Manual Graupner MC 32 HOTT (page 326 of 345) (English)

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326 Programming examples - F3A model

• of control travel then brieﬂy tap on the centre SET

key of the right touch pad.

• In order to attain the curve shape shown, raise this

point with the selection keys to approx. 0 % in the

inverse video value ﬁeld in the "Point" line.

• Finally, round the characteristic curve by moving

the marker frame left, select with a brief tap on the

centre SET key of the right touch pad then change

the value from "Off" to "On" with the selection

keys.

If additional interpolation points between the left ("L")

and right ("H") end are necessary, repeat Steps 1 and

2 analogously.

Since F3A models normally have two aileron servos,

experience has shown that it is beneﬁcial to move

both ailerons upward somewhat when landing. In the

process, the model usually approaches somewhat

slower and, above all, more steadily for the landing.

In order to do this it is necessary to program mixers

through the menu …

»Free mixers« (beginning page 209)

… accordingly.

The ailerons are extended as landing assistance

depending on the position of the throttle stick, start-

ing from approximately half throttle toward idle. The

further the stick is moved toward idle, the more the ai-

lerons deﬂect upward. Just the opposite applies when

"throttling"; the ailerons are retracted again in order to

prevent a sudden rise of the model.

In order to prevent the model from climbing with the

aileron landing ﬂaps extended, the elevator must be

mixed in somewhat.

For this purpose, set the two linear mixers shown in

the following display.

The activation of the mixers takes place with one and

the same switch, such as "8", to which both mixers

must be assigned with identical switching direction.

LinearMIX 1

type

from – Begr. +

––––

LinearMIX 2

LinearMIX 3

LinearMIX 4

LinearMIX 5

to Adjust

––––

Then switch to the second respective display screen

in order to adjust the respective mixing degrees. In

both cases the mixer neutral point is at the C1 control

centre.

Enter 0 % above the control centre after selection of

the ASY ﬁeld for both mixers and below the control

centre toward idle for:

MIX 1: -60 % ... -80 % and

MIX 2: -5 % ... -10 % ...

Example Linear MIX 1:

Mix input

Offset

Linear MIX 1

–70%

SYM ASY SET

STO

With this, the base setup model of an F3A model is

concluded.

Compensation of model-specic errors

Unfortunately, there are nearly always minor model-

speciﬁc "errors" through the mixers of a computer

remote control which must be compensated for. How-

ever, before you begin with these settings, it should

be ensured that the model is faultlessly constructed,

optimally balanced over the longitudinal and trans-

verse axes and the down thrust and side thrust are

correct.

Inuence of longitudinal and transverse axes by

the rudder

The actuation of the rudder often inﬂuences the be-

havior of the longitudinal and transverse axes. This is

particularly disruptive in so-called knife-edge ﬂying,

in which the lift of the model with the rudder deﬂected

should be created by the fuselage alone. In the pro-

cess, the model can rotate and change directions as

though it were controlled with the ailerons and eleva-

tor. Therefore, a correction over the transverse axis

(elevator) and/or the longitudinal axis (ailerons) must

be made, if applicable.

This can also be done easily with the »Free mixers«

available in the mc-32 HoTT system. For example,

if the model drifts away to the right over the longitudi-

nal axis with the rudder extended in knife-edge ﬂying,

the aileron can be deﬂected slightly to the left with the

mixer. Changes in direction over the transverse axis

can be performed analogously with a mixer on the

elevator:

• Correction over the transverse axis (elevator)

Linear MIX 3: "Rudd  Elev"

Asymmetric setting. The appropriate values must

be tested in ﬂight.

• Correction over the longitudinal axis (aileron)

Linear MIX 4: "Rudd  AIL"

Asymmetric setting. The appropriate values must

be tested in ﬂight.

Relatively small mixer values are usually sufﬁcient

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