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<DIV><FONT size=2>Actually, like most things, they develop and refine over
time. I noticed when I changed my YS out (it ran great but after about 24
gallons, its way past when it should normally be serviced) with my backup DZ, I
noticed that the backup had a throttle barrell with a small notch, or "v"
cut in the front edge of the butterfly. It acts like an air bleed
when the throttle is shut. Any case, this version of the (carb) runs
significantly leaner on the low end. A characteristic of lean low end is a
hesitation when advancing the throttle from idle to full. I screwed the
pump in about a half turn IN past flush, from the housing point to bump up the
pressure and thus richen the idle so it does not hesitate much. No
difference in the air from the other DZ. So, the type of carb design may
impact the pump position. The same process used below to adjust
though.</FONT></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid">
<DIV><FONT face=Arial size=2><B>-----Original Message-----</B><BR><B>From:
</B>PENNISI Peter <<A
href="mailto:Peter.Pennisi@publicworks.qld.gov.au">Peter.Pennisi@publicworks.qld.gov.au</A>><BR><B>To:
</B><A href="mailto:'discussion@nsrca.org'">'discussion@nsrca.org'</A> <<A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A>><BR><B>Date:
</B>Tuesday, May 13, 2003 9:42 PM<BR><B>Subject: </B>RE: 30 second setup for
the YS 140DZ<BR><BR></DIV></FONT>
<DIV><SPAN class=533093901-14052003><FONT face=Arial color=#0000ff
size=2>Don,</FONT></SPAN></DIV>
<DIV><SPAN class=533093901-14052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=533093901-14052003><FONT face=Arial color=#0000ff
size=2>Apologies, I should have read your article more closely, the answer to
my question was always there.</FONT></SPAN></DIV>
<DIV><SPAN class=533093901-14052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=533093901-14052003><FONT face=Arial color=#0000ff
size=2>Regards,</FONT></SPAN></DIV>
<DIV><SPAN class=533093901-14052003></SPAN> </DIV>
<DIV><SPAN class=533093901-14052003><FONT face=Arial color=#0000ff
size=2>Peter</FONT> </SPAN></DIV>
<BLOCKQUOTE>
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> PENNISI Peter
[mailto:Peter.Pennisi@publicworks.qld.gov.au]<BR><B>Sent:</B> Wednesday, 14
May 2003 11:46 AM<BR><B>To:</B> 'discussion@nsrca.org'<BR><B>Subject:</B>
RE: 30 second setup for the YS 140DZ<BR><BR></FONT></DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2>Don,</FONT></SPAN></DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2>Quick question about your pump position. You said 3/4 turn past
flush. Is that "IN" past flush or "OUT" past flush.</FONT></SPAN></DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2>Good article</FONT></SPAN></DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2>Regards,</FONT></SPAN></DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=717203401-14052003><FONT face=Arial color=#0000ff
size=2>Peter</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> don szczur
[mailto:dszczur@maranatha.net]<BR><B>Sent:</B> Saturday, 5 April 2003 1:48
PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> 30 second setup
for the YS 140DZ<BR><BR></FONT></DIV>
<DIV><FONT size=2>Thought I'd offer some quick set-up tips for anyone
interested. If you have an excellent system that works for you, no
need to read on. For those remaining:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>1. Use a good hot glow igniter. The fuel
injection cools the plug more than conventional induction engines.
You'll know if you hear the engine pop, then no fire at all while spinning
the prop and running the starter battery (as the engine
floods).</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>2. Set up fuel line/filter so its external about 2
inches (the holder can reach over and pinch line if
engine gets flooded while starting) Also the filter external is
easy for maintenance and diagnostics (those tiny bubbes from a faulty fuel
line).</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>3. Start engine. Should start easily with a
high torque starter. Start with needle out quite a bit, pump setting
varies. (I have heard the recommendation of just a little
recessed; almost flush with screw housings, or, start with factory
setting).</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>4. If engine does not idle (loads up an quits
after 10 seconds) screw the pump out. Mine took quite a bit out-
about 3/4 turn out from being flush with pump screw housing.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>5. With needle rich (I put mine out 2 1/2 turns)
run full throttle, then reduce back to idle, screw in a quarter turn, run
full throttle (you should hear an rpm increase). Keep doing this
process til you year that increase, go another 1/4 turn until it does
not increase or starts to knock. Then back off an eight to
quarter turn. Note- during each run-up, I'm not running at full
throttle for more than about 3 seconds. Why? So the engine
does not over-heat if going in too far.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>6 Fly. Great idle on the ground and excellent
runs.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>For reference, here are my settings. Fly JR,
Don</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Engine: YS 140DZ</FONT></DIV>
<DIV><FONT size=2>Prop: APC 16x12 (keeps prop noise down)</FONT></DIV>
<DIV><FONT size=2>Pipe; ES- XL (2C pipe) Less expensive and
quiet</FONT></DIV>
<DIV><FONT size=2>Fuel: Magnum Heli Pro</FONT></DIV>
<DIV><FONT size=2>Glow Plug: OS F</FONT></DIV>
<DIV><FONT size=2>Filter: YS </FONT></DIV>
<DIV><FONT size=2>Tank: Tetra 18 oz w/bladder</FONT></DIV>
<DIV><FONT size=2>Needle- about 1 5/8 out.</FONT></DIV>
<DIV><FONT size=2>Pump- about 3/4 turn past flush.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Discussion: The pump (turning it out) makes it
pump with less pressure, thus the need to screw out the needle. The
less pressure also results in leaner idle. Likewise, turning the
pump screw in makes the pump (pump more). Turn it in too much and
the fuel line pops off at the injector! No need for this much
pressure. </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Note on bladder- first one broke after 10
gallons. Second one is still going. I now fill tank as normal, but
as its getting to the top, pump very slowly so the (balloon) is not too
stessed. Fuel should dribble out, interspersed with
bubbles.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Good flying, Don</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT
size=2></FONT> </DIV></BLOCKQUOTE>*****************************
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