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<DIV><FONT face=Arial size=2>Matt,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>the 17-12W is way too much prop for a
140DZ</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Run the engine between 8200-8500 and you will get
the best performance from it. On the 140DZ's Insane power is 16-12. The 16.5-12W
is also good if you are getting a little too loud. The 17-10 standard might be
good, but a bit loud. I would look at the 16inch props. The 17-12's will
pull the RPMS down too low and below 8000rpm. this loads the engine too much its
designed to run at higher rpm over 8000...you want to be over 8200 for
sure.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I know guys run the bigger props and don't have
trouble but usually they complain it doesn't have the power they want. Then they
stick a good prop on it and it goes like stink. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Depending on the fuel you have chosen to run
the prop will vary. If you are running 30% Heli then you might get away
with a 17-12 regular. the 17-12W is a bit more load and I only have used this on
the 160dz. If you are trying to run some 20% nitro you need to really back off
on the prop. Follow the rule of RPM above and keep the engine happy in the
8200-8600 range and it will not only run better with more performance but it
will live longer too.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The 18-10s are the same way. These are a bit too
much load on the 140DZ to get the good power. The engine is setup to run at a
certain RPM. If you run it there it will be equal power to the 2 stroke 140's
and in most cases more. If you try to load it down to 7700 like guys do to the 2
strokes you will not keep up. As far as power pulling the model in the air the
DZ will have more if you run it at the right RPM. 4 stoke vs 2 stroke is a
different gear in the car. Run the engine at the right RPM and it will make more
than you need even for a heavier model.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>troy Newman</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=mjfrederick@cox.net href="mailto:mjfrederick@cox.net">Matthew
Frederick</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-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, March 12, 2007 7:49
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Prop for 1.40
DZ??</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I'm currently running a 17x12W on my 1.40DZ but
I'm not getting the vertical performance I would like. I was wondering what
prop size I should try? I've considered an 18x10. Any thoughts?</FONT></DIV>
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