If you're like me and crash a lot (I'm a terrible pilot), bent motor shafts are a weekly curse. There's no good way to straighten them, so I have to replace the entire motor. That's expensive, and requires a lot of soldering of wires and remounting motors. So good news: now you can just replace the bent part, leaving the rest of the motor soldered and in place! 3DR now sells just the outside enclosure and shaft of the common 3DR 850 motors. They're half the price of the full motor and will save you many minutes of soldering and reassembly time.
(Why not just sell the shaft? Because they're really tightly placed in the enclosures and need special tools to replace).
I've asked them to also see if they can source the aluminum collets that the props fit on. They're soft and also tend to bend and they're hard to find on their own. Stay tuned...
Comments
I was also breaking and bending a lot of motor shafts when I first starting flying my quad. I ended up buying about a meter of 4mm ground and polished tool steel shafting (amazon). I used a dremel tool to cut the shafts to length and mill a few flat spots on the shafts for the set screws. I needed to reduce the diameter a very small amount to get them to fit the motors. This is done by chucking the shaft into a drill and polishing the shaft using 320 grit emery paper. You need to be carefull not to take off too much but at the price, about $0.50 per shaft a few mistakes don't cost much.
If you cut the shaft down shorter with a dremel tool and let the bottom of the collet touch the purple part of the motor the shaft is much harder to bend.
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