---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sun 02/19/17: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:32 AM - Re: RotaxEngines-List Digest: 1 Msgs - 02/18/17 (WL) 2. 09:28 AM - Re: RotaxEngines/Bing carb's alleged altitude compensation (h&jeuropa) 3. 10:25 AM - Re: RotaxEngines/Bing carb's alleged altitude compensation (creightonious) ________________________________ Message 1 _____________________________________ Time: 08:32:34 AM PST US From: WL Subject: RotaxEngines-List: RE: RotaxEngines-List Digest: 1 Msgs - 02/18/17 Huh? > -----Original Message----- > From: rotaxengines-list@matronics.com > Sent: Sun, 19 Feb 2017 00:03:00 -0800 > To: rotaxengines-list-digest@matronics.com > Subject: RotaxEngines-List Digest: 1 Msgs - 02/18/17 > > * > > ================================================= > 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 17-02-18&Archive=RotaxEngines > > Text Version: > > > http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 17-02-18&Archive=RotaxEngines > > > =============================================== > EMail Version of Today's List Digest Archive > =============================================== > > > ---------------------------------------------------------- > RotaxEngines-List Digest Archive > --- > Total Messages Posted Sat 02/18/17: 1 > ---------------------------------------------------------- > > > Today's Message Index: > ---------------------- > > 1. 10:02 AM - Re: Re: RotaxEngines/Bing carb's alleged altitude > compensation (Max Free) > > > > ________________________________ Message 1 > _____________________________________ > > > Time: 10:02:29 AM PST US > From: "Max Free" > Subject: RE: RotaxEngines-List: Re: RotaxEngines/Bing carb's alleged > altitude compensation > > > Hi there all. can't read these articles as access is granted only to > members which I'm not and not willing to be... Any chance to get a copy > ? > > > Max Cointe > > mcointe@free.fr > > > F-PLDJ Dyn=99A=C3=A9ro MCR 4S > > Kit #27-2002 1850 heures 912ULSFR/e-Props D100M > > > De : owner-rotaxengines-list-server@matronics.com > [mailto:owner-rotaxengines-list-server@matronics.com] De la part de Ken > Ryan > Envoy=C3=A9 : vendredi 17 f=C3=A9vrier 2017 20:25 > =C3 : rotaxengines-list@matronics.com > Objet : 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 > > 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 > &Chapter 17-02-16&Archive=RotaxEngines> > &View=html&Chapter 17-02-16&Archive=RotaxEngines >> >> Text Version: >> >> http://www.matronics.com/digest/digestview.php?Style=82701 > Chapter 17-02-16&Archive=RotaxEngines> > &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 >> >> > > > - > xEngines-List" rel="noreferrer" target="_blank"> > > http://www.matronics.com/Navigator?RotaxEngines-List > FORUMS - > eferrer" target="_blank"> > http://forums.matronics.com > WIKI - > errer" target="_blank"> > http://wiki.matronics.com > b Site - > -Matt Dralle, List Admin. > rel="noreferrer" target="_blank"> > > http://www.matronics.com/contribution > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 09:28:43 AM PST US Subject: RotaxEngines-List: Re: RotaxEngines/Bing carb's alleged altitude compensation From: "h&jeuropa" The next to last paragraph of the January article explains how the Bing carb compensates for altitude. A 914 operates at manifold pressure of 30 in Hg, or nearly sea level altitude. So it doesn't have the potential mixture problem. I have sent Max a copy of the articles. Jim Butcher Read this topic online here: http://forums.matronics.com/viewtopic.php?p=466432#466432 ________________________________ Message 3 _____________________________________ Time: 10:25:33 AM PST US Subject: RotaxEngines-List: Re: RotaxEngines/Bing carb's alleged altitude compensation From: "creightonious" kenryan wrote: > Would the same be true for the Rotax 914? > > Jim is correct. The 914 is, for continuous power, turbo-normalized and at all non oxygen-sucking altitudes, the carbs see essentially sea level air. Ergo, no going super rich at useful altitudes. > This accounts for the 914's near-universal acceptance in the US where altitudes below 13000 (18000 with oxygen) are available to use. > Creighton > > 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 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 (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 (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: 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 (http://forums.matronics.com/viewtopic.php?p=466313#466313) > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > =================================== > > - > > xEngines-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List > > =================================== > > FORUMS - > > eferrer" target="_blank">http://forums.matronics.com > > =================================== > > WIKI - > > errer" target="_blank">http://wiki.matronics.com > > =================================== > > b Site - > > -Matt Dralle, List Admin. > > rel="noreferrer" target="_blank">http://www.matronics.com/contribution > > =================================== > > > > > > > > > -------- Creighton Smith A 036 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=466435#466435 ------------------------------------------------------------------------------------- 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.