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Hi Mick. I dont actually know how much torque is involved. But the little stepper off an EQ5 mount drove it no problems. Considering It is designed to push around a 150mm F/8 refractor around which weighs in at what...17-20 lbs? {plus counter weights etc} It pushed my 160lb OTA/counter weight assembly. Put it this way, with one finger it is EASIER to push the big scope than it is to push the refractor on the EQ5.. This is due to the big diameter bearing I have on the RA shaft. Your box of steppers sounds promising.
Do you know about controllers etc? As stated, it needs to do 1 RPM. I'm definately interested in what you have to say, Thanks.
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