Fxr still kicking my butt
Thread Starter
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Stellar HDF Member
Joined: Mar 2007
Posts: 2,120
Likes: 192
From: Lakeland, FL
Fxr still kicking my butt
Not a new problem, but I cant find it. 94 fxr. It has about 39k miles, 1k on a bottom up rebuild of the engine.
It vibrates.
At 4k, its unbearable, but its not too bad under that, and above 4500 it smoothed out again.
it has new stabilizer links, front mount, isolators, bearing kit in the swingarm, compensator, primary chain shoe, inner primary bearing, clutch hub bearing and probably more I cant think of at the moment.
its not the transmission. I removed the stock trans and swapped it for a 92 with no change. Ive aligned the primary chain. My engine and trans appear to be aligned. I can remove my inner primary and reinstall it with no force.
when I put the engine in after the rebuild, it had a buzz in the bars at 4k. It was fine as far as Im concerned. One afternoon, I started the bike up and heard what sounded like the primary chain slapping around loose, so I adjusted the chain and clutch by the book. That was when the vibe started. I cannot seem to get rid of it. The bike tracks straight. Ive set the bike level and set the top link so the bolt just drops in, but it wont go away.
Im 99% sure its not the engine. Im sure its not the trans.
Ive read that poor drivetrain alignment can cause a vibration. How do? When i set the top link, I have bike on the lift, back wheel off the ground and a small jack under the left leg to level it. Does it need to be on the floor? Im planning on riding it cross country in a month. I need to get this thing figured out.
I appreciate any help!!!
It vibrates.
At 4k, its unbearable, but its not too bad under that, and above 4500 it smoothed out again.
it has new stabilizer links, front mount, isolators, bearing kit in the swingarm, compensator, primary chain shoe, inner primary bearing, clutch hub bearing and probably more I cant think of at the moment.
its not the transmission. I removed the stock trans and swapped it for a 92 with no change. Ive aligned the primary chain. My engine and trans appear to be aligned. I can remove my inner primary and reinstall it with no force.
when I put the engine in after the rebuild, it had a buzz in the bars at 4k. It was fine as far as Im concerned. One afternoon, I started the bike up and heard what sounded like the primary chain slapping around loose, so I adjusted the chain and clutch by the book. That was when the vibe started. I cannot seem to get rid of it. The bike tracks straight. Ive set the bike level and set the top link so the bolt just drops in, but it wont go away.
Im 99% sure its not the engine. Im sure its not the trans.
Ive read that poor drivetrain alignment can cause a vibration. How do? When i set the top link, I have bike on the lift, back wheel off the ground and a small jack under the left leg to level it. Does it need to be on the floor? Im planning on riding it cross country in a month. I need to get this thing figured out.
I appreciate any help!!!
Seasoned HDF Member
Joined: Dec 2006
Posts: 8,215
Likes: 6,121
From: Black Hills
Be extremely careful with that inner primary. '94 is one off and very hard to find, we had a beat '94 FXR come in with the primary and trans broken from doing wheelies. The owner had to pay over $900 for a OEM inner - no one makes that one aftermarket. Good luck finding your vibration, it can be a needle in a haystack sometimes.
Last edited by rizzo; Jun 6, 2021 at 12:01 PM.
Thread Starter
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Stellar HDF Member
Joined: Mar 2007
Posts: 2,120
Likes: 192
From: Lakeland, FL
That reminds me, I replaced the clutch hub a week or so ago. I was going to check the bearing and went to hard with the clutch tool. I broke the hub and pressure plate, so those are new too.
Im sure its something Im doing wrong. I feel like its the alignment, but I just cant get it.
Im sure its something Im doing wrong. I feel like its the alignment, but I just cant get it.
Seasoned HDF Member
Joined: Apr 2011
Posts: 6,185
Likes: 2,134
From: W. Texas
Not a new problem, but I cant find it. 94 fxr. It has about 39k miles, 1k on a bottom up rebuild of the engine.
It vibrates. That was when the vibe started. I cannot seem to get rid of it. The bike tracks straight. Ive set the bike level and set the top link so the bolt just drops in, but it wont go away.!
It vibrates. That was when the vibe started. I cannot seem to get rid of it. The bike tracks straight. Ive set the bike level and set the top link so the bolt just drops in, but it wont go away.!
Not sure but I had a vib I chased for 18 months off and on.
It finally turned out to be the rivets that hold the gear and clutch basket together were loose.
The vib most annoying to me was at 2000 to 2400.
After getting the clutch basket replaced I noted the buzz I had at 3800 - 4300 rpms was gone as well.
Might be worth cking Good Luck WP
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
Likes: 7,172
From: Oxford, Nc
Holding it at 4,000 rpm going down the road, does pulling in the clutch and letting the engine freewheel for a moment, change that vibration any?
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Club Member
Joined: Mar 2009
Posts: 66,110
Likes: 51,396
From: Niles Canyon Ca.
What I'd check, the hub or chain itself, when they stretch & get sloppy the vibration goes way up.
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Thread Starter
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Stellar HDF Member
Joined: Mar 2007
Posts: 2,120
Likes: 192
From: Lakeland, FL
I
Not sure but I had a vib I chased for 18 months off and on.
It finally turned out to be the rivets that hold the gear and clutch basket together were loose.
The vib most annoying to me was at 2000 to 2400.
After getting the clutch basket replaced I noted the buzz I had at 3800 - 4300 rpms was gone as well.
Might be worth cking Good Luck WP
Not sure but I had a vib I chased for 18 months off and on.
It finally turned out to be the rivets that hold the gear and clutch basket together were loose.
The vib most annoying to me was at 2000 to 2400.
After getting the clutch basket replaced I noted the buzz I had at 3800 - 4300 rpms was gone as well.
Might be worth cking Good Luck WP
Thread Starter
|
Stellar HDF Member
Joined: Mar 2007
Posts: 2,120
Likes: 192
From: Lakeland, FL
What am I looking for with the chain? I've had it on and off, and it seems ok. Most of the symptoms I have point to the primary, but I haven't found a smoking gun, yet.