Hello all
so these motors are awesome . They cost 6.5 dollars and if prepared right they are really reliable .
In this article I'm going to go threw the motor preparation steps .
there are not only suggestions but a requirements for reliability with these motors .
first you will need to strip them down .
once you have stripped the motor you will need to epoxy the wires . if you don't they will break and you will need to fix it witch is not a fun thing to do . if they are not epoxied they might fail in flight .
now you will need to remove the locking grub screws on the shaft this is the most critical part . if you don't do this step and you are planning on using the threaded section on the shaft to mount the prop the bearings will seizes and fail .
once you have removed them you will need to fit a prop or a spacer and a wing nut . when you tighten the wing nut the shaft will move in the housing . 
you will need to tighten the nut until the cir clip groove is in line with the bearings .
once it is in line you need to loctite the grub screws. now leave them over night to let the thread locker set .
now you can re assemble the motor and fit the props . if when you tighten the props on and the bearings get tight . you will need to repeat the last step until they don't tighten up any more.
if you wanna mount the motors with m3 bolts . you will need to open the holes on the mounting base .
if you wanna mount with cable ties you will need to make some new holes .
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