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Old 03-23-2017, 02:08 PM   #1
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Default Brushless Motor Build Question

I recently picked up a used 17.5 motor that runs, but when I look closely I can see the stator moving for/aft in the can when I give and let off power. Are the stators normally glued to the outer cans or are they a snug press fit? I don't think a stator should be moving, but thought I'd ask.
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Old 03-23-2017, 02:17 PM   #2
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I recently picked up a used 17.5 motor that runs, but when I look closely I can see the stator moving for/aft in the can when I give and let off power. Are the stators normally glued to the outer cans or are they a snug press fit? I don't think a stator should be moving, but thought I'd ask.
As far as I know the stator should definitely not be moving. I've seen both press fit and glue sometimes both. It may work but I would imagine the the motor would heat up. It also probably won't run at its full potential especially if it's sensored. As far as fixing it? Maybe some glue or see what's loose/not right that's letting it move.

I could also be wrong and it works just fine for forever.
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Old 03-24-2017, 05:24 AM   #3
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I took the stator out of the can and used a few dabs of glue on the case and slid the stator back in. Hopefully this secures it enough. Thanks.
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Old 03-24-2017, 06:11 AM   #4
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That's the new adjustable timing motor. Lol built in reverse turbo.
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Old 03-24-2017, 06:36 AM   #5
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That's the new adjustable timing motor. Lol built in reverse turbo.
Must be a new feature.....LOL
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Old 03-24-2017, 09:39 AM   #6
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Might want to use heatsink compound instead of glue.
The stators are usually, 'interference fit', so if tyou need to fill any gaps the compound will be better, otherwise it won't transfer heat out through the can as well.

When you check the temp after a run, measure the outside of the can as well as the inside through a vent hole.
I usually get 5-7degC difference (hotter on the inside)
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Old 03-24-2017, 09:51 AM   #7
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Thanks, I used the thinnest amount possible and only in a few spots just to keep things from moving. I'll be sure to check temps, but in a 12th scale in blinky on 1S things don't heat up much.
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Old 03-24-2017, 11:11 AM   #8
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I took the stator out of the can and used a few dabs of glue on the case and slid the stator back in. Hopefully this secures it enough. Thanks.
No problem! Good luck!
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