Alt-BEAM Archive
Message #04898
To: beam@sgiblab.sgi.com
From: Steven Bolt sbolt@xs4all.nl
Date: Sun, 27 Jun 1999 08:52:02 +0200 (CEST)
Subject: [alt-beam] Re: Photopopper problems
On Sat, 26 Jun 1999, James Wilson wrote:
> Bruce one small correction, the diameter of the wheels used as idlers does
> matter the larger the wheel the greater torque and the smaller the step
> size.
No. Step size and torque do in no way depend on the wheel diameter,
because the motor shaft drives the *outside* of the wheel, which
`drives' the road; step size is equal to what you get with the
motor shaft *directly* on the road.
A larger wheel does however have the advantage of handeling uneven
terrain much better than the motor shaft or a small wheel. A good
sized rubber-tyred idler is a great performance-improver.
Best,
Steve
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# sbolt@xs4all.nl # Steven Bolt # popular science monthly KIJK #
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