Someone tried to drill a hole in the shaft of a NEO 1.0 in a series of circumstances that led to the drill bit breaking. I am fairly sure as from what I have heard that the motor should still be R503 compliant. Do we need to be concerned about the pressing that was done on the shaft? If you press a pinion, you are supposed to remove the core and support the back shaft.
Quite probably. Does it still turn by hand as nicely as a new one? If so, I’d try hooking it up to a controller and gradually increase the speed. Even if that seems ok, we’d label it “Bad?” and only use it as a last resort. Luckily it’s a $48 motor and not a $200 one.
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The force for drilling should be much lower than press fitting… Should be OK.
Heck, you can saw off the end of a NEO shaft and have it legal. A badly drilled hole should be fine!
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I was concerned about the fact that there was enough force to break the bit though.
How large of a bit? And how were you keeping the motor shaft from rotating? In reality you’re still only going to get an answer by testing it, but those two things will affect how much force was applied.
Not sure exactly what bit they were using, probably for a #10.
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Drill bits are brittle. It makes them easy to break. You are suppose to support the rotor when pressing a pinion on it. The V1.0 requires taking the backshell off to do this. The V1.1 lets you screw a 10-32 screw into the back shell. See the Neo web page.
If the motor spends freely you probably did not over press it. But this is internet advice.
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