---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 02/17/17: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:52 AM - Re: RotaxEngines/Bing carb's alleged altitude compensation (crouton) 2. 11:27 AM - Re: Re: RotaxEngines/Bing carb's alleged altitude compensation (Ken Ryan) ________________________________ Message 1 _____________________________________ Time: 10:52:08 AM PST US From: crouton Subject: RotaxEngines-List: Re: RotaxEngines/Bing carb's alleged altitude compensation Uh, no. Not really. They do a reasonable job up to about 4000ft, but above that the slide lifts the needle out of the jet well and things get really rich. The diaphragm can only do so much. Not to be too hard on the Bings-they, like all carburetors are hoist from the the same petard. Namely that carbs meter fuel to the VOLUME of air and at 7000ft you have left 25% of the atmosphere, ie: oxygen, behind and the carb is still adding fuel based on sea level proportions. The solution is, of course, fuel injection. Creighton Smith Sent from my iPad > On Feb 17, 2017, at 3:03 AM, RotaxEngines-List Digest Server wrote: > > * > > ================================================= > Online Versions of Today's List Digest Archive > ================================================= > > Today's complete RotaxEngines-List Digest can also be found in either of the > two Web Links listed below. The .html file includes the Digest formatted > in HTML for viewing with a web browser and features Hyperlinked Indexes > and Message Navigation. The .txt file includes the plain ASCII version > of the RotaxEngines-List Digest and can be viewed with a generic text editor > such as Notepad or with a web browser. > > HTML Version: > > http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 17-02-16&Archive=RotaxEngines > > Text Version: > > http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-02-16&Archive=RotaxEngines > > > =============================================== > EMail Version of Today's List Digest Archive > =============================================== > > > ---------------------------------------------------------- > RotaxEngines-List Digest Archive > --- > Total Messages Posted Thu 02/16/17: 1 > ---------------------------------------------------------- > > > Today's Message Index: > ---------------------- > > 1. 03:54 PM - Bing Carb Theory of Operation (h&jeuropa) > > > > ________________________________ Message 1 _____________________________________ > > > Time: 03:54:58 PM PST US > Subject: RotaxEngines-List: Bing Carb Theory of Operation > From: "h&jeuropa" > > > The January 2017 and February 2017 issues of EAA Sport Aviation have two articles > by Carol & Brian Carpenter of Rainbow Aviation Services that describe how > our Bing carbs work. The articles have color diagrams that show fuel and air flow. > They really do compensate for altitude by clever design! > > Jim Butcher > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=466313#466313 > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 11:27:26 AM PST US From: Ken Ryan Subject: Re: RotaxEngines-List: Re: RotaxEngines/Bing carb's alleged altitude compensation Would the same be true for the Rotax 914? On Fri, Feb 17, 2017 at 9:50 AM, crouton wrote: > > Uh, no. Not really. > They do a reasonable job up to about 4000ft, but above that the slide > lifts the needle out of the jet well and things get really rich. The > diaphragm can only do so much. > Not to be too hard on the Bings-they, like all carburetors are hoist from > the the same petard. Namely that carbs meter fuel to the VOLUME of air and > at 7000ft you have left 25% of the atmosphere, ie: oxygen, behind and the > carb is still adding fuel based on sea level proportions. > The solution is, of course, fuel injection. > Creighton Smith > > Sent from my iPad > > > On Feb 17, 2017, at 3:03 AM, RotaxEngines-List Digest Server < > rotaxengines-list@matronics.com> wrote: > > > > * > > > > ================================================= > > Online Versions of Today's List Digest Archive > > ================================================= > > > > Today's complete RotaxEngines-List Digest can also be found in either of > the > > two Web Links listed below. The .html file includes the Digest formatted > > in HTML for viewing with a web browser and features Hyperlinked Indexes > > and Message Navigation. The .txt file includes the plain ASCII version > > of the RotaxEngines-List Digest and can be viewed with a generic text > editor > > such as Notepad or with a web browser. > > > > HTML Version: > > > > http://www.matronics.com/digest/digestview.php?Style > 82701&View=html&Chapter 17-02-16&Archive=RotaxEngines > > > > Text Version: > > > > http://www.matronics.com/digest/digestview.php?Style > 82701&View=txt&Chapter 17-02-16&Archive=RotaxEngines > > > > > > =============================================== > > EMail Version of Today's List Digest Archive > > =============================================== > > > > > > ---------------------------------------------------------- > > RotaxEngines-List Digest Archive > > --- > > Total Messages Posted Thu 02/16/17: 1 > > ---------------------------------------------------------- > > > > > > Today's Message Index: > > ---------------------- > > > > 1. 03:54 PM - Bing Carb Theory of Operation (h&jeuropa) > > > > > > > > ________________________________ Message 1 > _____________________________________ > > > > > > Time: 03:54:58 PM PST US > > Subject: RotaxEngines-List: Bing Carb Theory of Operation > > From: "h&jeuropa" > > > > > > The January 2017 and February 2017 issues of EAA Sport Aviation have two > articles > > by Carol & Brian Carpenter of Rainbow Aviation Services that describe > how > > our Bing carbs work. The articles have color diagrams that show fuel and > air flow. > > They really do compensate for altitude by clever design! > > > > Jim Butcher > > > > > > Read this topic online here: > > > > http://forums.matronics.com/viewtopic.php?p=466313#466313 > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.