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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