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<DIV><FONT face=Arial color=#000000 size=2>My two cents worth....</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2>That is the first time I have heard
of that much prop on a Sport 140. It is way too much prop for break in of a new
engine. I don't know if there is any damage due to that load. I use about 40
ounces of fuel on tat engine to break it in with a 15-10 prop at about 8200 rpm.
</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>I feel the bigger prop will
generate more heat and will need more latitude for mixture
control than the YS system provides. When more prop than a 15-12 or 16-10 is
used on a YS 140 engine</FONT> <FONT face=Arial color=#000000 size=2>(not
DZ!) more nitro is needed. There is more oxygen available in the higher nitro
fuel so you have a wider needle available.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>BTW, what is the max rpm you get out
of a 17-10 with 20% fuel?</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></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="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=d77hamlett@comcast.net href="mailto:d77hamlett@comcast.net">Daniel J.
Hamlett</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, July 14, 2005 10:06
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: YS 140 problem</DIV>
<DIV><BR></DIV>The engine is a sport. It has less than 40oz through
it. I am running the 1.40, NHP 5/8th header and ES carbon 5/8th
inlet pipe. Sorry I forgot to add this on the original post.<BR><BR>Bob
Kane wrote:
<BLOCKQUOTE cite=mid20050715014727.18342.qmail@web30203.mail.mud.yahoo.com
type="cite"><PRE wrap="">Which 140? FZ, L, DZ, Sport? I assume it must be a
DZ swinging a 17X10?
</PRE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>