Control Throws - Seagull Models Extra 300 Assembly Manual

Wing bolt.
BALANCING.
!1) It is critical that your airplane be bal-
anced correctly. Improper balance will cause
your plane to lose control and crash. The cen-
ter of gravity is locate
leading edge of the wing, measured at wing
tip.
!2) If the nose of the plane falls, the plane
is nose heavy. To correct this first move the
battery pack further back in the fuselage. If
this is not possible or does not correct it, stick
small amounts of lead weight on the fuselage
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Wing bolt.
7-8cm
back from the
sides under the horizontal stabilizer. If the tail
of the plane falls, the plane is tail heavy. To
correct this, move the battery and receiver for-
ward orif this is not possible, stick weight onto
the firewall or use a brass heavy hub spinner
hub, similar to those offered by Harry Higley.
When balanced correctly, the airplane should
sit level or slightly nose down when you lift it
up with your fingers.

CONTROL THROWS.

!1)
We highly recommend setting up the
EP EXTRA 300 using the control throws listed
at right. We have listed control throws for both
Low Rate (initial test flying/sport flying) and
High Rate (aerobatic flying).
!2)
Turn on the radio system, and with the
trim tabs on the transmitter in neutral, center
the control surfaces by making adjustments
to the clevises or adjustable servo connectors.
The servo arms should be centered also.
! 3) When the elevator, rudder and aileron
control surfaces are centered, use a ruler and
check the amount of the control throw in each
surface. The control throws should be
measured at the widest point of each sur-
face!
INITIAL FLYING/SPORT FLYING
Ailerons: 5/8" up
Elevator: 3/4" up
Rudder: 2 1/2" right and left
AEROBATIC FLYING
Ailerons: 1" up
Elevator: 1 1/4" up
Rudder: 3 1/2" right and left
Do not use the aerobatic settings for
initial test flying or sport flying.
! 4) By moving the position of the adjust-
able control horn out from the control surface,
you will decrease the amount of throw of that
control surface. Moving the adjustable con-
trol horn toward the control surface will in-
crease the amount of throw.
1/2" down
3/4" down
7/8" down
1 1/4"down
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