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<DIV><FONT size=2>Troy, Yes, the production version is excellent.
See you next month!</FONT></DIV>
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<DIV><FONT face=Arial size=2><B>-----Original Message-----</B><BR><B>From:
</B>Troy Newman <<A
href="mailto:troy_newman@msn.com">troy_newman@msn.com</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>Thursday, May 15, 2003 12:48 AM<BR><B>Subject: </B>Re: 30 second setup for
the YS 140DZ<BR><BR></DIV></FONT>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2>Don,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Yes the "V" on the barrel is the production
version. There were only a few of the non-V barrels out there on the motors
that a few of us had before the actual release. The initial thing on the
original prototype is they were tough to lean out on the bottom end and get a
solid idle like previous motors...It would be a little rich and never die in
the air....but on the ground sometimes it would just load up a little after a
fairly long 90sec+ idle.....To my knowledge all of the production motors have
had this notch to lean the bottom end slightly....Another thing to my
knowledge there have not been the changes the in throttle barrels like on
previous versions of YS motors....I know many people felt it was the throttle
barrel of the day....as many were quite different. I have a new DZ from the
latest shipment and I have a production Carb on my original test motor (may of
2000)....This carb was changed out when the production motors were released.
That first run production barrel and the new latest run barrel are the
same...I have looked closely at the scroll and can't find any
difference.... </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My current setup is running about 1-3/8 to 1.25
open on the top end and just inside flush maybe about 3/4 turn to a
turn.....The idle is very good and the transition is great...If you get too
lean of idle what will happen is the motor will rev right off idle as you
throttle up then richen up and transition fine....I use this rev up as a key
its too lean and richen past this point slightly....</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keep up the practice! Its going to be a fun
event!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>When are you going down?....I'm going to be at my
wife's parents on about June 1-2 and they live about 90mins north of the
Woodruff contest site. My guess is we will go down and fly on Tuesday and then
do the airplane checkin on Weds morning.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Troy</FONT></DIV></FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=dszczur@maranatha.net href="mailto:dszczur@maranatha.net">don
szczur</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> Wednesday, May 14, 2003 9:16
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: 30 second setup for the YS
140DZ</DIV>
<DIV><BR></DIV>
<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>
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