Alt-BEAM Archive
Message #09113
To: beam@sgiblab.sgi.com
From: Bob Shannon bshannon@tiac.net
Date: Wed, 12 Jan 2000 22:31:08 -0500
Subject: [alt-beam] Re: Pager Motors (Was 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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