DO NOT try to fly an out-of-balance model !
RUDDER
IMPORTANT: Flying your model at these throws will provide you with the greatest chance for successful first flights.
If,after you have become accustomed to the way the Spitfire flies, you would like to change the throws to suit your taste
that is fine. However, too much control throw could make the model difficult to control, so remember, “more is not always better”.
ELEVATOR
10mm
30mm
30mm
10mm
LATERAL BALANCE:
After you have balanced a plane on the CG, 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 wing level, carefully lift the airplane by the string. This may require two
people to make 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.
THE CENTER OF GRAVITY IS LOCATED 65 - 70mm BACK
FROM THE LEADING EDGE OF THE WING, AT THE
FUSELAGE.
BALANCE A PLANE
UPSIDE DOWN WITH THE
FUEL TANK EMPTY.
1- Mount the wing to the fuselage. Using a couple of pieces of
masking tape, place them
on the top side of the wing (65-70mm)
back from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and
carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the
battery pack further back in the fuselage.
If the tail of plane falls, the plane is tail heavy. To correct this, move the battery
forward or if this is not possible, stick weight onto the firewall.
When balanced correctly, the airplane should level or slightly nose down when you
lift it up with your fingers.
65-70mm
15mm take off
10mm
10mm
FLAP
AILERON
Position for
right diagram
25mm landing
DORNIER DO-27
14- Balance and control surface
