GRAUPNER GmbH & Co. KG * Henriettenstrasse 94-96 * 73230 Kirchheim/Teck
www.graupner.de
*
www.tangent-modelltechnik.com
15
Centre of gravity and longitudinal dihedral.
Start with the centre of gravity 110mm behind the root wing leading edge – this has been
found to be ideal in test flights. You ought to be able to achieve the required balance point by
careful location of the receiver/flight battery. Be sure all batteries are secure as any
movement whilst in flight will impact the correct centre of gravity and adversely affect the
proper flying characteristics of the model. If you do require additional nose weight, use a
measured amount of Lead (Lead shot is the most convenient form) and fix it into the nose
with suitably thickened epoxy resin.
The correct longitudinal dihedral (decelage)
is between +1-1,5°. This is the angle of the
elevator (at the neutral position) with respect to the wing and is best measured with the aid of
an incidence meter.
Recommended control throws.
The following recommended control throws have been determined following several test
flights, confirmed by several different model pilots. We strongly recommend that you begin
with the recommended throws and only change them with experience.
Normal Flight
Up
Down
Left/Right
Rudder
-
-
35/35
Elevator
15
15
-
Ailerons
25
10
10
Flaps
-
-
-
The flaps may be set to move about half the travel of the ailerons for full control of the trailing
edge.
Thermal Flight
Up
Down
Remarks
Ailerons
20
Aileron
1,5
Camber
Flap
2
Camber
The flaps should not be set to move with the ailerons, but some model pilots prefer to mix the
flaps with elevator (Snap-Flap) in this mode.
Speed Flight
Up
Down
Remarks
Aileron
15
15
Aileron (Reflex)
0,5
Reflex
Flap (Reflex)
1,5
Reflex
In this mode the flaps may be set to move both up and down, about half the travel of the
ailerons.
