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<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff size=2>Bill,
It was actually for Larry,</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff
size=2>Larry,</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff size=2>It
looks like almost everyone is telling you to check out the
Diaphragm.</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff size=2>Troy
Newman, Bill Carpenter, and others including myself.</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff
size=2>Ihncheol</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org]<B>On Behalf Of </B>Bill
Carpenter<BR><B>Sent:</B> Monday, April 28, 2003 4:44 AM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> Re: Need Help on YS 61R Long
Stroke!!!<BR><BR></FONT></DIV>Ihncheol,<BR><BR>You probably ruined your
diaphragm with the after run oil - you can only use a non petroleum based oil
like Ultra Oil. Replace it and try the following setup:<BR><BR>APC 13X10
(windy conditions) or 13 1/2X10 (calm days) prop.<BR>15% nitro.<BR>O.S. #8
plug or K&B 1L.<BR>Hatori 650 pipe.<BR>>From the glow plug to the first
ring on the pipe measure 20 inches straight back.<BR><BR>This should idle way
down and provide plenty of power for any airplane up to about 9 lbs. dry.
Throttle transition S/B excellent and downlines can be very slow with
the larger prop at low idle. <BR><BR>Hope this helps, Bill
<BR><BR><BR>----------<BR>From: "Ihncheol Park"
<PatternFlyer@msn.com><BR>To: <discussion@nsrca.org><BR>Subject:
RE: Need Help on YS 61R Long Stroke!!!<BR>Date: Mon, Apr 28, 2003, 1:37
AM<BR><BR><BR>
<BLOCKQUOTE>OOps, <BR>wrong click on the last one.<BR> <BR>I am not an
expert, but here goes.<BR>The idle is still a little too high. My YS
61LS idled at 2000rpm with 13x8. I could go lower.<BR> <BR>Have
you checked the Diaphragm?<BR>As basic maintenance, cleaning the needle
valve assembly is also a good idea.<BR> <BR>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).<BR> <BR>I
am not sure about Prather's after run oil. never tried it.<BR>Also, I
don't use castor anymore. I had to clean one of OS pump because of the
castor residue. <BR> <BR>Hope this
helps,<BR> <BR>Ihncheol<BR> <BR> <BR> <BR> <BR>
<BLOCKQUOTE>-----Original Message-----<BR><B>From:</B> <FONT
color=#0000ff><U>discussion-request@nsrca.org</U></FONT> [<FONT
color=#0000ff><U>mailto:discussion-request@nsrca.org</U></FONT>]<B>On
Behalf Of </B><FONT
color=#0000ff><U>jed241@msn.com<BR></U></FONT><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>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.<BR> <BR>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..<BR> <BR>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.<BR> <BR>The original engine had about 25 flight on it
,and the back up is a brand new rebuild with new piston, sleeve, bearings,
etc…)<BR> <BR>Setting aside the fuel filter, is there anything else
that I'm missing?<BR> <BR>Wildcat 15% Nitro w/ 18% Oil (80%
Synthetic/ 20% Castor) <BR>12x11N APC Prop<BR>Hatori Pipe<BR>OS #8
Plug<BR> <BR>Thanks,<BR> <BR>Larry<BR>NSRCA 3083<BR>AMA
5024<BR><BR></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>