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Re: [TowerTalk] Heavy Duty Rotor

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Heavy Duty Rotor
From: Jim Lux <jimlux@earthlink.net>
Date: Wed, 07 Sep 2011 06:04:03 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 9/7/11 4:44 AM, GALE STEWARD wrote:
> A bunch of years ago a VE3 wrote up an article for CQ Magazine describing the 
> construction of an antenna rotator using 1/3 HP reversable motor and a 
> right-angle worm gear drive gearbox made by Boston Gear and a couple of chain 
> drives. As I recall, the motor/gearbox was outboard of the tower and used a 
> chain drive to turn the mast. It was a pretty slick setup and I kept the 
> article in my files. I thought of actually building something similar at some 
> point but so far I'm still doing well with a prop pitch.
>

Precisely..  There's a fairly limited need for big rotors, and for the 
mean time, the supply of prop pitch motors is probably sufficient.  It's 
a market like big engines for unlimited hydro boats and air races, war 
surplus V12s worked for a very long time.

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