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<DIV><FONT face=Arial size=2>No offense taken, Rodney.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I've found that if you need the heat from two OSF's
your pipe may be too long. I know this is off the subject, but the tips
for setting up Mintor engines that I have on my website are worth a look.
I have quite a bit of experience with many different instances of these engines,
so it is not all based on what makes one particular engine work.
Everything I can share that will improve your setup, and I have sufficient test
data to back up my recommendations, I will share.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>If plug life is worse on one particular engine as
compared to the norm for that engine then there's agood chance the engine is (in
order of probability): either set lean, has a leak (carb seat, fuel line, pump,
etc), is set rich, has a distorted ring/sleeve fit.</FONT></DIV>
<DIV><FONT face=Arial size=2>--Lance</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rodney19821982@yahoo.com
href="mailto:rodney19821982@yahoo.com">Rodney Tanner</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, April 20, 2005 1:22
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [SPAM] Re: RE: OS mixture
question</DIV>
<DIV><BR></DIV>
<DIV>
<DIV>Hi Jim,</DIV>
<DIV> </DIV>
<DIV>I run about 3 clicks rich from peak RPM, with a good smoke
trail from tick-over up to WOT. Both engines have newish rear
bearings (below 50 flights). At around 25-30 flights on the
plugs they start to falter lean on inverted pull ups, going to WOT.
Usually changing the rear plug (which runs hotter) will cure it, sometimes it
needs both. I have tried OS8s and A5s on the back, but have found the OSFs to
be better on both. </DIV>
<DIV>What do people see as an acceptable average plug life for the
OS140? After my experience with a certain Italian motor, I thought 30
flights was PDG!! :-)</DIV>
<DIV>No offense Lance . . .!!!!</DIV>
<DIV>I seem remeber the OS140 manual says "treat glo plugs as expendible items
and be prepared to change them when necessary", or words to that effect. In
other words always keep a pair handy!!</DIV>
<DIV> </DIV>
<DIV>Rodney</DIV>
<DIV><BR><BR><B><I>Jim_Woodward@beaerospace.com</I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"><BR><FONT
face=sans-serif size=2>Hi Rodney,</FONT> <BR><BR><FONT face=sans-serif
size=2>Why are you changing plugs every 30 flights? That get pretty
expensive in the long run. Is the engine running lean? I've seen
a few other using the 3M head and OSF plugs, and not having to change so
often.</FONT> <BR><BR><FONT face=sans-serif size=2>Cameron, how often are
you changing plugs?</FONT> <BR><BR><FONT face=sans-serif
size=2>Thanks,</FONT> <BR><FONT face=sans-serif size=2>Jim W.</FONT>
<BR><FONT face=sans-serif size=2><BR></FONT>
<P></P></BLOCKQUOTE></DIV>
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