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Transmission problem on FXDB ??

   
Old Jul 17, 2014 | 08:53 PM
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From: Yorba Linda
Default Transmission problem on FXDB ??
I have a 2007 Street bob. There is a whining/screeching sound that seems to be coming from my primary.. but I cant tell. It only happens in 5th gear..


I adjusted the clutch (not just the cable) hoping that would fix it, but it did not..


Any idea what this could be?


Thanks!
 
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Old Jul 17, 2014 | 09:11 PM
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Could be your Inner Primary Bearing,just a guess ,any oil leaks on your primary side??
 
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Old Jul 17, 2014 | 09:36 PM
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Kaycee-

Nope just checked, There's no leaks. Would the primary bearing cause the bike to make that sound in only one gear?
 
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Old Jul 18, 2014 | 05:28 AM
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Search the forum for 5th gear whine. Lots of complaints. Doesn't happen on mine but it could be the helical cut 5th gear if you have it.
 
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Old Jul 18, 2014 | 06:10 AM
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The 07 had a straight cut fifth gear, while 4th and 6th are helical cut. That's what you are hearing. Harley has a helical cut 5th if you can't stand the noise.
 
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Old Jul 18, 2014 | 09:56 AM
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Originally Posted by Mark@ Baker Drivetrain
The 07 had a straight cut fifth gear, while 4th and 6th are helical cut. That's what you are hearing. Harley has a helical cut 5th if you can't stand the noise.
I bet that's it. Totally normal on your bike. Mine does the same thing.
 
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Old Jul 18, 2014 | 11:56 AM
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Originally Posted by Mark@ Baker Drivetrain
The 07 had a straight cut fifth gear, while 4th and 6th are helical cut. That's what you are hearing. Harley has a helical cut 5th if you can't stand the noise.
Yep mine and several other 6 speed cruise drives i been around too. Think of it as incentive to speed up and hit 6"th
 
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Old Jul 18, 2014 | 12:37 PM
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Awesome! Thanks for the input everyone. I always ride with a full face and music blasting, So I don't know how long its been going on. I rode with my brain bucket the other day and was able to notice the sound.

I'm glad to hear there's a chance its nothing serious.
 
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Old Jul 18, 2014 | 01:04 PM
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Does it only happen when you're doing wheelies?
 
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Old Jul 18, 2014 | 01:16 PM
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Originally Posted by jluvs2ride
Does it only happen when you're doing wheelies?

no, I WISH my bike could pop the wheel up in 5th gear... lol
 
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