Since some of the magnets had come loose after some rough flights, I had to disassemble the Tricopter 2213N 800Kv AXN motors.
While I was gluing the loose magnets in place I noticed that the winding wasn’t very neat on the stator and there was pretty much room for extra copper, so I decided to rewind them.
The original motor (on the left) had 12 turns of 4-strand wire of pretty low quality. On my rewound motors I used 0.5mm wire (0.46mm pure copper 0.04mm insulation) and made 13 turns per tooth to lower the kV a bit.
The back before connecting together the wires.
Original wire from one motor.
This is the schematics I followed when rewinding the motors. It’s the same layout as original windings.
All three done!
I thought they turned out pretty neat for being my first try.
I think they look much better.
Time to test them out!
To get an accurate comparison to the stock motors I mounted the motors on the tricopter, using the exact same electronics and settings. I made sure that it weighed the exact same as when I timed the flight last time in which I got 15 minutes flat.
This time I got 16.5 minutes! That is an 10% increase in flight time!
Pretty good considering all I did was to swap out some copper. The rewound motors can also handle higher current due to the increased copper area.