19
This menu is for setting control functions for use with helicopters. See the MODEL SETUP MENU –
AIRPLANES section for functional descriptions of most menus. A swashplate type selection function is
included for helicopters. With the model type set to helicopters, press
ENTER
for 2 seconds to access
this menu from the home screen.
All channels for helicopters are assigned as shown in the chart on page 6.
SWASHPLATE TYPE
Enter this screen to select the type of swash plate in the helicopter. Setting this properly allows for proper
mixing of all controls for the main rotor. Three options are available, with some offering cyclic and collective
pitch mixes (CCPM) for optimum simplicity and performance. It may be necessary to reverse the direction
of a control when using a CCPM mix to achieve the proper functionality.
1 Servo (90º):
Tilting of the swash plate is accomplished with one
servo for control of the elevator axis and one servo for the aileron
axis. Another servo directly controls collective pitch. Selecting this
swash type means that no swash plate mixers are required or used.
This is typically used for fl ybarless systems.
3 Servos (120º):
For CCPM with three servos connected to the
symmetrical swash plate at 120º angles from each other. One pitch
servo, one elevation servo, and one aileron servo are connected
to the swash plate. See the chart to the right for proper connection
of all servos to the receiver.
3 Servos (140º):
For CCPM with three servos connected to the
swash plate. The connections are similar to the 3 Servos (140º)
setting but with slightly different geometry (two servos are connected
at 135º angles forward from the rear of the swash plate). See the chart above for servo connections.
Functions for helicopters are available to support models with various fi xed mixes, programmable mix
options, swash types. Press
ENTER
briefl y to access this menu.
Setting of many functions is the same as described for airplanes in the previous sections. However, if using
a helicopter which has CCPM mixing, read the SWASHPLATE TYPE section above before adjusting the
reversing and travel limits settings.
THROTTLE CURVE
The throttle’s output is normally linear in relation to movement of the throttle stick. A non-linear relation
between the movement of the throttle stick and the throttle in the model can allow for optimum control of
power to the model (which is also linked to the control of the pitch of the main rotor blades). These non-
linear control curves can be customized for the particular model.
The idle-up function is used to optimize the throttle position for all fl ight envelopes including aerobatic fl ight.
By default the TTX850 assigns switch E as the idle-up control switch. This switch incorporates one “normal”
and two “up” functions within the three positions of the switch.
MODEL SETUP MENU – HELICOPTERS
CH 2
Elevator
3 servos 120° & 140°
CH 3
Pitch
CH 4
Rudder
CH 5
Gyro
CH 6
Throttle
CH 7
Aux 1
CH 8
Aux 2
CH 1
Aileron
SETTINGS MENU – HELICOPTERS
