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Old 10-21-2008, 04:20 PM   #1
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Default broken rotor on brushless motor

has anyone had the rotor break on their brushless motor?
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Old 10-21-2008, 04:23 PM   #2
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more specificaly the shaft at the pinion broke at the bearing, without an impact.
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Old 10-21-2008, 04:33 PM   #3
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Yeah i've seen this on LRP motors, again without hitting anything. The whole motor was sent back to the distributor and replaced free of charge.
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Old 10-21-2008, 05:08 PM   #4
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thanks it is an LRP
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Old 10-21-2008, 05:11 PM   #5
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Yep

A mate lent me a LRP 6.5...that did the same thing

Then his 10.5 did the same

I could see an airbubble in the shaft, where the shaft isnt correctly made

Bad batch of rotors.......LRP should sort this soon though.
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Old 10-21-2008, 05:25 PM   #6
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saw the magnet come off of the entire shaft on a Novak 10.5 last week...magnet would spin when you gave it power, but the shaft wouldn't spin at all
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Old 10-21-2008, 06:06 PM   #7
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I've had a VXL motor shatter the magnets and a Castle Creations motor snap on the pinion shaft. So yes it happens.
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Old 10-21-2008, 06:20 PM   #8
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thanks guys for all of the replies
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Old 10-22-2008, 01:50 AM   #9
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I have seen a few castle creation rotors break
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Old 10-22-2008, 02:07 AM   #10
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The earlier LRP 4.5's were bad for this,

LRP wouldnt acknowledge the issue but would replace free of charge
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Old 10-24-2008, 03:24 AM   #11
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I have had the same problem with Nosram motors as LRP( 3 rotors broken at the pinion end), but only with the standard rotor,now I use the 12.5mm rotor and I have not seen the problem after this.
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Old 10-24-2008, 03:42 AM   #12
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whats the normal rotor size for a nosram 3.5.
Is it fine if i change the timing.
How many more kv will the motor give if i had 1 timing i.e timing 3 instead of 2.
how more kv ??
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Old 10-24-2008, 11:38 AM   #13
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Default Novak...

I had a Novak 13.5 have it's rotor come unglued. THe shaft would just spin. Haven't had the chance to send it to Novak yet.
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Old 10-25-2008, 01:01 PM   #14
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I remember the normal rotor size for a nosram 3.5 to be 14 mm
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Old 08-08-2009, 05:27 PM   #15
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I also have this problem. Can I glue the shaft to magnet with instant glue?
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Originally Posted by Tickle View Post
I had a Novak 13.5 have it's rotor come unglued. THe shaft would just spin. Haven't had the chance to send it to Novak yet.
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