Quote:
Originally Posted by Jared341
Try as I might, I cannot understand the logic here. An axle bears the same load whether it is live or dead. I have never seen a drive axle in FRC bend due to fatigue (violent shock loads are almost always the culprit, and live vs. dead makes no difference here). If your axle is fatiguing, it is woefully undersized (and/or a poor choice of material).
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because a live axle is always spinning, every time there is a shock load, or the robot sits for a long period of time, the axle is in a different orientation. however ALL the shock loads on most dead axle setups occur with the axle in the same orientation. So after a while the axle may start to bend in that direction. I haven't noticed this problem with our .5 inch dead axle robot> But on the cart was made from the kit-frame, the axles are severely deformed and bent. this was also a problem on our 2009 prototype. In a year like logomotion, this may not be an issue, in a year like breakaway, where every time a robot came off the bump the axle took the shock in the same way, I think it could definitely contribute to some bending.