Mike,

I visited one HAM recently and he had a 6 foot wide dish antenna with
a very old hand-crank az/el rotator, that used worm gears.  I looked
over it for several minutes (in awe!) and was surprised at how
incredibly smooth / easy it was to crank.

Joseph Armbruster
KJ4JIO

On Mon, Feb 1, 2021 at 3:29 PM Mike Hoblinski <hobergenix@gmail.com> wrote:
>
> Thanks for all the feedback. I have seen them used a lot in small rotor projects with a DC motor.
> The ones used in the person's rotor build look fairly hefty and in some of his build threads he
> mentioned that they are waterproof and the gears have an oil encapsulated reservoir. I did some
> checking and each worm gear box costs about 40 dollars and up.
>
> Mike
> N6IMF
>
> On Sun, Jan 31, 2021 at 9:21 PM Ashhar Farhan <farhanbox@gmail.com> wrote:
>>
>> They do pretty well. We used them here with reversible AC motors that were ar overkill.
>>
>> On Mon 1 Feb, 2021, 8:29 AM Mike Hoblinski, <hobergenix@gmail.com> wrote:
>>>
>>> I was wondering how well would a worm gear assembly hold up for AZ and EL drives and what
>>> might be the drawbacks. I ran across one persons rotor project that uses worm gear boxes
>>> with Nema 21 stepper motors. The gear boxes themselves cost about 45 dollars each and
>>> appear to be quite rugged and waterproof.
>>>
>>> Github     https://github.com/YohanHadji/SuperAntennaz
>>> Youtube   https://www.youtube.com/watch?v=NuH7F1J6nr8
>>> Satnogs   https://community.libre.space/t/satnogs-all-metal-box-mountable-rotator/4927/24
>>>
>>> Mike
>>> N6IMF
>>>
>>>
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>
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available
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Not an AMSAT-NA member? Join now to support the amateur satellite program!

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