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="greg brillus" data-source="post: 98171" data-attributes="member: 597"><p>The 36 pound springs are too weak for a twin, it is the shock absorber that is taking the load, if you remove the shock absorber you will see how easy it is to push the forks up and down. Everyone's thoughts indicate all is well, but the front end is still being inhibited by the shocker. My opinion about this mod with the bearing upgrade is that you need stronger springs than you think, but with less pre-load and a softer shock absorber. Every bike I have done, I have had to chop the springs shorter, or else the front end is "Topped out" regardless of whatever shock absorber you use, and I have always used the longer eye bolts. This Comet I have done now has a pair of the 45 lb springs with 25 mm cut off both, and for now an old original Armstrong shock absorber to allow a softer ride. If a strong shocker is fitted this really stiffens up the fork action, and this has nothing to do with the load carrying capacity of the springs......That is something that needs to be sorted out first, or else the front end will bottom quite easily, even if the cases are shortened. This is almost the same set up I've got on my Rapide except I have a Thornton shocker up front...........I tried a softer spring and found it would bottom out under hard braking..............Just what I have found.............<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 98171, member: 597"] The 36 pound springs are too weak for a twin, it is the shock absorber that is taking the load, if you remove the shock absorber you will see how easy it is to push the forks up and down. Everyone's thoughts indicate all is well, but the front end is still being inhibited by the shocker. My opinion about this mod with the bearing upgrade is that you need stronger springs than you think, but with less pre-load and a softer shock absorber. Every bike I have done, I have had to chop the springs shorter, or else the front end is "Topped out" regardless of whatever shock absorber you use, and I have always used the longer eye bolts. This Comet I have done now has a pair of the 45 lb springs with 25 mm cut off both, and for now an old original Armstrong shock absorber to allow a softer ride. If a strong shocker is fitted this really stiffens up the fork action, and this has nothing to do with the load carrying capacity of the springs......That is something that needs to be sorted out first, or else the front end will bottom quite easily, even if the cases are shortened. This is almost the same set up I've got on my Rapide except I have a Thornton shocker up front...........I tried a softer spring and found it would bottom out under hard braking..............Just what I have found.............:). [/QUOTE]
Insert quotes…
Verification
The Series 'A' Rapide was known as the '********' Nightmare?
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