MDM-1FOX Item code: BH152
.
Instruction Manual
13
1)
It is critical that your airplane be balanced cor-
rectly. Improper balance will cause your plane to lose
control and crash.
THE CENTER OF GRAVITY IS LOCATED
115MM
BACK FROM THE LEADING EDGE OF THE
WING.
2)
Mount the wing to the fuselage. Using a couple
of pieces of masking tape, place them on the top side
of the wing
115mm
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.
Accurately mark the balance point on the top
of the wing on both sides of the fuselage. The
balance point is located
115mm
back from the leading
edge. This is the balance point at which your model should
balance for your first flights. Later, you may wish to experi
-
ment by shifting the balance up to 10mm forward or back
to change the flying characteristics. Moving the balance
forward may improve the smoothness and
arrow- like tracking, but it may then require more speed
for take off and make it more difficult to slow down for
landing. Moving the balance aft makes the model more
agile with a lighter and snappier ”feel”. In any case,
please start at the location we recommend.
With the wing attached to the fuselage, all parts of the
model installed ( ready to fly), and empty fuel tanks,
hold the model at the marked balance point with the
stabilizer level.
Lift the model. If the tail drops when you lift, the model
is “tail heavy” and you must add weigh* to the nose. If
the nose drops, it is “nose heavy” and you must add
weight* to the tail to balance.
*If possible, first attempt to balance the model by
changing the position of the receiver battery and
receiver. If you are unable to obtain good balance by
doing so, then it will be necessary to add weight to
the nose or tail to achieve the proper balance point.
BALANCING
CG
115mm
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.
CONTROL THROWS
Control throw Ailerons:
Low: ....... mm up / down, .......% expo.
High: ....... mm up / down, .......% expo.
Control throw Flaps:
Mid: ....... mm down, .......% expo.
Control throw Elevators:
Low: ....... mm up / down, .......% expo.
High: ....... mm up / down, ......% expo.
Control throw Rudder:
Low: ...... mm left / right, .......% expo.
High: ...... mm left / right, .......% expo.
......mm
......mm
......mm
......mm
......mm
......mm
......mm
Flap control
Aileron control
Elevator control
Rudder control
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.
We wish you many safe and enjoyable flights with
your MDM-1FOX.
PRE-FLIGHT CHECK
