Quote:
Originally Posted by highlander
Hold on a second; was your shaft 6061, 7075, or steel? I've seen 6061 shafts bend with a longer lever arm, but with 7075 and a short lever arm like in his picture the gears will be fine (as long as he has the two bearings he mentioned above: one bearing is generally a bad idea)
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7075. The shaft was not bent, however, some of the shafts on the outer wheels on our WCD
were 6061 and got bent. I still think there could be problems though. Looking at the forces involved here, the gear will want to move out of engagement.
Of course, just my opinion; the gear does look closer than the one on my gearbox did to the bearing.
Remember to put some kind of protection over the gears like polycarbonate, else wires will get stuck in there, as well as fingers.
It looks like there are two screws on the bottom of the gearbox that don't go all the way through the nut. Consider switching to thinner locknuts or lengthening the screw just in case.