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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Gray,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> I do have the pump mod
specified by Lance. I did that before running the engine. I’m definitely worried
about the damage due to backfire </span></font><font size=2 color=navy
face=Wingdings><span style='font-size:10.0pt;font-family:Wingdings;color:navy'>L</span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'> I also have the upgraded con rod. As for being sure the pump is
functioning, can you give me a good test for this? I could easily be convinced
that it is somehow not putting out the pressure it should, given where I am on
the adjustments. As I said in another post, the pump was disassembled and
checked by Mike Darr from <st1:State w:st="on"><st1:place w:st="on">Michigan</st1:place></st1:State>,
who has run the engine quite a bit, and who helped me track down the original carb
issue. We didn’t see any problems then, and the engine has very little time on
it since then.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks for the suggestions.</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p><font size=3 color=navy face="Comic Sans MS"><span style='font-size:12.0pt;
font-family:"Comic Sans MS";color:navy'>Tim Pascoe</span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Gray E Fowler<br>
<b><span style='font-weight:bold'>Sent:</span></b> August 3, 2006 10:39 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]
Mintor 1.70 Question</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
</span></font><font size=2 face=sans-serif><span style='font-size:10.0pt;
font-family:sans-serif'>Tim</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>Are
you sure that the pump is functioning? The backfire is a sign of lean mid and
will damage the CF pipe baffles. During the hot summer, the pump can get very
hot. Do you have the pump insulator modification on your engine? Mintor
designed this at Lance's request, as the Texans discovered this problem flying
in 100F+ temps that exceed European climates.</span></font> <br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
<br>
<br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radome and Composites Engineering<br>
Raytheon</span></font> <br>
<br>
<o:p></o:p></p>
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<p class=MsoNormal><b><font size=1 face=sans-serif><span style='font-size:
7.5pt;font-family:sans-serif;font-weight:bold'>"Pascoe,Tim [<st1:City
w:st="on"><st1:place w:st="on">Burlington</st1:place></st1:City>]"
<Tim.Pascoe@ec.gc.ca></span></font></b><font size=1 face=sans-serif><span
style='font-size:7.5pt;font-family:sans-serif'> </span></font><br>
<font size=1 face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif'>Sent
by: nsrca-discussion-bounces@lists.nsrca.org</span></font> <o:p></o:p></p>
<p><font size=1 face=sans-serif><span style='font-size:7.5pt;font-family:
sans-serif'>08/03/2006 09:01 AM</span></font> <o:p></o:p></p>
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<p class=MsoNormal align=center style='text-align:center'><font size=1
face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif'>Please
respond to<br>
NSRCA Mailing List <nsrca-discussion@lists.nsrca.org></span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=1 face=sans-serif><span style='font-size:
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<p class=MsoNormal><font size=1 face=sans-serif><span style='font-size:
7.5pt;font-family:sans-serif'>[NSRCA-discussion] Mintor 1.70 Question</span></font><o:p></o:p></p>
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<br>
</span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Hey List,</span></font> <o:p></o:p></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>
</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I’ve been setting up a Mintor 1.70
in a new plane, and am running into some minor difficulties. I first started
running the engine last fall, and has some mechanical trouble which lead to
some major needle twisting. After getting the mechanical trouble out of the
way, I’ve found myself trying to get the pump/needles back to where they should
be, with varying levels of success.</span></font> <o:p></o:p></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>
</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>The</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>original symptoms
seemed to indicate a lean mid-range on the engine; dying on throttle up after a
down line, the odd backfire when spooling up from idle in the flat. I’ve been
constantly richening the pump in an attempt to solve these issues, and it
seemed to work at first. Better mid-range, no dead sticks. However, I am still
getting the odd backfire, and I’m really afraid that I’m going to start busting
stuff.</span></font> <font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am now well in on the pump screw, much further than
another Mintor 1.70</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>flier</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>running the same
fuel, and a long way past flush with the screw housing. The mid-range needle is
also on the rich side of the setting.</span></font> <o:p></o:p></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>
</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Any suggestions would be
appreciated.</span></font> <font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The lines have all been checked, and they are fine (pretty
much new anyway). The tank clunk is free, and the vent line is clear. Is it
possible the backfire issue is in fact a too rich mixture, and I’m chasing the
problem the wrong way?</span></font> <o:p></o:p></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>
</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>It’s getting frustrating, as the
engine is great in</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>many</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>other ways</span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>– very
easy to start, phenomenal power, good</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>throttle response.</span></font> <font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I’m running
a 17x13 prop (soon to switch to the new 18.1x10) on an Aeroslave carbon pipe
set approx</span></font> <font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>¼</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>to</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>½ inch longer than
the Aeroslave recommended length,</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>with Cool Power 15% for fuel.</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Tim
Pascoe</span></font><tt><font size=2 face="Courier New"><span style='font-size:
10.0pt'>_______________________________________________</span></font></tt><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><br>
<tt><font face="Courier New">NSRCA-discussion mailing list</font></tt><br>
<tt><font face="Courier New">NSRCA-discussion@lists.nsrca.org</font></tt><br>
<tt><font face="Courier New">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</font></tt></span></font>
<o:p></o:p></p>
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