[TowerTalk] Heavy Duty Rotor

[Jim Lux]

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.