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<TITLE>Re: Need Help on YS 61R Long Stroke!!!</TITLE>
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<DIV><SPAN class=618444818-28042003>Mobil 1 is diapraghm safe and is a great
corrosion inhibitor. Right Eric?</SPAN></DIV>
<DIV><SPAN class=618444818-28042003>Dean</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> jed241@msn.com
[mailto:jed241@msn.com]<BR><B>Sent:</B> Monday, April 28, 2003 1:21
PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> Re: Need Help on YS
61R Long Stroke!!!<BR><BR></FONT></DIV>
<DIV>To all those that replied…</DIV>
<DIV> </DIV>
<DIV>Having the luxury of living 3 miles from my office, I came home for lunch
and promptly opened up the regulator body.</DIV>
<DIV> </DIV>
<DIV>Although there was no sign of swelling or disfigurement in the diaphragm,
I did note a very fine hairline crack where the diaphragm contacts
the ridge of the seat for a seal. It was in a number of places around the edge
of the diaphragm. You really need to look close as it wasn't apparent
until I pulled at the side gently. I promise from this point forward to never,
ever, use Prather in my YS engines. The YS Gods were not pleased with
me…ahh…<VBG></DIV>
<DIV> </DIV>
<DIV>I did replace the diaphragm and plunger while I was at it and noted it
was fairly clean. I will try it as soon as the weather clears. Might have to
wait for the weekend due to rain.</DIV>
<DIV> </DIV>
<DIV>Since I have three of these engines and would like to keep them
operational, where can I get replacement parts?</DIV>
<DIV> </DIV>
<DIV>YS1125 - Regulator Gasket (Need to replace this one now, plus a couple of
spares)</DIV>
<DIV>YS1145 - Plunger</DIV>
<DIV>YS1130 - Diaphragm</DIV>
<DIV>YS1150 - Regulator Spring</DIV>
<DIV> </DIV>
<DIV>Or any other gasket sets for the YS 61R LS…</DIV>
<DIV> </DIV>
<DIV>Thanks to everyone that replied. I will let you know how it runs when I
get the chance..</DIV>
<DIV> </DIV>
<DIV>Larry</DIV>
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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="FONT: 10pt arial"><B>From:</B> <A title=PatternFlyer@msn.com
href="mailto:PatternFlyer@msn.com">Ihncheol Park</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> Monday, April 28, 2003 8:07
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Need Help on YS 61R Long
Stroke!!!</DIV>
<DIV><BR></DIV>
<DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff>Bill, It
was actually for Larry,</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial
color=#0000ff>Larry,</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial color=#0000ff>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>Troy
Newman, Bill Carpenter, and others including myself.</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial
color=#0000ff>Ihncheol</FONT></SPAN></DIV>
<DIV><SPAN class=790070513-28042003><FONT face=Arial
color=#0000ff></FONT></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> <A
href="mailto:discussion-request@nsrca.org">discussion-request@nsrca.org</A>
[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></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>