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)
Carburettor choices
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="Robert Watson" data-source="post: 127850" data-attributes="member: 38"><p>I see people using the chokes on the original carbs and often wonder why they bother. </p><p>Unlike perhaps a choke on say an AFB four barrel (American car stuff) which is like a big butterfly across the whole intake, the chokes on our original carbs are a slide which goes down in the middle of the throttle slide. So I see people just say, Oh it needs just a bout 1/4 choke and a closed or slightly open throttle. Unless you open the throttle slide at least 3/4 of the way the choke is just hidden up in the throttle slide. To have any effect at a small throttle opening the choke must be dropped down to the bottom to have the desired effect of choking off some of the air flow, thereby as the intake stroke still pulls the same amount of air, the velocity of the air must increase thereby sucking more fuel from the pilot circuit. </p><p></p><p>Mikunis on the other hand have a small fuel reservoir with a jet in the bottom. When "choking" these you actually lift the plunger allowing the fuel to flow directly into the intake path thereby enrichening the mixture. In fact these are called enricheners as opposed to chokes.</p></blockquote><p></p>
[QUOTE="Robert Watson, post: 127850, member: 38"] I see people using the chokes on the original carbs and often wonder why they bother. Unlike perhaps a choke on say an AFB four barrel (American car stuff) which is like a big butterfly across the whole intake, the chokes on our original carbs are a slide which goes down in the middle of the throttle slide. So I see people just say, Oh it needs just a bout 1/4 choke and a closed or slightly open throttle. Unless you open the throttle slide at least 3/4 of the way the choke is just hidden up in the throttle slide. To have any effect at a small throttle opening the choke must be dropped down to the bottom to have the desired effect of choking off some of the air flow, thereby as the intake stroke still pulls the same amount of air, the velocity of the air must increase thereby sucking more fuel from the pilot circuit. Mikunis on the other hand have a small fuel reservoir with a jet in the bottom. When "choking" these you actually lift the plunger allowing the fuel to flow directly into the intake path thereby enrichening the mixture. In fact these are called enricheners as opposed to chokes. [/QUOTE]
Insert quotes…
Verification
What was Mr Vincent's Christian Name?
Post reply
Home
Forums
Forums: Public Access
General Chat (Vincent Related)
Carburettor choices
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