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<DIV><FONT face=Arial size=2>You can use <A
href="mailto:growpattern@comcast.net">growpattern@comcast.net</A> for this
e-mail account or <A
href="mailto:Eric.henderson@comcast.net">Eric.henderson@comcast.net</A> for my
main e-mail account.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV><FONT face=Arial size=2>
<DIV><BR>Eric.</DIV>
<DIV> </DIV>
<DIV>FYI - To reply directly to a list member you can right click on the e-mal
name of the sender. </DIV>
<DIV> </DIV>
<DIV>Select<STRONG> Properties</STRONG> and copy/paste the actual e-mal address
into an e-mail or your contacts list.</DIV>
<DIV> </DIV>
<DIV>Eric,</FONT></DIV>
<BLOCKQUOTE
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=precisionaero@comcast.net
href="mailto:precisionaero@comcast.net">Michael Cohen</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, July 31, 2006 8:32 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] YS140DZ
idle question-answer</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Thanks Eric, will do. By the way, what is
your direct e-mail address? For some reason, this e-mail will not let me
reply directly back to you....</FONT></DIV>
<BLOCKQUOTE
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=pattern4u@comcast.net href="mailto:pattern4u@comcast.net">Grow
Pattern</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, July 31, 2006 6:10
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] YS140DZ
idle question-answer</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Michael,</FONT></DIV>
<DIV><FONT face=Arial
size=2>
The big and first thing to remember is that the DZ uses a pump. If you keep
thinking about the pump as a regulator it may not help you set your
engine. Unfortunately the instructions call it a regulator. The fuel is
metered out to the carb by the pushrod action and the "pulsating" crankcase
pressure operates the pump side.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The next thing is that the carb does two
things. It controls the air flow to the inlet valve and the fuel supply
to the injector. Even though the needle effects all of the fuel flow it
is not the right thing to use to get a good idle. Many people
accidentally/unintentionally override the pump settings with the main needle
to get a good low-end rpm.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The "regulator" screw restricts the primary
fuel flow and is the one that you must use to set an idle and transition. If
you get the big brass screw set a bit too rich it will keep
dousing the plug, especially at low rpm.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The trick to a good setting is to keep closing
the pumped fuel supply until the engine will not run any more.
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>You do this by turning the big brass
screw clockwise about 1/8 of a turn and then start and warm
up the engine. Keep the main needle at about 1.5 turns or
more and don't worry if it runs a bit rich as you open the
throttle about half way, in short bursts. Do this again and again
until the engine will not start or keep running at idle or open
up.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>You are now very close. Turn the brass screw
back anti-clockwise about 1/8 of turn. and see if the engine will
start and idle. It should be able to go as low as, and hold about,
1.500 rpm.for about a minute. If the throttle smoothly increases the
rpm you have a good low-end setting. (Go more "open" on the brass
screw if it is needed to keep it running).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Now is the time set your top-end needle. It may
need more or less fuel so please open up carefully and listen for the
warning "bark". Richen the main needle if it barks. If all goes
well, set the high-end needle for max rpm and then richen it back about
500 rpm.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>After that it should run like a
Swiss-watch, start better, and last a good while. It should not quit in the
air or on the ground.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Please let me know if this worked for
you.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Eric.</FONT> </DIV>
<BLOCKQUOTE
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=precisionaero@comcast.net
href="mailto:precisionaero@comcast.net">Michael Cohen</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, July 30, 2006 2:31
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] YS140DZ
idle question</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=3>OK list, I have a question for you. I
have a 140DZ that will not idle below 2300ish RPM. Richard Lindberg
and I have adjusted the regulator, but it appears to have little or no
effect. I might be able to get one flight in, but eventually, on a
down line, it will die and 7 dead sticks are not that fun to
try. Full power seems to hold just fine. We figured
there might be an air leak, and that is why it seemed to idle worse after
a warm up flight, so I replaced the valve cover gasket and the other
gaskets at the backplate, but that did not seam to make a
difference. Anybody got any ideas besides the usual
OS/Webra/Mintor/E-power/power slope soaring comments?</FONT></DIV>
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