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<DIV><SPAN class=187332903-03072006>Hi Guys,</SPAN></DIV>
<DIV><SPAN class=187332903-03072006>Please dont take this the wrong way and I
dont want to rain on your parade-but...</SPAN></DIV>
<DIV><SPAN class=187332903-03072006></SPAN> </DIV>
<DIV><SPAN class=187332903-03072006>I dont think it's as simple as what you say.
May I ask why you are pouring castor oil in there? ( OK I know
why..but...)</SPAN></DIV>
<DIV><SPAN class=187332903-03072006>I have seen/experienced symptoms like you
describe-but generally in motors where the set-up parameters may not be optimal.
Ie; pipe too short and prop too big and no crankcase cooling, wronfg fuel and
compression ratio.</SPAN></DIV>
<DIV><SPAN class=187332903-03072006></SPAN> </DIV>
<DIV><SPAN class=187332903-03072006>No crankcase cooling can cause the pump to
get too hot and boil fuel. This shows up as all sorts of symptoms and genarally
causes havoc. Also, if that engine is getting too hot whatever castor you
have left in there will burn, perhaps causing a varnish build up and the
rest is history.</SPAN></DIV>
<DIV><SPAN class=187332903-03072006></SPAN> </DIV>
<DIV><SPAN class=187332903-03072006>However all bearings will wear and the big 2
strokes usually let you know when the idle suddenly turns to custard. Then you
must immediately change bearings.</SPAN></DIV>
<DIV> </DIV>
<DIV>C<SPAN class=187332903-03072006>heck over all possibilities-the Japaneses
usually know what they are doing ( and if they dont-they'll never admit anyway)
but down here, all the OS's run perfectly once the set-ups are correct.Having
said that -expect to change bearings every 50-100 flights depending on climatic
conditions.</SPAN></DIV>
<DIV><SPAN class=187332903-03072006></SPAN> </DIV>
<DIV><SPAN class=187332903-03072006>Ofcourse I place a caveat on this- I use a
YS <VBG></SPAN></DIV>
<DIV><SPAN class=187332903-03072006></SPAN> </DIV>
<DIV><SPAN class=187332903-03072006>Good luck and best regards</SPAN></DIV>
<DIV><SPAN class=187332903-03072006></SPAN> </DIV>
<DIV><SPAN class=187332903-03072006>Tom</SPAN></DIV>
<DIV><SPAN class=187332903-03072006></SPAN> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>R.
LIPRIE<BR><B>Sent:</B> Monday, 3 July 2006 1:21 PM<BR><B>To:</B> NSRCA Mailing
List<BR><B>Subject:</B> Re: [NSRCA-discussion] Bearing tip for OS 1.40
RX<BR><BR></FONT></DIV>
<DIV>You no Ed,</DIV>
<DIV> </DIV>
<DIV> You are as right
as anyone could be. OS is a very good engine without that dang piece of
junk ball bearing. And I I've made complaints and I no I'm not the only one
that has. But I don't no why they keep putting that thing in there. They do no
what that bearing does. But like I told them you would get better sells
of your engines if you would put the good ball bearing in there. Because
everyone is starting to find out that the OS ball bearing that is stock is
junk. So everyone just keep complaining.</DIV>
<DIV> </DIV>
<DIV align=center>Matt</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=ed_alt@hotmail.com href="mailto:ed_alt@hotmail.com">Ed Alt</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> Sunday, July 02, 2006 10:09
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Bearing tip
for OS 1.40 RX</DIV>
<DIV><BR></DIV>
<DIV>This is an FYI for anyone with a new OS 1.40 RX. Thinking about
running with the stock bearing for even a short time? Think
again. I was anxious to get a new model flying for this weekend and
decided not to take the time to first swap out the junk stock bearing
in a new RX. I figured if I dosed it with after run oil after
every flight I could get through he weekend and then do the mandatory swap
to a sealed bearing. Here's the full history. </DIV>
<DIV> </DIV>
<DIV>Friday, June 30 I did two break in runs on the ground. Didn't do
any after run between these two runs. They were only 30 minutes apart.
What could happen?. Another 30 minutes after the 2nd break in run, did
a short flight. Had a transmitter trim lever problem, landed quickly,
de-fueled, ran it dry, literally ran nearly 20 squirts of Amsoil Metal
Protector through it. Doused it. Got it home, added a full carb
barrel of castor oil for good measure and worked it through. Yeah,
that ought to do it. Dehumidifier running all day, all night in the
basement...</DIV>
<DIV> </DIV>
<DIV>Saturday, July 1 dawns. Bearings still feel OK. Head to the
field. Fly. Work a carb barrel of castor through it.
Repeat for 3 more flights. Note that the bearing is starting to feel
rough already. Take it home, swap for a sealed bearing. Note
that the bearing is rusted already and that the crankshaft has light
scoring from the inner race turning on it. 7 runs, handled like a
newborn baby.</DIV>
<DIV> </DIV>
<DIV>IMO, it is a disgrace that OS continues to produce this engine with a
trash bearing that can't stand up to even the most careful use for more than
a day. They KNOW what should be in there, since they do it for the EFI
version. Lesson learned, if I ever do use another new RX, I'll never
again make the mistake of doing even a single run without first swapping the
main bearing. It's not like the sealed bearing is all that expensive
either. I get them locally for a little over $11 each and they work
great. You don't even have to waste money on an overpriced Boca or EFI
verson from Tower.</DIV>
<DIV> </DIV>
<DIV>Ed</DIV>
<P> </P>
<P>
<HR>
<P></P>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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