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Old 12-04-2007, 08:29 AM   #1
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Default ★ LRP Brushless Rotor Badness? or Balancing? ★

i purchased LRP 4.0T brushless motor in today..

i opened the motor case before put it in my EP.


and i found rotor had some deep-set groove.

LRP rotor was coated some chemical(like varnish)

deep-set groove also was coated.


and i had LRP 4.5T motor what 3 days used.

so i opened it and found some deep-set groove.

it also was coated.


some my rc friends said it was like rotor balancing.

But i have not seen deep-set groove rotor..

so my thought is that it was badness product.


how about you think?
Attached Thumbnails
★ LRP Brushless Rotor Badness? or Balancing? ★-4t1.jpg   ★ LRP Brushless Rotor Badness? or Balancing? ★-4t2.jpg   ★ LRP Brushless Rotor Badness? or Balancing? ★-45t1.jpg   ★ LRP Brushless Rotor Badness? or Balancing? ★-45t2.jpg  
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Old 12-04-2007, 08:33 AM   #2
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I'm no expert, but that "groove" doesn't look like it's got the finish from being machined, like you might expect from balancing. It looks more like a chip, or a flaw in the magnet.
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Old 12-04-2007, 08:34 AM   #3
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Looks like balancing to me.
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Old 12-04-2007, 08:41 AM   #4
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looks to be shaved for balancing
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Old 12-04-2007, 09:05 AM   #5
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i think that coating job must be done before balancing..

But deep-set groove(balancing?) was also coated.

i quess it put on some air when do rotor molding job.

and.. i have not seen other maker rotor looks like that..
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Old 12-04-2007, 09:26 AM   #6
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Rotor looks good and should perform just fine.....


Are you experiencing problems with its performance ?
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Old 12-04-2007, 09:33 AM   #7
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Quote:
Originally Posted by Wild Cherry View Post
Rotor looks good and should perform just fine.....


Are you experiencing problems with its performance ?
i used 4.5T for 3days.. But i did not satisfied with 4.5T power..

so i purchased 4.0T in today.. and i found similar phenomenon.

i did not test 4.0T. and i will ask that it was badness or good to LRP korea distributor in tomorrow
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Old 12-04-2007, 09:34 AM   #8
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and i also opened my rc fellow's LRP 3.5T

But it did not have deep-set groove.. very clean..


why My LRP 2 motors had deep-set groove?

i could not understand..
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Old 12-04-2007, 10:40 AM   #9
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I may be mistaken, but I believe the rotors should be the same, but the can may be different (where the "windings" actually are.) between your two motors. I would send it in to LRP.
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