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<div class=Section1>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The <st1:place w:st="on"><st1:PlaceName
w:st="on">Iron</st1:PlaceName> <st1:PlaceType w:st="on">Bay</st1:PlaceType></st1:place>
works perfectly for our applications. <span
style='mso-spacerun:yes'> </span>I know of several guys running them in
1.60 2 strokes. <span style='mso-spacerun:yes'> </span>It is a true on
demand regulator.<span style='mso-spacerun:yes'> </span>Tank is
pressurized to force fuel to the back of the diaphragm. <span
style='mso-spacerun:yes'> </span>Then the carb opens the valve as it needs
fuel. <span style='mso-spacerun:yes'> </span>It works very well, however I’m
not sure it will totally fix the issue of 2 strokes winding up and winding
down. <span style='mso-spacerun:yes'> </span>A think a lot of that would
have to do with friction and the number of moving parts. <span
style='mso-spacerun:yes'> </span><span
style='mso-spacerun:yes'> </span>I know a lot of guys, <span class=GramE>myself</span>
included have helped speed downlines with 2 strokes by going to 3 and 4 blade
props. <span style='mso-spacerun:yes'> </span>The IB regulator will work
though very well for our applications. <span
style='mso-spacerun:yes'> </span><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'>Arch <st1:place w:st="on">Stafford</st1:place><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'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<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>vicenterc@comcast.net<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, March 05, 2006 9:30
AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">NSRCA
Mailing List</st1:PersonName>; <st1:PersonName w:st="on">NSRCA Mailing List</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
Fuel Regulation in 2C Engines</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Good point. No, I never tried in 2 C. I used the Cline
regulator long time ago in a Saito engine with not good results (sport
plane). Base on feedback from others those two system do not work
properly in pattern applications. However, any new feedback is welcome.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Vicente<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<blockquote style='border:none;border-left:solid #1010FF 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>-------------- Original message -------------- <br>
From: "Ken Thompson" <mrandmrst@comcast.net> <o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Vicente,</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Have you thought about switching to a <st1:place w:st="on"><st1:PlaceName
w:st="on">Iron</st1:PlaceName> <st1:PlaceType w:st="on">Bay</st1:PlaceType></st1:place>
or Cline regulator? It's a thought, I believe these systems operate more
like a YS than a Perry does.</span></font><o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>----- Original Message ----- <o:p></o:p></span></font></p>
</div>
<div style='font-color:black'>
<p class=MsoNormal style='background:#E4E4E4'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>From:</span></font></b><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:vicenterc@comcast.net" title="vicenterc@comcast.net">vicenterc@comcast.net</a>
<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>To:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:nsrca-discussion@lists.nsrca.org"
title="nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Sent:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> Sunday, March 05,
2006 9:19 AM<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Subject:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> [NSRCA-discussion]
Fuel Regulation in 2C Engines<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Good morning all,<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I have been using the OS 160, OS 140 RX and Mintor 140 with good
results in the last 4-5 years. We have been comparing and discussing the
advantages of YS compared with 2C. One of the main advantages of YS
is that in transition when power down the engine goes instantly to 2000 RPM or
less. The 2C engines always takes too much time to get down to idle and I
believe that causes us (in pattern) some problems. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I have been thinking that the problem is that the carburetor and or
fuel system that can not regulate properly (pressure or flow). I think in
these engines, the pumps are set to deliver fuel at full flow (or
pressure) without any regulation system (like the YS). I had the
opportunity to discuss this issue with Perry Pump and they recommended to
install a by-pass line. The idea is to send the excess fuel (pressure)
back to the tank during transition. Perry Pump recommended to install the
T as close as possible to the carburetor needle valve. Also in their web
site they have an idea that he said is used for cars that is a by-pass line
that loop around the pump (<a href="http://www.perrypumps.com/instructions.htm"
target="_blank">http://www.perrypumps.com/instructions.htm</a>, Click on
Pump and By-Pass Systems). I think the ideas deserve some checking since
it is natural to have this type of regulation to maintain constant press! ! ure
in the line before needle valve. I tried the other day the by-pass
to the carburetor but I installed the T too far from the carburetor and forgot
to open the vent in the tank. Of course the results were bad
since I was developing vacuum in the tank. I will try these options of
by-pass lines as soon as get warmer. However, I think someone out there
already tried to do this and know results so I am looking for feed back.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Thanks in advance,<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Vicente Bortone<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
</div>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr</WMFILTERED> size=2 width="100%" align=center>
</span></font></div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>_______________________________________________<br>
NSRCA-discussion mailing list<br>
NSRCA-discussion@lists.nsrca.org<br>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<o:p></o:p></span></font></p>
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