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[TowerTalk] Vacuum Variable Over Torque Protection?

Subject: [TowerTalk] Vacuum Variable Over Torque Protection?
From: Kim Elmore <>
Date: Sun, 14 Sep 2008 15:20:54 -0500
List-post: <">>
This may not be the best place to ask, but I'll give it a shot:

I have a vacuum variable capacitor that I use for a shunt-feed 
L-network at the base of my tower. I tune it using a reversible DC 
motor with a reduction drive. It works well and I only need to adjust 
it over a range of a couple of turns, but the motor I use develops a 
lot of torque. In fact, it's enough torque that I'm pretty sure it 
would strip the threads if I ever bottomed them out.

I don't have a remote turns counter and I'd like some kind of 
protection against such a condition. Do any of you have any good 
over-torque protection methods I could try?

Kim Elmore, N5OP


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