[TowerTalk] Recommendations for an electric foldover winch?

[Richard (Rick) Karlquist]

On 7/31/2014 2:35 PM, Ralph Bolt via TowerTalk wrote:
> To: Fredric Serota <fserota at msn.com>
> Cc: towertalk reflector <towertalk at contesting.com>
> Subject: Re: [TowerTalk] Recommendations for an electric foldover
>      winch?
>
> I use this gear motor on a home-brew frame to raise my Texas Tower TMM 541.  It's slow but effective.  I simply put a chain sprocket on the motor and on the Fulton crank handle, built a frame to attach it to the tower and it works fine.  RPM is ten with 500 inch-pounds of torque.  The motor is 110AC and is reversible.
>
> At the website, see gear motor VW100 and I used the model with a 162 gear ratio, 4-pole
>
> Google for chains and sprockets or email me and I'll dig up a reference..
>
> http://www.vonweise.com/ProductsVW.PDF
>
> Ralph, K0HML

This seems like a very tiny gearbox to be claiming 500 inch pounds of
torque.  The shaft is only 3/16" which is another bad sign.  Would
you tighten a 10-32 bolt to 40 ft pounds?  Did you get additional
mechanical advantage by using different size sprockets?

BTW, slow is good, so your winch doesn't overheat.

Rick N6RK