Throttle-Needle Mixing (Acro/ Heli) - RadioLink AT9S PRO Manual

Radiolink Electronic Ltd
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3.3.15 THROTTLE-NEEDLE mixing (ACRO/ HELI):

ACRO HELI
THROTTLE-NEEDLE is a pre-programmed mix that automatically moves an in-flight mixture servo (CH8) in
response to the THROTTLE STICK inputs for perfect engine turning at all throttle settings. This function is
particularly popular with contest pilots who fly in a large variety of locations, needing regular engine tuning
adjustments, and requiring perfect engine response at all times and in all maneuvers. Also popular to
minimize flooding at idle of inverted engine installations or installations with a high tank position. Not needed
for fuel injection engines, which do this automatically.
Adjustability:
• Five-point curve allows adjustment of engine mixture at varied throttle settings.
• The in-flight mixture servo must connect to receiver CH8.
• In-flight mixture servo may also be used as a second servo for tuning a twin.
• Throttle cut feature also moves the in flight needle servo.
• The CH8 knob adjusts the high throttle mixture (may be deactivated. see AUX-CH).
• Because both use CH8, this function cannot be used simultaneously with AILEVATOR.
• An acceleration (ACCE) function (ACRO only) helps the engine compensate for sudden, large amounts of
throttle input by making the mixture suddenly richer, then easing it back to the proper adjustment for that
throttle setting. This function requires some adjustment to best fit your engine and your flying style. Adjust
engine's response until no hesitation occurs on rapid throttle input.
• Separate curves are available (HELI only) for normal, idle-ups 1 and 2 combined, and idle-up 3. Immediately
below MIX the radio displays the curve you are editing; ex: >NORML; and then which condition is currently
active by your switches ex: (ID1/2). Note that you can edit the mix for a different condition without being in that
condition, to allow editing without having to shut off the helicopter's engine every time. Be sure you are editing
the proper curve by checking the name after the > and not the one in parentheses.
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