The Wobble, A Comprehensive Look into Cause, Effect, and Fix
Thread Starter
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Intermediate
Joined: Aug 2010
Posts: 27
Likes: 3
From: Chantilly VA
Feelings not hurt. Just re-assessed value and if written well enough for reasonable understanding and usefulness.
Road Captain
Joined: Aug 2011
Posts: 575
Likes: 4
From: SouthWestern Ontario
LoneGrey - It was disappointing when the original post was removed. I hadn't yet taken the time to absorb the content and had planned to revisit your thread. Thank you for the re-post and for sharing your thoughts on such a complex subject. A forum such as this should welcome and value the knowledge and years of experience offered.
I agree that volumes could be written but for all practical purposes, have always thought that a trouble shooting type flow chart could be developed, to help the layman minimize time and cost while finding a practical solution to their particular root cause of wobble.
Most folks won't bother reading what they don't understand and will throw their money in the wrong direction trying for a quick fix. Just a thought.
I agree that volumes could be written but for all practical purposes, have always thought that a trouble shooting type flow chart could be developed, to help the layman minimize time and cost while finding a practical solution to their particular root cause of wobble.
Most folks won't bother reading what they don't understand and will throw their money in the wrong direction trying for a quick fix. Just a thought.
Tourer
Joined: Apr 2014
Posts: 288
Likes: 3
From: UK
1. Vehicle (wheel) alignment is not an underdamped source. It’s a cyclic stress source. The misalignment creates lateral forces that acton the swing arm and rear tire (neither of which are perfectly rigid-- both have damping issues). As the frequency, which increases with speed, approaches the natural frequency of your steering/suspension system, the wobble begins. These small lateral forces can produce very large oscillations within seconds and can progress from mild to violent, uncontrollable gyrations that have taken riders down.
There has to be a combination of factors that lead the bike to resonate in this way. I believe the vast majority of bike have no problems at all but Harley have not helped themselves by not getting to grips with this early on. Be it a tolerance stack up or something as simple as the quality of the manufactured parts something causes the bikes to wobble and some not. I absolutely believe the fundamental design of the mount system is sound.
I also believe there is enough expertise on this forum to do a much more in depth study of the problem from the ground up rather than just regurgitating internet mythology and aftermarket parts sales pitches.
Last edited by 4_stroke; Aug 22, 2014 at 03:05 AM.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Cruiser
Joined: Aug 2012
Posts: 100
Likes: 11
From: Hoozier
Great stuff. Mr. brown's article and the resulting discussion convinced me to purchase a True-Track, and I'm glad I did. LoneGrey's post is equally enlightening to me. Thank you sir for sharing you research.
Road Master
Joined: Oct 2013
Posts: 763
Likes: 7
From: New Hampshire
The original post was removed, rewritten, and reposted. Despite double checking spelling and grammar, the HD forum website viewing and editing tools seems to be my personal challenge to get proper spacing between words, bullet indenture, and paragraphs. I view the post and it's correct. I save it and some words run together. Sorry 'bout that.
Seasoned HDF Member
Joined: Mar 2009
Posts: 24,735
Likes: 9,244
From: Snow Hill, NC
Funny, promote free speech, but you wont even let someone post something here?
IMHO if ya don't like it, move on, why pick at the guy (he may be english challenged like many of us french types up here in the great white north LOL). Not all of us are computer/literary geniuses etc. I for one thank him for trying to share his experience which is what I though was the reason for this site?????
It didn't look like it violated any of the terms of use to me, but I am not a legal eagle either. Just a canuck. :-)
IMHO if ya don't like it, move on, why pick at the guy (he may be english challenged like many of us french types up here in the great white north LOL). Not all of us are computer/literary geniuses etc. I for one thank him for trying to share his experience which is what I though was the reason for this site?????
It didn't look like it violated any of the terms of use to me, but I am not a legal eagle either. Just a canuck. :-)
Road Warrior
Joined: Jan 2012
Posts: 1,392
Likes: 21
From: Delaware
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