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Originally Posted by Travis Covington
What happens with RPM? If we were to match the free speed of the large and small CIM motors, how would I determine the RPM to use when calculating the gear reduction to give me the desired robot velocity. I am trying to estimate a true robot velocity but am getting confused with the varying RPM's under load.
Thanks so far though Paul!
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The quick answer is to use about 4300 from the smaller Cim, Friction keeps the drive trains from making free speed (5200 approx) the other quick method is to guess that you will make between 75 and 85 percent of the motors free speed if you don't have too much friction in your drive train. As you add parts to the drive line you get less, and you get more friction. Last method it to build it and measure it. Hope this helps
"FIRST is like a pizza, we all think different toppings should be on it" - Andrew Schreiber [more] 
15-01-2006, 21:04
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