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...
Mike N6IMF
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