listed), and he goes to 80% depth of discharge (not good for long life), he'd be consuming 342 Watt hours per mile (at the pack) to go 70 miles. That's doable, but at a fairly low speed.
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Old 12-26-2008, 12:26 AM   #13 (permalink)
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You may want to talk to the EVDL. 50 miles at 50-55 mph is doable. The general consensus is that 500 pounds of lead is roughly equivalent to a gallon of gasoline, so if you can average an equivalent of 50 mpg, 500 pounds of lead will get you 50 miles (at 100% DOD). Double that to get good battery life, and you're looking at about 1,000 pounds of lead.

Oh, and don't ditch the transmission. Yes, it will sap a bit of energy, but without it, you'll still have to have a differential or something to drive both wheels, and you'll want the gears to keep the motor in its powerband for efficiency.
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Old 12-27-2008, 11:56 AM   #14 (permalink)
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Quote:
Originally Posted by jjackstone View Post
Depends on your expense account.
Good luck.
JJ
Money pit and a half (exceeding weigh, top speed):
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