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<DIV><FONT face=Arial size=2>Way to go Anthony, let me know how it
flies.</FONT></DIV>
<DIV><FONT face=Arial size=2>Mike</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=aabdu@sbcglobal.net href="mailto:aabdu@sbcglobal.net">Anthony
Abdullah</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, May 02, 2007 10:16
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Odyssey
CG</DIV>
<DIV><BR></DIV>
<DIV>I had a chance to run the numbers and set the CG tonight. I used both the
calculator and the formula and the results were within a fraction of an inch
of each other. At 25% my CG is about 7.54 inches from the leading edge at the
root.</DIV>
<DIV>Root Chord= 18</DIV>
<DIV>Tip Chord= 9.25<BR>Half span= 36</DIV>
<DIV>Mac= 14.09 and that occurs 16.07 inches from the root rib</DIV>
<DIV> </DIV>
<DIV>I plan on doing the maiden at 30%. At that point I do not have to add a
single ounce to the airframe.</DIV>
<DIV> </DIV>
<DIV>Thanks again, pattern people are the BEST!!!</DIV>
<DIV>Anthony<BR><B><I>"R. LIPRIE" <RLIPRIE@centurytel.net></I></B>
wrote:</DIV>
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<DIV><FONT face=Arial size=2>You could put it for 35% or 36% that would be
about the best. You won't even have to check it.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Matt L</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=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, May 02, 2007 12:56
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Odyssey CG</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Anthony,</FONT></DIV>
<DIV><FONT face=Arial size=2>I think you will find 25% to be very nose
heavy, I would opt more for 30%. This has been a great discussion
regarding CG. It is important that the pilot learn early the
way to find CG and then adjust to his personal likes.</FONT></DIV>
<DIV><FONT face=Arial size=2> Good Luck</FONT></DIV>
<DIV><FONT face=Arial size=2>Mike</FONT></DIV>
<DIV><FONT face=Arial size=2></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=aabdu@sbcglobal.net href="mailto:aabdu@sbcglobal.net">Anthony
Abdullah</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, May 02, 2007 10:50
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Odyssey CG</DIV>
<DIV><BR></DIV>
<DIV>George,</DIV>
<DIV>That clears up everything! I guess that is why they call it mean
aerodynamic CHORD. When I go home tonight I will use both the mathematic
method and plug numbers into the calculator. I am fairly confident that
they will be very close to each other. First test flight will be this
weekend with the CG set at 25% MAC.</DIV>
<DIV> </DIV>
<DIV>Once again, thank you to everyone, you guys are awesome!</DIV>
<DIV>Anthony<BR><BR><B><I>"george w. kennie"
<geobet@gis.net></I></B> wrote:</DIV>
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<DIV><FONT face=Arial size=2>Anthony,</FONT></DIV>
<DIV><FONT face=Arial size=2>He doesn't want you to go out 13.5 inches
from the root section of the wing. He wants you to move out on
the panel to a point where the wing measures 13.5 inches from the
leading edge to the trailing edge, in other words, the point where the
CHORD of the wing is equal to 13.5 inches wide, and that's probably
going to happen around 17 or 18 inches out. On top of that, you're
going to have to use the actual numbers ( chord/tip) from YOUR
wing.</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>
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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=aabdu@sbcglobal.net
href="mailto:aabdu@sbcglobal.net">Anthony Abdullah</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, May 02, 2007
9:21 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Odyssey CG</DIV>
<DIV><BR></DIV>
<DIV>A huge thank you to all that have provided information. I
apologize for my ignorance, I am one of those people that tends to
follow the plans as a starting point and fine tune from there. As
such I do not have a firm grasp of the concept yet but love learning
about it.</DIV>
<DIV> </DIV>
<DIV>Simple question:</DIV>
<DIV>Does the 13.5 in the below example refer to the distance out
from the center of the fueslage or from the root rib? As I
understand it, if I go out 13.5 from that point (fuse center I
believe) and draw a perpendicular line that will be my MAC. Setting
the CG from there is just a matter of taking 25% to 30% of the MAC
distance out (13.5 for example) and marking that on the fuse at
the root rib?<BR></DIV>
<DIV> </DIV>
<DIV>Thanks again for all of your help!!</DIV>
<DIV>With any luck the next thing you hear from me will be a
successful maiden flight report.</DIV>
<DIV>Anthony</DIV>
<DIV><BR><B><I>"Dr. Mike Harrison"
<drmikedds@sbcglobal.net></I></B> wrote:</DIV>
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<DIV><FONT face=Arial size=2>Anthony,</FONT></DIV>
<DIV><FONT face=Arial size=2>They are all correct. That is
30% of MAC or mean aerodynamic chord. A reasonable estimate
with double taper wing is to add root chord plus tip chord divide
by 2 and take 30% of that. For example if the root is
18 inches and tip is 9 inches that adds to 27/2 equals 13.5 as
your MAC. Go to your wing and locate it. It is about
halfway out. Take .30 equals 4.05 inches, mark it and go
perpendicular to the root rib and mark on the root rib.
There is a very specific formula for this in Ron Van Putte's old
articles, but this is quick and dirty and will get you there in
the shop or at the field.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Mike</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=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> Tuesday, May 01, 2007
1:27 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re:
[NSRCA-discussion] Odyssey CG</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Anthony,</FONT></DIV>
<DIV><FONT face=Arial size=2>Not trying to start a war here, but
if that thing has a tapered leading edge, I think you might want
to move out almost half way on the panel and then go for your
30%. If you start at the root, you may find yourself flying a
brick. Trimming on KE on a 45 degree upline might also be a
worthwhile addition to your trimming regime.</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>
<DIV><FONT face=Arial size=2></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=aabdu@sbcglobal.net
href="mailto:aabdu@sbcglobal.net">Anthony Abdullah</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, May 01,
2007 1:46 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re:
[NSRCA-discussion] Odyssey CG</DIV>
<DIV><BR></DIV>
<DIV>Dr. Harrison,</DIV>
<DIV>Thank you very much for the information! I agree
with you completely that the CG is pilot specific. I tend to
like my planes just a hair tail heavy compared to others. What
I was afraid of was having the CG so out of whack that the
plane would not survive its maiden flight.</DIV>
<DIV> </DIV>
<DIV>I know that 30% is the rule of thumb and I wanted to make
sure that applies to the Odyssey. Just to summarize and for
example, If I am looking at the wing root of one panel and the
chord is 10 inches, I wand to start with the CG roughly three
inches from the leading edge at the root (fuselage)?</DIV>
<DIV> </DIV>
<DIV>I will follow that and let you know how it turns
out.</DIV>
<DIV> </DIV>
<DIV>Is there anything else I should know about the
Odyssey?</DIV>
<DIV> </DIV>
<DIV>Thanks again</DIV>
<DIV>Anthony<BR><BR><B><I>"Dr. Mike Harrison"
<drmikedds@sbcglobal.net></I></B> wrote:</DIV>
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<DIV><FONT face=Arial size=2>Anthony,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I designed the Odyssey and I
can't tell you where it is, but I can recommend some
guidelines. First, however let me give some opinion as
to the value of cg location. I believe the optimum cg
location is pilot sensitive, that is to say different flyers
prefer different cg's based on how the plane is set
up. For that reason I recommend a range that is easy
to find then fly the airplane and change the cg until you
like the way it flies. Some points to remember are to
fly full speed then cut the throttle, the plane should
descend very slowly. If it descends rapidly, then it
is nose heavy. If it climbs, it is tail heavy.
That will get you close. After that make very small
changes to suit your style. On your root rib mark from
28 to 32 percent of the rib. That would be a
recommended range. You might start at 30% and work
from there. The stab is powerful on the Odyssey and
requires expo for best results so don't confuse a powerful
elevator as tail heavy. </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>
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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=aabdu@sbcglobal.net
href="mailto:aabdu@sbcglobal.net">Anthony Abdullah</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> Monday, April
30, 2007 12:38 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B>
[NSRCA-discussion] Odyssey CG</DIV>
<DIV><BR></DIV>
<DIV>Does anyone know where the CG should be on the
Odyssey?<BR><BR>TIA</DIV>
<DIV>Anthony</DIV>
<DIV>
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