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Originally Posted by /Pyro
Some clarification would be nice.
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I'm sure the two tabs used to be collinear. The tremendous moments about each of the bolts caused them to slip from their fastening and swing around bringing the rather thin rim with them. It is an easy fix. Just extend each tab so that it goes all the way across. That way, there is one member that can take some shearing and tension forces instead of all off the torque being transferred right to the two bolts in the form of a giant force couple.
Make no mistake: The Fisher-Price motor is an absolute beast. So be careful when pocketing sprockets! Leave some steel to help you out.
-Carl
Diversity means diversity in ideas too. Some of the robots from the singapore competition might have employed strategies or ideas that we may not even have come up with in North America. - J Flex 188 [more] 
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