Futaba 2PKA AM - Manual (Page 6)

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
0) throttle trim knob.
(2) Throttle trigger
throttle stroke
(2)Throttle trigger
brake stroke
Adjustable
within this
range by
throttle
ATV Low.
(FP-T2PKA)
Throttle (engine control) servo
• When the drive bat-
tery is also used as
the receiver servo
power supply with a
motordriven car, pay
careful attention to
the power supply
polarity and voltage.
With Futaba propor-
tional R/C power
supplies, red repre-
sents + and black
represents - .
OFF
QwOQOwwvO
6 Adjustable
within this
range by
throttle
ATV High.
(FP-T2PKA)
Fig. 17
•See the figure for the motor, battery.
and speed controller wiring.
Brake Speed
control control
Motor and controller
circuit diagram
Fig. 18
USING THE ANTENNA FREQUENCY FLAG
Fig. 19
•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. 20
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:
3 6 0 ° - — — — ( 2 5 X 4 ) — — — 3 . 6 °
Number of divisions
b) Effect
Baseline A
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.
E x a m p l e 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. 21
Fig. 22
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 0 .
Arm 3 shift 4.8° to the right, arm
6 shifts 2.4° to the l e f t , a n d arm 4
shifts 7.2° to the right and left.
Fig. 23
The following splined horns are optional.
H O R N A H O R N B H O R N C H O R N D H O R N E HORN F
Fig. 24