Balancing & Adjusting; Recommended Control Throws - GRAUPNER Alpina 5001 pro Bauanleitung

The model is now largely complete, but some very important work remains to be done while
still in the workshop.
Balancing & Adjusting.
The correct centre of gravity and longitudinal dihedral are first determined theoretically, and
then confirmed in practice by test flying the model.
A successful first test flight is invariably a matter of good preparation!
Centre of gravity and longitudinal dihedral.
Start with the centre of gravity between 85 and 93 mm behind the root wing leading edge –
this has been found to be ideal in test flights. 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 additional nose weight is required, use a
measured amount of Lead (Lead shot is the most convenient form) and fix it into the nose
with suitably thickened epoxy resin. (This ought only to be necessary in the case of the pure
glider)
The correct longitudinal dihedral (decelage) is about +2° . 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
Rudder
Elevator
Outer Ailerons
Inner Aileron
Flaps
The flaps may be set to move about half the travel of the ailerons for full control of the trailing
edge.
Thermal Flight
Outer Ailerons
Inner Aileron
Flap
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
Outer Aileron
Graupner GmbH & Co. KG, Henriettenstraße 94-96, 73230 Kirchheim
39
Up Down
10 11
10 5
20 10
4 7
Up Down
10 5
5 2
2
Up Down
10 5
www.graupner.de * www.tangent-modelltechnik.com
Left/Right
35
Remarks
Camber
Remarks