I need to know two things, both just generally: 1. APPROXIMATELY how
much torque will be required from a motor for my application, and 2. a
general recommendation/website where I can get such a motor.

1. APPROXIMATELY (just in the ballpark, I don't have exact numbers)
how much torque will be required:

I am attaching a 1.13 inch diameter disk to the drive shaft of the
motor, and this disk will be turning (via friction and a rubber
surface, not gear teeth) an adjacent larger cylinder of 2.7 inch
diameter. The cylinder needs to rotate at ~24rpm, so the drive shaft
should rotate at 60 rpm.

Both the shaft and the cylinder are pointed vertically. The load is
attached to the top of the larger cylinder, and the motor will simply
be spinning it, NOT lifting it. The load is between 5 and 10 pounds.
The load is rubbing metal against metal on the bottom surface, and
there is a decent amount of friction which must be considered.

Ballpark figure on how much torque will be required to spin the load?

2. A motor recommendation/website. The only requirements are:
-standard AC power motor
-has the needed torque running at 60 rpm
-is relatively small (think 6 inches or shorter)

Prior research: I believe we bought a motor like the 105 or 107 model
at the very bottom of this website (I believe it is a 107 but ours
takes 2.3W not 1.5W as listed here), and it is NOT strong enough:
http://www.cramer-motors.com/magnet.html

Website/recommendation for an appropriate motor?

Again, I just need a general ballpark figure for torque, and a general
recommendation, I will do follow-up research to verify myself.

Please answer by Tuesday, thank you so much!

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Clarification of Question by mechanicalsteve-ga on 04 Sep 2005 22:38 PDT

The most important thing is the timeframe (needed by Tuesday) and the
torque estimate. Not a big deal if you can't give a great rec on the
motor... but I need an answer soon...

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Clarification of Question by mechanicalsteve-ga on 04 Sep 2005 22:39 PDT

So the clarification is: I'm willing to just take a torque estimate if
that's all you've got, and the price is up to $20.00. Need help by
Tuesday!!

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Request for Question Clarification by hedgie-ga on 14 Sep 2005 00:33 PDT

Considering that we (collectively) missed the plea for help by 4th,
(sorry about that)
do you still need an answer?

Hedgie

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Clarification of Question by mechanicalsteve-ga on 14 Sep 2005 06:06 PDT

Thanks for asking; no I no longer need an answer, I rigged up a rough
experiment to actually measure the force and calculate from there.

I will try to give me lead time for any future questions.