Previously I had been working on a Losmandy Titan conversion. This project never finished because my original motors (nema 17) were too weak. And after all the mount is "working" as is with the gemini II controller and it is my live mount and installed 100 miles away in the observatory.
Anyway, recently I made a trade for the mount in the attached pictures. It has a 15" 359 tooth worm wheel on RA and a 9.7 221 tooth worm wheel on the DEC.
Im working on using my previously purchased NEMA 23 motors.
https://www.pololu.com/product/1478They are 2.8A per phase @ 3.2V nema 23 @ 270 Oz-In
These will have to be current limited, and the torque will suffer as noted by Tom in the Losmandy Titan conversion thread.
So Tom, my question is as follows. Im going to mechanically get the NEMA 23 motors working for fit and gear mesh etc. then I have two options (three really)
1. Use those current limited motors and hope they perform.
2. Get these motors:
https://www.pololu.com/product/1472 (Also NEMA 23 but 1A coils at a higher voltage rating of 7.4) They are also rated at 125 OZ-in. instead of the 270 on the above.
Tom, based on your experience do you think the 1A 7.4V motor will perform better as it is in spec of the drivers? Or do you think the current limited 2.8A 3.2V motor will work better?
3. The last option is what I was really planning until I saw the 1A motor. Get whatever spec NEMA 23 motor I need, and they are available way more powerful than either of the above, and use external DIR/STEP drivers but still use the Astro EQ to drive them.
Thanks!