Futaba MAGNUM JUNIOR, 2PKA User Manual

FEATURES OF MAGNUM JUNIOR

The Magnum series are pistol grip type of AM 2 channel digital proportional radio control sets and are the best in their class.

TRANSMITTER FP-T2PKA, (FP-T2PK)_____________

•	Newly designed cockpit type control panel
•	Human-engineered size and design are easy to use.

•Steering rate adjuster		The steering servo travel volume		(right 81 left
evenly from neutral) can be adjusted simultaneously, while running.
•Throttle ATV	The	throttle servo travel volume can be adjusted
and set with	two trimmers, independently.		FP-T2PKA
• Wheel angle adjuster.		The turning angle of	the steering	wheel can

be increased and decreased. This allows operation at the best angle

• Neutral adjuster. The throttle trigger throttle stroke/brake deflection stroke (back stroke) can be freely selected to match the application •Servo reversing switch (steering and throttle) is standard Each servo can be reversed from the outside. This is extremely convenient when

connecting the linkages.

•Since a level meter is provided, battery consumption can be seen at a glance.

•Crystal can be changed from the outside. Crystal can be immediately changed during competitions, etc. except 72 MHz and 75 MHz on transmitter.

•Power supply can be changed to a nicad battery system. FP-T2PKA

RECEIVER FP-R102GR_____________________

•BEC (Battery Eliminator Circuitry) system allows sharing of the running Nicd battery and eliminates the need for a regulator and diode.

•Crystal socket uses a new type of highly reliable subminiature pins. Reliability is increased and the crystal can be changed from the outside.

RECEIVER FP-R104H_______________________

•High performance AM 4 channel receiver in which miniature size and light weight have been achieved by using the PC board space to the maximum.

•Short (50cm) antenna designed for miniature models is easy to mount. (27MHz only)

•Narrow band design using a narrow band ceramic filter resists adjacent channel interference.

•Noise resistance achieved by using a pulse noise rejection circuit.

•New CMOS miniature 1C used in the data coder increases reliability

substantially.

•New type sub miniature, highly reliable pins used at the crystal socket also increase reliability The crystal can be changed from the outside.

•Thick film gold-plated connector pins eliminate poor contact and improve reliability against shock and vibration.

SERVO FP-S148, S129, S132H

•Motor uses the newest helical type rotor for improved output torque

and smooth operation. (S148, S129)

• These heavy-duty & water/dust tight servos are designed for use with Futaba digital proportional radio control sets (S129)

•New indirect driver potentiometer improves vibration and shock resistance and increases neutral precision tremendously.

•Futaba low-power custom 1C provides high starting torque, narrow dead band, and excellent trackability.

•Fiberglass-reinforced PBT (polybutylene terephthalate) injection molded servo case is mechanically strong and invulnerable against glow fuel.

•Strong polyacetal resin ultra-precision servo gear features smooth operation, positive neutral, and very little backlash.

•Fiberglass-reinforced epoxy resin PC board with thru-the-hole plating improves servo amp vibration and shock resistance.

•Thick film gold-plated connector pins eliminate poor contact and improve reliability against shock and vibration.

•Special grommet bushing simplifies servo mounting and improves the cushioning effect.

•Six special adjustable splined horns are available.

• Maximum output torque	of 48.7oz-in.(3.0kg-cm/3 5kg-cm) allows
use in almost any model	(S148, S129)

•High operating speed of 0.13 sec/60° makes it perfect when especially high speed is necessary. (S132H)

SET CONTENTS			AND		RATINGS
			MAGNUMJUNIOR
Transmitter		FP-T2PKA			FP-T2PK
Receiver			FP-R102GR or FP-R104H
Servo			FP-S148 x 2 or FP-S129 or
			FP-S132H
Others			Switch, battery holder, etc.
TRANSMITTER FP-T2PKA. (FP-T2PK)_____________
Operating system		: Pistol grip type, 2-channel
Transmitting frequency		: 27MHz band 72/75MHz band
Modulation system		: AM (amplitude modulation)
Power requirement			12V, AA penlight battery x 8
Receiver PP-R102GR ________________________
Receiving frequency			75MHz
Intermediate frequency			455kHz
Selectivity			:3kHz/-3dB
Receiving range		550 yards (500m) on the ground when
			used with FP-T2PKA (At the best radio
			wave condition of environment)
Power supply		4.8V to 8.4V
Current drain		7.2V/13mA, 4.8V/33mA
Dimensions		1.46 x 2.19 x 0.75 in. (37 x 55.5 x 19 mm)
Weight			1.34 oz (38g)
RECEIVER FP-R4H, (FP-R104H)_________________
Miniature 4 channel AM receiver
Receiving frequency		:27MHz band 72/75MHz band
Intermediate frequency		:455kHz
Power requirement		:4.8V to 6.0V
Current drain		:10mA
Dimensions		:1.26 x 2.05 x 0.77 in. (32 x 52 x 19.4 mm)
Weight		:1.06 oz (30g)
Receiving range		:	220 yards(200m) on the ground when used
			with the FP-T2PKA(At the best radio wave
			condition of environment)
SERVO PP-S148__________________________
Control system			:+pulse width control
Operating angle			: One side 45° or more
Power requirement			: 4.8V-6V
Current drain (IDLE)			: 6.0V, 8mA (at idle)
Output torque			: 42 oz. in. (3 kg-cm)
Operating speed			: 0.22 sec/60°
Dimensions			: 1.59 x 0.77 x 1.4in. (40.4 x 19.8
			x 36 mm)
Weight			: 1.5 oz. (44.4g)
SERVO FP-S129____________________________
Control system			:+pulse control
Operating angle			:Rotary system, one-side 45" or greater
			(including	trim)
Power requirement		:4.8V to 6.0V (shared with receiver)
Current drain		:6.0V, 8mA		(at idle)
Output torque		:48.7 oz-in		(3.5kg-cm)
Operating speed			:0.25 sec /60"
Dimensions		:1.79 x 0.9 x 1.71 in. (45.5 x 23
Weight			x 43 5 mm)
		:2.1 oz (60g)
SERVO FP-S132H___________________________
Operating system		:+pulse control
Operating angle		:Rotary system, one-side 40" or greater
			(including trim)
Power requirement		:4.8V to 6.0V (shared with receiver)
Current drain		:6.0V, 8mA		(at idle)
Output torque			:25.02 oz-in (1.8kg-cm)
Operating speed			:0.13 sec/60°
Dimensions			:1.46 x 0.71 x 1.20 in. (37 x 18 x 30.5 mm)
Weight			:1.13oz(32g)

TRANSMITTER FP-T2PKA (FP-T2PK)

HANDLING INSTRUCTIONS

The name of each part of the transmitter is shown in Fig. 1 and Fig. 2. Learn them before operating your set.

The servo reversing switches are assumed to be in the normal position in the descriptions in this section. When the servo switches are in the reverse position, operation is the opposite of that described here.

(1)Steering wheel (rudder)

Steering (rudder) operation.

(2)Throttle trigger (throttle lever)

Engine control/motor control operation.

The throttle neutral position can be set to one of three position by turning the 8 throttle neutral adjuster with a coin as shown in Fig. 5. Set it to match the application.

When set to 1		) the full deflection	angle is 40°	Fig. 5
When set to 2		) the throttle throw is 27° and		the
brake	deflection angle is 13°.		brake (reverse)
When set	to 3	) the throttle and

throws are both 20°.

• For engine cars, position 2 is recommended.

•For electric cars, position 3 is recommended when equipped with reverse mechanism and position 2 is recommended when equipped with a brake and forward only

(3)Steering trim

Steering (rudder) trim

(4) Steering rate adjuster

The steering servo steering angle can be freely set as shown in Fig. 6 with a ratcheted adjuster installed which enables you to adjust steering servo travel volume to match a car to the course, even while running.

Neutral

The steering angle can be set within this range. 30%~100%

Steering servo

Fig. 6

(5)Throttle trim knob

(6)Throttle ATV high side trimmer ATV... Adjustable Travel Volume.

(7)Throttle ATV low side trimmer

Throttle ATV is a device which permits independent adjustment of the throttle servo left and right sides (from neutral) as shown in Fig. 7 with trimmers (6) and (7). (FP-T2PKA)

ATV	is	the	abbreviation
for	Adjustable			Throttle		Fig. 7
Volume and is an extreme-
ly convenient device					by
which steering servo travel
volume		can	be	adjusted
freely with			two	trimmers
preloaded.
The	relationship			between
two	trimmers			does	not
change even when servo is
reversed.						Throttle Servo
(6)&(7):only		for	FP-T2PKA.

(8)Throttle neutral adjuster

This adjuster sets the throttle trigger neutral point as described in (2) throttle trigger. Set it to the point at which it stops with a click with a screwdriver, coin, etc.

9Steering (rudder) servo reversing switch

10Throttle servo reversing switch

(11)Wheelangleadjuster

The wheel angle adjuster changes the operating angle of the (1) Steering wheel as shown in Fig. 8.

(12)Wheel tension adjuster

This is a phillips head screw which adjusts the steering force of the steeringwheel.

(13) Power switch

When set in the direction of the A mark (upper position), the switch is turned on and the pointer of the level meter deflects.

(14) Level meter

When the 13) power switch is set to ON, the level meter pointer should deflect to within the silver zone. If the pointer stops near the boundary between the silver and red zones, the battery is low, and the range of the radiowaves will be short. When the level meter pointer drops to the boundary between the silver and red zones, change the battery.

(15)Antenna

95cm antenna. It screws in vertically as shown in Fig. 10.

Remove from the holder and

screw in vertically.

Fig. 10

(16) Battery cover

When loading (or changing) the eight penlight batteries, remove this cover as shown in Fig. 2.

(17) Transmitter crystal

When changing the frequency, replace this crystal. Use the AM crystal set (transmit and receive 1 pair) sold by Futaba. The transmitter crystal is marked TX and the receiver crystal is marked RX. However, you are not allowed to change frequency by merely replacing crystal on both 72 and 75MHz.