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Originally Posted by roboteer49
What kind of bearings do u use for the drive train?
I need to hav a bearing that can be inserted in the plate like S. Nickens
Also S. Nickens did u have to replace ur gearbox during competition, ive decided to use the gearbox in high with a 3.5:1 ratio w/ the chip
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We used 5/16 ID flange bearings the were press fit into the side plates held in place with retaining rings.
We didn't use the gearbox that came with the drill motors. We took out the motors, pressed off the gear and made a custom shaft to adapt to the sprocket shafts. We mounted the drill motor with a custom aluminium mount that also acted as a heat shield. Both motors were mounted to the inner sideplate. I have some AutoCad drawings if you're interested.
The drill motor runs approx. 20,000 rpm, with the reduction of the 32 tooth sprocket it runs 5500 rpm, equal to the chip.The drill runs a 9 to 32 and the chip runs a 9 to 9, so you you have two motors spining a single shaft that spins at 5500 rpm. From there you need to determine your estimated velocity and wheel dia. to determine your final reduction. There are some good white papers to help you figure this out. If I can help answer any more question, just ask.