An "Squeak-like" noise seeming to come from the belt - Road Glide Forums
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post #1 of 17 (permalink) Old 05-17-2019, 08:01 PM Thread Starter
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A "Squeak-like" noise seeming to come from the belt

When I was riding the steep curves and hills of the "Tail of the Dragon" I noticed a "Squeak" coming from the area of the belt on the rear wheel. This seems to happen when I down shifted or quickly let off the throttle in the lower gears. It now seems to be happening more. Any thoughts, such as belt tension? I have 22K miles on the bike, FYI.

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Last edited by woverby; 06-21-2019 at 07:01 PM.
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post #2 of 17 (permalink) Old 05-17-2019, 08:06 PM
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Just out of curiosity, was it a constant noise or like a chirping(on/off)?

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post #3 of 17 (permalink) Old 05-17-2019, 08:12 PM
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Recent rear tire change? I had this issue with my Dyna one time, but it squeaked on hard acceleration.

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post #4 of 17 (permalink) Old 05-17-2019, 08:29 PM Thread Starter
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Originally Posted by BH#103 View Post
Just out of curiosity, was it a constant noise or like a chirping(on/off)?
It was a short chirping, maybe a second.

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post #5 of 17 (permalink) Old 05-17-2019, 08:30 PM Thread Starter
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Recent rear tire change? I had this issue with my Dyna one time, but it squeaked on hard acceleration.
No, I had the tires changed 5K miles before we left on this road trip.

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post #6 of 17 (permalink) Old 05-17-2019, 08:43 PM
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The belt is too loose. I had it happen last year. Didn't realize that's what was causing it until I Googled it.
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post #7 of 17 (permalink) Old 05-17-2019, 08:49 PM
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If the problem persists and you verify it is coming from the belt, adjustment is correct and the belt and pulley are clean of excess dust and debris. Try using some HD Poly Oil spread on a few cogs of the belt.

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post #8 of 17 (permalink) Old 05-17-2019, 08:57 PM
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If you think about the drive belt when under acceleration or constant power, the trans pulley is putting strain on the top half of the belt, as it "pulls" on the rear wheel. Therefore all the slack is transitioned to the bottom half of the belt. Under aggressive deceleration, the opposite is true, the rear wheel is actually applying force to the trans pulley and engine which transfers any slack in the belt to the top half of the belt, which in my experience sometimes leads to a chirp or squeal when the small ridges on the outside of the belt rub on something. I have had it when loaded two up (suspension was sagged more than usual) and downshifting hard setting up for the exit of an upcoming corner. I chased that annoying chirp for months looking at suspension bushings, shock mounts, etc. until I had the bike on a lift and raised the rear end off the table. Once I saw what was happening to the belt with the suspension compressed, I reset the belt tension a bit tighter and have never had a re-occurrence.
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post #9 of 17 (permalink) Old 05-17-2019, 09:00 PM Thread Starter
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Quote:
Originally Posted by Dmerch View Post
The belt is too loose. I had it happen last year. Didn't realize that's what was causing it until I Googled it.
Thanks!

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post #10 of 17 (permalink) Old 05-17-2019, 09:01 PM Thread Starter
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Originally Posted by WA Bull View Post
If you think about the drive belt when under acceleration or constant power, the trans pulley is putting strain on the top half of the belt, as it "pulls" on the rear wheel. Therefore all the slack is transitioned to the bottom half of the belt. Under aggressive deceleration, the opposite is true, the rear wheel is actually applying force to the trans pulley and engine which transfers any slack in the belt to the top half of the belt, which in my experience sometimes leads to a chirp or squeal when the small ridges on the outside of the belt rub on something. I have had it when loaded two up (suspension was sagged more than usual) and downshifting hard setting up for the exit of an upcoming corner. I chased that annoying chirp for months looking at suspension bushings, shock mounts, etc. until I had the bike on a lift and raised the rear end off the table. Once I saw what was happening to the belt with the suspension compressed, I reset the belt tension a bit tighter and have never had a re-occurrence.
Thanks! Was there damage or wear to the belt until you adjusted the tension?

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