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Re: Gearing for 20 FPS?
If you open up the question to bots that are geared fps free speed, it's not terribly uncommon. Our 2011 comp bot had a free speed of 20.6 fps, and our 2011 prototype Emperor Swerve was geared for 20.7 fps.
Frictional losses obviously bring these numbers down.
Both these robots have shifting to provide a low gear, and our comp bot was somewhat underweight and had very little friction in drive.
Using the oldschool version of JVN's design calc with the drive modeling tab allows you to graph the position and it's derivatives over time, and study what changing mass, friction, power, gear ratio, etc... has on them. It's very interesting how a *slight* friction difference can change speed appreciably.
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