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<DIV><SPAN class=000181223-15112006><FONT face=Arial color=#0000ff size=2>Don't
get your picture taken with Harrison--he makes everyone else look
fat. Hi Mike!</FONT></SPAN></DIV>
<DIV><SPAN class=000181223-15112006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=000181223-15112006><FONT face=Arial color=#0000ff
size=2>Richard</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>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>Dr. Mike
Harrison<BR><B>Sent:</B> Wednesday, November 15, 2006 4:26 PM<BR><B>To:</B>
NSRCA Mailing List<BR><B>Subject:</B> Re: [NSRCA-discussion] APC 18.1 x 10W
props<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Yeah, Yeah, Yeah.......</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV DEFANGED_STYLE="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=gfowler@raytheon.com href="mailto:gfowler@raytheon.com">Gray E
Fowler</A> </DIV>
<DIV DEFANGED_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 DEFANGED_STYLE="FONT: 10pt arial"><B>Sent:</B> Wednesday, November 15,
2006 2:49 PM</DIV>
<DIV DEFANGED_STYLE="FONT: 10pt arial"><B>Subject:</B> Re:
[NSRCA-discussion] APC 18.1 x 10W props</DIV>
<DIV><BR></DIV><BR><FONT face=sans-serif size=2>Good God almighty! Mike
Harrison on the list! Can Art Wagner be far behind?</FONT> <BR><FONT
face=sans-serif size=2><BR><BR><BR>Gray Fowler<BR>Senior Principal Chemical
Engineer<BR>Radome and Composites Engineering<BR>Raytheon</FONT>
<BR><BR><FONT size=2><TT><A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A>
wrote on 11/15/2006 02:41:42 PM:<BR><BR>> Thanks George!</TT></FONT>
<BR><FONT size=2><TT>> ----- Original Message ----- </TT></FONT><BR><FONT
size=2><TT>> From: george w. kennie </TT></FONT><BR><FONT size=2><TT>>
To: NSRCA Mailing List </TT></FONT><BR><FONT size=2><TT>> Sent:
Wednesday, November 15, 2006 12:03 PM</TT></FONT> <BR><FONT size=2><TT>>
Subject: Re: [NSRCA-discussion] APC 18.1 x 10W props</TT></FONT> <BR><FONT
size=2><TT>> <BR>> Welcome to the list Mike!!!!!</TT></FONT> <BR><FONT
size=2><TT>> ----- Original Message ----- </TT></FONT><BR><FONT
size=2><TT>> From: Dr. Mike Harrison </TT></FONT><BR><FONT
size=2><TT>> To: NSRCA Mailing List </TT></FONT><BR><FONT size=2><TT>>
Sent: Wednesday, November 15, 2006 8:31 AM</TT></FONT> <BR><FONT
size=2><TT>> Subject: Re: [NSRCA-discussion] APC 18.1 x 10W
props</TT></FONT> <BR><FONT size=2><TT>> <BR>> Peter,</TT></FONT>
<BR><FONT size=2><TT>> Hi,</TT></FONT> <BR><FONT size=2><TT>> I am
Mike Harrison, I worked with APC to develop these props. Let <BR>>
me tell you the goal of the prop design. It is to fly at a
moderate<BR>> to slow constant speed under the noise limit but with good
pulling <BR>> performance. Therefore, regarding the rpm, the 8000
is about ideal <BR>> for that prop, turn it much more and you will be
above the noise limit. </TT></FONT> <BR><FONT size=2><TT>>
</TT></FONT> <BR><FONT size=2><TT>> I find it interesting that you
determine whether a prop is adequate <BR>> by first tacking it. I
would think you would fly it first to see if<BR>> it was adequate.
I would encourage you to do that first. The OS <BR>> 140
turns it about the same and it flies very well. </TT></FONT><BR><FONT
size=2><TT>> </TT></FONT> <BR><FONT size=2><TT>> The whole
purpose was to develop a prop that would fly at a <BR>> deliberate pace
at about 150 meters to compete with the electrics. </TT></FONT>
<BR><FONT size=2><TT>> </TT></FONT> <BR><FONT size=2><TT>> There
is also an 18.5x9.5 which I fly and it turns about 7500 rpm. <BR>>
I like it better than the 18.1x10. I am working on a 19x9 at the
moment.</TT></FONT> <BR><FONT size=2><TT>> </TT></FONT> <BR><FONT
size=2><TT>> Good luck</TT></FONT> <BR><FONT size=2><TT>>
Mike</TT></FONT> <BR><FONT size=2><TT>> From: Peter Pennisi
</TT></FONT><BR><FONT size=2><TT>> To: 'NSRCA Mailing List'
</TT></FONT><BR><FONT size=2><TT>> Sent: Tuesday, November 14, 2006 5:48
PM</TT></FONT> <BR><FONT size=2><TT>> Subject: [NSRCA-discussion] APC
18.1 x 10W props</TT></FONT> <BR><FONT size=2><TT>> <BR>>
</TT></FONT> <BR><FONT size=2><TT>> I recently purchased some 18.1
x 10W APC props for my DZ160. <BR>> Apparently there appears to be
another version 18.1 x 10.1.</TT></FONT> <BR><FONT size=2><TT>>
</TT></FONT> <BR><FONT size=2><TT>> Could someone please tell me
the difference between both?</TT></FONT> <BR><FONT size=2><TT>>
</TT></FONT> <BR><FONT size=2><TT>> I tried a quick ground run on
this prop (stock) this morning but <BR>> could barely get 8000 RPM from
the engine. I will take advice from a<BR>> member on this list and lop
1/4inch of each blade. What RPM readings<BR>> are people getting who are
using either of these props on a YS DZ160 engine?</TT></FONT> <BR><FONT
size=2><TT>> </TT></FONT> <BR><FONT size=2><TT>>
</TT></FONT> <BR><FONT size=2><TT>> Regards,</TT></FONT> <BR><FONT
size=2><TT>> </TT></FONT> <BR><FONT size=2><TT>> Peter
</TT></FONT><BR><FONT size=2><TT>> <BR>>
_______________________________________________<BR>> NSRCA-discussion
mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</TT></FONT>
<BR><FONT size=2><TT>> <BR>>
_______________________________________________<BR>> NSRCA-discussion
mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</TT></FONT>
<BR><FONT size=2><TT>> <BR>>
_______________________________________________<BR>> NSRCA-discussion
mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>>
_______________________________________________<BR>> NSRCA-discussion
mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</TT></FONT>
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