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#30
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CIM gearbox using the stock molded plastic housing
It is possible to use the molded plastic gearbox housing provided in the kit in conjunction with the CIM motor as an alternative to the drill motor. If you use a 10 pitch, 30 tooth worm gear (Boston Gear pn G1061ARH), combined with a 1.25" pd worm (pn. G1066KRH :see bostongear.com for specs), you get a 1/30 ratio gearbox that should work well. You need to slide the pillow blocks that hold the motor-side drive shaft out a bit to compensate for the larger diameter worm gear. We are planning to do this for our front wheels.
See the image below. Drawings are also online at: http://skene.org/robots/cim.htm (img)http://skene.org/robots/CIM-gearbox-2a.jpg(/img) ![]() |
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