GRAUPNER/SJ GmbH D-73230 KIRCHHEIM/TECK GERMANY
Modifications reserved. No liability for printing errors.
11/2013
6
Control surface travels
The control surface travels are set up correctly at the factory for around 100% servo
travel. The deflections are as follows, measured in each case at the inboard trailing
edge of the control surface: elevator approx. 12.5 mm up and down, ailerons approx.
15 mm up and 10 mm down.
The photo shows the model with the retractable power unit extended, but not
switched on. The aeroplane’s glide angle is steeper in this state, and this makes
accurate spot-landings easier. It is best to set up a two-position switch on the
transmitter to operate the fan unit extend / retract function.
Caution: it is very
important that the servo which operates the retractable power unit should not
be stalled at either end-point. If your transmitter does not have sufficient func-
tions - electronic trims in particular - you will need to use the mixer, Order No.
9920.86.
Centre of Gravity range
The Centre of Gravity of the
HoTT-FAN
should be in the range 50 to 60 mm with the
fan unit retracted. The CG will be within this range without the need for ballast, pro-
vided that you are using the recommended LiPo flight battery. The CG position can
be checked by supporting the model under both wing roots at the stated point; the
model should then balance level.
First fight
First give the LiPo and transmitter batteries a full charge.
It is important to use the
recommended chargers exclusively, and to observe the operating instructions
and safety notes supplied with the charger.
Prepare the model carefully before test-flying, and wait for a day with flat-calm
conditions or just a light breeze, as controlling the model in windy conditions is too
difficult for a beginner to model flying. A large, open field, either flat or sloping gently
into wind, makes a good flying site. On no account launch the model between buil-
dings or trees, as it will be much more difficult to control when the air is turbulent. For
the first flight of any model aircraft it is helpful if an experienced modeller checks the
aeroplane for you, and stands by your side during the first few flights.
Start the fan unit, and launch the model firmly forward into any breeze; do not throw
it! Running forward for a few paces gives the right launch speed.
The model’s nose
should be inclined up by about 15° when it leaves the launcher’s hand.
It is essential to trim the model carefully, especially during the first flight; this is car-
ried out by adjusting the trim buttons below and to one side of the primary sticks.
Adjust the aileron trim so that the model flies straight and level. Always land directly
into wind, with the fan switched off. Slow the model down just before touch-down by
cautiously applying up-elevator. Always land into wind.
