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
Air Fuel Gauge 02 Sensor Lambda Sensor
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="Magnetoman" data-source="post: 107286" data-attributes="member: 2806"><p>That's not quite accurate. If the AFR reading were, say, 11.0 at full throttle with a 300 jet, and I wanted it to be 12.0, the engine would need 11/12 91.5% of the fuel. That new amount of fuel would be supplied by a 275 jet (0.915x300=275) so I would know before my next run that by swapping for either a 270 or 280 I would get 12.2 or 11.8.</p><p></p><p>If when pulling away there was a slight hesitation that felt like it might be too rich, is the cause the cutaway or the pilot circuit? An AFR meter would help address that faster than simple trial and error. Knowing the AFR from the pilot circuit at idle would let me know if it already was fairly lean, or if I could lean it somewhat. If the latter, I could set it to have a new, lean, AFR and see if that cured the hesitation. If it didn't, then I'd know the cutaway was the culprit.</p><p></p><p>Bouncing down the road things don't necessarily work to many significant digits of precision, and not all Amals patiently wait while you adjust their settings, but the point is that having actual AFR readings certainly reduces the amount of trial and error.</p></blockquote><p></p>
[QUOTE="Magnetoman, post: 107286, member: 2806"] That's not quite accurate. If the AFR reading were, say, 11.0 at full throttle with a 300 jet, and I wanted it to be 12.0, the engine would need 11/12 91.5% of the fuel. That new amount of fuel would be supplied by a 275 jet (0.915x300=275) so I would know before my next run that by swapping for either a 270 or 280 I would get 12.2 or 11.8. If when pulling away there was a slight hesitation that felt like it might be too rich, is the cause the cutaway or the pilot circuit? An AFR meter would help address that faster than simple trial and error. Knowing the AFR from the pilot circuit at idle would let me know if it already was fairly lean, or if I could lean it somewhat. If the latter, I could set it to have a new, lean, AFR and see if that cured the hesitation. If it didn't, then I'd know the cutaway was the culprit. Bouncing down the road things don't necessarily work to many significant digits of precision, and not all Amals patiently wait while you adjust their settings, but the point is that having actual AFR readings certainly reduces the amount of trial and error. [/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
Air Fuel Gauge 02 Sensor Lambda Sensor
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