80
THR-HOLD
: This function holds the engine in the idling position and disengages it from the
THROTTLE STICK
when
SWITCH E
-+RU*-$LVPRYHG,WLVFRPPRQO\XVHGWRSUDFWLFHDXWRURWDWLRQ
Prior to setting up
THR-HOLD
KRRNXSWKHWKURWWOHOLQNDJHVRWKDWWKHFDUEXUHWRU
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
WKHLGOHSRVLWLRQ7KHQPRYHWKHKROG6:,7&+RQDQGRIIDQGNHHSFKDQJLQJ
the offset value until the servo does not move. To lower the engine idle speed,
or if you want to shut the engine off, input a higher negative number.
Adjustability:
,GOLQJSRVLWLRQ
Range of
-50%
to
+50%
centered about the throttle idle position to get the desired engine RPM.
6ZLWFKDVVLJQPHQW
Assigned to
SWITCH G
(8JA) or
E
-+GRZQ
Adjustable in the
CONDITION SELECT
(
THR-HOLD
item).
SRVLWLRQW\SHVZLWFKRQO\
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
SLWFKUDQJHRI
°
to +10
°
to +12
°
, is automatically activated with
THR-HOLD
.
5HYRPL[
Since revo. mix adjusts for torque from the engine, no revo. mix is
available for
THR-HOLD
.
Priority:
7KHWKURWWOHKROGIXQFWLRQKDVSULRULW\RYHULGOHXS%HVXUHWKDWWKHWKURWWOHKROGDQGLGOHXS
SWITCHES
are
in the desired positions before trying to start the engine. (We recommend starting your engine in throttle hold for safety
reasons.)
*\UR
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.
GOAL of EXAMPLE:
STEPS:
INPUTS:
Set up throttle hold.
Determine desired throttle position of
the idling engine, turn on
THR-HOLD
, and
adjust percentage as required to reach
the desired running point.
Open
THR-HOLD
function.
for 1 second.
to
THR-HOLD
.
Activate the function.
to
MIX
.
to
OFF
.
Set desired engine position.
to
RATE.
to desired percent.
Close.
Where next?
PIT-CURVE
IRU7+5+2/'VHHS
DELAY
for
THR-HOLD
(to ease collective pitch response): see p. 84.
GYRO
setup: see p. 87.
6HWWLQJ XS WKH ,GOH8SV 7KURWWOH DQG &ROOHFWLYH SLWFK &XUYHV DQG 5HYR
Mixing(
TH-CURVE, PIT-CURVE, REVO. MIX
IRULGOHXSVVHHS
D/R
,
EXP
: see p. 39.
Summary of Contents for T8J-2.4G
Page 93: ...93...
