Try to buy some motors preassembled with gears used by robotics projects.
Some of them has a very large torque.

Something like these:

http://www.active-robots.com/products/motorsandwheels/gearhead-motors.shtml

Tamas


On 20/10/06, Gerhard Fiedler <lists@connectionbrazil.com> wrote:
>
> Pearce, AB (Alan) wrote:
>
> >>So I'm looking for a gear motor (or a gear + motor combo)
> >
> > Your local motor vehicle dealer scrap yard?
> >
> > A starter motor initially came to mind,
>
> I think they are too fast and too big. I'd need a gear, for which I don't
> yet have a cheap enough solution.
>
> > but a windscreen wiper motor would do.
>
> Something like this is what we're using now. The problem I'm seeing is
> that
> our torque requirements seem to be just a bit above what most wiper motors
> produce, so I probably have to try many of them until I find one -- if I
> find one.
>
> Anybody knows where to find datasheets of windshield wiper motors? What
> would get me started is stall torque and idle speed... Ideally a list of
> all the motors of one of those replacement parts manufacturers with that
> data :)
>
> Thanks,
> Gerhard
>
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