Alt-BEAM Archive
Message #03341
To: beam@corp.sgi.com
From: John Leo Zimmer jlz@novia.net
Date: Tue, 18 May 1999 07:47:33 -0500
Subject: [alt-beam] Re: gear box(home-made)
At 10:53 18 05 99 +0200, van Zoelen, Bram SSI-TSEA-352 wrote:
>How to determine gear ratio
>
>You can use two approached
>1 - using the diameter
>2 - using the number of tooths.
>
third method (for mathematically impaired).
3 - counting revolutions directly.
with the two gears meshing and free to turn
use a felt tip to mark the tooth on one gear
and the corresponding valley it's meshed with.
Then rotate the smaller gear counting the number of turns
until the marks again match.
If the ratio is 1:n it's a no brainer.
Sometimes it will take more than one turn of the larger gear
for the marks to match exactly. In that case count revloutions
of the smaller until they do to end up with 2:5 or some other
ratio.
I've always wanted to be NORMAL,
but lately I've had a strong suspicion that this is it.
J Skinner
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