pic: Finally Done!

[RoboChair]

Originally Posted by asid61

20fps is too fast. You can limit the top speed in software for the driver, but your acceleration will be very poor with only 4 cims. Seeing as you are running bevel gears, would it be possible to add a 3rd cim sticking stright up?

I would not say 20 fps is too fast.

1678 geared our drive for a theoretical 22/8fps high/low. We measured our top speed at about 18fps on our practice field. It was very fast and I will admit we ran a 6 CIM drive train. It should be said that each gear ratio should be tested under load to find it's ACTUAL output speed. But at this gearing and motor to speed ratio you are unlikely to hit the max potential of the CIMs, you will be accelerating for a large portion of if not all of the distance of the field. It takes us about 1/3rd of the field to get moving at full speed with 2 horsepower backing our drive train.