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<DIV>Don't pull the wrist pin. Unless this part is really gummed up, don't
bother. The rough feeling bearing is a sign you're moving in the right
direction.</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 8/9/2009 1:25:39 P.M. Eastern Daylight Time,
lld613@psci.net writes:</DIV>
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<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">OK…as I said, I
haven’t done this before…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">I’ve removed the clip
from the wrist pin in the piston…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">What’s the trick to
pulling the wrist pin? Is it threaded for a
screw?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">If yes, what size…I’m
assuming metric…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">Since I have the
bearing, I’m going to replace it…Once I had the prop off, it does feel very
rough…Couldn’t tell it with the prop on and rolling it back and
forth…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">I’ll adjust the LE
needle once I put it back together if needed.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">The previous owner
sent me an e-mail this morning and said he it was running fine last fall. He
also gave be a main bearing and other parts as well. Based on all the info,
I’m replacing the bearing before I start with adjusting the
LE….<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt">Larry<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=navy size=2 face=Arial><SPAN style="FONT-FAMILY: Arial; COLOR: navy; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
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<P class=MsoNormal><B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt; FONT-WEIGHT: bold">From:</SPAN></FONT></B><FONT size=2 face=Tahoma><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt">
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Phil Spelt<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, August 09, 2009 11:55
AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> <st1:PersonName w:st="on">General pattern discussion</st1:PersonName><BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] OS 140RX
Need Help</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Larry,<BR><BR>I have run the 140RX -- FANTASTIC
engine!!! I agree with Dave. When you pinch the fuel line, you
lean out the engine temporarily, so it picks up speed until it dries out and
quits. Lean the low-speed needle until it will idle "forever" -- a
minute or more, and pick up smoothly through midrange to full throttle without
hesitation. I have never had my 140RX stall, at idle or in the
air...<BR><BR>At 12:49 PM 8/9/2009, you
wrote:<BR><BR><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Content-Type:
multipart/related;<BR><X-TAB> </X-TAB>
boundary="----=_NextPart_000_008C_01CA18EF.D0400F70"<BR>Content-Language:
en-us<BR><BR>I’ve never had an OS 140RX so I’m certainly no expert on them but
it sounds like you are too rich on the low end to me. You may still need a
bearing change and new ones won’t hurt but I’d try a little leaner
bottom end first.<BR> <BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B>
nsrca-discussion-bounces@lists.nsrca.org [<A title=mailto:nsrca-discussion-bounces@lists.nsrca.org href="mailto:nsrca-discussion-bounces@lists.nsrca.org" eudora="autourl">
mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Lisa n Larry<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, August 09, 2009 12:41
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> '<st1:PersonName w:st="on">General pattern discussion</st1:PersonName>'<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] OS 140RX
Need Help<BR> <BR>I pushed some Denatured Alcohol through the pump and it
seemed to clear that up quite a bit...If I let it sit it will drip a little
now and not at all at idle. So that seems to be under control...<BR><BR>Now it
idles very well and I can adjust top end. I'm getting about 7,900 on a 4
bladed prop 15.5x12 APC w/ PM Mean Green (15% w/ 18% all synthetic
oil).<BR><BR>However, once it idles for any length of time or even 1/2
throttle, it will bog down and quite as soon as I start to advance the
throttle. If I pinch the fuel tube it will pick up and run. If I go high then
low and back to high throttle without too much delay it transitions well. If
I'm at idle for about the same time as stall turn down line (2 or 3 seconds)
it will bog down...<BR><BR>This is what I'm assuming everyone has keyed in on
as the symptom of a main <A title=http://www.rcuniverse.com/buynow/keywordclick.cfm?bid_id=6534 href="http://www.rcuniverse.com/buynow/keywordclick.cfm?bid_id=6534">bearing</A>
going bad...<BR><BR>Off to surgery...now I get to see what the inside of a
140RX looks like...<BR><BR>Again, Thanks for all the
help....<BR> <o:p></o:p></SPAN></FONT></P>
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<P class=MsoNormal><B><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt; FONT-WEIGHT: bold">From:</SPAN></FONT></B>
nsrca-discussion-bounces@lists.nsrca.org [<A title=mailto:nsrca-discussion-bounces@lists.nsrca.org href="mailto:nsrca-discussion-bounces@lists.nsrca.org" eudora="autourl">
mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Lisa n Larry<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, August 09, 2009 9:15
AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
pnahobbies@sbcglobal.net; '<st1:PersonName w:st="on">General pattern
discussion</st1:PersonName>'<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] OS 140RX
Need Help<BR> <BR>I have the stock needle….<BR> <BR>My main spare
bearing is a Boca Bearing…P/N 6904Z and it is either shielded or
sealed…<BR> <BR>There appears to be no detectable play in the main
bearing currently installed in the motor…<BR> <BR>My strategy is to flush
the pump first and see how it responds…If no go, then replace the main
bearing…<BR> <BR>Thanks for all the help, I will keep you
posted…Hopefully we will get a few practice flights in yet
today…<BR> <BR>Larry<BR> <o:p></o:p></P>
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<P class=MsoNormal><B><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt; FONT-WEIGHT: bold">From:</SPAN></FONT></B>
nsrca-discussion-bounces@lists.nsrca.org [<A title=mailto:nsrca-discussion-bounces@lists.nsrca.org href="mailto:nsrca-discussion-bounces@lists.nsrca.org" eudora="autourl">
mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B><st1:place w:st="on"><st1:PlaceName w:st="on">Ihncheol</st1:PlaceName> <st1:PlaceType w:st="on">Park</st1:PlaceType></st1:place><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, August 09, 2009 3:46
AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> '<st1:PersonName w:st="on">General pattern discussion</st1:PersonName>'<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] OS 140RX
Need Help<BR> <BR><IMG SRC="cid:X.MA1.1249839844@aol.com" border=0 alt=losmg7025.jpg width=706 height=293 DATASIZE="17765" ID="MA1.1249839844" ><BR> <BR>61FX needle is longer
than the one on 70A.<BR> <BR><IMG SRC="cid:X.MA2.1249839844@aol.com" border=0 alt=losmg7052.jpg width=668 height=391 DATASIZE="19663" ID="MA2.1249839844" ><BR> <BR>Stock
needle for 70A carb.<BR> <BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B>
nsrca-discussion-bounces@lists.nsrca.org [<A title=mailto:nsrca-discussion-bounces@lists.nsrca.org href="mailto:nsrca-discussion-bounces@lists.nsrca.org" eudora="autourl">
mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Lisa n Larry<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Saturday, August 08, 2009 10:37
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> '<st1:PersonName w:st="on">General pattern discussion</st1:PersonName>'<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] OS 140RX
Need Help<BR> <BR>Dennis, as always you are right on the
money…<BR> <BR>I have not touched the pump or anything else other than
the HS needle…I believe it is either an OS # 8 or a “F”…I don’t have a 61
FX…<BR> <BR>Always coming back to the main bearing…There seems to be a
trend here…<BR> <BR>I haven’t flown a contest in over two years…Looking
to get back in the saddle…I appreciate all the
help….<BR> <BR>Larry<BR> <BR>PS, Dennis you just want to see my
caller LOL…<BR> <BR> <BR> <o:p></o:p></P>
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<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><B><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt; FONT-WEIGHT: bold">From:</SPAN></FONT></B>
nsrca-discussion-bounces@lists.nsrca.org [<A title=mailto:nsrca-discussion-bounces@lists.nsrca.org href="mailto:nsrca-discussion-bounces@lists.nsrca.org" eudora="autourl">
mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Dennis Bodary<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Saturday, August 08, 2009 10:31
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> <st1:PersonName w:st="on">General pattern discussion</st1:PersonName><BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] OS 140RX
Need Help<BR> <BR>I am assuming this engine has sat for awhile. try
injecting some straight methanol into the pump inlet line just in case the oil
in the pump is congealed. denatured alchohol will work fine for this. <BR>Do
not take the pump off the backplate thinking you can clean it out. Bad stuff
will happen as the backplate is part of the pump you may or may not even be
able to put it back together. <BR>Also try a OS F plug or the YS 4 stroke
plug. never had any luck with the A5 plug that came with it. <BR>Another
thought is check the needle valve against a OS61FX if the needle valve looks
the same you are okay. If the needle taper part is different try the 61FX
needle valve. It may already be in the engine as it comes with the engine as a
optional part. <BR>If all else fails try replacing the rear bearing.
<BR><BR>--- On <B><SPAN style="FONT-WEIGHT: bold">Sat, 8/8/09, Lisa n Larry
<I><SPAN style="FONT-STYLE: italic"><lld613@psci.net></SPAN></I></SPAN></B>
wrote:<o:p></o:p></P>
<P style="MARGIN-LEFT: 0.5in" class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">From: Lisa n Larry
<lld613@psci.net><o:p></o:p></SPAN></FONT></P>
<P style="MARGIN-LEFT: 0.5in" class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Subject:
[NSRCA-discussion] OS 140RX Need Help<o:p></o:p></SPAN></FONT></P>
<P style="MARGIN-LEFT: 0.5in" class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">To: "'<st1:PersonName w:st="on">General pattern discussion</st1:PersonName>'"
<nsrca-discussion@lists.nsrca.org><o:p></o:p></SPAN></FONT></P>
<P style="MARGIN-LEFT: 0.5in" class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">Date: Saturday, August 8,
2009, 9:56 PM<o:p></o:p></SPAN></FONT></P>
<P style="MARGIN-LEFT: 0.5in" class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">I’m trying to get a plane
going to make the <st1:place w:st="on"><st1:City w:st="on">Quincy</st1:City> ,
<st1:State w:st="on">OH</st1:State></st1:place> contest next
weekend…<o:p></o:p></SPAN></FONT></P>
<P style="MARGIN-LEFT: 0.5in" class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 0.5in; MARGIN-RIGHT: 0in; mso-margin-top-alt: 0in" class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt">When running at idle or the engine isn’t running, fuel
leaks out of the carb. I can get it started, but loads up in about ten seconds
and bogs down and dies when increasing the
throttle…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT size=3 face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"><BR>If I pinch the fuel line, it leans out and
recovers. As long as I stay near full throttle it’s fine…When at half throttle
and lower it will bog down….<BR> <BR>HS needle is at about 1-3/4 out
leaned from about 2 turns out. I don’t know the pump
settings.<BR> <BR>This is a used engine already installed in a
plane…<BR> <BR>Is it just a matter of the pump pressure being too high or
do I have other problems to deal with…???<BR> <BR>Larry Diamond<BR>NSRCA
3083<BR><BR>-----Inline Attachment
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</SPAN></FONT></I></B><B><I><FONT color=maroon face=Arial><SPAN style="FONT-STYLE: italic; FONT-FAMILY: Arial; COLOR: maroon; FONT-WEIGHT: bold">There
are only two types of aircraft -- fighters and
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President, Knox County Radio Control Society,
Inc.<BR> URL: <A title=http://www.kcrctn.com/ href="http://www.kcrctn.com/" eudora="autourl">http://www.kcrctn.com<BR></A>AMA--1294, Scientific
Leader Member, SPA--177<BR> My URL: <A title=http://mywebpages.comcast.net/~chuenkan/ href="http://mywebpages.comcast.net/~chuenkan/" eudora="autourl">http://mywebpages.comcast.net/~chuenkan/<BR></A>
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