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<DIV>Got it. You are correct on all accounts. This engine only has about 30
flights on it. The bearaing is OK but a friend of mine had to replace his
recently so I figured I do this before it's too late. I normally
do this on a brand new motor so the crud on the wristpin surprised me. The
sealed bearings are the way to go. They've been running in my OS 160's for a
while now.</DIV>
<DIV> </DIV>
<DIV>John Pavlick<BR><A
href="http://www.idseng.com">http://www.idseng.com</A></DIV>
<BLOCKQUOTE
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=JonLowe@aol.com href="mailto:JonLowe@aol.com">JonLowe@aol.com</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-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, May 30, 2007 9:53
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] OS 120 Ax
bearing replacement</DIV>
<DIV><BR></DIV>
<DIV>
<DIV>
<DIV>In a message dated 5/30/2007 8:35:05 PM Central Daylight Time, <A
href="mailto:jpavlick@idseng.com">jpavlick@idseng.com</A> writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid">
<DIV><FONT face=Arial size=2>Has anyone replaced the bearings in their OS
120 Ax? What's the trick? I've done plenty of bearings but this one is
different. After removing everything, including the sleeve, I can't slide
the rod far enough back to get it off the crankpin. The pin boss in the
piston is too narrow to allow the rod to slide far enough. If anyone has
done this already I'd appreciate any insight. Thanks!</FONT></DIV>
<DIV><FONT size=2></FONT><FONT
face=Arial></FONT> </DIV></BLOCKQUOTE></DIV>
<DIV>John,</DIV>
<DIV>I've done it. The rod will slide far enough on the pin, but often
sticks on baked on stuff that gets on the pin. You have to work it back
and forth until it frees up. Try some WD-40 or something like that to
try to melt away the crud.</DIV>
<DIV> </DIV>
<DIV>Use the 1.40 fuel injected rear bearing from Tower. Cheaper
than Boca, and it is much better than the original. I only got about
30-40 flights on my 1.20 before I had to change the
bearing.</DIV></DIV>
<DIV> </DIV>
<DIV><FONT size=2 PTSIZE="10">Jon Lowe<BR></FONT></DIV><BR><BR><BR>
<DIV><FONT style="FONT: 10pt ARIAL, SAN-SERIF; COLOR: black">
<HR style="MARGIN-TOP: 10px">
See what's free at <A title=http://www.aol.com?ncid=AOLAOF00020000000503
href="http://www.aol.com?ncid=AOLAOF00020000000503" target=_blank>AOL.com</A>.
</FONT></DIV>
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