Lateral Balance - Phoenix Model Tiger Shark F20 Instruction Manual

Instruction Manual
BALANCING
1. It is critical that your airplane be balanced
correctly. Improper balance will cause your
plane to lose control and crash.
THE CENTER OF GRAVITY IS LOCATED
150mm BACK FROM THE LEADING EDGE
OF THE WING, AT THE FUSELAGE. This
location is recommended for initial test flying
and trimming. There is a 10mm margin forward
and aft. BALANCE A PLANE UPSIDE DOWN
WITH THE FUEL TANK EMPTY.
2. Mount the wing to the fuselage. Using a couple
of pieces of masking tape, place them on the
top side of the wing 150mm back from the
leading edge, at the fuselage sides.
3. Turn the airplane upside down. Place your fingers
on the masking tape and carefully lift the plane .
4. 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 under the horizontal
stabilizer. If the tail of the plane falls, the plane is
tail heavy. To correct this, move the battery and
receiver forward or if this is not possible, stick
weight into the firewall. When balanced correctly,
the airplane should sit level or slightly nose
down when you lift it up with your fingers.

LATERAL BALANCE

!
After you have balanced a plane on the C.G. You
should laterally balance it. Doing this will help the
airplane track straighter.
1. Turn the airplane upside down. Attach one loop of
heavy string to the engine crankshaft and one to
the tail wheel wire. With the wings level, carefully
lift the airplane by the string. This may require two
people to make it easier.
2. If one side of the wing fall, that side is heavier than
the opposite. Add small amounts of lead weight to
the bottom side of the lighter wing half's wing tip.
Follow this procedure until the wing stays level
when you lift the airplane.
CONTROL THROWS
1. We highly recommend setting up a plane using
the control throws listed.
2. The control throws should be measured at the
widest point of each control surface.
3. Check to be sure the control surfaces move in the
correct directions.
150mm
FLIGHT PREPARATION
PRE FLIGHT CHECK
1. Completely charge your transmitter and receiver
batteries before your first day of flying.
2. Check every bolt and every glue joint in your
plane to ensure that everything is tight and well
bonded.
3. Double check the balance of the airplane
4. Check the control surface
5. Check the receiver antenna . It should be fully
extended and not coiled up inside the fuselage.
6. Properly balance the propeller.
7. Use at least 5 rubber bands per side to hold the
wing onto the fuselage.
We wish you many enjoyable flights with
your plane and once again thank you for
your choosing a Phoenix Model's product.
13
Tiger Shark F20
Ailerons : 8mm up 8mm down
Elevator : 12mm up 12mm down
Rudder : 15mm right 15mm left
Aileron Control
Elevator Control
Rudder Control
8mm
8mm
12mm
12mm
15mm
15mm