<!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 6.00.6000.16674" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial"
bottomMargin=7 bgColor=#ffffff leftMargin=7 topMargin=7 rightMargin=7>
<DIV>Not that I know all about YS but I would be looking for an air leak.
Something is opening a gap or separating when the engine gets hot making it
hotter and loosing throttle response. I know you have check a lot of
things but check for loose screws or broken head look at the carb needle
o-ring or the throttle butterfly seal for a split or the screw in the back
of the carb for tightness. I don't think it is internal to the engine but with
so many possibilities?? I once found that grabbing the motor to loosen a head
bolt I actually dislocated a pushrod housing from the o-ring. Every looked ok
but it was leaking air thru it. Just my thoughts,</DIV>
<DIV> </DIV>
<DIV>Ken</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=RUDDERCABL@aol.com
href="mailto:RUDDERCABL@aol.com">RUDDERCABL@aol.com</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-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, July 15, 2008 10:15
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] 120 AC
issues Not the Piston</DIV>
<DIV><BR></DIV><FONT id=role_document face=Arial color=#000000 size=2>
<DIV>
<DIV>In a message dated 7/15/2008 3:15:33 PM Eastern Daylight Time, <A
href="mailto:schale@optonline.net">schale@optonline.net</A> writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000
size=2>exchanged the piston and ring for a brand new one out of an unrun
<BR>motor. Basically no change. So either both pistons are bad
or it is <BR>something else.<BR>I pulled a motor that ran fine out of my
Asteris Omen. Motor has little <BR>time after a Futaba warranty
rebuild way back when. Most of the <BR>internal parts were
new. It ran fine when I started flying again 3 <BR>years ago.
Put it in the Dalotel and ran it for 7 minutes no
issues.</FONT></BLOCKQUOTE></DIV>
<DIV></DIV>
<DIV>Stu</DIV>
<DIV> </DIV>
<DIV>Aparently , it wasn't the pipe as I had suggested. Have you checked the
fuel line inside of the tank and the clunk ? </DIV>
<DIV> </DIV>
<DIV>I wish you hadn't fallen into the fuel trap. 30% heli fuel isn't the
answer for all YS engines. Remember , the AC engines were around long before
that fuel and ran great without it. Any high quality 20 or 25 % all synthetic
fuel should run just fine.</DIV>
<DIV> </DIV>
<DIV>Robert</DIV></FONT><BR><BR><BR>
<DIV><FONT style="FONT: 10pt ARIAL, SAN-SERIF; COLOR: black">
<HR style="MARGIN-TOP: 10px">
Get the scoop on last night's hottest shows and the live music scene in your
area - <A title=http://www.tourtracker.com?NCID=aolmus00050000000112
href="http://www.tourtracker.com?NCID=aolmus00050000000112"
target=_blank>Check out TourTracker.com</A>!</FONT></DIV>
<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></BODY></HTML>