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<DIV><FONT face=Arial size=2>Thanks George!</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=geobet@gis.net href="mailto:geobet@gis.net">george w. kennie</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> Wednesday, November 15, 2006 12:03
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] APC 18.1
x 10W props</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Welcome to the list Mike!!!!!</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=drmikedds@sbcglobal.net href="mailto:drmikedds@sbcglobal.net">Dr.
Mike Harrison</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> Wednesday, November 15, 2006 8:31
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] APC
18.1 x 10W props</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Peter,</FONT></DIV>
<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV><FONT face=Arial size=2>I am Mike Harrison, I worked with APC to
develop these props. Let me tell you the goal of the prop
design. It is to fly at a moderate to slow constant speed under the
noise limit but with good pulling performance. Therefore, regarding
the rpm, the 8000 is about ideal for that prop, turn it much more and you
will be above the noise limit. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I find it interesting that you determine
whether a prop is adequate by first tacking it. I would think you
would fly it first to see if it was adequate. I would encourage you to
do that first. The OS 140 turns it about the same and it flies very
well. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The whole purpose was to develop a prop that
would fly at a deliberate pace at about 150 meters to compete with the
electrics. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>There is also an 18.5x9.5 which I fly and it
turns about 7500 rpm. I like it better than the 18.1x10. I am
working on a 19x9 at the moment.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Good luck</FONT></DIV>
<DIV><FONT face=Arial size=2>Mike</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=pentagon.systems@bigpond.com
href="mailto:pentagon.systems@bigpond.com">Peter Pennisi</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> Tuesday, November 14, 2006 5:48
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] APC 18.1
x 10W props</DIV>
<DIV><FONT face=Arial size=2></FONT><BR></DIV>
<DIV class=Section1>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt">I recently purchased some 18.1 x 10W APC props for
my DZ160. Apparently there appears to be another version 18.1 x
10.1.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt">Could someone please tell me the difference
between both?<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt">I tried a quick ground run on this prop (stock)
this morning but could barely get 8000 RPM from the engine. I will take
advice from a member on this list and lop 1/4inch of each blade. What RPM
readings are people getting who are using either of these props on a YS
DZ160 engine?<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt">Regards,<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-AU
style="FONT-SIZE: 10pt">Peter <o:p></o:p></SPAN></FONT></P></DIV>
<P>
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