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Veselin,
I'm curious as to what pitch gears you're using in your assemblies. We used 20DP gears, except for a 0.7M gear that mated with the drill motor pinion. I don't really have a reference point, but it looks like you're using 24DP or smaller gears. Looks nice Veselin. I'm looking forward to seeing it at events

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Gear reduction for the CIMs is 20 pitch, and for the drills its all .7 mod. Boy what a pain it was to get those gears!!! Yea... mostly aluminum, except for the shaft the whole thing rests on.. thats steel. Gears too...
So yea, its a really nasty, but cool, design. We're geared to go about 10 ft/s, so we're fairly fast. The machining was really crazy though. As I said, the wheels are made of solid blocks of aluminum. Most of the parts needed to be CNCed. So, see you all at the competitions.
Any more questions, I practically live here.