What hath we wrought? 2016 Horror Stories

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I'm slightly surprised BillFred has't posted his sign from Palmetto in this thread, for a while the CDF was not an option, they were ALL broken! Granted this was before HQ had the metal reinforcements put in them, but still, 1/2 inch polycarb is pretty hard to break. Other stories of motors releasing their magic smoke, I'm sure there are plenty, as well as connection losses because of wires jarring loose, I know we had that problem in the finals in Palmetto. We also had a minor issue with our 3d printed drive pullys, we used an elongated version of the rhino track this year with some Breco-flex belts and originally we 3d printed pulleys for them to run on, needless to say, those didn't make it through one competition, we replaced the 4 corners with metal pulleys for our second regional.