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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The low speed needle needs adjustment. It’s set too rich.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Lisa n
Larry<br>
<b>Sent:</b> Sunday, August 09, 2009 12:41 PM<br>
<b>To:</b> 'General pattern discussion'<br>
<b>Subject:</b> Re: [NSRCA-discussion] OS 140RX Need Help<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>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
href="http://www.rcuniverse.com/buynow/keywordclick.cfm?bid_id=6534"
target="_blank"
title="Boca Bearings has the most comprehensive RC Bearing search engine on the internet!"><span
style='text-decoration:none'>bearing</span></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....</span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
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<hr size=2 width="100%" align=center>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org]
<b>On Behalf Of </b>Lisa n Larry<br>
<b>Sent:</b> Sunday, August 09, 2009 9:15 AM<br>
<b>To:</b> pnahobbies@sbcglobal.net; 'General pattern discussion'<br>
<b>Subject:</b> Re: [NSRCA-discussion] OS 140RX Need Help</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>I have the stock needle….<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>My main spare bearing is a Boca Bearing…P/N 6904Z and it is either
shielded or sealed…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>There appears to be no detectable play in the main bearing
currently installed in the motor…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>My strategy is to flush the pump first and see how it responds…If
no go, then replace the main bearing…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Thanks for all the help, I will keep you posted…Hopefully we will
get a few practice flights in yet today…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Larry<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Ihncheol
Park<br>
<b>Sent:</b> Sunday, August 09, 2009 3:46 AM<br>
<b>To:</b> 'General pattern discussion'<br>
<b>Subject:</b> Re: [NSRCA-discussion] OS 140RX Need Help</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img border=0 width=706 height=293
id="Picture_x005f_x005f_x005f_x0020_0" src="cid:image001.jpg@01CA18FB.4B3E4330"
alt=losmg7025.jpg><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>61FX needle is longer than the one on 70A.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img border=0 width=668 height=391
id="Picture_x005f_x005f_x005f_x0020_1" src="cid:image002.jpg@01CA18FB.4B3E4330"
alt=losmg7052.jpg><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Stock needle for 70A carb.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Lisa n
Larry<br>
<b>Sent:</b> Saturday, August 08, 2009 10:37 PM<br>
<b>To:</b> 'General pattern discussion'<br>
<b>Subject:</b> Re: [NSRCA-discussion] OS 140RX Need Help<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Dennis, as always you are right on the money…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>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…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Always coming back to the main bearing…There seems to be a trend
here…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>I haven’t flown a contest in over two years…Looking to get back in
the saddle…I appreciate all the help….<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Larry<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>PS, Dennis you just want to see my caller LOL…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org]
<b>On Behalf Of </b>Dennis Bodary<br>
<b>Sent:</b> Saturday, August 08, 2009 10:31 PM<br>
<b>To:</b> General pattern discussion<br>
<b>Subject:</b> Re: [NSRCA-discussion] OS 140RX Need Help</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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<div>
<p class=MsoNormal>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. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>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. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Also try a OS F plug or the YS 4 stroke plug. never had
any luck with the A5 plug that came with it. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>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. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>If all else fails try replacing the rear bearing. <br>
<br>
--- On <b>Sat, 8/8/09, Lisa n Larry <i><lld613@psci.net></i></b> wrote:<o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid #1010FF 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
From: Lisa n Larry <lld613@psci.net><br>
Subject: [NSRCA-discussion] OS 140RX Need Help<br>
To: "'General pattern discussion'"
<nsrca-discussion@lists.nsrca.org><br>
Date: Saturday, August 8, 2009, 9:56 PM<o:p></o:p></p>
<div id=yiv1113333538>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>I’m
trying to get a plane going to make the Quincy , OH contest next weekend…</span><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>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…</span><o:p></o:p></p>
</blockquote>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>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….</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>HS
needle is at about 1-3/4 out leaned from about 2 turns out. I don’t know the
pump settings.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>This is
a used engine already installed in a plane…</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Is it
just a matter of the pump pressure being too high or do I have other problems
to deal with…???</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Larry
Diamond</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>NSRCA
3083</span><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
-----Inline Attachment Follows-----<o:p></o:p></p>
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<p class=MsoNormal>_______________________________________________<br>
NSRCA-discussion mailing list<br>
<a
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style='color:blue'>NSRCA-discussion@lists.nsrca.org</span></a><br>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target="_blank"><span style='color:blue'>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</span></a><o:p></o:p></p>
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