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5.3.4 THROTTLE HOLD
This function holds the engine in the idling position and disengages it from the THROTTLE STICK when
SWITCH AT9 is moved. It is commonly used to practice auto-rotation. Prior to setting up THR-HOLD,
hook up the throttle linkage so that the carburetor is opened fully at high throttle, then use the digital trim to
adjust the engine idle position. To have THR- HOLD maintain idle, move the THROTTLE STICK to the
idle position, then move the hold SWITCH on and off and keep changing the offset value until the servo
does not move. To lower the engine idle speed, or if you want to shut off, input a more negative number.
ADJUSTABILITY:
•
Idling position: Range of -50% to +50% centered about the throttle idle position to get the desired engine
RPM.
•
Switch assignment: Assigned to SWITCH E(AT10) or G (AT10) down. Adjustable in the CONDITION
(THR-HOLD item), (2-position type switch only)
•
Throttle curve: Since the throttle is moved to a single preset position, no curve is available for
THR-HOLD.
•
Collective pitch curve: Independent curve, typically adjusted to create a blade pitch range of -4% to +10%
to +12%, is automatically activated with THRHOLD.
•
Revo. mix: Since revo. mix adjusts for torque from the engine, no revo. mix is available for THR-HOLD.
•
Priority: The throttle hold function has priority over idle-up. Be sure that the throttle hold and idle-up
SWITCHES are in the desired positions before trying to start the engine. (We recommend starting your
engine in throttle hold for safety reasons.)
•
Gyro: Gyro programming includes an option to have a separate gyro setting for each condition, including
THR-HOLD. This avoids the potential problem of the user being in the wrong gyro setting when going to
THR-HOLD, resulting in an improper rudder offset and the model pirouetting.
Goals
Steps
Inputs
S
et
up throttle hold.
Determine desired throttle
position by idling engine, turn
on THR-HOLD, and adjust
percentage as required to reach
the desired running point.
Open THR-HOLD
function.
for 1s to BASIC.(If ADVANCE
again)
to THR-HOLD
Activate the function.
to MIX
，
to OFF
Set desired engine
position.
to POSI
，
to desired percent
Close
5.3.5 HOVERING ADJUSTMENTS (HOV-THR and HOV-PIT):
Hovering throttle and hovering pitch are fine-turning adjustments for the throttle and collective pitch curves
individually, affecting performance only around the center point and only in the normal condition. They
allow in-flight tweaking of the curves for ideal setup.
ADJUSTABILITY:
• Rotor speed changes caused by temp., humidity, altitude or other changes in flying conditions are easily
Close
