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Message-ID: <1b4b137c0807200746k4a978bb0rd5530dfe16d9cb64@mail.gmail.com>
Date: Sun, 20 Jul 2008 10:46:00 -0400
From: "Tracy Crook" <tracy@rotaryaviation.com>
Sender: rwstracy@gmail.com
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Spark plugs
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The Iridum plugs are not the old BUR series I used to use.  I'll have to ge=
t
that number for you.  I pulled them out of the Renesis crate engines I
bought so I assume they are the standard plugs used in the RX-8 car.  They
look similar to the old style plugs with adjustable gaps but the electrodes
are extreamly fine wire.   Very expensive (so I'm told) and fragile looking
but they work great.

Tracy

On Fri, Jul 18, 2008 at 12:10 PM, Al Gietzen <ALVentures@cox.net> wrote:

>
>
> Never tried a smaller gap with  SAG ing plugs since the gap is not
> adjustable on the NGK BUR 7/9EQ plugs I was using.  By the time I got SAG
> the first time, the center electrode had burned down to the point where t=
he
> gap was almost .100".  Amazing that the engine ran as well as it did.
>
>
>
> BTW, comming up on 250 hours on Iridium plugs with no SAG yet.  Very litt=
le
> 100LL fuel used though.
>
>
>
> Tracy;
>
>
>
> Explain to me further:  Are you using BUR9EQ leading and 7EQ trailing?
>  What is the part # of the iridium =96 same?  250 hours on one set of plu=
gs?
>
>
>
> I'm happy with the performance of the B9EGV, and have never experienced S=
AG
> =96 I also use little 100LL (and they seem immune to fouling due to flood=
ing);
> but I'm not impressed with how long they last.
>
>
>
> Al G
>

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<div dir=3D"ltr"><div>The Iridum plugs are not the old BUR series I used to=
 use.&nbsp; I&#39;ll have to get that number for you.&nbsp; I pulled them o=
ut of the Renesis crate engines I bought so I assume they are the standard =
plugs used in the RX-8 car.&nbsp; They look similar to the old style plugs =
with adjustable gaps but the electrodes are extreamly fine wire.&nbsp;&nbsp=
; Very expensive&nbsp;(so I&#39;m told)&nbsp;and fragile looking but they w=
ork great.&nbsp; </div>

<div>&nbsp;</div>
<div>Tracy<br><br></div>
<div class=3D"gmail_quote">On Fri, Jul 18, 2008 at 12:10 PM, Al Gietzen &lt=
;<a href=3D"mailto:ALVentures@cox.net">ALVentures@cox.net</a>&gt; wrote:<br=
>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div lang=3D"EN-US" vlink=3D"blue" link=3D"blue">
<div>
<p><font face=3D"Times New Roman" size=3D"3"><span style=3D"FONT-SIZE: 12pt=
">&nbsp;</span></font></p>
<div>
<div>
<p style=3D"MARGIN-LEFT: 0.5in"><font face=3D"Times New Roman" size=3D"3"><=
span style=3D"FONT-SIZE: 12pt">Never tried a smaller gap with&nbsp; SAG ing=
 plugs since the gap is not adjustable on the NGK BUR 7/9EQ plugs I was usi=
ng.&nbsp; By the time I got SAG the first time, the center electrode had bu=
rned down to the point where the gap was almost .100&quot;.&nbsp; Amazing t=
hat the engine ran as well as it did.</span></font></p>
</div>
<div>
<p style=3D"MARGIN-LEFT: 0.5in"><font face=3D"Times New Roman" size=3D"3"><=
span style=3D"FONT-SIZE: 12pt">&nbsp;</span></font></p></div>
<div>
<p style=3D"MARGIN-LEFT: 0.5in"><font face=3D"Times New Roman" size=3D"3"><=
span style=3D"FONT-SIZE: 12pt">BTW, comming up on 250 hours on Iridium plug=
s with no SAG yet.&nbsp; Very little 100LL fuel used though.</span></font><=
/p></div>

<div>
<p style=3D"MARGIN-LEFT: 0.5in"><font face=3D"Times New Roman" size=3D"3"><=
span style=3D"FONT-SIZE: 12pt">&nbsp;</span></font></p></div>
<p><font face=3D"Times New Roman" color=3D"blue" size=3D"3"><span style=3D"=
FONT-SIZE: 12pt; COLOR: blue">Tracy</span></font><font color=3D"blue"><span=
 style=3D"COLOR: blue">;</span></font></p>
<p><font face=3D"Verdana" color=3D"blue" size=3D"2"><span style=3D"FONT-SIZ=
E: 11pt; COLOR: blue; FONT-FAMILY: Verdana">&nbsp;</span></font></p>
<p><font face=3D"Verdana" color=3D"blue" size=3D"2"><span style=3D"FONT-SIZ=
E: 11pt; COLOR: blue; FONT-FAMILY: Verdana">Explain to me further:&nbsp; Ar=
e you using BUR9EQ leading and 7EQ trailing? &nbsp;What is the part # of th=
e iridium =96 </span></font><font face=3D"Verdana" color=3D"blue" size=3D"2=
"><span style=3D"FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: Verdana">sam</s=
pan></font><font face=3D"Verdana" color=3D"blue" size=3D"2"><span style=3D"=
FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: Verdana">e?&nbsp; 250 hours on o=
ne set of plugs?</span></font></p>

<p><font face=3D"Verdana" color=3D"blue" size=3D"2"><span style=3D"FONT-SIZ=
E: 11pt; COLOR: blue; FONT-FAMILY: Verdana">&nbsp;</span></font></p>
<p><font face=3D"Verdana" color=3D"blue" size=3D"2"><span style=3D"FONT-SIZ=
E: 11pt; COLOR: blue; FONT-FAMILY: Verdana">I'm happy with the performance =
of the B9EGV, and have never experienced SAG =96 I also use little 100LL (a=
nd they seem immune to fouling due to flooding); but I'm not impressed with=
 how long they last.</span></font></p>

<p><font face=3D"Verdana" color=3D"blue" size=3D"2"><span style=3D"FONT-SIZ=
E: 11pt; COLOR: blue; FONT-FAMILY: Verdana">&nbsp;</span></font></p>
<p><font face=3D"Verdana" color=3D"blue" size=3D"2"><span style=3D"FONT-SIZ=
E: 11pt; COLOR: blue; FONT-FAMILY: Verdana">Al G</span></font></p></div></d=
iv></div></blockquote></div><br></div>

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