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5th gear noise

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Old Aug 26, 2008 | 11:17 AM
  #21  
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Wouldn't a new softail have the exact same noise? Where would buying a new bike fix that?
 
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Old Aug 26, 2008 | 11:37 AM
  #22  
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Originally Posted by keno
I hear about the 5th gear noise all the time. I wonder why mine doesn't do it? Is it only 07's?
I've got an '08 FLSTC and my 5th gear is smooth and quiet. Maybe it is '07's only.
 
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Old Aug 26, 2008 | 11:43 AM
  #23  
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Originally Posted by FXDSE2
I took aLL the suggestions from the threads on this topic (5TH fear noise in my 2007 Softail Heritage) and went to my HD dealer. They said that none of the suggestions would really solve my problem and would probably spend $$$$ and end up with the same situation. OK, I will take them at their word since they are turning away money.

I have 2 choices and am asking for your opinions...1. Spend the bucks and have a 7 speed tranny with all cross-cut gears put in...probably $1600 or more OR 2. trading in the bike for a new one...probably a $6000 loss and losing all my upgrades.

Economically the tranny exchange would be the best bet by far from a financial standpoint but the money is not my primary concern. What would you do? FXDSE2
Since you're talking about spending some serious cash to fix the problem why not spend a little to see if you can help quiet it some? There are about five different synthetic gear oils that can be tried. Why some will quiet one bike and not another is kind of strange but that seems to be the case. Use Mobil 1 76w90 for 500 miles. Stay in fifth at 55 or higher. Then change to Mobil 1 75w140 and go another 500. If it's still noisier than you want go to Redline for 500 and then to Amsoil for 500. Your experiment with all these different gear lubes might help someone else with the noise. Cheaper than buying a new gear box or bike and might be an interesting experiment. You'll at least get good at changing the tranny fluids.
 
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Old Aug 26, 2008 | 11:55 AM
  #24  
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07 FLSTC and have a llittle whine also. at 1k put n syn3 and stage 1, did help but was never a problem anyway, the pipes does cover it up and I also notice that if I ride without windshield it is all but gone and I have to really listen to hear it.
At 10K service went with formula+, it helped, and at 13+k I dont hear the whine at most speeds, If I think about it and really listen I can hear it sometimes.
Could be one of those things to that the more it bugs you the more you hear it..
 

Last edited by oct1949; Aug 28, 2008 at 12:13 PM.
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Old Aug 26, 2008 | 08:44 PM
  #25  
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My 08 Train is good, I don't hear any noise in 5th, with the exaust and wind, hard to hear much else. I also don't use it till I'm over 55 mph.
At 1000 miles I had syn oils put i the whole bike and the trans shifts so much better than before.
 
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Old Aug 27, 2008 | 07:49 AM
  #26  
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my noise has gone with the use of bel-ray gear saver.
http://www.belray.com/consumer/product.fsp?pid=13637
 
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Old Aug 29, 2008 | 04:24 PM
  #27  
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Default 5th Gear Noise

Changed out the Tranny fluid for Red Line Heavy Duty 75/140 and did it make a difference. The shifting is smoother and the 5th gear noise which previously stayed loud all through the RPM range, now is only heard at 2100rpm and lower. Once I am above 2100 it disappears by at least 90+% and if I was not aware or listening for it, it would be impossible to hear. Actually the whole bike sounded different...the pipes seemed louder and throaty and the engine/tranny noises were as if muffled in cotton. The Red Line Tranny Lube is DAMN GOOD!!!!

FXDSE2
 
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Old Aug 29, 2008 | 04:31 PM
  #28  
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My 5th sounds a lil' different, but not enough to bother me. Mine's an '07.
 
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Old Aug 29, 2008 | 04:38 PM
  #29  
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07 fatboy here. I have never heard this so-called 5th gear whine. I do use mobil 75w90 gear oil. maybe that's why i don't hear it.
 
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Old Aug 29, 2008 | 07:14 PM
  #30  
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Originally Posted by DMJFatboy
07 fatboy here. I have never heard this so-called 5th gear whine. I do use mobil 75w90 gear oil. maybe that's why i don't hear it.
My wife didn't hear it on her 08 Deluxe either, until I put a windshield on it. Neither of us have any whine, least we don't notice it. Both have the rattle/clatter in 5th.
 
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