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Mixture control

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rstone4(at)hot.rr.com
Guest

Posted: Fri Sep 29, 2006 7:14 am Post subject: Mixture control

Members,

      I would like to  hear from any of you guys/gals who are running a Jabiru 3300 engine on your  aircraft.  I have heard there is no requirement for a manual mixture  control and would like to know if this is true and if so, how does the system  work when changing altitude.

  

 Bob Stone, Harker Heights, Tx

 ZodiacXL w/Jabiru 3300

   DO NOT  ARCHIVE

   [quote][b]

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Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Fri Sep 29, 2006 7:25 am Post subject: Re: Mixture control

It is correct and it is becuase the engine has a pressure compnesating carb.



 	  rstone4(at)hot.rr.com wrote: 	
		  Members,

      I would like to  hear from any of you guys/gals who are running a Jabiru 3300 engine on your  aircraft.  I have heard there is no requirement for a manual mixture  control and would like to know if this is true and if so, how does the system  work when changing altitude.

  

 Bob Stone, Harker Heights, Tx

 ZodiacXL w/Jabiru 3300

   DO NOT  ARCHIVE

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

rstone4(at)hot.rr.com
Guest

Posted: Fri Sep 29, 2006 7:54 am Post subject: Mixture control

Gig,

     Could you explain how the system works.  I have never heard of a 

pressure compensating carb. Does this mean the carb has a built in sensor 

that works off of barometric pressure like an altimeter to provide the 

correct mixture at whatever altitude one is flying?



Bob Stone

---

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dredmoody(at)cox.net
Guest

Posted: Fri Sep 29, 2006 8:03 am Post subject: Mixture control

The Bing carburetor on the Jabiru 3300 is a "self compensating" model which supposedly does as good a job of adjusting mixture for chnges in altitude as most pilots could/would do inflight with a manual mixture control. There is an ongoing debate as to whether it really does a good enough job, whether good enough is good enough, and whether a pilot can do it better with a manual mixture control.



For the mechanical details of how it works, email Pete Krotje at Jabiru USA. The email address is 



info(at)usjabiru.com



Pete is good about responding to customers and potential customers and can do a better job of explaining how the ambient pressure change adjusts the mixture.



Coincidentally the Rotax 912S uses two Bing self compensating carbs.



Hope that helps,



Ed Moody II



PS: How's the learning progressing with the Lowrance 2000C?



---- "Robert L. Stone" <rstone4(at)hot.rr.com> wrote: 

 	  Quote: 	
		   Members,

      I would like to hear from any of you guys/gals who are running a Jabiru 3300 engine on your aircraft.  I have heard there is no requirement for a manual mixture control and would like to know if this is true and if so, how does the system work when changing altitude.

 

 Bob Stone, Harker Heights, Tx

 ZodiacXL w/Jabiru 3300

   DO NOT ARCHIVE

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

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