Quote:
Originally Posted by Cal578
Do you know how much radial load you had on your mini-CIM shaft? 20-30 shots seems like a really quick failure. Did you also have much axial load?
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I don't have a quantitative measure of the side load on the motor shaft. The guys were experimenting with different amounts of compression so it could have gotten higher than most people would actually use. Matters are complicated by the fact that they mounted the motor on a 1/8 inch thick polycarb plate that was mounted to the shooter plate (1/4 inch plywood). Both the polycarb and plywood were observed flexing as the frisbees went through.
I suspect that in our application, the shock load of the frisbee being put into the shooter may be what ultimately damaged the bearing. Another possibility is that we got the one bad mini-CIM in the batch since it doesn't seem like anyone else had a similar failure.