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<DIV><FONT color=#000000 size=2>correction to previous post...</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT><FONT size=2>Lance lengthened his Greive
pipe to got more power... he had it to short. Too short can make it load
up too.</FONT></DIV>
<DIV><FONT size=2>Start out with a long pipe setup and shorten till peak rpm is
reached.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Excuse meeeeee.....</FONT></DIV>
<DIV><FONT size=2>WG</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">
<DIV><FONT face=Arial size=2><B>-----Original Message-----</B><BR><B>From:
</B>wgalligan <<A
href="mailto:wgalligan@cnbcom.net">wgalligan@cnbcom.net</A>><BR><B>To:
</B><A href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> <<A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A>><BR><B>Date:
</B>Sunday, April 27, 2003 8:45 AM<BR><B>Subject: </B>Re: OS 140 and Greve
pipe question<BR><BR></DIV></FONT>
<DIV><FONT color=#000000 size=2>Lance Vanodstrand and I did some testing on
his airplane with the O.S. and grieve pipe. He had the length too long
and couldnt seem to get enough power. The pipe was way too long.
We shortend the pipe and he got much better results. Try shortening it
a little at a time till you reach a peak rpm and if the rpm drop after
shortening it then back it off about 1/4-3/8". You should
be able to turn a 17x12n APC about 8400rpm on 15% fuel O.S. "F"
plug. You could have other issues but this is what we found on the
tuning part. </FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT> </DIV>
<DIV><FONT size=2>Wayne</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">
<DIV><FONT face=Arial size=2><B>-----Original
Message-----</B><BR><B>From: </B>GW <<A
href="mailto:gw@gwair.com">gw@gwair.com</A>><BR><B>To: </B><A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> <<A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A>><BR><B>Date:
</B>Saturday, April 26, 2003 11:04 AM<BR><B>Subject: </B>OS 140 and
Greve pipe question<BR><BR></DIV></FONT>
<DIV><FONT face=Arial size=2>Can someone let me know the proper setup
lengths for this engine and pipe combo? OS 140 /Greve pipe.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have tried many different lengths on the
pipe, and many different setting on the needles, and I still have a very
rich midrange that the engine cannot overcome. The engine will reach max
RPM if I go from idle to full throttle in a quick transition, but with a
slow advance of the throttle from low to high, it stumbles,spits and
sputters from mid throttle on and often just quits after a few moments
of stumbling.and never reaches max rpm.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have run the pressure adjust on the pump
out up to 1 1/2 turns to reduce pressure, with little or no
change.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am about to install a 3M head with dual
plugs to see if it will help.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>As a side note, I have a CD products
Muffler (very restrictive but quiet) and the engine runs flawlessly on
this setup, Transition is perfect, but this setup will not fit in my new
CA Models Eclipse, so the Greve needs to work!</FONT></DIV>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2>Any advise?</FONT></DIV>
<DIV> </DIV></FONT></DIV>
<DIV><FONT face=Arial size=2>Thanks</FONT></DIV>
<DIV><FONT face=Arial size=2>GW</FONT></DIV>
<DIV><FONT face=Arial size=2>Gerald</FONT></DIV>
<DIV><FONT face=Arial
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