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<DIV><SPAN class=552162506-28042003>OOps, </SPAN></DIV>
<DIV><SPAN class=552162506-28042003>wrong click on the last one.</SPAN></DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003>I am not an expert, but here
goes.</SPAN></DIV>
<DIV><SPAN class=552162506-28042003>The idle is still a little too high.
My YS 61LS idled at 2000rpm with 13x8. I could go lower.</SPAN></DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003>Have you checked the Diaphragm?</SPAN></DIV>
<DIV><SPAN class=552162506-28042003><SPAN class=552162506-28042003>As basic
maintenance, cleaning the needle valve assembly is also a good
idea.</SPAN></SPAN></DIV>
<DIV><SPAN class=552162506-28042003><SPAN
class=552162506-28042003></SPAN></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003>When I take out a previously stored engine,
I try to clean out the oil (I use Mobile 1 Synthetic oil) with fuel.
Remove glow plug, use starter to turn the engine that was hand primed before
using starter. Flood it so that the old oil get mixed with fuel and
drained out to plug hole. (Make sure to cover the plug hole with rag to
prevent fuel/oil splash).</SPAN></DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003>I am not sure about Prather's after run
oil. never tried it.</SPAN></DIV>
<DIV><SPAN class=552162506-28042003>Also, I don't use castor anymore. I
had to clean one of OS pump because of the castor residue. </SPAN></DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003>Hope this helps,</SPAN></DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003>Ihncheol</SPAN></DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003></SPAN> </DIV>
<DIV><SPAN class=552162506-28042003></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>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org]<B>On Behalf
Of </B>jed241@msn.com<BR><B>Sent:</B> Sunday, April 27, 2003 7:18
PM<BR><B>To:</B> NSRCA<BR><B>Subject:</B> Need Help on YS 61R Long
Stroke!!!<BR><BR></FONT></DIV>
<DIV>I'm having problems with the engine leaning out on transition to full
throttle. The engine is in a 60 size pattern plane. The set up is
unchanged from when I bought it. However, both engines have been sitting
in a sealed bag after a good oiling with prather after run oil.</DIV>
<DIV> </DIV>
<DIV>The pressure in the tank is fine and builds up to 6psi, measured on
a pressure gauge. I'm confident that there is no air leak as it holds the
pressure in the tank. Idle seemed to be very steady with no sign of dying at
2,700rpm. Would also like to know where the reliable idle RPM is..</DIV>
<DIV> </DIV>
<DIV>I allowed the engine to run for about 15 to 20 seconds at about
4,000rpm and as I slowly increased to half throttle or about
7,500rpm, it would immediately die. I took the head temp and it was about
250F. I changed the engine out with a back up and it did the same exact
thing. Again, same results on both engines. I also change the glow plug and as
expected it didn't change anything. I haven't checked the fuel
filter, but I will shortly. The regulator is adjusted to flush with the
case.</DIV>
<DIV> </DIV>
<DIV>The original engine had about 25 flight on it ,and the back up is a
brand new rebuild with new piston, sleeve, bearings, etc…)</DIV>
<DIV> </DIV>
<DIV>Setting aside the fuel filter, is there anything else that I'm
missing?</DIV>
<DIV> </DIV>
<DIV>Wildcat 15% Nitro w/ 18% Oil (80% Synthetic/ 20% Castor) </DIV>
<DIV>12x11N APC Prop</DIV>
<DIV>Hatori Pipe</DIV>
<DIV>OS #8 Plug</DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV> </DIV>
<DIV>Larry</DIV>
<DIV>NSRCA 3083</DIV>
<DIV>AMA 5024<BR></DIV></BLOCKQUOTE></BODY></HTML>