GRAUPNER/SJ GmbH D-73230 KIRCHHEIM/TECK GERMANY
Modifications reserved. No liability for printing errors.
3/2013
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10
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Balancing
Assemble the model completely for balancing, i.e. with the whole RC system fitted.
The correct Centre of Gravity is at a point 115 mm from the wing leading edge,
measured at the root.
Check the C.G. by supporting the model under the wing on two fingertips at the point
indicated: the model should now balance level. Add lead ballast to the extreme nose
until the model remains horizontal. Note: the C.G. of the AMIGO IV is further aft than
normal due to the lifting airfoil of the tailplane.
Longitudinal dihedral
The longitudinal dihedral, i.e. the difference in incidence between the wing datum and
the tailplane datum, should be 1.5° to 2°. If you h ave built the model accurately and
in accordance with the plan, this will automatically be correct. If you are not sure of
this, or if the model needs to be checked after a repair, simply refer to the sketch
below.
Flying
Assemble the model completely, charge all the batteries, and check that the control
surfaces are properly centred before undertaking the first flight. Wait for a day with
little or no breeze. A good flying site is a flat grassy field, ideally with a gentle slope
facing into wind.
Note: for the initial test-glide push the model forward directly into any wind; the
fuselage nose should be angled down slightly (by about 10°). If necessary apply
very slight rudder and elevator commands to keep the model gliding straight and flat.
Fine-tuning is carried out using the trim sliders below and adjacent to the transmitter
sticks. Always land the model directly into wind.
All of us at Graupner/SJ Modellbau hope you enjoy many fine flights with your new
AMIGO IV
