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Old 05-14-2009, 01:41 AM   #1
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Default Brand new Losi 8ight 2.0 clutch nut won't fit Sirio...

Hey guys, the title pretty much says it all. The clutch nut that came with the kit won't fit the crank on the Sirio Kanai III STI. Any ideas? Can i just get a nut that fits the crank? The motor didn't come with one, any ideas are greatly appreciated. hopefully someone ran into this problem also... Thanks, Taylor
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Old 05-14-2009, 06:56 AM   #2
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What do you mean by it dont fit ? It will not screw in all the way or just dont fit the threads. Did you remove the flywheel collet that comes with the engine and use the kit one ?
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Old 05-14-2009, 07:25 AM   #3
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ALL crank thread's are the same pitch on .21-.28's
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Old 05-14-2009, 08:18 AM   #4
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Use the losi collet that came with your kit. Sometimes motors come with a collet that is too long and won't allow the clutch nut to screw into the crank.
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Old 05-14-2009, 08:31 AM   #5
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LOL. I have a EVO III. I thought the same thing. You need to remove the allen bolt that is screwed into the end of the shaft in order to get the nut to slip on.
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Old 05-14-2009, 09:21 AM   #6
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i know how to put it together guys. the clutch nut slips over the crank down to the threads but won't thread on. it's a different pitch. the clutch nut fits my OS motor just fine. Does anyone know if a different clutch nut will fit the threads of that sirio motor. The collets are fine. it's all just the nut won't thread on the sirio motor.
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Old 05-14-2009, 09:26 AM   #7
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Quote:
Originally Posted by Short Bus View Post
i know how to put it together guys. the clutch nut slips over the crank down to the threads but won't thread on. it's a different pitch. the clutch nut fits my OS motor just fine. Does anyone know if a different clutch nut will fit the threads of that sirio motor. The collets are fine. it's all just the nut won't thread on the sirio motor.
That's odd. Losi clutch nut fit on my sirio.
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Old 05-14-2009, 10:42 AM   #8
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Quote:
Originally Posted by Short Bus View Post
i know how to put it together guys. the clutch nut slips over the crank down to the threads but won't thread on. it's a different pitch. the clutch nut fits my OS motor just fine. Does anyone know if a different clutch nut will fit the threads of that sirio motor. The collets are fine. it's all just the nut won't thread on the sirio motor.


Ill say it again...ALL 1/8 .21/.28's share the same Thread pitch for the crank's....Sirio did not go changing anything.
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Old 05-14-2009, 11:18 AM   #9
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Have you tried threading the nut on the shaft without the clutch and flywheel on it ?
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Old 05-14-2009, 11:23 AM   #10
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Are there any shims between the collet and bearing?
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Old 05-14-2009, 11:36 AM   #11
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Bottom line here is that it will fit unless the threads are stripped, the nut is bad, or its not shimmed correctly, or wrong collet. Try threading the nut on the shaft by itself.
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