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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: SAG- Spark plugs
Date: Wed, 8 Jul 2009 09:35:18 -0400
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Hi Ernest,

The answer to your question is - no, I have not tried the Autolight plugs.
The one and only time I put other than stock plugs in my engine, the first
flight I lost all the apex seals on one rotor.  Turns out it when I tore
down the engine, it was clear the plug change had nothing to do with the
problem.  But, I never got back to experimenting with plugs for some reason
{:>)

However, your point is well taken, that could certainly be worth trying out.


Ed Anderson

Rv-6A N494BW Rotary Powered

Matthews, NC

eanderson@carolina.rr.com

http://www.andersonee.com

http://www.dmack.net/mazda/index.html

http://www.flyrotary.com/

http://members.cox.net/rogersda/rotary/configs.htm#N494BW

http://www.rotaryaviation.com/Rotorhead%20Truth.htm

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ernest Christley
Sent: Wednesday, July 08, 2009 9:30 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: SAG- Spark plugs

Lynn Hanover wrote:
> Poor folks race with Autolight AR2692 end style and small porcelain just
> like the N-57G. Full size center wire, conventional strap, but 100% of the
> center wire is exposed in an end view. Actually used by NASCAR and the
local
> circle track people, and stocked by Autozone and others. About $5.00 a box
> of 4. They work fine. I raced them one weekend, no problems, but we were
> getting the NGK plugs for free so I stuck with them.
>
>   

Ed, have you given the Autolight AR2692 a chance to see how long it 
takes for SAG to set in.  Your theory is that lead deposits settle on 
the porcelain and start to provide an alternate path.  The Autolight's 
configuration looks like it has a wider space between electrode and 
ground, except for the tang (not sure what the real name is).  If your 
theory is correct, you should be able to get a lot more time on the 
Autolights.

-- 

http://www.ernest.isa-geek.org


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