[TowerTalk] tower and rotor parts

[Steve]

The Gear drives are double reduction with a small worm gear driving a larger
worm gear. They are rated at 1/4 hp input. The input shaft is 1/2 inch with a
key and the output is 1 inch with a key. The input is opposite the output.
They are approximately 10 inches by 10 inches by 8 inches high including the
input and output shafts. The main body is about 5 inches high with 4 cast
bosses that take 3/8 inch bolts. I plan to use some  with a flex coupler
direct to a 550 rpm motor. They weigh approximately. 30 pounds without the
original motor. The original set up was with a chain drive from the motor to
the gear box so you could use a higher speed AC motor with a smaller gear on
the motor to drop the speed down. The chain looks like number 35 pitch chain.
The gear box fits into a 18 inch face tower quite nicely and I imagine it
would fit a 12 inch tower but I don't think the antenna you would turn with
this gear box you would want on a 12" face tower. I will try to get a digital
photo to show the gear box but I hope this is enough info.

73 Steve VE3TU

"Ken Eckel Jr." wrote:

> Steve,
>
> I am looking for some reduction drives.  I would like a description of the
> ones that you have.
> A picture would be great.  How large? weight? etc.
>
> 73,
> Ken AB5A


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