Y'know, I've always wondered why one would have to use a lubricant
which would even come close to thickening anywhere near that much
with the minch motors we have to use for our towers. There's certainly
NO high-speed problem, and virtually no wear problem either.
It would seem that one could use a good quality all-temp motor oil
and still obtain more than adequate lubrication/protection, etc. from
In fact, seems I discussed this with Bruce Kopitar at US Tower maybe
6 years ago, and I beilieve that he acknowledged that this was, in
truth, the case.
Any comments from anyone?
73 - Tom Hammond N0SS
>We had a situation with a customer with three motor driven overhead dock
>doors large enough for semi trailers to back in. When we first put them
>up everything worked OK for more than a couple of years. As time went by,
>the same problem you have would occur occasionally in colder weather, the
>motors would not come up off of the starter winding/capacitor switch and
>would also blow the fuse. The gear box/reducer oil must get real stiff at
>low temps and the 1/2 HP motor just couldn't get up to speed. We wrapped
>them in thermostatically controlled heat tape and some insulating
>blankets, never had problems with them since then. You have the luxury of
>being able to work on the drive at ground level, I think it's "solvable".
>Nate, W3SVJ in Pittsburgh, where it's not that cold, yet!
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