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<DIV>
<DIV>I'm a newbie also and won't advise on what to do about trimming for this
problem. But my experience with trimming issues was fairly humbling.</DIV></DIV>
<DIV> </DIV>
<DIV>After struggling for many weeks with suggestions about trimming on my
plane, I did finally go to a contest and asked a seasoned pilot to check it out.
After putting it through a few masters maneuvers that looked impressive to me,
he landed and said it just needed a couple of clicks on the aileron.</DIV>
<DIV> </DIV>
<DIV>After a full season in Sportsman, I look back and reflected that most of
the problems were not trimming of the plane. I was coupling control inputs
every-time I moved a stick. Looked like I was having trimming problems, and it
was repeatable. I could actually screw it up the same way every time.</DIV>
<DIV> </DIV>
<DIV>I focused on stick movement at every contest and replaced the factory
springs with some stiffer springs from one of the Chicago folks, Bobby Satalino.
Jim Hubbard did the surgery replacing the springs after the contest and I have
been flying much better since.</DIV>
<DIV> </DIV>
<DIV>Every contest I went to had great folks very willing to help out. Allot of
advise on flying maneuvers that allowed me to see improvements at each contest I
entered.</DIV>
<DIV> </DIV>
<DIV>My only recommendation is to follow the advise of others in this
thread and get a seasoned pilot to help out.</DIV>
<DIV> </DIV>
<DIV>Good Luck...</DIV>
<DIV> </DIV>
<DIV>Larry Diamond</DIV>
<DIV>NSRCA 3083</DIV>
<DIV>AMA 5024</DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=ltr
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="FONT: 10pt arial"><B>From:</B> <A
href="mailto:rcaerobob@cox.net">Bob Pastorello</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, March 30, 2004 7:57
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Trimming Help</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Courtesy of Buddy, I've placed (with his
permission) his summary of the "trimming" issues. Probably many of you
share my view that his summary was one of the most on-target, concise
statements I've read about trimming in a VERY long time, if ever!!!
Posted here for your reference:</FONT></DIV>
<DIV><FONT face=Arial size=2><A
href="http://www.rcaerobats.net/trim_chart.htm">http://www.rcaerobats.net/trim_chart.htm</A></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks, Buddy!</FONT></DIV>
<DIV><BR>Bob Pastorello, Oklahoma<BR>NSRCA 199, AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </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 href="mailto:BUDDYonRC@aol.com">BUDDYonRC@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, March 30, 2004 1:08
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Trimming Help</DIV>
<DIV><BR></DIV><FONT face=arial,helvetica><FONT lang=0 face=Arial
color=#8000ff size=2 FAMILY="SANSSERIF" PTSIZE="9">Paul<BR>I am no
aerodynamics expert, but I have learned some basic's over the years that
work for me.<BR>1. The wing must have a positive angle of attack to create
lift.<BR>2. the stabilizer and elevators steer the pitch attitude of the
airplane resulting in more or less lift.<BR>3. Balance can change the angle
of attack which will change the pitch attitude.<BR>4. Aileron's up or down
will change the pitch attitude .<BR>5. Up or down thrust will change the
pitch attitude.<BR>Therefore:<BR>A. Increasing the positive wing incidence
will cause the airplane to climb, which will require down trim to achieve
level flight.<BR>B. Likewise adding tail weight will cause the airplane to
climb and require down trim to achieve level flight.<BR>C. Added weight does
not alter the vertical down line BUT elevator trim added to maintain level
flight because of the added weight will effect the down line. Tail weight
will require down trim which will steer the airplane more to the belly in a
down line, and added nose weight will require up trim which will steer the
airplane to the canopy.<BR>D. In the vertical up line elevator trim and the
engine thrust line will effect the vertical and/or yaw direction
<BR>All of the above will effect the knife edge flight of the
model.<BR>Combinations of adjustments to any or all of the above trim items
done at the same time will leave you confused and frustrated.<BR>Most models
will require some mixing to achieve near perfect lines in all flight
attitudes in order to minimize / eliminate control inputs by the pilot to
maintain a perfect course.<BR>I have yet to see the perfect airplane should
such an animal exist, but I keep looking and building since I truly believe
that nothing is impossible.<BR>When trimming an airplane make a written log
of every change no matter how small so you don't have to start over when
changes are not correct.<BR>Buddy</FONT>
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