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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1722727@logan.com>
Subject: 100LL and O2 sensor
Date: Fri, 29 Dec 2006 07:53:54 -0500
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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


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