Quote:
Originally Posted by AdamHeard
With no chain reduction, the kit gearbox will get about 10.5 fps on 6" wheels. That's probably geared too high to be useful, it is also most likely not traction limited.
I would recommend the KOP gearbox with an additional 3:4 reduction in sprockets. That will put you at 8 fps, which is pretty good for a single speed robot.
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The theoretical maximum speed of the robot using the kit gearbox, 6" wheels, and the free speed of the CIM motors is around 10.5 ft/s. But when looking at these values you need to look at more real world speeds out of the gearbox take the normal speed of the CIM motors or make some rough estimations of the inefficiencies of the drive system.
So for a robot with the kit gearbox direct driven to 6" wheels I would expect the maximum speed to be closer to 8 ft/s in real world situations. So when doing rough calculations for drive systems taking the theoretical maximum speed (with motors at free speed) isn't all that useful, I would recommend either direct driving the 6" wheels or sprocketing it down by just a little but not 3:4 (which would be closer to 6 ft/s if you did).