All settings for throttle and collective pitch must be completed before the TAIL
ROTOR mixer is configured. Subsequent changes usually require a correction.
The TAIL ROTOR mixer is only activated in the Damping mode of the gyro. In
Heading mode, it is switched off (see section 4.4.5 "Gyro" on page 128). If you do
not use Damping mode, you can replace the mixer with the RUDDER control function
(Servo > Assign main menu, see section 4.6.2 "Assign" on page 149).
Coll.+ / Coll.-
Separate configuration of the collective pitch mixers for the tail rotor when
climbing and descending:
o Coll.+: correction for climbing
o Coll.-: correction for descending
The exact values can only be established through a programme of flight
testing, and vary according to many parameters.
Rudd.Diff.
Reduce tail rotor travel in one direction.
Offset
Set the pitch angle of the tail rotor at 0º collective pitch on the main rotor.
Origin
The origin for the static tail rotor compensation mixer.
Starting from this collective pitch setting angle in the direction of "climbing", the
"Collective -> Tail rotor" mixer is added using the value set for Coll.+. The
value set for Coll.- is applied in the opposite direction (descending).
4.5.2.2 MAINROTOR
You control the main rotor of your helicopter model with the MAINROTOR mixer.
The PROFI TX features a universal swashplate mixer (CCPM) which can be used
to control all types of swashplate fitted with 3 to 4 linkage points / servos.
Refer to section 7.2.5 "Checking and adjusting the main rotor" on page 195 for
information on how to check and adjust the main rotor and for a detailed
description of the workflow for the MAINROTOR mixer.
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