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<DIV><FONT face=Arial size=2>A top hinged aileron will actually present a
greater surface area to the airstream when deflected upward than downward
producing induced differential which CAN be beneficial, relative to design force
parameters.</FONT></DIV>
<DIV><FONT face=Arial size=2>G.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></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=ronlock@comcast.net
href="mailto:ronlock@comcast.net">ronlock@comcast.net</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> Thursday, March 06, 2008 8:20
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] YS
Questions+more - Rolls</DIV>
<DIV><BR></DIV>
<DIV>And while your at it, I'd appreciate some discussion of the impact of the
top hinge system as seen on Viavat, and Prestige birds
- (top hinged, with fairing that eliminates the gap at
deflection)</DIV>
<DIV> </DIV>
<DIV>Thanks, Ron Lockhart</DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: <A
href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</A> <BR>
<DIV>Nat,</DIV>
<DIV> </DIV>
<DIV>Could you explain why the differential should be different for
non-center hinged? I understand that the mechanical configuration of
non-center hinged requires differential to obtain same travel in both
directions. However, the travel up and down should be close to
equal. </DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV> </DIV>
<DIV class=signature id=signature>--<BR>Vicente "Vince" Bortone</DIV>
<DIV> </DIV>
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Original message -------------- <BR>From: "Nat Penton"
<natpenton@centurytel.net> <BR>
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<DIV><FONT face=Arial size=2>Tom</FONT></DIV>
<DIV><FONT face=Arial size=2>It's just something that is peculiar to the
Southern Hemisphere.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Changing wing incidence will not help. Unless
things are really screwed up <G>, at our roll rates, centrifugal
forces are too low to cause a problem. You want zero differential, aero
speaking ( same up/down if center hinged ).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I find the best check is the fast half-roll
in the vertical up.
Regards Nat</FONT></DIV>
<BLOCKQUOTE
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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=Tom.Koenig@actewagl.com.au
href="mailto:Tom.Koenig@actewagl.com.au">Koenig, Tom</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.f3a.us
href="mailto:nsrca-discussion@lists.f3a.us">NSRCA Mailing List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, March 05, 2008
7:24 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] YS
Questions+more</DIV>
<DIV><BR></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>Hi Troy!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>Thanks for the info. I thought you
would be toiling away on the next developmental stage of these
engines!!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>Hopefully soon, I can find the
time to get flying again. I am looking forward to running this little
beast. I am still a little concerned in keeping it quiet
though.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>Four blade props? I have some of the
18.1 x 12 two bladers but I just cant see how I'll shut the thing
up with these paint stirrers??</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>Also-one more question to any of you
out there in pattern land.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>I have struggled with aileron
differential for years. I am just not happy with the rolls. I have tried
various design fixes-but about the only one that seems to work is to get
the wing back to 0-0 ( which can be achieved by a few
ways, design, mix or thumbs) Differential itself does not seem to
work if the wing is POA ( well...it works for half the roll
!)</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>Another black magic fix appears
to be to run parallel ailerons-but this only 'sorta' seems to fix
it. I like the feel of equal% chord ailerons
however.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>I am frustrated with it-I like
my planes to roll as if they had a string up its ...........well
you know!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>OK-any 'secrets' I need to know???
Very good elevator work fixes it ( hence my 0-0
comment)</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=040220001-06032008><FONT
face="Comic Sans MS" color=#0000ff>Tom</FONT></SPAN></DIV>
<P>
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