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
Cam Identification
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: 168617" data-attributes="member: 1177"><p>I have seen X1 90, 108, and 112. I do not know what the numbers mean. It would be easy to say it is the LSA, but 90 is very tight as the MK2 is generally around 97 at 0.050" lift. I have degreed a pair of Andrews cams that had a 0.470 lift on the Ex valve and, oddly, 0.459" lift on the intake.</p><p></p><p>To get this lift on an Andrews cam you have to grind the base circle. I don't know if it was Andrews that ground the base circle, but it looked like a nice job. It was not perfect, but I suspect it is difficult to make two cams match exactly when grinding the base circle to make more lift. The LSA on these ground cams was 118.75. The exhaust duration was 0,275". I have been referring to the long cam for these figures as they were at hand. I have been using 0.50" to measure.</p><p></p><p>I would have thought that when Megacycle purchased Andrews cams that they abandoned Andrews' numbering system, but I have never discussed it with them.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 168617, member: 1177"] I have seen X1 90, 108, and 112. I do not know what the numbers mean. It would be easy to say it is the LSA, but 90 is very tight as the MK2 is generally around 97 at 0.050" lift. I have degreed a pair of Andrews cams that had a 0.470 lift on the Ex valve and, oddly, 0.459" lift on the intake. To get this lift on an Andrews cam you have to grind the base circle. I don't know if it was Andrews that ground the base circle, but it looked like a nice job. It was not perfect, but I suspect it is difficult to make two cams match exactly when grinding the base circle to make more lift. The LSA on these ground cams was 118.75. The exhaust duration was 0,275". I have been referring to the long cam for these figures as they were at hand. I have been using 0.50" to measure. I would have thought that when Megacycle purchased Andrews cams that they abandoned Andrews' numbering system, but I have never discussed it with them. 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
Cam Identification
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