Monday, January 21, 2008

Shaft coupling

The surplus 1/4" shaft coupling works perfectly on the slow motion control shaft of the TG-SP II, of course, it's too big for the small geared motors.

So now I've two choices:

1. buy another small shaft coupling with 3mm bore and with OD ~ 1/4 inch OR

2. buy another set of geared motors with ~ 1/4 inch shaft

I guess I prefer (2) since the small motors which I got now could be a bit too fast (5 RPM at 6V) and maybe too small to deliver enough torque. And these smaller motors can be left for other projects like motorizing different focusers.

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