Reversing a Hacker Style Brushless Motor 20-22L.
The Hacker Style Brushless(20-22L) motor finds a very common use in Quadcopters. Unfortunately the only way to mount the motor on a frame is to reverse the shaft so that the mounting holes can be used for what they were meant for..mounting.
dontenorio69 has a very helpful video on how to do this. The same process is detailed below, but with pictures:
- The Hacker Style comes with all mounting hardware as well as some spares including an extra circlip, in case yours goes flying when you try to pop it out.
- First remove the circlip from one end of the shaft. Then loosen the grub screw from the other end. After this, the rotor and armature should separate. There is a tiny washer near the circlip end inside the motor. Keep this safe in case you need it later. Yo will not need it again for the reversal.
- With a thin ended screwdriver, hammer the shaft out. It will take a few tries to get out.
- Once the shaft pops out, reverse it and hammer it back in, so that there is enough shaft left for the circlip to clasp on. The following iluustrations will make this clearer.
- Now it’s time to cut the shaft so that the prop adapter fits easily. The shaft will be too long for the adapter to fit. You can cut it with a Dremel using cut-off discs made specifically for cutting metal.
- Before cutting the shift, remember to tape off the motor holes to prevent any metal shavings to go inside the motor. The simplest way is to make a mask from scotch tape.
- Fully assembled motor with 10×4.7 APC prop.