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<DIV><FONT size=2>Re O.S. 160FX issues</FONT>.</DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV>Engines with remote needle valves don't like to run with pumps or
regulators very well. I went through all of these setups and none were
satisfactory.</DIV>
<DIV>This is the least troublesome setup. No pump or regulator or check <FONT
size=2>valve.</FONT></DIV>
<DIV><FONT size=2>I have my two engines running and pulling better than a
DZ.</FONT></DIV>
<DIV><FONT size=2>The speed is actually too fast and I have to try to load them
up with more prop.</FONT></DIV>
<DIV><FONT size=2>At the moment I am using a 16.5 x 12 APC. A heavier prop
might change the </FONT></DIV>
<DIV><FONT size=2>pipe length </FONT><FONT size=2>a little. </FONT></DIV>
<DIV><FONT size=2>I'm using a 3" header extension between my header, which
meassures</FONT></DIV>
<DIV><FONT size=2>about 6" straight back from the glow plug, to a Mac's
15cc quiet pipe. </FONT></DIV>
<DIV><FONT size=2>I also did some mod's on the exhaust timing to allow for
running on the</FONT></DIV>
<DIV><FONT size=2>pipe. </FONT><FONT size=2>A 4oz </FONT><FONT size=2>header (or
hopper ) tank behind the firewall, which I use on all </FONT></DIV>
<DIV><FONT size=2>setups now, and the main </FONT><FONT size=2>tank </FONT><FONT
size=2>just in front of the wing tube. Had to move it down</FONT></DIV>
<DIV><FONT size=2>on the floor of the fuselage </FONT><FONT size=2>because of
siphoning. Pressure line from the high</FONT></DIV>
<DIV><FONT size=2>point of the pipe into the main </FONT><FONT size=2>tank. Good
idle and midrange as well as transition</FONT></DIV>
<DIV><FONT size=2>to high speed. Actually too much </FONT><FONT
size=2>power.</FONT></DIV>
<DIV><FONT size=2>But than again too much is just enough!!!</FONT></DIV>
<DIV> </DIV>
<DIV>Karl G. Mueller<BR><A
href="mailto:kgamueller@rogers.com">kgamueller@rogers.com</A><BR></DIV>
<DIV><FONT size=2></FONT> </DIV></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=JonLowe@aol.com href="mailto:JonLowe@aol.com">JonLowe@aol.com</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> Tuesday, June 01, 2004 8:09
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> OS 1.60 Issues</DIV>
<DIV><BR></DIV>
<DIV>I have a Titan, OS 1.60, Mueller header, Greve pipe, Ironbay regulator
before the needle valve, OS #8 plug, running a 17x13 with 15%.
Tank is monted over the CG. Hyde mount. As near as I can measure
around the header, I am at the length that Piedmont recommends for these pipes
on their site. Good power at full throttle, but midrange stinks, wanting
to load up at 3/4 throttle, and not transition to full throttle. Also,
the mixture changes in the air, upright to inverted, going rich
inverted. I have the regulator mounted horizontally about 1.5 inches
from the needle, do I need to mount it fore-aft like a Cline? Do you
think I need to extend the length of the pipe? Any carb adjustment
tricks? I'm new to pipes, so any info will help.</DIV>
<DIV> </DIV>
<DIV>BTW, the original pressure check valve went bad before I even got
to fly it. I got a check valve (Foremost) from my local hobby
shop that seems to work, developing pressure and holding it well.
Have others had problems with the Ironbay valves?</DIV>
<DIV> </DIV>
<DIV>Thanks.</DIV>
<DIV> </DIV>
<DIV><FONT size=2 PTSIZE="10">Jon
Lowe<BR></FONT></DIV></BLOCKQUOTE></BODY></HTML>