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Path: utzoo!watmath!wateng!ksbszabo
From: ksbszabo@wateng.UUCP (Kevin Szabo)
Newsgroups: net.space
Subject: Re: More of same (electric motors and low end torque)
Message-ID: <1316@wateng.UUCP>
Date: Tue, 14-Aug-84 01:53:18 EDT
Article-I.D.: wateng.1316
Posted: Tue Aug 14 01:53:18 1984
Date-Received: Tue, 14-Aug-84 04:55:50 EDT
References: <12324@sri-arpa.UUCP>
Organization: VLSI Group, U of Waterloo
Lines: 18

	....I wonder when the low end torque problem will be addressed...

Low end torque is one thing an electric motor should have lots of.
A series wound motor (like one in your electric drill) create highest
torque when stalled. An induction motor ( clocks, pumps, anything
that is basically A.C. only ) generate very little low end torque,
with maximum torque occurring at ~90% of no-load rpm's.

I remember an article in a Popular Science of a few year ago.
This fellow had an electric car with a gas turbine that recharged
the batteries whenever they needed it. One of the things that
impressed the reporter type the most was the LOUD screech, blue
smoke and the black left on the driveway when the inventor
pulled out..... (hopefully the blue smoke was not from the windings!).

			Kevin
-- 
	Kevin Szabo  watmath!wateng!ksbszabo (Elec Eng, U of Waterloo)