Thread: Vex Versaplanetary gearbox repair
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Unread 14-04-2015, 08:58
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Re: Vex Versaplanetary gearbox repair
We had a shaft pop out of a Vex planetary gearbox several times last year. This was mainly because we had rather large rollers cantilevered off the gearbox, and I don't think they are designed to handle much in the way of axial loads. The retaining ring groove in the splined portion of the shaft is very shallow. After seeing this failure mode about 4 times, I decided to fix it by cutting the groove on the shaft slightly deeper for a 9/16" retaining ring. It hasn't been a problem since.