Operation Manual

Instructions
Seite 27
ENGLISH
Throttle limiter
We strongly recommend the use of the throttle limiter.
This is slider F in the model templates.

TIP: Changing the assignment
If you wish to re-assign the throttle limiter (and also the
idle setting: idle forward/back) you can change it at any
time. (Î 13.3 L Setup, Assignment)
When the throttle limiter is at the idle position, the mo-
tor runs at a rotational speed dictated by the parameter
Min. (Î 14.2.10), For safety reasons the collective pitch
stick has no influence on throttle at this position. The
motor can now be started safely. Fine adjustment of the
motor’s idle speed is available at any time quickly and
simply using the trim associated with the collective
pitch stick. Set the model on the ground at the take-off
patch and move a safe distance away, then check that
the collective pitch stick is at collective pitch minimum
before slowly moving the throttle limiter to the full-
throttle position. The motor will now accelerate to the
throttle value corresponding to collective pitch mini-
mum (throttle curve P1 Î 14.2.10). The throttle curve is
now “released”, and the model is ready to fly. Throttle is
controlled by collective pitch via the throttle curve you
have already set.
max.
+100%
+50%
0%
min.
Throttle
Collective pitch stick
Range blocked by
throttle limiter
Helicopter throttle curve
Programmed
throttle curve
Actual course
of throttle
Throttle limiter
Direct Throttle
For testing and adjusting the motor the ROYALevo
of-
fers the Direct Throttle facility. Direct throttle means
that the motor can be controlled from idle to full-
throttle using the throttle limiter, independently of the
collective pitch stick. For example, the motor can be set
to full-throttle on the ground for testing, and can be
loaded with negative blade pitch (minimum collective
pitch) (keep a safe distance!). The Combi-Switch is used
to activate the Direct Throttle function (Î 13.3.5.).
!
Caution
Ensure that the throttle limiter is at idle before you acti-
vate Direct Throttle, otherwise the motor may run up to
full-throttle immediately!
+100%
+50%
0%
Throttle
Helicopter throttle
Throttle limiter
Trim
range
(20%)
Idle
(Throttle min. + Trim)
Throttle curve
Throttle min.
Note:
Motors are not switched OFF by means of the trim but
with the Throttle-cut awitch (Î 13.3.5).
Step
X
Before test-flying
Your newly created model is now ready to fly. Before
you operate the model for the first time be sure to test
all the working systems carefully.
You will probably need to fine-tune various aspects of
the control system, especially relating to mixers and
transmitter control settings, and this is done during the
test-flying process. Don’t be tempted to make changes
in a menu while the model is in the air. The safe, con-
venient method of altering values is to use the 3-D digi-
adjustor (Î 10.2.2).
Step
Y
Activating flight phases
Once you have test-flown the model in one flight phase
(usually the Hover flight phase) and successfully
trimmed it out, with all the mixer and transmitter con-
trol values set to your satisfaction, you can consider
setting up additional flight phases (if you wish). Flight
phases enable you to optimise the model for use in
different flight situations. The first step is to activate a
new flight phase and copy the values from the first
flight phase into the newly activated phase (Î 18.4).
The transmitter control settings can now be adjusted (H
Control menu) to suit the new task, especially the col-
lective pitch curve and throttle curve. All the transmitter
control settings marked with a small number (1 ... 4) can
be adjusted separately for each flight phase (Î 14).
Step
Z
“Expert tips”
Mixer Thr.comp. (Yaw/Roll/Pitch axisÆThrottle)
When the pitch angle of the main rotor blades (collec-
tive pitch) is changed, the throttle setting also has to
change in order to maintain a constant system rota-
tional speed. However, the same applies when large
cyclic control travels (roll, pitch-axis) or major yaw
commands are made, i.e. they require a corresponding
increase in the throttle setting. The mixer Throttle com-
pensation (Î 15.6) is used for this.
Mixture mixer
Some glowplug motors feature a carburettor with vari-
able mixture facility, for which a separate servo is used
to maintain the optimum mixture at all throttle settings
(carburettor openings). One example of this is the WE-
BRA mc carburettor. The ROYALevo
offers a special
feature for this type of carburettor: