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Why No Mixture Control on the Rotax 912ULS2?

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dplozay(at)cox.net
Guest

Posted: Fri Mar 17, 2006 8:24 pm Post subject: Why No Mixture Control on the Rotax 912ULS2?

List,



How do you lean the Rotax 912 ULS2 without a mixture control? I believe you all are getting along fine without it, but I am curious, especially the more I read about maintaining acceptable CHTs and EGTs.



What am I missing here?



Thanks,



David Plozay

CH701

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Elwood140(at)aol.com
Guest

Posted: Sat Mar 18, 2006 3:19 am Post subject: Why No Mixture Control on the Rotax 912ULS2?

David, the Rotax 912 has altitude-compensating carburetors that  continuously 

provide an optimum fuel mixture to the engine.  For that  reason, no mixture 

control is needed.

 

Regards

 

Larry Wood

(N701LW still aborning)

Do not archive

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larry(at)macsmachine.com
Guest

Posted: Sat Mar 18, 2006 7:51 am Post subject: Why No Mixture Control on the Rotax 912ULS2?

David,

You'd should obtain a "Bing Carburettors Aircraft  Tuning and Parts

Manual" from Bing using their order line ph. 1-800-309-2464.  I think 

the manual

is an indespensible document about 36 pages.  You've got the type 64 

Bing Carbs

and it describes all you should know to make adjustments and change out 

jets.  Bing also has

a technical support person that's willing to help.



Study the manual. Use it to disassemble your carbs, uncover what your 

jet sizes are,

buy a set of gaskets and jets one or two sizes from what you have in 

your carbs according to

EGT temp readings.



The best device you can use to keep track of CHTs and EGTs is a Grand

Rapids Technologies EIS system.  Very reasonable and easy to install and 

use.

This one will keep you informed at all times and you can tell when 

rejetting is

necessary on a seasonal basis.



Larry McFarland - 601HDS at www.macsmachine.com

David Plozay wrote:



 	  Quote: 	
		  



List,



How do you lean the Rotax 912 ULS2 without a mixture control? I believe you all are getting along fine without it, but I am curious, especially the more I read about maintaining acceptable CHTs and EGTs.



What am I missing here?



Thanks,



David Plozay

CH701

- 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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