My motor is damaged, it doesn’t spin properly.
The bell is unstable and bounces on the shaft.
I think the magnets are unbalanced.
Can someone help?
#problems with motor 😭
mighty stratus
stiff eagle
My motor is damaged, it doesn’t spin properly.
The bell is unstable and bounces ...
You could show a video of how it spins
mighty stratus
Ok one sec
stiff eagle
And saying "I think the magnets are unbalanced" isn't really a thing, cause if they get "unbalanced" you either pointed an electromagnet at them, or they just fell off
mighty stratus
mighty stratus
And saying "I think the magnets are unbalanced" isn't really a thing, cause if t...
Ohhh
The magnets are still on there
And i do you think that it could the shaft which is bent?
It doesnt look like it tho
stiff eagle
Yeah well you can either buy a new motor bell, or a new motor
stiff eagle
Can you take a picture with the shaft on the middle being straight relative to the camera ?
mighty stratus
Ye
stiff eagle
And of the stator without the bell
worthy elk
Have you lost the screw that holds the bell to the main assembly of magnets
stiff eagle
If not, try to re tighten it, if you did, any short-ish m3 screw will work
mighty stratus
No screws, only these
stiff eagle
Oh, well that's the issue
Put the bell back on, grab a short m3 screw, and from under the motor, screw on the bell
stiff eagle
But the motor doesnt originally come with a screw in it
Can I see the bottom of another of the motors ? Try to get a clean focus
Cause your motor might use a c clip
mighty stratus
Yeah sure
But can you give some time, i have to go out rn 😭.
Worst moment to leave fr
valid citrus
@stiff eagle this motor doesn't have a retention screw, it uses a C-clip
@mighty stratus did you need to remove that black C-clip in order to take the bell off, or were you able to take the bell off without removing anything?
valid citrus
The movement in this video suggests to me that the bearing may be destroyed
Even without the C-clip in place it should not wiggle that much
mighty stratus
<@891312201850318888> did you need to remove that black C-clip in order to take ...
Yeah i had to remove the c clip.
valid citrus
Very not good. Unless you're comfortable with replacing press-fit bearings, it's probably time for a new motor
mighty stratus
The thing is that normally the bell snaps onto the stator automatically.
But now it refuses to snap onto the stator without me forcing it in
The magnets repulse each other
valid citrus
Try desoldering the motor leads from the ESC
Once you've done that, see if the motor bell pops back on like you'd expect it to
valid citrus
If removing the motor from the ESC causes the magnetism of the bell to behave normally, then you also have a bad/shorted ESC, and you'll need to replace both the motor (wiggly bell bad) and the ESC
mighty stratus
Ohhh
Shit
If i may ask, why would the esc influence the way the belle snaps to the stator
valid citrus
Yea, I'll try to give a "brushless motors simplified" version
The MOSFETs in an ESC are what controls power flow to each of the 3 phases in the motor (like fancy micro-electronic switches). The ESC alternates power flow through these MOSFETS into the phase coils of the motor stator--that power flow interacts with the permanent magnets on the bell, causing it to spin. Conversely, if you manually rotate the bell, it induces power in the coils, which feeds back into the ESC.
If an ESC has a shorted MOSFET (switch stuck open), then two of the phases in the motor are connected to each other. When you manually rotate the bell in this case, the power flows from one coil to the next, causing what we call "back EMF", which you feel as the bell being much harder to rotate by hand--like it's resisting you.
When you de-solder the motor from the ESC, you remove the motor from that connection, so rotating the bell by hand should be easy again
mighty stratus
Oh damn
Thank you very much for the explanation
It helps a lot
I appreciate it
So the esc influences the motor even if the drone is not powered on?
valid citrus
It's all an interconnected system, so yes, there are ways that they function together even when power isn't applied
worthy elk
Oh, well that's the issue
It’s always the simple things 😂
stiff eagle
It’s always the simple things 😂
I wouldn't say always, but very often yeah
Plus my internet crapped out on me midway through the discussion so that was mildly inconvenient
mighty stratus
@valid citrus
You cant see it in the picture but some magnets touch the stator and some dont
mighty stratus
Motors done for
Yeah i think it is 😭
valid citrus
You cant see it in the picture but some magnets touch the stator and some dont
Bent shaft, trash the motor