Alt-BEAM Archive
Message #09118
To: beam@sgiblab.sgi.com
From: Bob Shannon bshannon@tiac.net
Date: Wed, 12 Jan 2000 22:54:10 -0500
Subject: Re: Pager Motors (Was RE: parts source)
> Dave Hrynkiw wrote:
>
> > At 05:52 PM 1/11/00 , Bob Shannon wrote:
> > >So when we speak about efficient motors, and 'more efficient', we
really
> > >should
> > >be a bit more specific. When I described the Mabucci FF-K10WA as being
> > >'more efficienct' than a pager motor, I was really describing the
> > >application as much as the motors themselves.
> >
> > Perhaps "more applicable"?
> >
>
> If we are talking about moving the most mass with the least energy, or
moving
>
> a fixed mass over a distance in minimum time, 'more efficient' works for
me.
>
> As most BEAM 'vores keep starting and stopping, a small change in the
startup
>
> of the motor (a lower speed, higher torque motor, or gear reduction) can
make
>
> a big difference in overall performance, often in hard to predict ways
like
> when adding gear reduction. This adds friction, yet often increases
> overall efficiency.
>
>
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