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<DIV><FONT face=Arial size=2>Amar,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>by the numbers you have given I'm guessing you are
only using 15-20% Nitro....Up at altitude 6000ft we run the 140L at about 1 turn
open on 25% nitro....Reason less air needs less fuel....The problem is I bet you
might be turning too much prop......Try a little less prop and get your RPMS up
a bit...A 15-12W is a good one.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>More nitro is always a good thing too....Nitro
helps the idle consistence....If the motor has some time on it it might be do
for a new ring...I would say about 200-300 flights depending on the level of
use-abuse.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Richard at at YS will hook you up.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Troy Newman</FONT></DIV>
<BLOCKQUOTE dir=ltr
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=shan@smartt.com href="mailto:shan@smartt.com">Amar Shan</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> Thursday, September 19, 2002 12:28
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RPM turned by YS-140L on Mezlik
16-12?</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">Hello all,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">I am running a YS-140L with a <SPAN
class=SpellE>Mezlik</SPAN> 16-12 in a Python which I have recently
re-introduced to the air.<SPAN style="mso-spacerun: yes"> </SPAN>The
engine seems to run ok, but feels very anemic in the air, which prompts me to
wonder whether it’s just a heavier, <SPAN class=SpellE>draggier</SPAN> plane
than I’m used to (<SPAN class=GramE>was</SPAN> flying an Olympian) or whether
the engine isn’t running quite right.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">A few observations:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN-LEFT: 0.5in; TEXT-INDENT: -0.25in; mso-list: l1 level1 lfo2; tab-stops: list .5in"><![if !supportLists]><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><SPAN
style="mso-list: Ignore">-<FONT face="Times New Roman" size=1><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></FONT></SPAN></SPAN></FONT><![endif]>The engine is turning ~ 7800-8000
rpm on the ground.<o:p></o:p></P>
<P class=MsoNormal
style="MARGIN-LEFT: 0.5in; TEXT-INDENT: -0.25in; mso-list: l1 level1 lfo2; tab-stops: list .5in"><![if !supportLists]><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><SPAN
style="mso-list: Ignore">-<FONT face="Times New Roman" size=1><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></FONT></SPAN></SPAN></FONT><![endif]>With the regulator set flush,
high end needle is only out about ¾ of a turn?!?<o:p></o:p></P>
<P class=MsoNormal
style="MARGIN-LEFT: 0.5in; TEXT-INDENT: -0.25in; mso-list: l1 level1 lfo2; tab-stops: list .5in"><![if !supportLists]><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><SPAN
style="mso-list: Ignore">-<FONT face="Times New Roman" size=1><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></FONT></SPAN></SPAN></FONT><![endif]>Transition is decent; however,
when throttling down from high rpm to idle, the engine doesn’t seem to ever
return to the same idle.<SPAN style="mso-spacerun: yes">
</SPAN><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">Is the engine producing its expected power?<SPAN
style="mso-spacerun: yes"> </SPAN>If not, any suggestions as to where to
begin looking for problems?<SPAN style="mso-spacerun: yes">
</SPAN>Replace all the gaskets first?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">Thanks in advance,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">Amar<o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>