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Author Topic: Motor change  (Read 2541 times)

Phill

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Motor change
« on: May 30, 2016, 19:34:45 »
Hi,

I currently run a pair of Longs Motor Nema 23s. They are solid but for driving my scope they are a bit slow.

The spec is

RA 1:144 worm 1:12.5 RS gearbox.

1.8 degree
8V 
18mH
1 amp per phase
18 ohm coil resistance.

Running these at 12 volts is fine, but I can only manage about X80 for the goto.

I've looked about and there are quite a few NEMA 14/17s available:

0.9 degree
4V
4mH
1.33A per phase.

Has anyone experience of these or a recommendation.

Thanks

Phill
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Phill

Phill

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Re: Motor change
« Reply #1 on: June 01, 2016, 08:06:40 »
Also, is anyone using 5:1 planetary gearboxes on their steppers? Any observations?

 :D
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Phill

Phill

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Re: Motor change
« Reply #2 on: September 17, 2016, 11:39:18 »
Finally got round to finishing everything.

Ran for three hours last night tracking Saturn and was unable to detect any drift using an illuminated eyepiece. The only limitations I have now are due to my very old EQ3-2 mount. Although everything runs stone cold the axes are just too stiff and clunky. I need a lottery win and a new eq mount.

Phill
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Phill