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<DIV><SPAN class=800144318-24092006><FONT face=Arial color=#0000ff
size=2>Dean,</FONT></SPAN></DIV>
<DIV><SPAN class=800144318-24092006><FONT face=Arial color=#0000ff
size=2> I don't know if it ever ran right. I bought it used. I started it
for the first time on Friday. It has a new ring and new bearings. It has the OS
dual-plug head. "F" in the center, "8" in the rear. None of this work was done
by myself, this is how I got it.The entire mixture curve is too rich. Idle,
top-end, mid-range. In other words too much fuel pressure. I set the pipe
way long just so that I could fly it. The idle adjustment is full clockwise and
it still loads up eventually. It's just too fat everywhere. I'm going to pull it
and see what the pump looks like. Is there any way to put it back to the
original setup if I find out that somebody adjusted something? OS doesn't
give any reference - I guess they don't want you to touch
it.</FONT></SPAN></DIV>
<DIV><SPAN class=800144318-24092006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=800144318-24092006>
<P><FONT size=2>John Pavlick<BR><A href="http://www.idseng.com/"
target=_blank>http://www.idseng.com</A><BR> </FONT> </P></SPAN></DIV>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Dean Pappas
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>Dean
Pappas<BR><B>Sent:</B> Sunday, September 24, 2006 12:23 PM<BR><B>To:</B> NSRCA
Mailing List<BR><B>Subject:</B> RE: [NSRCA-discussion] OS 140Rx pump
question<BR><BR></FONT></DIV>
<DIV>Hi John,</DIV>
<DIV>Did it ever run properly, before? If the adjustment screw wasn't moved,
then the first thing to do is disassemble and clean. A piece of crud in the
right spot will kill the regulation. Has the engine been decompressed with
additional head gaskets? That add richness in the midrange. If that
doesn't help, then you are stuck with either lengthening the pipe or fixing
the carb metering curve with a throttle to remote needle curve coupling
in the radio. </DIV>
<DIV>Dean</DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV><FONT size=2>-----Original Message----- <BR><B>From:</B>
nsrca-discussion-bounces@lists.nsrca.org on behalf of John Pavlick
<BR><B>Sent:</B> Sun 9/24/2006 1:29 AM <BR><B>To:</B> NSRCA Discussion
<BR><B>Cc:</B> <BR><B>Subject:</B> [NSRCA-discussion] OS 140Rx pump
question<BR><BR></FONT></DIV>
<P><FONT size=2>I'm having some trouble with my OS 140Rx and it seems to me
that maybe<BR>somebody played with the pump (I bought this motor used).
Here's what's<BR>going on. The main needle wants to be at about 3/4 turns
out. Not even a<BR>full turn. If I open it to 1 1/4 turns it's slobbering
rich. The idle is<BR>rich even with the adjustment turned fully clockwise.
It is flyable, but I<BR>know something isn't right. This motor also has a
dual-plug OS head. I have<BR>an "F" plug in the center and an "8" in the
rear. The transition isn't<BR>great, especially at about 1/2 throttle. On
the ground it will actually load<BR>up sometimes. In the air it's not so bad
but it doesn't sound right. If it<BR>had a Perry pump I'd back off the
pressure and that would probably fix it.<BR>Like I said, I'm thinking
someone played with the pump for whatever reason.<BR>Is there any way to set
it up as it was originally or do I have to send it<BR>back to the service
center?<BR><BR>John Pavlick<BR><A
href="http://www.idseng.com">http://www.idseng.com</A><BR><BR>--<BR>No virus
found in this outgoing message.<BR>Checked by AVG Free Edition.<BR>Version:
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9/22/06<BR><BR>_______________________________________________<BR>NSRCA-discussion
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