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<DIV><FONT face=Arial size=2>IMO center hinged or top hinged is OK. With top
hinge, to achieve equal vertical travel of the trailing edge requires different
angular travel, up vs down. The objective is zero aerodynamic
differential.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ron I don't think a fairing would prevent
separation but, how are you able to fair the gap using the top hinge
?
Nat</FONT></DIV>
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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.f3a.us
href="mailto:nsrca-discussion@lists.f3a.us">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, March 06, 2008 7:20
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>
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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>
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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>
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