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allanbegg
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« on: August 26, 2021, 06:12:12 AM » |
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All,
My bike ('99 I/S with 172K miles) suddenly developed a strange noise.
The noise is very easy to reproduce. It happens at the no-load point between engine acceleration and deceleration. It sounds like a "chatter" in the driveline. When the engine is pulling, everything sounds fine. When there is engine braking, everything sounds fine. However, at the transition between pull and brake, there is a terrible chattering noise.
I replaced the rear wheel dampeners, along with driveshaft, pinion cup, o-rings, etc during a rear service, but they all have about 50K miles on them.
We pulled everything apart last night and the only wear (or slack) that I can find is with the wheel dampeners. They are all loose in the pockets, with a couple moving about an 1/8 inch and a couple moving about 3/16 inch. There is a fair amount of rubber dust in the pockets. I'll replace the dampeners, but am not certain that this is the cause of the chatter.
Should I keep looking for another issue, or do these dampeners cause a racket when they wear out?
Thanks, Allan
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VRCC # 36795
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RonW
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« Reply #1 on: August 26, 2021, 06:22:30 AM » |
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Just wedge (shim) them tight and if the sound goes away.
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« Last Edit: August 26, 2021, 06:25:59 AM by RonW »
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2000 Valkyrie Tourer
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Chrisj CMA
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« Reply #2 on: August 26, 2021, 06:27:25 AM » |
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While it’s apart pull the u-joint. The sounds you describe do not match up to worn dampeners. I agree yours most assuredly need to be replaced the fact that they are not worse means keep looking. U-joint is likely. How did the pinion cup look?
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Bagger John - #3785
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« Reply #3 on: August 26, 2021, 06:38:04 AM » |
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While it’s apart pull the u-joint. The sounds you describe do not match up to worn dampeners. I agree yours most assuredly need to be replaced the fact that they are not worse means keep looking. U-joint is likely. How did the pinion cup look?
+1 |
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allanbegg
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« Reply #4 on: August 26, 2021, 07:01:25 AM » |
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While it’s apart pull the u-joint. The sounds you describe do not match up to worn dampeners. I agree yours most assuredly need to be replaced the fact that they are not worse means keep looking. U-joint is likely. How did the pinion cup look?
Pinion Cup only has 50k miles on it and still looks as new as the day I installed it. All splines on the driveshaft (also 50K miles) look great, with no signs of wear. Opened up the differential and ring/pinion gears look beautiful. I'll pull the u-joint later today, to get a better inspection of it. Thanks for the input, so far. Allan |
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VRCC # 36795
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allanbegg
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« Reply #5 on: August 26, 2021, 10:05:21 AM » |
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Update:
U-Joint for the win (er, fail). It is completely trashed.
I'm surprised that the bike was still rolling under it's own power.
Should be a relatively easy and inexpensive fix.
Thanks for the suggestions and help.
Allan
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VRCC # 36795
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..
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« Reply #6 on: August 26, 2021, 11:07:18 AM » |
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Update:
U-Joint for the win (er, fail). It is completely trashed.
I'm surprised that the bike was still rolling under it's own power.
Should be a relatively easy and inexpensive fix.
Thanks for the suggestions and help.
Allan
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Avanti
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« Reply #7 on: August 26, 2021, 11:51:54 AM » |
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That might hold a record, at least in my book it does.
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pancho
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« Reply #8 on: August 27, 2021, 12:46:39 PM » |
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Wow,,, hard to believe the only noticeable symptom was the noise. You're going to think you got a new bike when it's back together.
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #9 on: August 27, 2021, 07:14:21 PM » |
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You might need a new boot. A little more soft and pliable, for re-installation. Alcohol makes the rubber slide, and dries completely.
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1999 Black with custom paint IS   |
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Valker
Member
Posts: 2995
Wahoo!!!!
Texas Panhandle
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« Reply #10 on: August 27, 2021, 07:26:07 PM » |
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You might need a new boot. A little more soft and pliable, for re-installation. Alcohol makes the rubber slide, and dries completely.
Those three beers I had last time I tried to get the boot on did NOT make it easier!!  |
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I ride a motorcycle because nothing transports me as quickly from where I am to who I am.
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The emperor has no clothes
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« Reply #11 on: August 27, 2021, 07:33:45 PM » |
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You might need a new boot. A little more soft and pliable, for re-installation. Alcohol makes the rubber slide, and dries completely.
Those three beers I had last time I tried to get the boot on did NOT make it easier!!  |
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Grandpot
Member
Posts: 630
Rolling Thunder South Carolina Chapter 1
Fort Mill, South Carolina
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« Reply #12 on: August 30, 2021, 03:18:26 PM » |
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You might need a new boot. A little more soft and pliable, for re-installation. Alcohol makes the rubber slide, and dries completely.
Those three beers I had last time I tried to get the boot on did NOT make it easier!! You were supposed to pour the beer on the boot for lube. |
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 Experience is recognizing the same mistake every time you make it. |
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