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<DIV><SPAN class=891510121-12102004>Hi Chris,</SPAN></DIV>
<DIV><SPAN class=891510121-12102004>With SS bearings in an OS 140 RX we are
seeing several hundred flight life. That's with Stanley's 15% (S&W) and
Amsoil MP after-run.</SPAN></DIV>
<DIV><SPAN class=891510121-12102004>Hello to the clan ...</SPAN></DIV>
<DIV><SPAN class=891510121-12102004> Dean</SPAN></DIV>
<DIV> </DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT
face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT
face="Times New Roman">Kodeos Communications</FONT> <BR><FONT
face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT
face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT
face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT
face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT
face="Times New Roman">d.pappas@kodeos.com</FONT> </P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org]<B>On Behalf
Of </B>XCellHeli@aol.com<BR><B>Sent:</B> Tuesday, October 12, 2004 4:16
PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B>
Rust<BR><BR></FONT></DIV>
<DIV>RE: OS 1.40 rear bearing rust - by Bax OS Factory Engine
Support<BR>~~~~~~~~~~~~~~<BR><BR>On a Pattern engine, being flown in a Pattern
airplane, 100 flights would be about normal for bearing wear. A
competitive Pattern flyer will need to change out the bearings 1-2 times per
flying season (depending upon how much practice time is
spent).<BR><BR>Corrosion is caused by model fuel. The alcohol in the
fuel absorbs water. Synthetic oils are slightly acidic and are not
corrosion preventers, they are lubricants. The two are not necessarily
the same. Some spent combustion products always work themselves into the
lower-end of the engine and they are slightly acidic. This encourages
corrosion by providing an electrolyte between the dissimilar metals in the
engine (aluminum and steel).<BR><BR>You need to run the engine dry of fuel at
the end of each flying session, and then flood the engine with an after-run
product. One of the hobby blends of after run oil, Marvel Mystery Oil,
automatic transmission fluid, non-graphite gun oil, a good coating-type
machine tool oil...all will work well.<BR><BR>If the fuel has more than
25%-50% of the oil blend being castor oil, you'll also get significant
corrosion protection. Engines run on all-castor fuels don't get much
corrosion, but you do have to clean the engine to remove the varnish buildup
from the castor oil. It also will become gummy when it sits for a long
time. <BR><BR><BR>----------- End of Message -------------<BR><BR>The message
can be located
at:<BR><BR>http://www.rcuniverse.com/forum/fb.asp?m=1802477<BR><BR><BR>AOL
users click <A title=http://www.rcuniverse.com/forum/fb.asp?m=1802477
href="http://www.rcuniverse.com/forum/fb.asp?m=1802477">here</A> to view the
thread<BR></DIV>
<DIV>Chris Dansereau Sr.</DIV>
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