Hovering Adjustments (Hov-Thr And Hov-Pit) - RadioLink AT9S PRO Manual

• 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
Set 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.

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
accommodated.
• Both adjustments may be inhibited if not desired.
• Both adjustments may also be set to NULL, temporarily turning off the knob but maintaining the last
memorized setting.
• Adjustments may be memorized and then the knobs returned to center point to use that amount of
adjustment, allows easy use of the trimming knobs for multiple models. (Note that when memorization is
repeated with the knob offset from center, the trim value accumulates.)
• Adjustments are quickly reset to the initial value by turning the dial until the trim reads 0%, memorizing, then
returning the knob to its center position.
• Note that all functions, including these, assume the model hovers at half stick.
•Available in normal (NORM) or normal/ idle-up1 (NORM/IDL1) condition only.
Steps
Open THR-HOLD
function.
Activate the function.
Set desired engine
position.
Close
69
Inputs
for 1s to BASIC.(If ADVANCE
again)
to THR-HOLD
to MIX to OFF
，
to POSI ， to desired percent
Radiolink Electronic Ltd
www.radiolink.com