Bedienungsanleitung Graupner MX-16 HoTT (Seite 183 von 200) (Englisch)

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Programming example: F3A model

stick mode

motor at C1

tail type normal

cut off +150%–100% 9

aile/flap 2aile

idle re.

The remaining settings should be adjusted as required

to suit your personal preferences.

You may ﬁnd it necessary to assign transmitter controls

to particular inputs to operate the retractable undercar-

riage and carburettor mixture adjustment. This is carried

out in the …

“Transmitter control settings” menu (page 94).

For example, you may like to assign a particular trans-

mitter control - perhaps one of the ON / OFF switches

SW 2 or 8 - to the input “E8” for the retracts, and a rotary

proportional control - e. g. CTRL 6 - to the input “E7”, for

mixture adjustment.

trv

ctrl 6

free

+100%

The retracts are extended and retracted when you oper-

ate the switch “SW 8”. You may need to adjust the travel

of the transmitter control, and perhaps reverse that

channel by setting a negative preﬁx for servo travel.

F3A models ﬂy fairly fast, and respond very “solidly” to

corrective movements of the servos. However, in com-

petition ﬂying it is vital that all abrupt control movements

model suddenly ballooning up.

A little down-elevator must usually be mixed in to ensure

that the aeroplane does not climb when the ailerons /

ﬂaps are deployed.

To meet these requirements you need the two mixers

shown in the illustration below.

typ fro

The mixers are activated using one and the same ex-

ternal switch, e. g. “SW 3”, which therefore has to be as-

signed to both mixers, with the same direction of effect.

Touch the central SET button of the right-hand touch-key

to move to the mixer inputs on the second screen page,

and set the appropriate mixer ratios. In both cases the

mixer neutral point should be left at the centre position

of the Ch 1 stick travel.

For this reason you should now move the Ch 1 stick to

the Idle range, select the ASY ﬁeld, and enter the follow-

ing values:

MIX 1: -60% … -80% and

MIX 2: -5% … -10%.

and corrections should be kept to a minimum, as the

judges will invariably notice any lack of smoothness and

dock a few points, so it is advisable to set exponential

control characteristics on the stick functions.

Move to the …

“D/R Expo” menu (page 102).

Exponential values of around +30% on aileron, elevator

and rudder have proved to be a good starting point, and

you can set them in the right-hand column of this menu.

These values provide smooth, well-deﬁned control of

the typical F3A model. Many experts use higher values;

even up to +60% exponential.

100%

+33%

aile

elev

rudd

DUAL EXPO

–––

+33%

Since F3A models generally have two aileron servos, it

has proved useful to deﬂect both ailerons “up” slightly for

the landing. In most cases this causes the model to ﬂy a

little more slowly and with a more stable attitude on the

landing approach.

To achieve this you will need to program mixers in the …

“Free mixers” menu (section starting on page 127).

Both ailerons are usually required to deﬂect “up” as a

landing aid, in parallel with the movement of the throttle

stick, but only from the half-throttle setting in the direc-

tion of idle. From that point on, the further the stick is

moved towards the idle position, the more the ailerons

deﬂect up. The reverse occurs when you open the

throttle: the ailerons are returned to neutral to avoid the

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Graupner MX-16 HoTT Seite 183

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