GRAUPNER mx-16 ifs, Programming Manual

Page: 30 / 132

30 Installation Notes
chanical linkage can obstruct the servo in its move-
ment.
The sequence in which the servos are connected to the
receiver is dictated by the model type. Please see the
socket assignments listed on pages 37 / 38 and 41.
Be sure to read the safety notes on pages 3 … 5.
If the receiver is ever switched on when the transmitter
is off, the servos may carry out uncontrolled movements.
You can avoid this by switching the system on in this
order:
Always switch the transmitter on fi rst,
then the receiver.
When switching the system off:
Always switch the receiver off fi rst,
then the transmitter.
When programming the transmitter you must always
ensure that any electric motors in the system cannot
possibly burst into life accidentally, and that an I. C.
engine fi tted with an automatic starter cannot start
unintentionally. In the interests of safety it is always best
to disconnect the fl ight battery, or cut off the fuel supply.
The following section contains notes and helpful
ideas on installing radio control components in the
model:
Wrap the receiver in foam rubber at least 6 mm thick. 1.
Fix the foam round the receiver using rubber bands,
to protect it from vibration, hard landings and crash
damage.
All switches must be installed in a position where
2.
they will not be affected by exhaust gases or vibra-
tion. The switch toggle must be free to move over its
full range of travel.
Always install servos using the vibration-damping
3.
grommets and tubular metal spacers supplied. The
rubber grommets provide some degree of protection
from mechanical shock and severe vibration. Don’t
over-tighten the servo retaining screws, as this will
compress the grommets and thereby reduce the vi-
bration protection they afford. The system offers good
security and vibration protection for your servos, but
only if the servo retaining screws are fi tted and tight-
ened properly. The drawing below shows how to in-
stall a servo correctly. The brass spacers should be
pushed into the rubber grommets from the underside.
Servo mounting lug
Retaining screw
Rubber grommet
Tubular brass spacer
The servo output arms must be free to move over 4.
their full arc of travel. Ensure that no parts of the me-
Installation Notes
Installing the receiver
Regardless of which Graupner | iFS receiver you are
using, the procedure is always the same:
Please note that the receiver aerial must be arranged
at least 5 cm away from all large metal parts and leads
which are not attached or connected directly to the re-
ceiver. This includes steel and carbon fi bre components,
servos, fuel pumps, cables of all sorts, etc.. Ideally the
receiver should be installed in an easily accessible
position in the model, away from all other installed
components. Under no circumstances run servo leads
immediately adjacent to the receiver aerial, far less coil
them round it!
Please note that acceleration forces which occur in fl ight
might cause cables to shift when the model is operating.
For this reason ensure that all leads are prevented from
moving close to the aerial. Moving connections or cables
can cause interference to the system.
Tests have shown that a vertical (upright) installation of
the aerial gives the best results during long approaches.
The servo sockets of
Graupner | iFS receivers are
numbered. The socket marked “B/T” is intended for the
battery, but will also be used in future for the data con-
nection of the telemetry sensor.
The power supply is through-connected using all the
numbered receiver sockets.
The function of each individual channel is determined
by the transmitter in use, rather than by the receiver.
Please bear this in mind in particular if you wish to bind
the receiver to a different make of transmitter fi tted with
a
Graupner | iFS RF module.