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Valkyrie Riders Cruiser Club > General > 1500 Tech Board > Vibration on High Speed Decel
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Author Topic: Vibration on High Speed Decel  (Read 955 times)
Dr Bobs Patient
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Posts: 267


Okatie, SC
« on: February 28, 2013, 07:10:15 PM »
Had a chance to get the phat gurl up over 80mph on a long stretch of slab.  Was running behind a Mercedez up to 100mph.  When I would let off the throttle (no brakes) the Valk felt like I was riding on a rumble strip.  Below 80, I don't experience this vibe.

Now that being said, I have a 99 I/S with about 58K miles.  Since I purchased her, I've only put about 1k on it.

My first thougts are drive shaft, or u-joint issues.  Any thoughts or similar experiences out there?

DBP
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I keep doing that which I cannot do, in order that I may learn how to do it. - Pablo Picasso
Valker
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Wahoo!!!!

Texas Panhandle
« Reply #1 on: February 28, 2013, 07:33:36 PM »
That is certainly a common symptom of a bad u-joint.
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I ride a motorcycle because nothing transports me as quickly from where I am to who I am.
john
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tyler texas
« Reply #2 on: February 28, 2013, 10:24:52 PM »
58K miles ....               Undecided        ??
      tires            ???            ??
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vrcc # 19002
Oss
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The lower Hudson Valley

Ossining NY Chapter Rep VRCCDS0141


WWW
« Reply #3 on: March 01, 2013, 04:36:20 AM »
did you hear anything or was it a feeling from the front end?

My u joint gave a chattering noise in 4th when I let off the throttle

Order a ujoint, someday you will need it and better to have it in the saddlebag then
to wait a week or more on the road for a new one to arrive

do you have any cupping on the tires?  I doubt its the tires though

Do a complete spline service and drive shaft u joint inspection before any long trip

Just my opinion
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Oklahoma_Valk
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Central OK
« Reply #4 on: March 01, 2013, 08:09:52 AM »
U Joint!
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Let those who ride decide.
F6BANGER
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Albuquerque NM
« Reply #5 on: March 01, 2013, 08:49:59 AM »
+1 U-joint
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gordonv
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VRCC # 31419

Richmond BC
« Reply #6 on: March 02, 2013, 04:45:28 PM »
New to you bike, good time for a rear end service and inspection of the u-joint.

Like mentioned, better now than on the road somewhere.
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1999 Black with custom paint IS
Dr Bobs Patient
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Okatie, SC
« Reply #7 on: March 03, 2013, 05:35:53 PM »
Not the tires. They are wearing fine, replaced the rear 1,000 miles ago with CT, but didn't get into the drive train as the splines were well lubed.  I rebuilt the front forks with Progressive springs and replaced the rear shocks with Progressives 416 air.  Yeah I know should have done the drive train when I did the rear wheel but didn't know better then.  Looks like I should just go ahead and get into the drive train while the weather is still a little cool.

Thanks for confirming my suspicions on the u-joint.  I'll order one and have it on hand when I tear her down.

DBP
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I keep doing that which I cannot do, in order that I may learn how to do it. - Pablo Picasso
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