Talk:Speed wobble

message: We can have articles link here, but lets not pretend that "Speed wobble" is a popularly used term (unless it is?) AdamBiswanger1 03:32, 14 July 2006 (UTC)
thread_title: Speed Wobble

message: The article says: It can occur with motorcycles, skateboards, bicycles or in theory any vehicle with a single steering pivot point and a sufficient amount of freedom of the steered wheel; this does not include automobiles..
Googling for 'shimmy death-wobble' will produce plenty of webpages describing similar things in cars. Also the article Hunting (engineering) mentions this. So why this remark? -- Han-Kwang 11:08, 15 July 2006 (UTC)
replies: text: Nutation requires 2 degrees of freedom orthogonal to the spin axis. Car wheels do not have this freedom. Jurien 01:07, 17 July 2006 (UTC)
replies: text: In theory cars may not have such degree of freedom, but in practice steering and suspension components are not indefinitely rigid, due to the use of elastic bushings. Additionally wear and tear may introducer play in the system. A "death wobble" in a car or more commonly in a truck may occur when steering components e.g. steering box remain rigid, but knuckles are allowed to rotate left and right a bit, sufficient to steer the wheels. Then an oscillation may occur due to the wheels steering in one direction and then due to the force from tires flexing the system turning to the other direction, which in turn causes knuckle to rotate back and cycle continues. Mibars (talk) 15:00, 24 February 2021 (UTC)
thread_title: Speed wobble in cars?

message: It's not clear from the article what the difference is between a death wobble and a shimmy. Han-Kwang 11:08, 15 July 2006 (UTC)
replies: text: Thanks for the feedback, I'll make it clearer. Jurien 01:07, 17 July 2006 (UTC)
replies: text: When I wrote my comment I didn't realize that you were in the middle of a rewrite. I saw today after you bolded various phrases that it was already there, just not under the heading Shimmy and death wobble where I expected it. I'm not confident to change the article without introducing errors, but I suggest that you start the section Shimmy and death wobble by explaining in simple language what the difference between the two is, preferably without technical terms such as gimbal, nutation, and pivot. After that you can go into more detail. I must say though that I find it hard to follow the article despite a PhD degree in (chemical) physics. A simple picture of the two cases would help tremendously, for example with a front view of the bike and a top view, with in two different colors the different extreme orientations of the bike plus its rider.  Han-Kwang 13:46, 17 July 2006 (UTC)
replies: text: Good idea. This wiki entry is very much under development.--Jurien 04:35, 18 July 2006 (UTC)
thread_title: Death wobble vs. shimmy?

message: In the article, you write, "In 2002 Harley-Davidson was sued in a class action suit for injuries associated with high speed wobbles, also known as "tank slappers" because of the tendency of handle bars to move towards the tank."  
Are you sure?  Because I am pretty sure that is not true.  If you do not have facts to back that up, I would remove that statement from the article.
:I'll put a  on it AdamBiswanger1 14:56, 10 August 2006 (UTC)
replies: text: No objections from me AdamBiswanger1 18:40, 17 August 2006 (UTC)
thread_title:  An Inaccuracy.   

message: This article is difficult to read, poorly worded in some cases, and is not clear to someone unfamiliar with the subject. Also, I think that it goes too in-depth for one article, as it should be a summary, not an in-depth article. Maybe putting the two primary sections into separate articles?
Jenrzzz (talk) 06:39, 12 December 2007 (UTC)
thread_title: Cleanup

message: The objection has been raised that
:a tank-slapper is something completely different (kickback) and has completely different causes; it has nothing to do with oscillation or resonance. -Cancun771 08:03, 28 December 2009
I'm away from my desk and so do not have my texts, but I can find online [this article] from Tony Foale that suggests strongly to me that a tank slapper is merely a highly developed wobble:
:This really matters, because wobbles can be caused or greatly increased by this misalignment... We have all experienced this to some degree, sometimes it amounts to nothing more than a minor handle bar shake, but in far too many cases it can develop into a frightening tank slapper with occasional fatal results.
Are there other sources that support or refute this claim? -AndrewDressel (talk) 18:54, 27 December 2009 (UTC)
replies: text: *  <P>See also: , , , <P>Unfortunately, some people edit Wikipedia as if it were Urban Dictionary where you can just throw in whatever you heard your friend say. --Dbratland (talk) 19:17, 27 December 2009 (UTC)
thread_title:  Wobble vs tank slapper