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
Tuning - Original Comet Carb and LM-1 AFR Meter
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="Tom Gaynor" data-source="post: 13976" data-attributes="member: 4034"><p><strong>Top tuning tips..</strong></p><p></p><p>Don't like the sound of that bent needle - might affect your torque curve, ho, ho. Or not.</p><p>I don't think it'll make any difference.</p><p>Cautionary tale #1: a friend leaned out and leaned out and leaned out a Manx Norton because it kept showing rich. Then it seized. The mag had been failing. So if your experiments direct you a long way away from standard settings, sit down with a beer and consider.</p><p>Cautionary tale #2: my twin had been sooty on the front pot since i got it. It became less black after i replaced the guides (no burnt oil now) but was still black. I had run the entire gamut of different jets, needle settings, everything. Then it occurred to me (and I owe the thought to Sid Biberman) that the one thing I had NOT checked, was the float level on the front carb. Rather than do it properly and make a bottom nut with a tube to check that the level was just below the pilot jet (on a 289, but in fact any Amal) I tilted the carb a little. It was better. I tilted it again. It was transformed. Felt just like a bike with two identical pots. Probably through an accumulation of wear, the flot level was about 1/8" too high. Now I run 180's front and rear, needles in same notch (one above the middle) and same #4 slides. And both plugs look the same. (Which is dark white. Which is good.)</p><p></p><p>Tom</p></blockquote><p></p>
[QUOTE="Tom Gaynor, post: 13976, member: 4034"] [b]Top tuning tips..[/b] Don't like the sound of that bent needle - might affect your torque curve, ho, ho. Or not. I don't think it'll make any difference. Cautionary tale #1: a friend leaned out and leaned out and leaned out a Manx Norton because it kept showing rich. Then it seized. The mag had been failing. So if your experiments direct you a long way away from standard settings, sit down with a beer and consider. Cautionary tale #2: my twin had been sooty on the front pot since i got it. It became less black after i replaced the guides (no burnt oil now) but was still black. I had run the entire gamut of different jets, needle settings, everything. Then it occurred to me (and I owe the thought to Sid Biberman) that the one thing I had NOT checked, was the float level on the front carb. Rather than do it properly and make a bottom nut with a tube to check that the level was just below the pilot jet (on a 289, but in fact any Amal) I tilted the carb a little. It was better. I tilted it again. It was transformed. Felt just like a bike with two identical pots. Probably through an accumulation of wear, the flot level was about 1/8" too high. Now I run 180's front and rear, needles in same notch (one above the middle) and same #4 slides. And both plugs look the same. (Which is dark white. Which is good.) Tom [/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
Tuning - Original Comet Carb and LM-1 AFR Meter
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