Re: Flywheel batteries as EV power source

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Article #15772

#15772

From: Jon D. Rodder
Date: Fri, 18 Dec 1992 01:26

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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        / 
      \________67 Camaro RS - 350/4spd________/

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Message-ID: <1992Dec18.012654.26238@ra.oc.com>

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References: <1992Dec15.194558.2556@adobe.com> <1992Dec16.192456.6261@news.cs.brandeis.edu> <1992Dec17.011649.987@cmkrnl.com>

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Newsgroups: sci.electronics,sci.energy,rec.autos.tech
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!eff!news.oc.com!usenet
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
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