Alt-BEAM Archive
Message #04901
To: beam@sgiblab.sgi.com
From: JVernonM@aol.com
Date: Sun, 27 Jun 1999 05:32:15 EDT
Subject: [alt-beam] Re: Photopopper problems
Bruce,
Everything you say is true. You only forgot one thing. Friction. The shaft of
the pager motor must be pressed with sufficient force to turn the wheel
without a lot of slippage. This requires the motor to lose torque through the
application of lateral friction on the shaft. When the bot rides on the tip
of the motor all of the torque is transferred into movement if a good
friction coating is used. The ride on the tip method uses a very small
surface area of the tip, allowing for much less torque being wasted on shaft
to wheel pressure.
Jim
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