06 FXD high speed corner wallow/wobble
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Joined: Aug 2016
Posts: 99
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From: Renton, WA
Ive also had the dealer check the balance and wheel bearings already.
Im gonna be taking it on Saturday to have them see if they can figure it out. They mentioned doing a steering head adjustment again. Which maybe I did it wrong all 10 times I tried it. So will see what they come up with.
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Joined: Jan 2015
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From: Sandy Eggo's North County
What viscosity fork oil are you using? Wallowing may be the result of "stiction" also.
Swingarm bearings might need attention also.
Last resort is to reduce your corner speeds...
Swingarm bearings might need attention also.
Last resort is to reduce your corner speeds...
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From: Renton, WA
Seasoned HDF Member
Joined: Jan 2015
Posts: 16,013
Likes: 7,139
From: Sandy Eggo's North County
A rear wobble will transfer to the front, via the swingarm/frame.
A front wobble doesn't transfer to the rear (except in extreme cases.)
A rear wobble will give the sensation that you are "steering with the throttle."
I'm getting wayyyy ahead here. Let's get back to what it likely could be.
A front wobble doesn't transfer to the rear (except in extreme cases.)
A rear wobble will give the sensation that you are "steering with the throttle."
I'm getting wayyyy ahead here. Let's get back to what it likely could be.
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Joined: Aug 2016
Posts: 99
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From: Renton, WA
A rear wobble will transfer to the front, via the swingarm/frame.
A front wobble doesn't transfer to the rear (except in extreme cases.)
A rear wobble will give the sensation that you are "steering with the throttle."
I'm getting wayyyy ahead here. Let's get back to what it likely could be.
A front wobble doesn't transfer to the rear (except in extreme cases.)
A rear wobble will give the sensation that you are "steering with the throttle."
I'm getting wayyyy ahead here. Let's get back to what it likely could be.
Cruiser
Joined: May 2016
Posts: 227
Likes: 45
From: Santa Maria
The swing arm is ultimately rubber mounted and that rear mount can only withstand ~ 100lbs of lateral force. Take a 600lb+ bike leaned over in a corner it should be fine. Until you hit a bump. Once that swing arm moves up, the mount can move laterally. This causes the rear tire to point one direction while the front is pointing another.
A rear stabilizer like a Sputhe or true-trak will fix this by not allowing the lateral movement to happen. FYI, true-track won't sell just a rear. Last I remember Sputhe will.
Not saying this is the problem in your specific case. But if you ride hard enough on a bumpy road this will happen. Improperly setup rear suspension will make this situation worse. I don't care if your rear mount has 10 miles on it. The factory rear mount CANNOT withstand the lateral forces and it WILL give.
This is explained in detail from Erik Buell on the FXR design. Which BTW has a rear stabilizer from the factory. Rubber mounted engines should have 3 stabilizing links to prevent lateral movement. One up front, one out back, and one in the center. Factory Dyna has 1 of 3 (under gas tank).
Things I'd check (other than above):
1. Tire pressure (I run 32 front 38 rear. Thats what i prefer. Factory IIRC is 30/36)
2. Tire cupping. In my experience, a cupp'd front tire will also cause wobble.
3. Fall a way. Set it tighter than the manual, just don't crush the bearings.
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Thread Starter
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Advanced
Joined: Aug 2016
Posts: 99
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From: Renton, WA
Depends on the wallow....
The swing arm is ultimately rubber mounted and that rear mount can only withstand ~ 100lbs of lateral force. Take a 600lb+ bike leaned over in a corner it should be fine. Until you hit a bump. Once that swing arm moves up, the mount can move laterally. This causes the rear tire to point one direction while the front is pointing another.
A rear stabilizer like a Sputhe or true-trak will fix this by not allowing the lateral movement to happen. FYI, true-track won't sell just a rear. Last I remember Sputhe will.
Not saying this is the problem in your specific case. But if you ride hard enough on a bumpy road this will happen. Improperly setup rear suspension will make this situation worse. I don't care if your rear mount has 10 miles on it. The factory rear mount CANNOT withstand the lateral forces and it WILL give.
This is explained in detail from Erik Buell on the FXR design. Which BTW has a rear stabilizer from the factory. Rubber mounted engines should have 3 stabilizing links to prevent lateral movement. One up front, one out back, and one in the center. Factory Dyna has 1 of 3 (under gas tank).
Things I'd check (other than above):
1. Tire pressure (I run 32 front 38 rear. Thats what i prefer. Factory IIRC is 30/36)
2. Tire cupping. In my experience, a cupp'd front tire will also cause wobble.
3. Fall a way. Set it tighter than the manual, just don't crush the bearings.
The swing arm is ultimately rubber mounted and that rear mount can only withstand ~ 100lbs of lateral force. Take a 600lb+ bike leaned over in a corner it should be fine. Until you hit a bump. Once that swing arm moves up, the mount can move laterally. This causes the rear tire to point one direction while the front is pointing another.
A rear stabilizer like a Sputhe or true-trak will fix this by not allowing the lateral movement to happen. FYI, true-track won't sell just a rear. Last I remember Sputhe will.
Not saying this is the problem in your specific case. But if you ride hard enough on a bumpy road this will happen. Improperly setup rear suspension will make this situation worse. I don't care if your rear mount has 10 miles on it. The factory rear mount CANNOT withstand the lateral forces and it WILL give.
This is explained in detail from Erik Buell on the FXR design. Which BTW has a rear stabilizer from the factory. Rubber mounted engines should have 3 stabilizing links to prevent lateral movement. One up front, one out back, and one in the center. Factory Dyna has 1 of 3 (under gas tank).
Things I'd check (other than above):
1. Tire pressure (I run 32 front 38 rear. Thats what i prefer. Factory IIRC is 30/36)
2. Tire cupping. In my experience, a cupp'd front tire will also cause wobble.
3. Fall a way. Set it tighter than the manual, just don't crush the bearings.
Road Master
Joined: Jun 2013
Posts: 1,181
Likes: 98
From: north of the south pole
i replaces the rear motor mount at the same time as the front. About 50 miles or less ago. Guess I forgot to say that part.
Ive also had the dealer check the balance and wheel bearings already.
Im gonna be taking it on Saturday to have them see if they can figure it out. They mentioned doing a steering head adjustment again. Which maybe I did it wrong all 10 times I tried it. So will see what they come up with.