Thread: Matching Drill and Chiaphua
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Unread 08-01-2003, 00:37
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Re: Matching Drill and Chiaphua
Quote:
Originally posted by sanddrag
Where on the torque/speed curves should you gear the motors to match RPM?
We have had good experience in trying to match the free speed RPMs.

So...

CIM free speed RPM = 5,500
Drill rpm = 20,000

ratio difference = 20,000/5,500

Then, try to buy the gears that fit this ratio. The key is finding gears which can be delivered quickly that have the right face width (3/8 is safe) and the right ratio. If the gears you can get are approximately the same ratio (+/- 10% of the ratio you calculate), then you should be OK.

Also, you need to allow efficiency losses as you run through your gear meshes. Usually, if your gears are smooth and mounted correctly, you need to figure 95-97% efficiency for each stage.

Andy B.
Last edited by Andy Baker : 08-01-2003 at 00:45.