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> WOT: mechanical engineering question
TonyAKAVW
post Oct 14 2004, 05:40 PM
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I'm building a "roto-lok" system http://www.roto-lok.com/tech/technology.html

for the rotation of an antenna for amateur (ham) radio purposes.

I'm trying to find an equation that relates the radius of a pulley/drum to the total friction. Basically I want to make sure that I put sufficient turns of wire around the drive shaft so that it does not slip. I've been searching on the web and I can't even really find equations relating tension to friction, etc.

Any advice on where to look?

-Tony
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