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<DIV><SPAN class=480392709-27062006><FONT face=Arial color=#0000ff size=2>More
thoughts on the bearings....</FONT></SPAN></DIV>
<DIV><SPAN class=480392709-27062006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=480392709-27062006><FONT face=Arial color=#0000ff size=2>Those
generic bearings that performed so well for me at the beginning of the season
lasted 50 flights. Front bearing developed some axial play
(crankshaft moves in/out ever so slightly.) Idle and transition has
become inconsistent the last few flights so I'm waiting on a Tower
order to come in.</FONT></SPAN></DIV>
<DIV><SPAN class=480392709-27062006><FONT face=Arial color=#0000ff size=2><FONT
size=2></FONT></FONT></SPAN> </DIV>
<DIV><SPAN class=480392709-27062006><FONT face=Arial color=#0000ff size=2><FONT
size=2><A
href="http://www.toolpartsdirect.com/cgi-bin/grouplisting.cgi/bearings/makita">http://www.toolpartsdirect.com/cgi-bin/grouplisting.cgi/bearings/makita</A></FONT>
is out of stock on the rear bearing until 7/17...guess we cleaned them
out!</FONT> <FONT face=Arial color=#0000ff size=2> (Only out of stock
bearing in the entire list, kind of funny.)</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>Rick
Wallace<BR><B>Sent:</B> Monday, June 26, 2006 9:13 PM<BR><B>To:</B>
nsrca-discussion@lists.nsrca.org<BR><B>Subject:</B> Re: [NSRCA-discussion] OS
140RX rough and inconsistent idle<BR><BR></FONT></DIV>
<DIV>
<P>Ed - </P>
<P>two thoughts on bearings - </P>
<P>1. I've heard from others that a worn front bearing can be the cause of
idle problems - has that one been changed lately? </P>
<P>2. rear bearings - I've not had real success w/ any bearing other than an
OS EFI bearing installed just as it comes out of the bag - don't know how long
they last because both engines are on their second or third season on the same
rear bearing... Stock bearing, aftermarket stainless, Boca's of various
flavors all had finite - and short- lives in my engines ... </P>
<P>It'll be great to see you on the flight line in Muncie! </P>
<P>Rick <BR><BR></P>
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From: <I>"Ed Miller" <edbon85@charter.net></I><BR>Reply-To: <I>NSRCA
Mailing List <nsrca-discussion@lists.nsrca.org></I><BR>To: <I>"NSRCA
Mailing List" <nsrca-discussion@lists.nsrca.org></I><BR>Subject:
<I>Re: [NSRCA-discussion] OS 140RX rough and inconsistent idle</I><BR>Date:
<I>Mon, 26 Jun 2006 13:56:41 -0400</I><BR><BR>
<META content="Microsoft SafeHTML" name=Generator>
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<DIV>Thanks, looked at that so far when I removed engine, all looks
normal. Taking the engine apart in an hour or so. </DIV>
<DIV>Yes, I'll be getting fuel from Scott Thursday. I figured this was
better than cramping you guys on the trip out to Muncie. I'll call you
tonight. </DIV>
<DIV>Ed.</DIV>
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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=DaveL322@comcast.net
href="mailto:DaveL322@comcast.net">DaveL322@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 26, 2006 1:39
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] OS
140RX rough and inconsistent idle</DIV>
<DIV><BR></DIV>
<DIV>Ed,</DIV>
<DIV> </DIV>
<DIV>Long shot - but double check throttle servo mount/linkage, and
mounting of engine, softmount, nosering, pipe, etc - any of that stuff
gets loose, funny things can happen.</DIV>
<DIV> </DIV>
<DIV>Anderson should have fuel for you.</DIV>
<DIV> </DIV>
<DIV>Dave</DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: "Ed Miller" <<A
href="mailto:edbon85@charter.net">edbon85@charter.net</A>>
<BR><BR>> Have an OS 140RX that has developed a rough and
inconsistent idle. Engine <BR>> runs perfectly except for idle. It
has a Mintor head with either an OS F or <BR>> K&B 1L in center
plug and an OS A5 in the angled plug position, a Perf Spec <BR>> AAC
piston/liner assembly and a Boca sealed SS rear bearing. I have the head
<BR>> mounted with angled plug towards the front or carb side of
engine. Fuel is <BR>> S&W 20 nitro, 16 synthetic and 2 castor.
Engine has 7 gallons of fuel run <BR>> through it. Prop is an APC
15.75 x 11 3 blade by Dave Lockhart. The lowest <BR>> I can get the
idle before it quits is 1900 ~ 2000 rpm and it is rough, <BR>> sounds
like it is firing every other revolution. Idle mixture screw is <BR>>
working, I can richen idle to poi! nt wher e engine will barely
transition from <BR>> being rich and I can lean mixture so the
transition is fine but engine slows <BR>> at idle like it is too
rich. While it is slowing with either the idle <BR>> mixture screw
lean or rich, engine is rough, again like it often fires every <BR>>
other revolution at times. I used to be able to reliably idle this
engine at <BR>> 1300 rpm. I have a second OS 140RX set up exactly the
same except it doesn't <BR>> have the AAC piston/liner and it
runs/idles perfectly. Tried cleaning the <BR>> carb/spray bar with no
change. I once had a Super Tiger that exhibited <BR>> similar
characteristics due to a worn out con rod. Is it possible the con
<BR>> rod on this OS could cause this issue ?? Any suggestions will
be greatly <BR>> appreciated. <BR>> Ed M. <BR>>
_______________________________________________ <BR>>
NSRCA-discussion mailing list <BR>> NSRCA-discussion@lists.nsrca.org
<BR>> http://lists.nsrc! a.org/m ailman/listinfo/nsrca-discussion
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