FMS 1:24 FCX24 MAX SMASHER Instruction Manual

Introduction

Thank you for purchasing the FMS 1:24 FCX24 MAX SMASHER RC monster truck. This manual provides comprehensive guidance on operating, maintaining, and repairing your vehicle. Please retain this manual for future reference, as many components are unique to this product.

Important Safety Information: This product is composed of precision-made components and is not a toy. It is recommended for ages 14 and up. Adult supervision is required for users under 14 years of age. The product contains small parts and should be kept out of reach of children aged 3 years and younger.

Failure to operate or maintain this product safely can result in bodily harm. The operator is solely responsible for safe operation. FMS and its distributors are not liable for any bodily harm or property damage resulting from the use of this product.

Safety Precautions, Warnings, and Guidelines

General Safety Precautions

• Replace damaged components only with original factory parts.
• Pay close attention to the polarity of all vehicle wiring.
• Use common sense when selecting an operating environment. Avoid areas near power cables, cellular/radio towers, water bodies, or unstable terrain. The operator is responsible for their actions.
• The product contains precision electrical components; keep it away from moisture and contaminants.
• Always check the vehicle's radio range before operation to prevent signal loss or interference.
• Operate the product within your capabilities. Do not take risks to retrieve a dangerous vehicle.
• Transmitter and Receiver Power Sequence: Always turn on the transmitter before connecting the battery to the model. When powering off, always disconnect the battery from the model first, and then turn off the transmitter. Reversing this order can lead to loss of control and serious damage.
• Never let transmitter batteries run low, as this can cause loss of vehicle control.
• Plastic parts are susceptible to damage from extreme heat or cold. Store the model indoors in a climate-controlled environment, away from heat sources like ovens or heaters.

Prohibited Actions

• Do not operate the product at night or in bad weather (rain, thunderstorm), as this can cause erratic operation or loss of control.
• Do not operate when visibility is limited.
• Do not operate in rain or snow. Moisture can cause erratic operation or loss of control.
• Avoid operating near sources of radio interference, such as other radio control activities, power lines, communication broadcasting antennas, crowded areas, roads, or bodies of water with passenger boats.
• Do not operate if you are tired, uncomfortable, or under the influence of alcohol or drugs, as this can cause serious injury.
• The 2.4GHz radio band requires a clear line of sight. Keep the model in sight at all times, as large objects can block the RF signal and lead to loss of control.

Mandatory Actions

• Read this manual thoroughly and follow all instructions to ensure safety and prevent injury or death.
• Ensure the product is properly installed in your model; improper installation can lead to serious injury.
• Always disconnect the receiver battery before turning off the transmitter to prevent unintended operation.
• Verify that all servos operate in the correct direction. Adjust if necessary.
• Keep the model within the system's maximum operating range to prevent loss of control.

Product Introduction

Background

The "Bigfoot" style of racing originated in North America in the 1980s, evolving from popular pick-up off-road mud racing. Initially an activity for car enthusiasts, it emphasized off-road driving and dragging. The need for chassis heightening and large-diameter tires became apparent for navigating muddy terrain. The spectacle of high mud splashes and the "violent aesthetic" led to heavily modified vehicles resembling monster trucks with huge tires.

Modern Bigfoot races are often held indoors and include racing, two-wheel tricks, and freestyle performances. The large tires provide exceptional passability, and with sufficient power, vehicles can perform jumps and even somersaults, offering a spectacular display.

About the Model: FMS 1:24 FCX24 MAX SMASHER

The FMS 1:24 MAX SMASHER utilizes the FCX24 chassis. It features large, hollow tires for excellent shock absorption. The two-speed gearbox, controlled via the third channel, delivers strong torque and supports high-speed off-road driving. Planetary gear differentials are standard on the front and rear axles, enhancing high-speed performance, posture simulation, and cornering. Straight axle parts are included for users who wish to replace the differentials, which will enhance climbing ability but reduce differential function. A hybrid setup (straight axle rear, differential front) is also an option.

A key feature is the portal axle, which, combined with the large tires, increases ground clearance and overall passability. Powered by a 130 brushed motor, the vehicle can perform dynamic maneuvers like "head raising" and "tail tilting." The body design replicates a first-generation American pickup truck, complete with detailed stickers and electroplated parts, evoking the spirit of that era.

Features

• Ready to run model
• Two-speed transmission (controlled by the third channel)
• Front and rear axle planetary gear differentials
• Full set of ball bearings
• Remote control lighting system
• Portal axle
• Metal gears steering servo
• Four-link suspension
• High-strength integrated nylon frame
• Rapid separation car body
• Painted body
• Original personalized stickers
• Plated scaled details
• 2.4GHz radio control

Specifications

Transmitter (FMS-G3)

• Product Model: FMS-G3
• Compatible Receivers: FMS-R3A
• Compatible Models: 1:18, 1:24 simulation cars or climbing cars
• Number of Channels: 3
• RF: 2.4GHz ISM
• Maximum Power: < 20dBm (e.i.r.p.) (EU)
• 2.4G Protocol: AFHDS 2A-BS
• Distance: >100m (Ground distance without interference)
• Resolution: 1024
• Input Power: 6V DC or 4x AAA batteries
• Working Current: 10mA (Static); 120mA/6V (Dynamic)
• Charging Port: No
• Low Voltage Alarm: < 4.2V
• Antenna: Built-in single antenna
• Temperature Range: -10°C to +60°C
• Humidity Range: 20% to 95%
• Online Update: No
• Color: Blue
• Dimensions: 115.2*75.5*145mm
• Weight: Approx. 113g
• Certification: CE, FCC ID: 2A2UNR3A00

Receiver (FMS-R3A)

• Product Model: FMS-R3A
• Compatible Transmitters: FMS-G3
• Compatible Models: 1:18, 1:24 simulation cars or climbing cars
• Applicable Motors: 180 brushed motor
• PWM Channels: 2
• Number of Lights: 1
• RF: 2.4GHz ISM
• 2.4GHz Protocol: AFHDS 2A-BS
• Input Power: 2S Lithium batteries
• Continuous / Peak Current: 10A/40A
• BEC Output: 5V/1A
• Maximum Power: < 20dBm (e.i.r.p.) (EU)
• Distance: >100m (Ground distance without interference)
• Antenna: External antenna
• Data Output: PWM
• Resolution: 1024
• Temperature Range: -10°C to +60°C
• Humidity Range: 20% to 95%
• Online Update: No
• Dimensions: 32*24.4*12mm
• Weight: 8g
• WaterProof: PPX4
• Certification: CE, FCC ID: 2A2UNR3A00

Vehicle Dimensions

• Length: 227mm
• Width: 156mm
• Height: 127mm
• Wheelbase: 139mm
• Tire F/R: Φ 68 × 34mm
• Minimum Ground Clearance: 44mm
• Reduction ratio: (High Gears) 24.75, (Low Gears) 99

Key Components

• Motor: 130 Brushed motor
• Battery: 2S LiPo 7.4V 380mAh x1
• Remote control distance: 30m
• Approx. operating duration time: 20mins
• Remote control: G3+ R3A transmitter, receiver with ESC group control board
• Key functions: Two Speed Transmission / Smart light effect / Front and rear axle planetary gear differentials

Transmitter and Receiver Operation

Transmitter Overview

The transmitter utilizes a 2.4GHz AFHDS 2A-BS Automatic Frequency Hopping Digital System, comprising the FMS-G3 transmitter and FMS-R3A receiver. It supports two-way transmission and features 3 channels, compatible with various car models.

Transmitter Controls:

• [1] Steering Wheel (CH1): Controls the vehicle's left/right steering.
• [2] Throttle Trigger (CH2): Controls forward/backward movement.
• [3] Three-position Switch (CH3): Selects speed positions (fast/medium/slow) for the model car.
• [4] Lanyard Eye: For attaching a lanyard.
• [5] Handle: Houses AAA batteries.
• [6] LED Indicator: Shows transmitter status.
• [7] BIND Button: Used for binding, turning car lights on/off, or resetting data.
• [8] ST- Button: Decreases CH1 trim and travel value.
• [9] TH- Button: Decreases CH2 trim and travel value.
• [10] Power Switch: Turns the transmitter on/off.
• [11] REV Button: Reverses the direction of CH1 or CH2.
• [12] ST+ Button: Increases CH1 trim and travel value.
• [13] TH+ Button: Increases CH2 trim and travel value.

Receiver Overview

The receiver (FMS-R3A) connects to the model's components.

• [1] Motor Interface: Connects to the motor.
• [2] Battery Lines: For connecting the battery (Molex 51005 Female Interface).
• [3] Power Switch: Power control for the receiver.
• [4] Antenna: External antenna for signal reception.
• [5] LED Indicator: Shows receiver status.
• [6] CH3 Port: For channel 3 connection.
• [7] CH1 Port: For channel 1 connection.
• [8] Car Light Port: For connecting car lights.

Receiver LED Status Indicators:

• Off: Receiver not powered on.
• Light on in red: Receiver connected and working normally.
• Fast flashing: Receiver is in bind mode.
• Slow flashing: Transmitter is off, unbound, or no signal.

Interface Details:

All servo and car light interfaces use 1.25mm standard pins. The motor interface is a PH2.0 female interface.

Antenna Placement:

The antenna is external. Caution: Do not pull or tie the antenna with servo cables. Note: Keep the antenna at least 1cm away from conductive materials (like carbon fiber or metal) to maintain signal strength.

Getting Started

Transmitter Antenna

The transmitter has a built-in antenna that operates automatically when powered on.

Receiver and Servo Installation

Ensure the receiver is mounted in an appropriate location for a stable signal. Pay attention to the following:

• Install the receiver away from ESCs or other sources of electrical noise.
• Keep the receiver's antenna at least 1cm away from conductive materials (carbon, metal) for optimal performance.

Installing Transmitter Battery

Use only specified AAA batteries (4 required). Ensure correct polarity when inserting batteries. A low battery alarm will sound when voltage drops below 4.2V.

Battery Precautions:

• Never charge LiPo batteries with chargers designed for NiCd, NiMH, or other chemistries. Use only LiPo-specific chargers.
• Never leave LiPo batteries unattended during charging.
• Do not overcharge batteries.
• Charge LiPo batteries on non-flammable, heat-resistant surfaces, preferably in a LiPo-safe bag.
• Do not allow LiPo cells to overheat (cells exceeding 60°C/140°F can be damaged or catch fire).
• Never charge or store battery packs in a vehicle.
• Do not discharge LiPo batteries, as this can cause damage.
• Keep LiPo cells away from water or moisture.
• Store batteries away from open flames or heaters.
• Do not mix LiPo cells or packs with other types.
• Store LiPo batteries securely, away from children.
• Remove the LiPo battery immediately if the model is involved in a crash.
• Carefully inspect batteries and connectors for any damage.
• Cells may become hot after use; allow them to cool to room temperature before recharging.
• Avoid electrolyte contact with eyes or skin; wash immediately if contact occurs.
• Do not alter or modify battery connectors or wires.
• Always inspect battery condition before charging or operating.
• Do not short-circuit the LiPo battery.
• Do not have contact with a leaky/damaged battery directly.
• Charge batteries within the recommended temperature range (0°C - 45°C).

Operation Guide

Power-on Procedure

1. Ensure batteries are fully charged and correctly installed in the transmitter.
2. Toggle the transmitter's Power Switch to the [ON] position; the LED should illuminate steadily.
3. Connect power to the receiver.

Note: For safety, always power on the transmitter before powering the receiver.

Transmitter LED Status

• Off: Transmitter not powered on.
• Fast flashing: Transmitter in bind mode.
• Slow flashing: Low voltage alarm.
• Gradual (breathing): Transmitter in Sleep mode or Idle alarm state.
• Three flashes, one off: Transmitter in standby, but receiver is off, unbound, or has lost signal.

Binding

The transmitter and receiver are factory-bound. If replacement or additional receivers are needed:

1. Turn on the transmitter while holding the BIND button. The LED will flash quickly. Release the BIND button.
2. Power on the receiver. It will enter binding state if no connection is detected within 1 second.
3. The receiver's LED will become solid, indicating successful binding.
4. Verify functions. Repeat binding if necessary.

Note: If binding is not completed within ten seconds, the receiver LED will enter slow flashing state.

Stick Calibration

This function calibrates the neutral position for the throttle trigger and steering wheel. If recalibration is needed:

1. Turn the steering wheel clockwise to its maximum travel point and push the throttle trigger forward to its maximum. Turn on the transmitter (enter calibration mode). A short beep will sound periodically.
2. Turn the steering wheel to its maximum and minimum travel points (clockwise and counterclockwise). Push/pull the throttle trigger forward and backward to its maximum extent. The wheel and trigger will return to neutral. Press the BIND key to save and exit.

Successful calibration will exit calibration mode upon pressing BIND, indicated by a short beep. The transmitter enters standby mode (LED: three flashes, one off). Calibration failure means the BIND button will not exit the mode.

Power Off Procedure

1. Disconnect the receiver power.
2. Toggle the transmitter's Power Switch to the [OFF] position.

Danger: Always disconnect receiver power before turning off the transmitter to prevent damage or injury.

System Functions

Channel Description

The transmitter supports 3 channels:

• CH1 (Steering Wheel): Controls the vehicle's left/right steering.
• CH2 (Throttle Trigger): Controls forward/backward movement.
• CH3 (Three-position Switch): Selects speed positions (fast/medium/slow) for the model car.

Channel Reverse

Reverses the output direction of a channel:

• For CH1: With the steering wheel at max or min travel, press the REV button. Pressing once reverses the direction.
• For CH2: With the throttle trigger at max or min travel and the steering wheel at neutral, press the REV button. Pressing once reverses the direction. A short beep indicates the action.

Note: Be cautious with throttle channel reverse; the model may move at full speed.

Trim Setting

Adjusts the neutral position (trim) of a channel:

• For CH1: With the steering wheel at neutral, use ST+/- buttons to adjust trim.
• For CH2: With the throttle trigger at neutral, use TH+/- buttons to adjust trim.

ST+/TH+ increases trim; ST-/TH- decreases trim. Range: -150µs to +150µs (5µs steps). A short beep confirms trim adjustment. Holding the button allows continuous adjustment. Two beeps occur when crossing neutral; a long beep at the endpoint.

D/R (Dual Rate) Setting

Adjusts the travel range (steering/throttle sensitivity) of a channel:

• For CH1: With the steering wheel at max or min travel, use ST+/- buttons to adjust travel value.
• For CH2: With the throttle trigger at max or min travel, use TH+/- buttons to adjust travel value.

ST+/TH+ increases travel; ST-/TH- decreases travel. Range: 0-120% (default 100%, 5% steps). A short beep confirms adjustment. Holding the button allows continuous adjustment. A long beep sounds at the endpoint.

Failsafe Setting

Protects the model and personnel during loss of control. In failsafe, CH2 defaults to brake mode. The receiver normally holds the last channel value. To set failsafe: press and hold the BIND button for 3 seconds during normal operation. The current channel value becomes the failsafe value, confirmed by a long beep. Failsafe settings reset to default upon re-binding.

Reset Data

Resets transmitter parameters to default values. Press and hold BIND and REV keys, then turn the POWER key to [ON]. A long beep confirms the reset. Failsafe, binding, and stick calibration are not reset.

Idle Alarm

The transmitter enters idle alarm state after 10 minutes of inactivity. The LED will show a gradual light, and the buzzer will beep twice periodically. Any control input cancels the alarm.

Sleep Mode

After 2 minutes in idle alarm state, the transmitter enters sleep mode. The LED shows gradual light, buzzer and RF are off. The transmitter enters low-power mode and becomes unresponsive. To exit, power off and restart the transmitter.

Low Voltage Alarm

When transmitter voltage drops below 4.2V, a low voltage alarm activates. The LED shows gradual status, and the buzzer sounds briefly. For safety, RF is turned off when battery voltage is below 3.5V.

Offline Prompt

If the transmitter detects the bound receiver has turned off or disconnected for over 2 seconds, the transmitter LED will flash three times and turn off. The prompt state exits when the receiver information is received again.

FMS-R3A Receiver Instructions

Attentions

• Ensure proper installation and calibration to prevent serious injury.
• Disconnect the receiver battery before turning off the transmitter to avoid loss of control. Unreasonable failsafe settings can cause accidents.
• Mount the receiver away from motors, ESCs, or other sources of excessive electrical noise.
• Keep the receiver's antenna at least 1cm away from conductive materials.
• Do not power on the receiver during setup to prevent loss of control.

Protect Function

The receiver has low voltage and overheating protection:

• Low Voltage Protection: If receiver voltage drops below 6.4V, all channels lose output.
• Overheating Protection: If the receiver overheats, CH2 (motor) output stops, while CH1 remains normal. Output resumes when the temperature returns to normal.

Car Light Control

When the receiver and transmitter are connected, press the BIND button to turn the car light on or off. The default state is off.

Failsafe

The receiver supports failsafe, which is configured on the transmitter side. Refer to the "Failsafe Setting" section for details.

G3 Specifications

Transmitter Specifications (FMS-G3)

• Product Model: FMS-G3
• Compatible Receivers: FMS-R3A
• Compatible Models: 1:18, 1:24 simulation cars or climbing cars
• Number of Channels: 3
• RF: 2.4GHz ISM
• Maximum Power: < 20dBm (e.i.r.p.) (EU)
• 2.4G Protocol: AFHDS 2A-BS
• Distance: >100m (Ground distance without interference)
• Resolution: 1024
• Input Power: 6V DC or 4x AAA batteries
• Working Current: 10mA (Static); 120mA/6V (Dynamic)
• Charging Port: No
• Low Voltage Alarm: < 4.2V
• Antenna: Built-in single antenna
• Data Port: No
• Temperature Range: -10°C to +60°C
• Humidity Range: 20% to 95%
• Online Update: No
• Color: Blue
• Dimensions: 115.2*75.5*145mm
• Weight: Approx. 113g
• Certification: CE, FCC ID: 2A2UNR3A00

Receiver Specifications (FMS-R3A)

• Product Model: FMS-R3A
• Compatible Transmitters: FMS-G3
• Compatible Models: 1:18, 1:24 simulation cars or climbing cars
• Applicable Motors: 180 brushed motor
• PWM Channels: 2
• Number of Lights: 1
• RF: 2.4GHz ISM
• 2.4GHz Protocol: AFHDS 2A-BS
• Input Power: 2S Lithium batteries
• Continuous / Peak Current: 10A/40A
• BEC Output: 5V/1A
• Maximum Power: < 20dBm (e.i.r.p.) (EU)
• Distance: >100m (Ground distance without interference)
• Antenna: External antenna
• Data Output: PWM
• Resolution: 1024
• Temperature Range: -10°C to +60°C
• Humidity Range: 20% to 95%
• Online Update: No
• Dimensions: 32*24.4*12mm
• Weight: 8g
• WaterProof: PPX4
• Certification: CE, FCC ID: 2A2UNR3A00

Vehicle Setup

Connecting the Battery

Step 1: Separate the car shell by opening the front and rear buckles inward.

Step 2: Place the battery in the battery compartment on the frame and secure it with the provided rubber band.

Step 3: Connect the battery plug.

Note:

• If not in use for a long time, unplug and remove the battery to prevent leakage.
• Do not open, disassemble, or attempt to repair the battery.
• Disconnect the battery from the vehicle before charging.
• Do not charge the battery while it is inside the vehicle.

Spare Parts List

The following is a list of spare parts for the FMS 1:24 FCX24 MAX SMASHER:

Decal Application

This section provides visual guides for applying decals to the FMS 1:24 FCX24 MAX SMASHER. Refer to the diagrams for specific placement of various stickers, including body graphics, logos, and detailing elements.

Manufacturer Information

Foshan Zhengze Model Technology Co., Ltd.

• Tel: +86-0757-26330080
• E-mail: support@fmsmodel.com
• Address: Unit A, Building 6, Jicheng Science and Technology Innovation Park, Shunde, Foshan City, Guangdong Province, 528306, China.