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Re: Turning giant turntables
We're using a turntable this year, it's powered by a 1/4" thick laser-cut ABS ring gear and pinion on a PG71. Cost all of $15 for laser time plus material. We used Inventor's design tools to get the tooth profiles, and added mounting holes as well.
Previous years we have tried reversed timing belts, flat urethane belts, friction drives but this seems the best.
Hasn't been to competition yet, but worked well during testing.
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"There is no problem so bad that you can’t make it worse." - via Chris Hadfield
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I'd love to see a simple, robust system that connects quickly and dependably. - Andy Baker [more] 
03-03-2015, 09:42
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