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Unread 04-07-2003, 18:34
Andrew Andrew is offline
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Join Date: May 2002
Location: Little Rock, AR
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Joe,
Thanks for the info. I had seen in the drill motor GB that the number of teeth and (I think) the center distances did not match the theoretical values. I had always wondered about that.

Quote:
As to going to extremes to use the drill gearbox - I question that approach. The drill gearbox is not as efficient as a simple spur geartrain. It is pretty compact, though... I guess it depends on your objectives.
Ken,
One reason that we abandoned stages 2 and 3 of the drill motor GB was efficiency.

Why would we go with one planetary stage on the FP?
1. It's more expensive
2. It will take more time to machine the precision parts
3. It's less efficient
4. We're restricted to fewer options at gear ratio
5. It will require much more engineering time
6. It might not work at all

Umm...not looking good so far...

7. It will look so darn cool!