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- Newsgroups: sci.electronics,sci.energy,rec.autos.tech
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- From: rodder@ccwf.cc.utexas.edu (Jon D. Rodder)
- Subject: Re: Flywheel batteries as EV power source
- Message-ID: <1992Dec18.012654.26238@ra.oc.com>
- Sender: usenet@ra.oc.com
- Organization: The University of Texas at Austin, Austin TX
- References: <1992Dec15.194558.2556@adobe.com> <1992Dec16.192456.6261@news.cs.brandeis.edu> <1992Dec17.011649.987@cmkrnl.com>
- Date: Fri, 18 Dec 1992 01:26:54 GMT
- Lines: 21
-
- In article <1992Dec17.011649.987@cmkrnl.com> jeh@cmkrnl.com writes:
- >
- >Then we come to electric motors to drive the wheels. Electric motors have
- >wonderful torque/speed characteristics for vehicles (they generate maximum
- >torque just before stall speed, which may make transmissions and clutches
- >unnecessary) but lousy power density -- look at the size of a 1-hp. electric
- >motor sometime and tell me how big a motor would have to be to accelerate a
- >car fast enough to keep up with gasoline-powered ones.
- >
- >Internet: jeh@cmkrnl.com, hanrahan@eisner.decus.org, or jeh@crash.cts.com
-
- Well, lets see.. the 20hp permanent magnet motor in our solar powered car
- is about 6 inches in diameter and 6 inches long. It weighs under 20lbs.
- See the GM Impact for a production style example of a compact high power
- motor.
- --
- -=< Jon Lusky ----- rodder@ccwf.cc.utexas.edu >=--
- \ IRC-Op at tramp.cc.utexas.edu (Rodder) /
- \ 89 Jeep Wrangler - 258/for sale! /
- \ 79 Rx-7 - 12A/Holley 4bbl /
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