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Forum: Motors & their mountings Fri 26 February 2010, 09:34
Replies: 47
Views: 76,309
Posted By Gerald D
Francis, a very common misconception is that the...

Francis, a very common misconception is that the published holding torque of a motor is the important criteria for a router.

The important torque is the one at higher speeds, when the machine is...
Forum: Motors & their mountings Fri 12 October 2007, 01:44
Replies: 47
Views: 76,309
Posted By Gerald D
I have remembered why I am happy to tell everyone...

I have remembered why I am happy to tell everyone that unipolar (half-coil) is the way to go . . . . .

1. The nature of the load with CNC routing is generally that we need high torque when...
Forum: Motors & their mountings Thu 11 October 2007, 23:33
Replies: 47
Views: 76,309
Posted By Gerald D
Dirk, is there any other downside to bipolar...

Dirk, is there any other downside to bipolar parallel, aside from heat and big power supplies? "Roughness"?
Forum: Motors & their mountings Thu 11 October 2007, 07:19
Replies: 47
Views: 76,309
Posted By Gerald D
Mike, for that MotionKing motor, I would still go...

Mike, for that MotionKing motor, I would still go for the Unipolar, even though it has 8 wires. Still 56V but on a 600 Watt supply. Can't remember now why I favour unipolar over parallel . . . .
Forum: Motors & their mountings Thu 11 October 2007, 07:00
Replies: 47
Views: 76,309
Posted By Gerald D
Ouch, that is the second time the two model...

Ouch, that is the second time the two model numbers made me think they were different electrically! Of course they are the same motor. And Dirk also said to use the unipolar configuration. So, the...
Forum: Motors & their mountings Thu 11 October 2007, 06:10
Replies: 47
Views: 76,309
Posted By Gerald D
For the currently recommended motor (....A2A), it...

For the currently recommended motor (....A2A), it says the ratings are "per phase" but these are 6-wire motors, and the part number changes to B2A for a Unipolar connection. We can only use 4 of the...
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