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<p class=MsoNormal><span class=EmailStyle19><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>16 x 10
should be no problem. I have run one all season with stock muffler. I didn’t
like how many RPM’s the 16 x 8 turned in horizontal flight.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle19><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>This may
be a little off subject but may be of interest to other 120AX users.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle19><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>I fought a
rich midrange (poor transition) from day one in order to keep from running too
lean on a long vertical pull, which seamed to get worse in cool air. I have two
motors that have different carburetors and focused on this as a problem even
though both acted similar eventually concluding that there wasn’t enough
muffler pressure. I have never gotten along well with pumps so I tried
restricting the muffler outlet using a short exhaust tube (3/8” ID) with a
brass tube insert. I tried a couple different sizes settling on 13/32 OD, which
is pinched on the end from cutting with a tubing cutter (.350” ID). Flaring the
other end keeps it in the exhaust tube without clamps. I also tried an OS-“F”
plug which I thing may be better than the #8. It will be 9 months before I can run
it in hot weather but I was able to run leaner without starving in the
verticals and the transition is immediate.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle19><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Jim Hiller<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle19><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Spokane<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle19><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<b><span style='font-weight:
bold'>On Behalf Of </span></b>Ed Alt<br>
<b><span style='font-weight:bold'>Sent:</span></b> Saturday, October 06, 2007
5:44 AM<br>
<b><span style='font-weight:bold'>To:</span></b> 'NSRCA Mailing List'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion] OS
120AX header?</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Sorry about the loss of
your plane Jon. I can post results with different props when I get things
together next weekend. The combo will be the 120AX, a KM wrap header, a
medium ES pipe. I’m looking to see if this will handle a 16x10, which I suspect
it will.</span></font><font color=black><span style='color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Ed</span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>JonLowe@aol.com<br>
<b><span style='font-weight:bold'>Sent:</span></b> Saturday, October 06, 2007
7:33 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
nsrca-discussion@lists.nsrca.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion] OS
120AX header?</span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>In a
message dated 10/3/2007 10:22:13 AM Central Daylight Time,
jnhiller@earthlink.net writes:</span></font><font color=black><span
style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:.5in;margin-bottom:
0in;margin-left:75.75pt;margin-bottom:.0001pt;border:none;mso-border-left-alt:
solid blue 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'>Jon, I will be building a new airplane this winter and I am
considering using a pipe. I want it to be masters capable and a little more
power won't hurt. What pipe are you using? Are you using a pump? What size
prop? <br>
Thanks<br>
Jim Hiller</span></font><font color=black><span style='color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>I'm
using a Macs 1092 Quiet pipe, Perry pump, and a 16x8 prop. Was still
experimenting with the prop and pipe length when I lost the plane.</span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=black
face=Arial PTSIZE=10><span style='font-size:10.0pt;font-family:Arial;
color:black'>Jon Lowe</span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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style='font-size:12.0pt;color:black'><![if !supportEmptyParas]> <![endif]></span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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<hr size=2 width="100%" align=center>
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<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>See
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Homepage</a>.</span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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