Removal of broken "Prop bayonet" from within motor

[restyler]

I'd noticed a slight crack starting on the blade of the front LH prop on my M2Z, so was swapping it for a new prop which decided it wasn't going on without a fight.
Closer inspection showed one of the old props bayonet fixings (do they have a different name?) was embedded in the top of the motor & didn't want to come out.



I removed the 3 top cover screws with a 1.5mm Allen Key

And the cover was removed

It still wouldn't budge, so eventually had to prise it out with a watchmakers screwdriver


Job Done - Decided to swap all 4 props & check for damage more often

 

[old man mavic]

@restyler you were lucky it didnt jam the motor during flight ,and is one of the reasons for regular airframe checks ,and another reason why i always remove my props on my MPP after a days flying ,glad you were able to fix it

 

[old man mavic]

@restyler if you have some blue thread-lock i would put a very tiny amount on the screws that hold on the prop locator to the top of the motor ,use a toothpick to apply it

 

[restyler]

@restyler if you have some blue thread-lock i would put a very tiny amount on the screws that hold on the prop locator to the top of the motor ,use a toothpick to apply it

Hmmmmm - we only use thread lock at work generally on things that wont need servicing for at least 10 years - and then the only way of removal is heating up the area to 200C+ to soften it.
I'd have real concerns about doing the same here - I believe I tightened them to the correct torque {No wrench nessessary, just 40+ years of engineering experience}

 

[old man mavic]

if you use the semi permanent type then you will be able to remove it when the time comes ,on the Mavic Mini drones the screws that hold the props in place come with a paste type thread lock already on them and they recommend one use only ,its entirely up to you whether you use it or not

 

[Yeunglings]

Yeah blue 242 is a semipermanant threadlocker in that it won't budge on its own, you need to actively apply reverse torque to crack it free. Kinda like a super Elmer's starch glue. Vibrations and such won't effect it. I believe that there are white versions from other companies out there as well but Loctite blue is the most commonly seen. As Old Man Mavic said the MM and Mini2 use it for their propeller threads in a predried form. When replacing the props you also use the new screws that come with them and the sheer act of screwing in activates the threadlocker.