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Splined Horns - FUTABA MAGNUM SPORT FP-2P Instruction Manual

Digital proportional radio control

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——.-
Wood screw
Receiver antenna
wire
3]
«
Rubber bushing
LL
Gronmet
Scissors
®
®
Fig. 11
Fig. 10
è Install the servos firmly.
Install the servo to the servo tray
as shown
in the figure.
In other cases, install the servo as
described in the model manufacturer's manual.
è A spare horn is provided.
Use it as required.
è Wrap
the
receiver
in sponge
rubber
and
wrap
rubber
bands
around
the
sponge rubber.
Mount the receiver so it is not exposed to vibration, does
not touch the frame, and does not move.
@ When
the receiver
is installed on a board or used where it may be splashed
with mud
and water, place it in a plastic bag, etc. and wrap a rubber band
around
the open
end of the bag to waterproof and dustproof the reciever.
After use, remove the receiver from the bag to prevent condensation.
e Use the rubber
bands wrapped
around
the receiver to hold the servo and
switch leads.
e After mounting is complete, recheck each part, then check the transmitting
range by making the transmitter antenna as short as possible and extending
the receiver antenna
fully and operating the set from a distance of 20m to
30m.
The
movement
of each
servo
should
follow the movement
of the
transmitter sticks.
è The crystal can be changed
from the outside of the receiver case.
Always
use a Futaba transmitter
and receiver crystal pair as the replacement crys-
tals.
MOTOR CAR
Operation
of the throttle
(engine control)
servo
can
be set as
shown in this figure by (2) throttle trigger operation.
NEUTRAL
POSITION
Settable within
this range with the
@ throttle trim.
@ Throttle trigger
brake stroke
@ Throttle trigger
throttle stroke
egeing
53
fe
Throttle.(engine control) servo
Fig. 12
e See
the
figure
for
the
motor,
battery,
and
speed
controller
wiring.
Brake
Speed
control
control
rT
hhh
Motor and controller
circuit diagram
a When
the drive battery
is also used
as the receiver
servo
power
supply
with a moto-driven
car, pay careful attention to the power
supply polarity
and voltage.
With
Futaba
proportional
R/C
power
supplies,
red represents
©
and
black represents © .
USING THE ANTENNA
FREQUENCY
FLAG
@SPLINED HORNS
This
horn
permits
shifting of the
servo neutral
position at the servo
horn.
Setting
and
shifting
the
neutral position
a) Angle divisions
Fig. 16
1) The
splined
horn
has 25 seg-
ments. The amount
of change per
segment is; 360+25=14.4°
2) The minimum adjustable angle
is determined
by the number
of
arms or number of the holes. For
four arms, the minimum adjustable
angle is:
(25 x 4)
o
o.
Z
360
+ Number of divisions
R
b) Effect
~ Baseline A
Insert the frequency
flag
into
the
flag
as
shown
The flag can be attached
to and removed
from the
end of the antenna
with
one touch.
Staple or glue with cyano-
acrylate ribbon here.
Fig. 15
To
shift the holes center
line to
the
right
(clockwise)
relative
to
baseline A, shift arm
2 to the po-
sition
of arm
1 and set it to the
position closest to baseline A.
[Example]
For a four arm horn,
the
angular
shift
per
segment
is
14.4°. The shift to the right is 90°
— (14.4 x 6) = 3.6°
To shift by the same angle in the
opposite
direction, use the oppo-
site arm number.
Fig. 18
For a six arm horn, turn the arm
counterclockwise
and set
arm
2
to the position of arm
1. The ad-
justable angle is 60° — (14.4 x 4)
=2.4°.
Arm 3 shift 4.8° to the right, arm
6 shifts 2.4° to the left,and arm 4
shifts 7.2° to the right and left.

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