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Pulley nut problems

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Old Mar 3, 2024 | 03:10 PM
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Default Pulley nut problems

Was all brand new parts cleaned and torqued to spec got about 15,000km what will fix this or upgrade .my only idea is that Jim's big nut and going with aluminum evolution industries pulley lighter rotation mass



 
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Old Mar 3, 2024 | 04:30 PM
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What model year is the bike?

The splines on the main drive gear may be worn, allowing the sprocket to wobble on the shaft.

Replace the main drive gear, the sprocket (use a steel OEM sprocket).

Replace the spacer and all the seals and the nut and screws, of course.
 
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Old Mar 4, 2024 | 03:52 PM
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Originally Posted by Dan89FLSTC
What model year is the bike?

The splines on the main drive gear may be worn, allowing the sprocket to wobble on the shaft.

Replace the main drive gear, the sprocket (use a steel OEM sprocket).

Replace the spacer and all the seals and the nut and screws, of course.
2004 ..5speed I used a 34 tooth Andrew pulley for around 7 years no problems I 5th gear looked good when assembled few.years ago and yes its no good now looking for a replacement number for 2004 5 gear main drive now
 

Last edited by djl; Mar 7, 2024 at 11:38 AM.
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Old Mar 7, 2024 | 11:05 AM
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The stock stuff is fine as long as you replace all the worn stuff.. You need to follow the torque spec in the SM.. In this case, you'll need a pulley, MDG, MDG bearing, pulley spacer, nut, locking plate and screws minimum.
 
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Old Mar 9, 2024 | 09:26 PM
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Think i found my problem suppose to be 8 thou and it's around 10 or 11 runout probably doesn't help with high-speed wobble
to bad
 

Last edited by Dudlybooth; Mar 9, 2024 at 09:29 PM. Reason: Need more info
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Old Mar 9, 2024 | 09:50 PM
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Originally Posted by Dudlybooth
Think i found my problem suppose to be 8 thou and it's around 10 or 11 runout probably doesn't help with high-speed wobble
to bad
Are you serious?

You have been given sound advice on how to fix the issue, replace the main drive gear, the matching gear on the countershaft, the big ball bearing, sprocket spacer, sprocket, lock, nut, screws...

You cannot measure runout on the left end of the mainshaft when it is not supported by a bearing, you are wasting your time.

 

Last edited by Dan89FLSTC; Mar 9, 2024 at 09:56 PM.
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Old Mar 10, 2024 | 11:43 AM
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You need to listen to these guys: Dan89FLSTC, Max Headflow

It's time to get your hands dirty.

Had the exact same issue as you. All is good doing exactly what has been already suggested.
 
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Old Jun 6, 2024 | 03:58 PM
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Old Jun 6, 2024 | 03:59 PM
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Used grade 9 and seems to be holding
 
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Old Jun 6, 2024 | 04:44 PM
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Originally Posted by Dudlybooth
Used grade 9 and seems to be holding
You could use grade 3 there without issue... The tensile strength of the screw ain't the issue..
 
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