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: 75858" data-attributes="member: 1177"><p>Eddy,</p><p></p><p>The digressive springs like the short spring or the steering stem mod should de-link the brakes and suspension. </p><p></p><p>On the use of Thorntons on the rear, no one I know has had a problem with the rear damper. I have to assume there was air in the shock and I am always very careful when I change the oil to top up the shock without air.</p><p></p><p>On extending the rear suspension. The Reg Bolton mod to create ground clearance and steepen the rake angle has been used successfully by me, Carleton Palmer and the Horners. It is difficult to see why Chris should run across such a problem, but I am inclined to believe that something else was also at play that may have caused a problem. </p><p></p><p>On a longer damper, see above. I believe that Horners used a longer damper on their Goodwood Rapide to get the faster handling needed for a competitive edge. It may not be greeted enthusiastically because most street riders do not feel the need.</p><p></p><p>On Nigel using Thornton springs on the rear. I did this and had the springs cock in the spring boxes. While not causing the bike to crash, it was disconcerting and caused me to develop my own Thornton coil over. Now that Thornton has offered them, I will use the coil over Thornton on the rear. I think for touring the springing offered on the Series D shock is the best, but Thornton will not do the things that Works is happy to do and I don't see a solution to that problem other than making sure your spring boxes do not cock.</p><p></p><p>On fully sprung seats, it is the best way to go for both solo and double. The Factory did so on Flash prototypes and the TT Flashes with no downside reported. </p><p></p><p>On interesting party tricks, at Pat Manning's annual party there are usually a dozen or so Vincent owners. With lots of bikes around I take one of the bike with stock Girdraulics and grab the grips and pull it up to full extension. At full extension, I grab the front brake. As long as I hold the brake the Girdraulic is seized. I climb on the bike and rest my knee on the oil cap. I then bounce up and down with all my weight over the handlebars. Nothing happens. There is no movement of the suspension. I then release the front brake and the fork finally drops from full extension. This has surprised many veteran Vincent men. Tom Kerr once dropped to his knees and said "Do that again." I then do the same with a Vincent with my short springs. I heft up the front to full extension, grab the brake and it unceremoniously drops back to its normal position. Even if it is a party trick, I want my front end to work at least as well as all the other non Vincents in the driveway.</p><p></p><p>Here is a photo of Carleton's two championship racers at Deland, Florida. Note that the Flash on the right has the Reg Bolton extension plate bolted on as well as a set of Thornton rear springs. Look at the angle of the RFM and the rake angle of the fork and I think the changed attitude of the bike is obvious. He won three national championships with this bike alone.</p><p></p><p>[ATTACH=full]15394[/ATTACH] </p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 75858, member: 1177"] Eddy, The digressive springs like the short spring or the steering stem mod should de-link the brakes and suspension. On the use of Thorntons on the rear, no one I know has had a problem with the rear damper. I have to assume there was air in the shock and I am always very careful when I change the oil to top up the shock without air. On extending the rear suspension. The Reg Bolton mod to create ground clearance and steepen the rake angle has been used successfully by me, Carleton Palmer and the Horners. It is difficult to see why Chris should run across such a problem, but I am inclined to believe that something else was also at play that may have caused a problem. On a longer damper, see above. I believe that Horners used a longer damper on their Goodwood Rapide to get the faster handling needed for a competitive edge. It may not be greeted enthusiastically because most street riders do not feel the need. On Nigel using Thornton springs on the rear. I did this and had the springs cock in the spring boxes. While not causing the bike to crash, it was disconcerting and caused me to develop my own Thornton coil over. Now that Thornton has offered them, I will use the coil over Thornton on the rear. I think for touring the springing offered on the Series D shock is the best, but Thornton will not do the things that Works is happy to do and I don't see a solution to that problem other than making sure your spring boxes do not cock. On fully sprung seats, it is the best way to go for both solo and double. The Factory did so on Flash prototypes and the TT Flashes with no downside reported. On interesting party tricks, at Pat Manning's annual party there are usually a dozen or so Vincent owners. With lots of bikes around I take one of the bike with stock Girdraulics and grab the grips and pull it up to full extension. At full extension, I grab the front brake. As long as I hold the brake the Girdraulic is seized. I climb on the bike and rest my knee on the oil cap. I then bounce up and down with all my weight over the handlebars. Nothing happens. There is no movement of the suspension. I then release the front brake and the fork finally drops from full extension. This has surprised many veteran Vincent men. Tom Kerr once dropped to his knees and said "Do that again." I then do the same with a Vincent with my short springs. I heft up the front to full extension, grab the brake and it unceremoniously drops back to its normal position. Even if it is a party trick, I want my front end to work at least as well as all the other non Vincents in the driveway. Here is a photo of Carleton's two championship racers at Deland, Florida. Note that the Flash on the right has the Reg Bolton extension plate bolted on as well as a set of Thornton rear springs. Look at the angle of the RFM and the rake angle of the fork and I think the changed attitude of the bike is obvious. He won three national championships with this bike alone. [ATTACH=full]15394[/ATTACH] David [/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
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