I have a drone with a motor shaft that got slightly bent. I can't buy a replacement bell because they only sell the motor as a whole. Is there any way to bend the motor shaft back into position?


This will be very hard to do.

If the shaft is very bent, I advise ordering a new one, if slightly bent, you can lay it flat on a table and try to straighten it with a hammer or vice.

  • $\begingroup$ A hammer & vice will likely just crush the shaft or deform it. Very difficult indeed. $\endgroup$ – ifconfig Apr 19 '20 at 21:02
  • $\begingroup$ @ifconfig yes, that's why it's almost always better to get a replacement $\endgroup$ – Xnero Apr 19 '20 at 21:03
  • $\begingroup$ It's worth noting that motor shafts follow a fairly standard range of sizes, both metric and imperial, so if you can't find a spare shaft for your motor, you can probably find one from a different manufacturer that will fit. $\endgroup$ – Robin Bennett Sep 7 '20 at 7:46

I found this interesting method that can work for larger motor shafts. It involves putting the motor shaft into a drill to spin it. Then something longer is attached to the other side so that it can be bent slightly until it is back in place.

straightening motor shaft

Here is a video of it: https://www.youtube.com/watch?time_continue=120&v=9bY8JcDpyRY&feature=emb_title

  • $\begingroup$ It might be worth removing the shaft from the bell, so that only the bent section is between the two chucks. As pictured, you could get a new bend inside the bell. $\endgroup$ – Robin Bennett Sep 7 '20 at 11:58

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