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<DIV><FONT face=Arial size=2>Scot</FONT></DIV>
<DIV><FONT face=Arial size=2>I don't know if you keep old messages or delete
them -so I'll copy one here for you.</FONT></DIV>
<DIV><FONT face=Arial size=2>Nat Penton posted the foollowing info on 10-25-03
:</FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>>Matt I will
add additional info. Have been running the 91FX over two years<BR>>and
it will carry my 8+ lb airplanes to the moon. On fuel - was using<BR>>Ritches
20%, now 30%,idles under 1500. <U>Pipe length- 26 to 28" depending
on<BR>>which pipe, most power from ES 2 stk(1 9/16 OD),</U> Favorite props
17X10N cut<BR>>to16" and 15.5X12, rpms around 7700. Using Hanno (same as
140RX) backplate<BR>>pump. Can be installed with simple tools and a little
ingenuity. O yes 2<BR>>headshims. Stock bearings good for about 30 flts, Boca
sealed well over 100,<BR>>leave all seals in place. Provide crankcase cooling
for longer bearing life.<BR>>Have not tried 15CC Hatori or MACS but plan to.
Headers are from Karl<BR>>Mueller,very nice.</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>if you start
with the 15X10 prop and work up you might be surprised at the power with the
longer pipe settings.</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3>Eddie</FONT></DIV>
<DIV><BR></DIV></FONT>
<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=scott@rcpattern.com href="mailto:scott@rcpattern.com">Scott
Anderson</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> Saturday, November 01, 2003 8:36
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: OS 91 engine info</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Thank you for the reply, I'm still in the tuning
phase also right now with a OS 91 fx and using the Karl Mueller header and a
macs pipe (1062), I'm running 25% cool power with a 14x10 and 15x10 prop.
</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=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> Friday, October 31, 2003 10:42
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: OS 91 engine info</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=676273903-01112003><FONT face=Arial color=#0000ff
size=2>Hi, Scott,</FONT></SPAN></DIV>
<DIV><SPAN class=676273903-01112003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=676273903-01112003><FONT face=Arial color=#0000ff size=2>My
91 SX-H with standard Macs Products' 91FX header and Blue Bird 140 2C pipe
(not available in the states anymore) turns APC 15x8 @ 10250 @21.6"
from glow plug to first baffle. Not all tuned yet. This is with
Magnum #1 or Coolpower 25%. I don't remember which fuel I used when
measured this.</FONT></SPAN></DIV>
<DIV><SPAN class=676273903-01112003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=676273903-01112003><FONT face=Arial color=#0000ff
size=2>Hope this helps,</FONT></SPAN></DIV>
<DIV><SPAN class=676273903-01112003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=676273903-01112003><FONT face=Arial color=#0000ff
size=2>Ihncheol Park</FONT></SPAN></DIV>
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<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>Scott Anderson<BR><B>Sent:</B> Thursday, October 30, 2003
4:56 AM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> OS 91 engine
info<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Good Morning,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I see that there was some info being kicked
around about the os91 2 stroke engine with props and a head shim, but what
is the pipe length to first baffle from glow plug ( straight line).
</FONT></DIV>
<DIV><FONT face=Arial size=2>Thanks..</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>scott</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>