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
General Chat (Vincent Related)
Grey Flash: Motorcycles that Matter
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="Little Honda" data-source="post: 106509" data-attributes="member: 667"><p>Some years ago, I had a friend´s Comet for some time. It was an original "C"-Comet. When it topped at 75mph, I asked a friend, to follow in his car and tell me his speedo readings afterwards. He confirmed my</p><p>readings, stating, that his Moto Guzzi Falcone did the same speed with a sidecar on!</p><p>So, I remembered, that this speed was also achieved by my first motorcycle, a 1952 NSU Max, 250cc, 18hp.</p><p>And I decided, to find out why.</p><p>Next step was, to fit a bicycle speedo, carefully adjusted. The Comet´s engine was in good trim, everything</p><p>well tuned, nice plug face, etc. So I started on a sunny afternoon on a flat, free motorway nearby and revved it</p><p>in 1st, until it did not accelerate, anymore, remembering the speed, the same in second and third. In fourth,</p><p>it topped at 75 with me sitting up. I stopped and noted the figures on a sheet of paper and went back home.</p><p>With the figures from Paul Richardsons book, I calculated the engine speeds in each gear and found out, that,</p><p>with works sprockets, it stayed 1000rpm below max. in fourth gear, which is app. 17 - 18 hp at the rear wheel.</p><p>So I fitted a 52 teeth sprocket, which was 4 teeth over standard.</p><p>Same day, same road, same conditions, and it achieved 90 mph, exactly works figures!</p><p>I do not torture my bikes, but they must deliver works standards!</p></blockquote><p></p>
[QUOTE="Little Honda, post: 106509, member: 667"] Some years ago, I had a friend´s Comet for some time. It was an original "C"-Comet. When it topped at 75mph, I asked a friend, to follow in his car and tell me his speedo readings afterwards. He confirmed my readings, stating, that his Moto Guzzi Falcone did the same speed with a sidecar on! So, I remembered, that this speed was also achieved by my first motorcycle, a 1952 NSU Max, 250cc, 18hp. And I decided, to find out why. Next step was, to fit a bicycle speedo, carefully adjusted. The Comet´s engine was in good trim, everything well tuned, nice plug face, etc. So I started on a sunny afternoon on a flat, free motorway nearby and revved it in 1st, until it did not accelerate, anymore, remembering the speed, the same in second and third. In fourth, it topped at 75 with me sitting up. I stopped and noted the figures on a sheet of paper and went back home. With the figures from Paul Richardsons book, I calculated the engine speeds in each gear and found out, that, with works sprockets, it stayed 1000rpm below max. in fourth gear, which is app. 17 - 18 hp at the rear wheel. So I fitted a 52 teeth sprocket, which was 4 teeth over standard. Same day, same road, same conditions, and it achieved 90 mph, exactly works figures! I do not torture my bikes, but they must deliver works standards! [/QUOTE]
Insert quotes…
Verification
The Series 'A' Rapide was known as the '********' Nightmare?
Post reply
Home
Forums
Forums: Public Access
General Chat (Vincent Related)
Grey Flash: Motorcycles that Matter
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