28
o
4) By moving the position of the clevis at the
control horn toward the outermost hole, you will
decrease the amount of throw of that control sur-
face. Moving the clevis toward the control surface
will increase the amount of throw.
FLIGHT PREPARATION
o
1) Check the operation and direction of the
elevator, rudder, ailerons and throttle.
o
A) Plug in your radio system per the
manufacturer's instructions and turn everything on.
o
B) Check the elevator first. Pull back
on the elevator stick. The elevator should go up.
If it does not, flip the servo reversing switch on
your transmitter to change the direction.
o
C) Check the rudder. Looking from be-
hind the airplane, move the rudder stick to the right.
The rudder should move to the right. The tail wheel
should move to the right as well. If it does not, flip
the servo reversing switch on your transmitter to
change the direction.
o
D) Check the throttle. Moving the
throttle stick forward should open the carbure-
tor barrel. If it does not, flip the servo reversing
switch on your transmitter to change the direc-
tion.
o
E) From behind the airplane, look at the
aileron on the right wing. Move the aileron stick
to the right. The aileron should move up and the
other aileron should move down. If it does not,
flip the servo reversing switch on your transmit-
ter to change the direction.
o
2) Check Control Surface Throw.
o
A) The Rudder should move 3/4” left
and 3/4” right from center. If it moves too far,
move the pushrod clevis to a hole in the rudder
horn away from the rudder. Do the opposite if
there is not enough throw.
o
B) The elevator should move 5/16” up
and 5/16” down from center. If it moves too
far, move the pushrod clevis to a hole in the el-
evator horn away from the elevator. Do the op-
posite if there is not enough throw.
o
C) The ailerons should move 1/4” up
and 1/4” down from center. To adjust the amount
of aileron throw, first move the pushrods on the
servo arm. Move the pushrods toward the cen-
ter of the servo for less movement. Move the
pushrods farther away from the center of the
servo for more movement. If enough movement
cannot be achieved in this manner, thread the
adjustable torque rod horns farther down the
torque rods, toward the wing. It is important
that both ailerons move the same amount, both
up and down.
o
D) Once the control throws and move-
ments are set, tubing must be added to the clev-
ises to ensure they do not release in the air. A
length of clear tubing was provided in the kit for
this. Cut it into the 1/4” pieces and slip one piece
over each clevis.
o
1) Completely charge your transmitter and re-
ceiver batteries before your first day of flying.
o
2) Check every bolt and every glue joint in
the Sukhoi to ensure everything is tight and well
bonded. This should include all of the control
surface hinges as well.
o
3) Double check the balance of the airplane.
Do this with the fuel tank empty.
o
4) Check the control surfaces. All should
move in the correct direction and not bind.
o
5) If your radio transmitter is equipped with
dual rate switches double check that they are on
the low rate setting for your first few flights.
o
6) Check to ensure the control surfaces are
moving the proper amount for both low and high
rate settings.
o
7) Check the receiver antenna. It should be
fully extended and not coiled up inside the fuselage.
o
8) Properly balance the propeller. An out
of balance propeller will cause excessive vibra-
tion which could lead to engine and/or airframe
failure.
PREFLIGHT CHECK
