 WOT: mechanical engineering question |
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| TonyAKAVW |
 Oct 14 2004, 05:40 PM
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That's my ride.  Group: Members Posts: 2,151 Joined: 17-January 03 From: Redondo Beach, CA Member No.: 166 Region Association: None  |
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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| Carl |
Oct 14 2004, 06:26 PM
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#2
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Ummm ... what? Group: Members Posts: 781 Joined: 17-January 03 From: San Jose, CA Member No.: 163 Region Association: Northern California |
Other approaches would be to use a chain & sprocket or a serpentine belt. Is your tower for a low band array or VHF/UHF? A low band array would have a lot of wind loading and leverage.
C |
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Posts in this topic
TonyAKAVW WOT: mechanical engineering question Oct 14 2004, 05:40 PM
john rogers If I remember my naval engineering correctly about... Oct 14 2004, 05:55 PM TonyAKAVW Well, lets say there is one turn on the large drum... Oct 14 2004, 06:07 PM TimT Lots of variables in this one
tension on the tail... Oct 14 2004, 06:12 PM TonyAKAVW Thanks! I'll do some searching with those... Oct 14 2004, 06:18 PM MattR ugh, i just signed on to take a break from my stat... Oct 14 2004, 06:50 PM TonyAKAVW Actually this is for adjusting the elevation angle... Oct 14 2004, 07:17 PM F4i You could use coged belts. Like the kind used for ... Oct 14 2004, 09:06 PM groot Is this for home use? If so, I think I'd make ... Oct 15 2004, 06:03 AM
TonyAKAVW Its sort of for home use. Its more for mountainto... Oct 15 2004, 12:30 PM |
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