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
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| Subject: | 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 <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" <butcher43@att.net>
>
>
> 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
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| Subject: | 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 <crouton@well.com> 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" <butcher43@att.net>
> >
> >
> > 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
> >
> >
> >
> >
> >
> >
> >
> >
>
>
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