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: 79187" data-attributes="member: 1177"><p>Nigel,</p><p></p><p>The reason you like the Girdraulic so much is that it is inclined to extend with hard front braking. You are correct that is is disinclined to bottom out under braking, but it also is disinclined to absorb much of the bump. </p><p></p><p>I designed my modified steering stem not to dive as much as the JE steering stem. Like you, I am a fan of maintaining the attitude of the bike under braking. Having said that, there is nothing wrong with the fork diving under braking, as long as it does not bottom out. Greg Brillus and Martyn Goodwin are quite pleased with the JE stem, so I think they could shed some light on the issue. They have a good idea what spring rates will work on a Comet and a twin with no bottoming. </p><p></p><p>Alternatively, you can try some short springs and adjust your ride height as Martyn described above. That will enhance the forks ability to absorb bumps under hard braking and will provide the same handling improvements. It is not as "foolproof" as the JE stem, which will provide safe handling whether or not the springing is correct. However, the short springs are fine as long as the lower link is parallel to the ground with you sitting on the bike. When using the short springs the fork is still inclined to extending, but it doesn't have the spring power to do it. As a result, the fork will happily go up and down over bumps under hard braking.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 79187, member: 1177"] Nigel, The reason you like the Girdraulic so much is that it is inclined to extend with hard front braking. You are correct that is is disinclined to bottom out under braking, but it also is disinclined to absorb much of the bump. I designed my modified steering stem not to dive as much as the JE steering stem. Like you, I am a fan of maintaining the attitude of the bike under braking. Having said that, there is nothing wrong with the fork diving under braking, as long as it does not bottom out. Greg Brillus and Martyn Goodwin are quite pleased with the JE stem, so I think they could shed some light on the issue. They have a good idea what spring rates will work on a Comet and a twin with no bottoming. Alternatively, you can try some short springs and adjust your ride height as Martyn described above. That will enhance the forks ability to absorb bumps under hard braking and will provide the same handling improvements. It is not as "foolproof" as the JE stem, which will provide safe handling whether or not the springing is correct. However, the short springs are fine as long as the lower link is parallel to the ground with you sitting on the bike. When using the short springs the fork is still inclined to extending, but it doesn't have the spring power to do it. As a result, the fork will happily go up and down over bumps under hard braking. David [/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