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Date: Fri, 29 Dec 2006 07:00:38 -0800 (PST)
From: <fpbjr2001@yahoo.com>
Subject: Re: [FlyRotary] 100LL and O2 sensor
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-1723358@logan.com>
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Message-ID: <513485.58010.qm@web50701.mail.yahoo.com>

ed
 lou and i have changed our o2 sensor to a broad band
preheated type for two reasons. they last longer with
100LL fuel. because it is preheated it keeps more of
the lead off of the sensor. and of coarse you can get
an actual air/fuel ratio reading.
  i do have a question. we tuned our engine and it
takes added throttle real smooth but when we pull the
throttle the mixture goes crazy. the engine gets
erratic of course with the mixture all over the place.
any ideas what is going on.
 we go to the B side of the ECU and things smooth out
but the air fuel mixtures are not a lot different. we
need a little input.

               thanks  paul brannon   N117ES


--- Ed Anderson <eanderson@carolina.rr.com> wrote:

> While leaded fuel will quickly ruin an O2 sensor for
> its intended use in 
> controlling an automobile's fuel CPU, that is not
> true for using it as an 
> Air/Fuel Indicator.  I typically get over 150 hours
> with an O2 sensor using 
> 100LL 99% of the time, before it slowly becomes
> unusable for that purpose. I 
> am on my second O2 sensor and approaching 360 hours
> flight time.  The sensor 
> appears to gradually loose its sensitivity and
> responsiveness to changing 
> air/fuel conditions. Now this pertains to the older
> (standard) narrow-band 
> O2 sensor, I have no experience with the newer (more
> accurate and more 
> expensive) broad-band sensor.
> 
> FWIW
> 
> Ed
> ----- Original Message ----- 
> From: "Jeff Owen" <rotary@jeff-owen.name>
> To: "Rotary motors in aircraft"
> <flyrotary@lancaironline.net>
> Sent: Friday, December 29, 2006 12:19 AM
> Subject: [FlyRotary] Re: Yet another non-event story
> 
> 
> Buly,
> 
> Are you using 100LL?  Leaded fuel will kill O2
> sensors quickly.
> 
> If you are running leaded fuel save yourself some
> wrenching time by changing
> the O2 sensor first.
> 
> Jeff Owen
> 
> >During the flight I noticed my mixture bar was
> going from lean to
> >totally desapearing. Turning the knob to full rich
> was not enough. So
> >I have to do some more tuning.
> >Bulent "Buly" Aliev
> >FXE Ft lauderdale, FL
> 
> 
> 
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:  
> http://mail.lancaironline.net/lists/flyrotary/ 
> 
> 
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:  
> http://mail.lancaironline.net/lists/flyrotary/
> 


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