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
Modified Steering Stem
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="davidd" data-source="post: 107587" data-attributes="member: 1177"><p>9.5 Lbs. per inch for the inner spring. I have the free length as 15.3".</p><p></p><p></p><p></p><p>I used inner reverse wound springs on the rear. They were short and worked on the same principle that you are shooting for. The spring manufacturer can design them to work well in the outer spring without any rattling. I stopped working on the rear springs around 2002 because I decided to go with a coil overs. I did look at using progressive springs on the front and also short die springs. The big impediment was that the spring had to hold up you and the bike at the right pre load, say 200 lbs./in, which uses up an inch of travel and then within the remaining 2" hit 600 lbs. to prevent bottoming out. It turns out that it really cannot be done well either by a straight rate spring or a progressive spring. (It is a little easier on the rear due to the small amount of extra travel.) </p><p></p><p>I was unable to find a good spring rate for the stock springs. My short springs work well on the street and track, but all the spring rates seem to be too soft or too harsh and it is hard to find a sweet spot. Thus, I went the same way I did on the rear and turned to a front coil over. The front coil over seems easier to adjust for good springing. I think this is due to the motion ratio of the lower link mount and the angle correction factor of the shock, but it is a little above my pay grade. </p><p></p><p>I certainly hope that a good rate for the stock spring boxes can be found.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 107587, member: 1177"] 9.5 Lbs. per inch for the inner spring. I have the free length as 15.3". I used inner reverse wound springs on the rear. They were short and worked on the same principle that you are shooting for. The spring manufacturer can design them to work well in the outer spring without any rattling. I stopped working on the rear springs around 2002 because I decided to go with a coil overs. I did look at using progressive springs on the front and also short die springs. The big impediment was that the spring had to hold up you and the bike at the right pre load, say 200 lbs./in, which uses up an inch of travel and then within the remaining 2" hit 600 lbs. to prevent bottoming out. It turns out that it really cannot be done well either by a straight rate spring or a progressive spring. (It is a little easier on the rear due to the small amount of extra travel.) I was unable to find a good spring rate for the stock springs. My short springs work well on the street and track, but all the spring rates seem to be too soft or too harsh and it is hard to find a sweet spot. Thus, I went the same way I did on the rear and turned to a front coil over. The front coil over seems easier to adjust for good springing. I think this is due to the motion ratio of the lower link mount and the angle correction factor of the shock, but it is a little above my pay grade. I certainly hope that a good rate for the stock spring boxes can be found. David [/QUOTE]
Insert quotes…
Verification
What was Mr Vincent's Christian Name?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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