The Spares Company
Club Shop/Regalia
Parent Website
Contact Officials
Machine Registrar
Club Secretary
Membership Secretaries
MPH Editor and Forum Administrator.
Section Newsletters
Technical Databases
Photos
Home
What's new
Latest activity
Forums
New posts
What's new
New posts
Latest activity
Information
Bike Modifications
Machine Data Services
Manufacturers Manuals
Spare Parts Listings
Technical Diagrams
Whitakerpedia (Vincent Wiki)
The Club
MPH Material Archive
Flogger's Corner
Obituaries
VOC Sections
Local Sections
Local Section Newsletters
Miscellaneous
Club Assets
Club History
Club Rules
Machine Data Services
Meeting Documents
Miscellaneous
Essential Reading
Magazine/Newspaper Articles/Letters
Adverts and Sales Brochures
The Mighty Garage Videos
Bikes For Sale (Spares Company)
Log in
Register
What's new
New posts
Menu
Log in
Register
Install the app
Install
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
M
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="timetraveller" data-source="post: 158587" data-attributes="member: 456"><p>With the latest batch of 14 being sent out now I have sold nearly 300 of the JE stems. DavidD has also sold several his own design. Of the ones I have supplied so far everyone who has them is impressed by the improvement in handling and comfort. BUT could I guarantee that a speed wobble could never occur? NO. The reason is that a few years ago, in this thread as far as I remember, someone showed a series of videos of modern bikes racing and developing speed wobbles. If state of the art modern bikes can do it then I do not believe anyone could guarantee that a speed wobble could never occur. Incidentally, two terms are used in this context, speed wobble and tank slapper. What I got into at Cadwell many years ago was a tank slapper. By that I mean the front end oscillated from side stop to side stop at about ten times a second. There was no way of even holding on the handlebars, never mind accelerating out of it. Speed wobbles, as far as I understand, are gentler affairs wherein the rider might be able to hang on but the bike itself weaves violently from side to side. It is still capable of throwing the rider off. The pictures of the modern bikes that I recall seemed to be more of the latter than the former.</p><p></p><p>Even before this last batch of modified steering heads has been fully distributed I have so much more interest that I have ordered another ten to be made. Please note that it is not just replacing the steering head. I provide the parts for the Greg Brillus modification of putting two ball races at each side of the lower link, rather than Oilite bushes, different front suspension springs and different front suspension dampers, AVO with longer lower eyebolts if they come from me. If one wants the best safety and comfort then I believe it is wise to go for the whole kit.</p><p>The steering damper for the JE kit was developed after an English racer on a twin was so impressed by the new handling that he raced without any form of steering damper. He eventually crashed and when I heard of this I designed the hydraulic steering damper kit specifically to fit the JE stems. One other person was so impressed by those that he asked could I design a similar system for the standard front end. I have done that and have sold several tens but for maximum benefit I think that the whole modification is preferable. And I do this for no profit so that is not a sales pitch.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 158587, member: 456"] With the latest batch of 14 being sent out now I have sold nearly 300 of the JE stems. DavidD has also sold several his own design. Of the ones I have supplied so far everyone who has them is impressed by the improvement in handling and comfort. BUT could I guarantee that a speed wobble could never occur? NO. The reason is that a few years ago, in this thread as far as I remember, someone showed a series of videos of modern bikes racing and developing speed wobbles. If state of the art modern bikes can do it then I do not believe anyone could guarantee that a speed wobble could never occur. Incidentally, two terms are used in this context, speed wobble and tank slapper. What I got into at Cadwell many years ago was a tank slapper. By that I mean the front end oscillated from side stop to side stop at about ten times a second. There was no way of even holding on the handlebars, never mind accelerating out of it. Speed wobbles, as far as I understand, are gentler affairs wherein the rider might be able to hang on but the bike itself weaves violently from side to side. It is still capable of throwing the rider off. The pictures of the modern bikes that I recall seemed to be more of the latter than the former. Even before this last batch of modified steering heads has been fully distributed I have so much more interest that I have ordered another ten to be made. Please note that it is not just replacing the steering head. I provide the parts for the Greg Brillus modification of putting two ball races at each side of the lower link, rather than Oilite bushes, different front suspension springs and different front suspension dampers, AVO with longer lower eyebolts if they come from me. If one wants the best safety and comfort then I believe it is wise to go for the whole kit. The steering damper for the JE kit was developed after an English racer on a twin was so impressed by the new handling that he raced without any form of steering damper. He eventually crashed and when I heard of this I designed the hydraulic steering damper kit specifically to fit the JE stems. One other person was so impressed by those that he asked could I design a similar system for the standard front end. I have done that and have sold several tens but for maximum benefit I think that the whole modification is preferable. And I do this for no profit so that is not a sales pitch. [/QUOTE]
Insert quotes…
Verification
What was Mr Irving's Christian Name?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
M
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top