Mike Wills wrote:

I followed up with one of the RV flyers I mentioned previously. This is his
response. He flies a slightly modified 180HP Lyc with mechanical injection.
He doesnt burn mogas, uses 100LL exclusively. The O2 sensor is a Bosch part
number 12028.

Mike Wills

From: RV4131rb@aol.com
Date: Fri, 14 May 1999 01:20:51 EDT
Subject: Re: RV-List: Re: Re:Oxygen Sensor
To: willsm@manta.spawar.navy.mil

In a message dated 99-05-12 19:03:40 EDT, you write:

<< Ryan,

 Following is a response you posted to questions regarding use of an O2
sensor/mixture gauge. There is a similar thread currently running on the
Mazda rotary engine list about use of an O2 sensor with 100LL. Tracy Crook
reported noticing that the response time of the sensor/gauge combination
was considerably slower after a cumulative total of about 110 hours burning
100LL in his RV-4. Have you noticed a similar type of slow down since
original install? Are you still running the original sensor? How many hours
on it now?

Thanks for any info,

Mike Wills >>

Mike,
 I have around 350hrs so far on mine now.  So far I have noticed no
problems and the indications apear to be the same as always. It may be that
the mazda installation has a slightly different effect, or it may be that
the
sensor I am using is different then the one Tracy uses. There are quite a
few
variables, he may have his mounted to close to the exaust port or to far
away.  At any rate so far so good for mine.
                                                   Ryan Bendure

If he is just using it for mixture indication I wonder why?
I don't think one runs a Lycoming at stoch. I could be wrong.
Most people just use the EGT for feedback and run it 50 or 
100 degrees rich of peak EGT.
 
Paul Lamar
 
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