Spektrum SPM18000 DX18QQ - Manual (Page 51)

51 www.spektrumrc.com EN
Governor
The governor function is used to set
the rotor head speed when used with
a governor installed in the helicopter.
The governor onboard will control the
engine RPM to maintain the head speed
desired. You can program values for
each switch position or fl ight mode. RPM
values can be programmed in 0.5% steps.
To Program the Governor Function:
1. Access the Governor menu option.
2. Program the RPM values by rotating the scroll wheel to the desired value.
3. Press the scroll wheel and rotate it to the desired value. Press the scroll wheel
again to save the value.
IMPORTANT: The value in the display is the corrected value. 0% is 1.5ms or
OFF for most governors. Repeat this for all governor settings.
4. Assign the output channel for the Governor. The Governor and the Gyro must
be on different channels. We recommend using AUX2 for the Governor output
channel.
5. Select a switch to control the Governor.
6. Press the BACK button to save the selections and return to the Function List.
Tail Curve
The Tail Curve function mixes tail rotor
input with the throttle/collective function
to counter torque from the main rotor
blades when using a non-heading hold
(tail lock) gyro or when using rate mode
on a gyro. See Pitch Curve for more
information on programming curves.
Mixing
Cyclic to Throttle
Cyclic-to-throttle mix prevents rpm loss
when aileron, elevator or rudder inputs
are given. This mix advances the throttle
position with cyclic or rudder control
to maintain rpm. At full throttle, Cyclic-
to-Throttle mixing prevents the throttle
from overdriving the servo.
IMPORTANT: Do not use Cyclic to throttle mix when using a governor.
To verify that the Cyclic to Throttle mix is working properly and in the correct
direction, move the fl ight mode switch to one of the active positions. Move the
programmed cyclic or rudder channel, noting the throttle position. The throttle
position should increase.
If the throttle decreases, then the opposite value (positive vs. negative) is needed.
Swashplate
The Swashplate Mix typically corrects swashplate timing issues by mixing Aileron
to Elevator and Elevator to Aileron. When adjusted correctly, the Swashplate
causes the helicopter to roll and pitch accurately with minimal interaction.