Hi Tommy,

    Only difference as far as I know is that the one wire sensor takes a
while to warm up and give a correct reading - which probably makes it
unsuited for most of todays automobile CPUs.  .  But for aircraft usage,
that should pose no problem as once you get started it will be warmed up
quickly by the rotary horridly hot exhaust.
I got started with a 4 wire lead (mainly because that O2 sensor had the
response cruve for different exhaust temps), but I have found that it
doesn't really matter for our uses.

Ed Anderson
----- Original Message -----
From: "Tommy James" <twjames@healed.org>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, July 08, 2003 4:58 PM
Subject: [FlyRotary] Re: O2 Sensor Life with Lead Gasoline


> FWIW--:-)
> I found a Bosch single wire O2 sensor for about $20.00.  Bosch #12013.
> Seems to work fine, but we will have to test it over at least 100 hours to
> prove it will be worth the cost difference..:-)  Ed, you might get your O2
> sensor expense down to $.18/hr. or so..
> Tommy James<><
>
>  At $42.00 that amounts to approx 36 cents/hour or about 2 years flying
time
> at my present rate.
>
> Ed Anderson
>
>
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