http://groups.yahoo.com/group/GrizHFMinimill/photos/album/2130350934/pic/list
or view a video at:
http://www.youtube.com/user/grimmrlg?feature=mhee#p/a/u/0/_Cy-zF6R6cI
I found a 24 volt at 2 amps gearmotor with 144 RPM and 6 in/lbs of torque. I checked for more of the same motor but it appears this was a one time only item.
I'm sure a similar motor combo can be found, but I'd be wary of any 24v motor that isn't drawing at least 1 amp or it probably won't have enough power, its sometimes hard to find torque specs on ebay listings, luckily the one I got had a link to the spec sheets. I also would not recommend torque less than about 4 in/lb or RPM under 120.
http://www.ebay.com/itm/130556417718?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 This is the motor speed controller
http://www.ebay.com/itm/200674705469?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 This is the 24v gearmotor
http://www.ebay.com/itm/370524958531?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 This is the 24v power supply
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