Motor Car; Using The Antenna Frequency Flag; Splined Horns - FUTABA 2PKA Instruction Manual

MOTOR CAR

Operation of the throttle (engine control) servo can be set as
shown in this figure by 2, throttle trigger operation.
(2) Throttle trigger
throttle stroke
6 Adjustable
within this
range by
throttle
ATV High.
(FP-T2PKA)
Throttle (engine control) servo
•See the figure for the motor, battery.
and speed controller wiring.
Brake Speed
control control
OFF
QwOQOwwvO
Motor and controller
circuit diagram
The following splined horns are optional.
H O R N A
NEUTRAL POSITION
Settable within
this range with the
0) throttle trim knob.
(2)Throttle trigger
brake stroke
Adjustable
within this
range by
throttle
ATV Low.
(FP-T2PKA)
• When the drive bat-
tery is also used as
the receiver
power supply with a
motordriven car, pay
careful attention to
the power
polarity and voltage.
With Futaba propor-
tional R/C
supplies, red repre-
sents + and black
represents - .
Fig. 18
HORN B

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. 17
1) The splined horn has 25 seg-
ments. The amount of change per
segment is; 360-25=14.4°
servo
2) The minimum adjustable angle
is determined by the number of
arms or number of the holes. For
four arms, the minimum adjustable
supply
angle is:
3 6 0 ° - — — —
Number of divisions
power
b) Effect
H O R N C H O R N D
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-
Fig. 20
site arm number.
For a six arm horn, turn the arm
counterclockwise and set arm 2
( 2 5 X 4 )
— — — 3 . 6 °
to the position of arm 1. The ad-
justable angle is 60° - (14.4 x 4)
0
=2.4 .
Arm 3 shift 4.8° to the right, arm
Baseline A
6 shifts 2.4° to the l e f t , a n d arm 4
shifts 7.2° to the right and left.
Fig. 21
H O R N E
Fig. 19
Fig. 22
Fig. 23
HORN F
Fig. 24