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<DIV><FONT face=Arial size=2>Plug life will also vary depending on your after
run procedure. I've found that if I use too much after run oil the oil will pool
in the head of my Webra 1.45 and kill the plug. In fact, on occasions when I
tried to turn the engine over on the next outing it would have too much
compression and destroy the glow coil. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I store my plane level with the belly down (normal
flying orientation). If stored nose up or inverted this may not be an issue, but
the rack in the garage will only store it right side up.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Because of this problem I now only put about seven
drops of after run oil in it. This amount seems to allow the plug to last longer
(don't have any numbers on how many flights).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith Black</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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