Starliner Mount

I've acquired an old starliner mount. The RA axis has a Hurst AC motor drive.

Does anyone still make a stand alone drive corrector for ac motors?

I'd even be interested in constructing one, provided components easily available (i.e. Radio Shack or equiv.), reasonably priced and "hobbyist level" complexity. AND THOROUGH INSTRUCTIONS.

All my web searches are coming up empty.

I don't even have the pier ready, so I'm just looking for general info at this time-unless there's something on the market now that I should get while still available.

Thanks

Thanks

There are two routes you can go. One is to design yourself and square wave oscillator using a NE-555 circuit and that can use an RC circuit to lock in the 555 then you would need suitable IC's to divide down the pulses to around 60 hz. From there you could use a Switching transistor to feed a pair of 2N 3055's from these these guy's you can feed an appropiate Transformer with planty of Iron in it to step the voltage to 120 +/- 5 volts and that is what you drive your AC motor with. Somewhere I have a complete circuit board that I desinged thirty years ago sitting in one of my Junk boxes. All those Synchronis motor circuits use the basic design I mentioned. DOAA, Orion and all the rest.


2nd better idea and safer too. See if you cannot get yourself a stepper motor to replace your synchronis one I know they still make them I see them around from time to time. Then you should be able to adapt a Vixen or Orion single axis control and use only a nine volt battery to run it all instead of using a 65 Amp hour deep cycle battery.

Those older Drive correctors where sure current hogs. And very dangerous esp when there is a lot of dew. In thinking about it I would not even mess with them go with my 2nd idea.

Clear Skies
Dwight L Bogan