ail control setup

[twortkoetter]

Thanks Bob if I keep the linkage square to the servo and hinge line I am
at the tangent that Troy is talking about.  The second part of my
question is should the output shaft be closer to the L.E. or T.E. of the
wing(asked poorly in my first post)
 
Tim
 
-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of Bob Pastorello
Sent: Tuesday, February 08, 2005 6:19 PM
To: discussion at nsrca.org
Subject: Re: ail control setup
 
For fear of impinging on Troy's notes....in "laymen's terms" (that's ALL
of us, BTW, Tim)....as much as possible, in all cases, ALL the time,
have control systems "square, straight, perpendicular"....at neutral, a
line drawn across the servo from the clevis to the center of the shaft
should be parallel to the hinge line of the control surface.  A line
from the control surface takeoff point TO the servo arm/clevis should be
90* to the hinge line, and straight to the servo arm.  The attachment
points should always be "short on the servo end, longer on the control
side" to avoid flutter, and keep mechanical leverage on the side of the
servo.  And the last item...the "holes" for clevises should be set so
that you get recommended maximum throws with the tx set to 100% or more
travel, the servo takeoff point as close to the shaft as it can be, with
the control takeoff point as far OUT from the hinge line as IT can be.
 
It can be explained a LOT more complicated than this, and probably
easier.  This is just the way I think of it.

Bob Pastorello
NSRCA 199  AMA 46373
rcaerobob at cox.net
www.rcaerobats.net
 
 
----- Original Message ----- 
From: twortkoetter <mailto:twortkoetter at yahoo.com>  
To: discussion at nsrca.org 
Sent: Tuesday, February 08, 2005 5:56 PM
Subject: ail control setup
 
I just received my Jan K-factor yesterday, great timing since I am
re-doing
my ail control setup.  I was one of the ones that have my dual rates at
40%
low and 50% high so I certainly found Troy's article interesting.  This
will
be my second year flying intermediate and I sure have a lot to learn,
especially when it comes to airplane setup not to mention flying... but
that's all part of the fun.
 
Now to the question, which way should I mount the servos, should the
control
arm face the leading edge or the trailing edge?  I had it set up with
the
servos facing the trailing edge to make the linkage the shortest
possible
but I am going to go from 2-56 music wire to c.f. rods and don't know if
the
distance to small.  I could flip the servos and have more room but
should I
keep the linkages as short as possible or is it not as important due to
the
stiffness of the c.f.
 
I am also having a hard time picturing what Troy was saying about the
tangent line when it comes to attaching to the servo, could someone
explain
it in lay mans terms?
 
Thanks,
Tim Wortkoetter
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