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<DIV><FONT size=2>Those of us who ran the old OS 61 RF's, pumped or not,
remember when bearings lasted forever....UNTIL we started putting high pitch,
high diameter props on the beasts.</FONT></DIV>
<DIV><FONT size=2> Now, we've just added more pitch and
diameter over the years, and my experience has been that bearing life relates
directly to those factors. Of course lubrication, and moisture, certainly
contribute, but most bearings I've dissassembled have had the balls and races
brinnelled and beaten to death. </FONT></DIV>
<DIV><FONT size=2> That starts plating flaking, and eats
things...it could just be coincidence that they rust, too....</FONT></DIV>
<DIV><BR>Bob Pastorello, Oklahoma<BR>NSRCA 199, IMAC 1320, AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mdarr00@comcast.net
href="mailto:mdarr00@comcast.net">mdarr00@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, July 04, 2003 2:43 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: O.S. 1.4 RX bearings</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2> Dave, I could not agree with you
more!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Mike Darr</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=dfs@navnet.net href="mailto:dfs@navnet.net">Dave Smith</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, July 04, 2003 3:22
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: O.S. 1.4 RX bearings</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Verne: Based on my experience with
the YS .60 & .61 two strokes,the grease will disappear very soon,even
with two seals intact. </FONT></DIV>
<DIV><FONT face=Arial size=2>I don't think lubrication is the problem,or the
cure. The rear bearing is just too small.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>It seems this size bearing started out in life
as the bearing for the 1.08. It makes no sense to me that a
bearing for a rather mild 1.08 would stand up to the rigors of a
1.40.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Good luck,,,,,,,,,,,,,Dave</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=verne@twmi.rr.com href="mailto:verne@twmi.rr.com">Verne
Koester</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">NSRCA</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, July 04, 2003 4:03
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> O.S. 1.4 RX bearings</DIV>
<DIV><BR></DIV>
<DIV><FONT size=4>Anybody out there try running the O.S. 1.4RX rear
bearing with the shields intact? It seems to me that the design doesn't
allow enough oil to get to the bearing. Keeping the case cool would help
matters but I'm not sure it's the total or only solution to the bearing
life problems. Seems like I read where the EFI version uses a stainless
bearing with seals. If so, they'd obviously have to be packed with grease
like the front bearing and from what I've read on this list, the front
bearing never seems to wear out. Granted, it doesn't take the pounding
experienced by the rear bearing, but it should be getting very nearly as
hot. Maybe the trick is using a sealed bearing packed with grease? I'm
going to give it a try and I'll keep ya posted.</FONT></DIV>
<DIV><FONT size=4></FONT> </DIV>
<DIV><FONT
size=4>Verne</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>