<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2737.800" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>With specific reference to the OS140, I gotta agree
- use the sealed SS BB with both seals. I've seen 500+
flights.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm also concluding that much of the damage to rear
bearings is from running the engines overcompressed resulting in pre-ignition
(detonation, pinging, etc). I just changed the stock bearing in a Webra160
after about 400 flights - all with the compression substantially reduced.
Several years ago, a Bully (Webra) 145 I ran needed new bearings every 100-150
flights, and was relatively much more compressed.</FONT></DIV><FONT face=Arial
size=2>
<DIV><BR>Dave</DIV>
<DIV></FONT> </DIV>
<BLOCKQUOTE dir=ltr
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=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">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, May 19, 2005 11:18
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [SPAM] Re: A Bearing Tip -
Boca Bearing Newsletter</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial>Rodney, </FONT></DIV>
<DIV><FONT face=Arial>If you're putting it in an O.S. 1.4, definitely leave
the seals in. You'll get 300-500 flights with the seals in. With them out,
you'll be lucky to put 5 gallons through the engine before they're
shot!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Verne Koester</FONT></DIV>
<BLOCKQUOTE dir=ltr
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=rodney19821982@yahoo.com
href="mailto:rodney19821982@yahoo.com">Rodney Tanner</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> Thursday, May 19, 2005 10:33
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [SPAM] Re: A Bearing Tip -
Boca Bearing Newsletter</DIV>
<DIV><BR></DIV>
<DIV>Bob, So using an OS 140 EFI bearing, is it advisable to remove the
seals?</DIV>
<DIV>Rodney<BR><BR><B><I>Bob Pastorello <<A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A>></I></B>
wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">
<META content="MSHTML 6.00.2900.2627" name=GENERATOR>
<STYLE></STYLE>
<DIV><FONT face=Arial size=2>Since I use theirs, I get this
e-newsletter. This month's tip;</FONT></DIV>
<DIV><FONT face=Arial size=2><<If your Front engine bearing has two
rubber seals you should not remove them. These bearings have their own
grease and can help stop oil leaks. If your bearing has two shields, we
recommend you remove one of them. For instructions on removing your
shields take a look at this <A class=fpbodylink
href="http://www.bocabearings.com/main1.aspx?p=help#six">Help
Section</A>.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Your Rear engine bearing should be open on
both sides to allow as much fuel as possible to pass through and act as a
lubricant. You may however want leave one shield on in the rear which
would help to protect the rest of the engine from any foreign matter
getting through. This should not be done with one seal. If you find your
engine is stingy in getting fuel to the rear, you should definitely leave
the bearing open.</DIV>
<P class=body2><SPAN class=body2>In our next issue of the Boca Bearings
Tips & Advice </SPAN>Newsletter we will show you how to remove your
bearing shields. >></P>
<P class=body2>Note - if you open your crankcase, using sealed bearings,
and the crankshaft counterweight it dry-looking, or the lower part of the
bearing isn't pooling oil, you may think about removing the seals. I
do, for this reason.</P></FONT>
<DIV><FONT face=Arial size=2><BR>Bob Pastorello<BR><A
href="http://www.rcaerobats.net/">www.rcaerobats.net</A><BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A></FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>