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Robbe Futaba FF-10 Manual

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65
THROTTLE-NEEDLE
mixing (
ACRO
/
HELI
):
THROTTLE-NEEDLE
is a pre-programmed mix that automatically moves an in-fl ight mixture servo (CH8) in response to the
THROTTLE STICK inputs for perfect engine tuning at all throttle settings. This function is particularly popular with
contest pilots who fl y 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 fl ooding 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-fl ight mixture servo must connect to receiver CH8.
• In-fl ight mixture servo may also be used as a second servo for tuning a twin.
• Throttle cut feature also moves the in fl ight 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 fi t your engine and your fl ying 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.
GOAL of EXAMPLE: STEPS: INPUTS:
Activate
THROTTLE-NEEDLE
mixing.
Adjust the points as follows to resolve
a slight lean midrange problem:
1: 40%
2: 45%
3: 65%
4: 55%
5: 40%
Open the
THROTTLE-NEEDLE
function.
for 1 second.
(If
BASIC
, again.)
to page 2.
C
to
THROTTLE-NEEDLE
.
Activate the function.
C
to
MIX
. to
ACT
.
HELI
only. Select the condition to edit.
C
to
MIX
. to
ACT
. as needed.
Adjust the travels as needed to match
your engine by slowly moving the stick
to each of the 5 points, then adjusting
the percentage at that point until the
engine is properly tuned.
C
to
POINT-
.
THROTTLE STICK to
POINT1
.
to
40%
.
until
POINT 2
is highlighted.
to
45%
.
to
POINT 3
. to
65%
.
to
POINT 4
. to
55%
.
to
POINT 5
. to
40%
(
HELI
)(
ACRO
)
… 65 …


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