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Jun 18, 2019, 07:27 PM
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Discussion

strange motors noises?


I powered on these motors for the first time, the numbers 1 (the first in the video) and 2 sounds silent, while specially the number 3 but also the number 4 (respectively the second and the third in the video) are noisy.
do you think is that normal?
I checked and I don't see any screw or anything that can cause this.

VID 20190619 015451 (0 min 33 sec)
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Jun 18, 2019, 10:01 PM
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justright's Avatar
Has the motor collided? or some sand in the motor?
Jun 19, 2019, 01:07 AM
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Originally Posted by justright
Has the motor collided? or some sand in the motor?
I don't think they are brand new
Jun 19, 2019, 10:49 AM
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LemonC's Avatar
just fly it.
Jun 19, 2019, 12:04 PM
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Originally Posted by LemonC
just fly it.
is it normal ? why the noise is so different?
Jun 19, 2019, 01:53 PM
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i must apologize, the first time i clicked the video, i must have been distracted bc i did not catch the motor noise on number2...!

does the motor feel different when you turn by hand compared to the others?

maybe something is binding? or a slipped magnet or something? does the motor have a c-clip or a screw to hold the bell on? is there enough clearance on the motor mount for the bell shaft to not rub again your mount or carbon ?

have you tried swapping that motor to a dif esc?
Jun 19, 2019, 03:12 PM
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Quote:
Originally Posted by LemonC
i must apologize, the first time i clicked the video, i must have been distracted bc i did not catch the motor noise on number2...!

does the motor feel different when you turn by hand compared to the others?

maybe something is binding? or a slipped magnet or something? does the motor have a c-clip or a screw to hold the bell on? is there enough clearance on the motor mount for the bell shaft to not rub again your mount or carbon ?

have you tried swapping that motor to a dif esc?
I tried swapping that motor to a dif esc with the same result, I removed the c-clip but I can't remove the bell, any suggestions? anyway the motor number 4 (the third in the video) should be ok, the noise is enough similar right?
Jun 19, 2019, 03:13 PM
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you have to pull really hard on those bells, the magnets are strong.
Jun 19, 2019, 03:34 PM
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well I pulled as hard as I can but it didn't move one millimeter
Jun 19, 2019, 03:37 PM
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could one of the screws holding the prop mount maybe be rubbing the inside of the stator?
Jun 19, 2019, 03:39 PM
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anyway turning it by hand feels the same compared to the others, maybe a bit more jerky, but very little
Jun 19, 2019, 03:42 PM
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no I tried without the prop mount, also the screws on the arm are less tight than on the other motors
Jun 19, 2019, 04:29 PM
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I did it, but I can't see anything wrong here
Jun 19, 2019, 04:46 PM
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i mean the prop mount screwed to the top of the bell...

check the bearing while you have it cracked open. do they feel smooth? if one doesnt feel totally smooth, its prob that.

also make sure your stator isnt moving around. i had a dys motor who's stator came loose (unglued) and would move a bit under power.

*and do you see any scratch marks on the magnets possibly?
Jun 19, 2019, 05:04 PM
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yes if you see in the video there aren't the props mounts
the bearings feel smooth and the stator isn't moving around
I don't seem to see scratch marks on the magnets
Last edited by miky94; Jun 19, 2019 at 05:52 PM.


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