FUTABA 9 CHP SUPER Instruction Manual page 33

Engine idle management: IDLE-DOWN and THR-CUT: functions which work with the digital T
simple, consistent means of engine operation. No more fussing with getting trim in just the right spot for landings or take
offs! For additional engine adjustments, see THROTTLE-NEEDLE (p. 58) and THROTTLE DELAY (p. 59).
IDLE-DOWN (ACRO only): lowers the engine idle for: sitting on the runway prior to take off, stalls and spins, and landings.
The normal idle setting is a little higher for easier starts and safe flights with less risk of dead sticks.
This may be assigned to any switch/position. Some modelers accidentally assign IDLE-DOWN to one side of a switch
and THR-CUT to the other. There is no "normal" setting to start the engine. By default IDLE-DOWN is set to S
C center and down. This works well with THR-CUT also on S
center for slower maneuvers/landing, and down to cut the engine. If you assign IDLE-DOWN or THR-CUT to the spring-
loaded T S
RAINER WITCH
deadstick for your student.
GOAL of EXAMPLE:
Decrease the throttle setting at idle
with the flip of a switch for spins and
landings.
Where next?
*Normally a value of 10- 20%. Secure the fuselage, engine running. Set the T
switch ON and OFF until the desired idle is achieved. Be sure to throttle up periodically to allow the engine to "clean out" and idle reliably.
Important note: The IDLE-DOWN function is not normally used when starting the
engine, and its accidental operation may keep your engine from starting. The 9C
super warns that IDLE-DOWN is on when the transmitter is turned on. Be sure to turn
off the function, or override the warning by pressing both 2 S
unison and holding for 1 second if you intended the function to be on.
F (9CA) or H (9CH), then use the trainer function, you may risk loss of throttle control or
STEPS:
Open BASIC menu, then open IDLE-
DOWN function.
Activate the function.
With T
HROTTLE
the rate until engine idles as desired.*
Optional: change switch assignment.
Choose desired switch and position.
Close.
THR-CUT: see p. 34.
C down. The S
WITCH
INPUTS:
S at idle, adjust
TICK
to idle. Adjust the IDLE-DOWN rate while flipping the
S
HROTTLE TICK
33
T to provide a
HROTTLE RIM
/C
ELECT URSOR
up is normal flight/starting,
WITCH
for 1 second.
(If
ADVANCE,
to IDLE-DOWN.
T S .
HROTTLE TICK
until engine idles as desired.
to SW. to desired S
to POSI. to desired position.
keys in
WITCH
again.)
.
WITCH