Mailing List flyrotary@lancaironline.net Message #6953
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: Rusty's O2 / EM2 problems.
Date: Thu, 1 Apr 2004 07:16:35 -0600
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
On mine max rich is around 1.0 volts, mids scale gives me around 0.45-0.6 volts, low end drops off around 0.1.5 - 0.2 volts. 
 
Thanks Ed.  That is, of course, exactly what it should read.  The next step is to temporarily re-install the old mixture gauge, and compare it to the EM-2.  I will also measure the O2 sensor voltage at the same time.   I may even pick up another O2 sensor, just in case. 
 
Is the O2 sensor you are using a heated 3/4 wire unit?  If so I am wondering whether you might possibly have a ground loop feeding heater voltage onto your sensor lead?
 
 
Good thought, but it's just the cheap single wire unit that Tracy and Finn are both using.  
 
Thanks,
Rusty (mourning the loss of my 6 months paid severance vacation) 
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