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<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff
size=2>Dan,</FONT></SPAN></DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff size=2>I
would go with the 91FX rather than the 91Surpass II pump. Eddie used YS 91
prior to YS 110. 91FX does not have to run faster rpm.
</FONT></SPAN></DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff size=2>If you
have a perry pump, it will be better. If you like to work on the plane a
little more, go with a muffled tuned pipe. </FONT></SPAN></DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff size=2>There
are several people using tuned piped setups for the Excelleron
90s.</FONT></SPAN></DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff size=2>My
91SX w/ tuned pipe setup may need some weight in the nose, but not sure
yet.</FONT></SPAN></DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=539185908-06012005><FONT face=Arial color=#0000ff
size=2>Ihncheol Park</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>Daniel J.
Hamlett<BR><B>Sent:</B> Wednesday, January 05, 2005 10:20 PM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> Which Engine Should I use
???<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>I am going to be putting together an Exceleron
90. I have 2 different engine options. First is an OS FX91, second
is an OS FS91 Surpass w/pump. Both are NIB. I have flow previous
planes with a different 91FRX. I am good with engines so I am not
worried about any finicky engine issues with either one. I have 2 two
meter planes right now. This plane is one that I want to be able to get
home from work, grab it and go. The 2 meter planes take a little bit
more preparation to get them going quickly. I want the plane to fly well
with a good power curve. I know that the 91FX will want to be flown a
little bit faster, but how much I don't know. Also would the FS91 II
Surpass be enough to fly the plane well. I will most likely be flying
the intermediate pattern next year, so it doesn't have to be oh my God
outrageous performance. But I don't want tit to be a dog
either.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>If there is anybody with any time on this plane
that could shed some light on the situation it would be greatly
appreciated.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Dan</FONT></DIV>
<DIV><FONT face=Arial size=2>Dst. 1</FONT></DIV></BLOCKQUOTE></BODY></HTML>