Specifications

Page 39
AIRCRAFT SETUP INFORMATION
EXPONENTIAL
Exponential (Expo) softens the control feel around neutral. This is especially helpful when ying an aircraft that uses a lot of control
throw. Softening the neutral point makes the aircraft y more smoothly and makes it more likely that you won't over-control. Please
note that different brands of radio control systems may call for + or - Expo. Please refer to your radio control system's User's Guide for
more information.
Obviously, you may want to change the expo settings to suit your ying style, but here are our suggestions to start:
Ailerons ........
10%
 ........
10%
Rudder ..........
10%
TEST FLYING
Ailerons .........65%
 .........
65%
Rudder ...........
65%
3D FLYING
CONTROL SURFACE LINKAGES
If you don't maintain the proper mechanical advantage on the control surfaces, control surface utter may result, which can cause your
aircraft to lose control and crash. Mechanical advantage refers to the distance that the pushrod attachment points (pivot points) are
from the servos and the control surfaces.
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Keeping the pushrods as close to the centre of the servo arms as possible will increase the servo's resolution. What this means is
that when you move the control sticks on the transmitter, the servo arms will have to travel farther to achieve the desired amount of
control input. This makes the resolution higher, therefore causing the control surface deection to be more precise. We don't recommend
moving the pushrods any farther away from the center of the servo arms than absolutely necessary.
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Keeping the pushrods as far away as possible from the control surfaces is better than moving them closer. The mechanical advantage
is greatly reduced the closer the pushrods are moved toward the control surfaces. The closer the pushrod is attached to the control
surface, the more chance of inducing utter. We don't recommend moving the pushrods any closer to the control surfaces than
absolutely necessary.
THROTTLE MANAGEMENT
It is very important that you understand throttle management. Basically, this means no full throttle dives. Full throttle dives should be
avoided so as not to cause control surface utter and/or airframe failure. When the nose of the aircraft drops, decrease the throttle, just
as in full-scale aerobatics.
SEALING THE HINGE GAPS
Sealing the hinge gaps on both the ailerons and the elevator halves is important for a couple of reasons. First, sealing the hinge gaps
improves the responsiveness of the control surfaces. Second, and more importantly, sealing the hinge gaps smooths airow over the
hinge lines, helping to reduce the chance of control surface utter, which can result in loss of control and/or failure of the airframe.
You should ensure that you follow the steps in the control surface hinges sections to seal the hinge gaps on both the ailerons and the
elevator halves. Only the bottom of the hinge gaps need to be sealed and it's not necessary to seal the rudder hinge gap.
CONTROL LINKAGE CLEVISES
Steel clevises are used for durability, however, because metal clevises are threaded onto metal pushrods and couplers, it's important
than you rmly tighten the hex nuts (retaining nuts) to lock the couplers, pushrods, and clevises securely into place. If you don't, vibration
can cause the threads to wear and eventually fail, resulting in loss of control. It's important to periodically check the hex nuts to ensure
that they haven't loosened.
Heat-shrink tubing is provided to keep the clevises from accidentally opening up during ight. It's important the you install pieces. If you
don't, it's possible for a clevis to come apart, resulting in loss of control.
FLYING WIRES
Periodically check the ying wires to ensure that all of the ying wires are still tight. The ying wires help with structural stability of the
tail section, particularly during violent manuevres.