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Anyone hear of a CO monitor for mixture?

 
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rparigor(at)SUFFOLK.LIB.N
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PostPosted: Mon Mar 13, 2006 8:45 am    Post subject: Anyone hear of a CO monitor for mixture? Reply with quote

I have a turbo charged Rotax 914.

Rotax reccomends if you change the intake track, you must make sure that
it does not effect the area of higher pressure impact air used to enrich
during operations above 108% power.

The way they want you to check is to monitor 4 cylinders for Carbon
Monoxide content.

Has anyone used one?
Have one?
Knows where to get one?

Thx.
Ron Parigoris


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Gilles.Thesee(at)ac-greno
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PostPosted: Mon Mar 13, 2006 10:24 am    Post subject: Anyone hear of a CO monitor for mixture? Reply with quote

rparigor(at)SUFFOLK.LIB.NY.US a crit :

Quote:


I have a turbo charged Rotax 914.

Rotax reccomends if you change the intake track, you must make sure that
it does not effect the area of higher pressure impact air used to enrich
during operations above 108% power.

The way they want you to check is to monitor 4 cylinders for Carbon
Monoxide content.

Has anyone used one?
Have one?
Knows where to get one?



Ron,
Have a look at the Gastester made by Gunson. There are two models.

http://eastwood.resultspage.com/search?p=Q&ts=custom&w=gastester&submit.x=39&submit.y=13&submit=Search

You need to make a threaded adaptor, with a small piece of stainless
steel tubing, and screw it into each of the the pipes in sequence, take
off at 115 % power with a "flight engineer" operating the Gastester.
Find the pipe with the lowest CO, then turn the pressure pickup a few
degrees, take off again, then determine the correct position by trial
and error etc.

The French Rotax importer never did the test.
Our kit manufacturer, Dyn'Aero did not do it with their intercooled
prototype, and said they are not intending to.
Please keep us posted.

FWIW,
Regards,
Gilles Thesee
Grenoble, France
http://contrails.free.fr


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