[modeleng] Re: Electric Motors

Conversing with those involved in the design of such motors in the past, I
was told that a lot of the cheap tools are only designed with a working
life of 40 hours in mind before the effect of heat on the motor coils
(which are deliberately underdesigned from the point of view of thickness
of copper wire and insulation coating to reduce costs) causes them to
fail.

As such I've always steered well clear of them for a model which you might
have to totally rebuild 5 years down the line because you can't get a
direct replacement for the short lived motor.


Yours,


Rich.


On Mon, 27 Sep 2004, alanjstepney wrote:

> ...
> The ones I am watching, is the motors used in some of the re-chargeable
> tools.
> With the range now including mowers, chainsaws, hedge trimmers etc, and the
> drills increasing in power, the motors used are quite powerful. As they are
> scrapped, perhaps due to dead batteries, or general mechanical faults, the
> remnants might be worth a close look to see what use they can be put to.
>
> alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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