1. Introduction
The LDARC X43 is a 1:43 scale mini RC crawler designed for versatile terrain climbing. This hobby-grade remote control car features a durable 4x4 drivetrain, 2.4GHz control system, and a built-in 230mAh LiPo battery, offering up to 80 minutes of runtime. With simulated lighting and a detailed design, it provides an engaging and realistic remote control experience for enthusiasts aged 14 and above.

2. Safety Information
- Age Restriction: Not suitable for children under 36 months due to small parts. Recommended age is 14+ years.
- Battery Safety: Use only the provided charging cable. Do not overcharge or puncture the battery. Discontinue use if the battery becomes damaged or swollen.
- Operating Environment: Operate the RC crawler in open areas, away from people, pets, and obstacles. Avoid operating near water or in wet conditions to prevent damage to electronics.
- Supervision: Adult supervision is recommended, especially for younger users, to ensure safe operation and prevent accidents.
- Heat: Motors and batteries can become hot during use. Allow components to cool down before handling or recharging.
3. Package Contents
The LDARC X43 is available in two versions: RTR (Ready-To-Run) and BNR (Bind-N-Run). Please check your package contents against the list below.

RTR (Ready-To-Run) Version:
- 1x X43 Car (colors optional)
- 1x Transmitter (CT01)
- 1x White shell (for DIY customization)
- 1x Charging cable (USB)
- 1x Screwdriver
- 1x Nut Sleeve
- 4x M1.6 nut
- 1x Manual
- 1x Car sticker
- 1x Brand sticker
BNR (Bind-N-Run) Version:
- 1x X43 Car (colors optional)
- 1x Screwdriver
- 1x Nut Sleeve
- 4x M1.6 nut
- 1x Manual
- 1x Car sticker
- 1x Brand sticker
4. Specifications

| Feature | Specification |
|---|---|
| Scale | 1:43 |
| Model Number | X43 |
| Dimensions (L*W*H) | 100*52.8*53mm |
| Weight | 93g |
| Wheelbase | 56mm |
| Min Ground Clearance | 5.75mm |
| Car Battery | 3.7V 230mAh LiPo (Built-in) |
| Flight Time (Runtime) | Up to 80 minutes |
| Charging Voltage | 3.7V (USB-C) |
| Motor | 716 Motor |
| Throttle Servo | S17E Servo |
| Tire Diameter | 21.5mm |
| Gear Ratio | 1:375 |
| Material | Electronics, Metal, Plastic, Rubber |
| Transmitter Model | CT01 |
| Control Channels | 8 CHANNELS |
| Controller Mode | MODE2 |
| Remote Distance | 50m |
| RF Protocol | Q2 |
| Transmitter Screen | 128*64 LCD |
| Certification | CE |
5. Setup
5.1. Charging the Car Battery
- Locate the USB-C charging port on the rear of the X43 RC Crawler.
- Connect the provided USB charging cable to the car and to a suitable USB power source (e.g., computer, USB wall adapter).
- The charging indicator on the car (or cable, if applicable) will show charging status. Ensure the battery is fully charged before first use (approximately 80 minutes runtime per charge).

5.2. Transmitter (CT01) Setup (RTR Version)
- Ensure the transmitter has sufficient power. The CT01 transmitter has a built-in 18650 battery and supports USB charging.
- The transmitter is pre-bound to the car in the RTR version. If re-binding is necessary, refer to the specific instructions in the included manual.
- Familiarize yourself with the transmitter controls as shown in the diagram below.

5.3. Installing the Car Shell
The RTR version includes a white shell for DIY customization. Carefully attach the shell to the chassis using the provided M1.6 nuts and screwdriver. Ensure all connections are secure.

6. Operating Instructions
6.1. Basic Controls
- Power On: Turn on the transmitter first, then the car.
- Throttle: Use the trigger on the transmitter to control forward and reverse movement.
- Steering: Use the steering wheel on the transmitter to control left and right turns.
- Lights: The X43 features simulated lighting including high/low beams, turn signals, brake/reverse lights, and dual flashing lights. Use the designated buttons on the transmitter (refer to CT01 diagram) to control these functions.
- Trims: Use the TH Trim (Throttle Trim) and ST Trim (Steering Trim) buttons to fine-tune the car's straight-line performance and neutral throttle position.
- Speed/Direction Angle: Adjust the speed and steering sensitivity using the corresponding switches on the transmitter.
- Emergency Flashers: Activate emergency flashers via the dedicated button on the transmitter.

6.2. Driving Tips
- The X43 is a 4x4 crawler with a full proportional control system, allowing for precise movements over challenging terrain.
- Practice in a clear area to get accustomed to the controls before attempting complex obstacles.
- Utilize the low-speed control for technical crawling and the higher speeds for traversing easier sections.

6.3. Application Scenarios

7. Maintenance
- Cleaning: After each use, especially in dusty or dirty conditions, gently clean the car with a soft brush or cloth. Avoid using water directly on electronic components.
- Battery Care: Store the battery in a cool, dry place. Do not store fully charged or completely depleted for extended periods. Charge the battery to approximately 50% for long-term storage.
- Gear and Bearings: The X43 features metal gears and 10pcs bearings for durability. Periodically inspect for wear and tear. Lubricate moving parts with appropriate RC lubricant if necessary.
- Servo: The S17E servo provides accurate steering. Ensure it moves freely and is not obstructed.
- Tires: Check tires for damage or excessive wear. Ensure they are securely attached to the metal wheel hubs.
- General Inspection: Regularly check all screws and connections to ensure they are tight.

8. Troubleshooting
- Car Not Moving / Lights Flashing: This indicates a low battery voltage status. The front and rear headlights will flash rapidly, and the car will not move. Recharge the car battery immediately.
- Loss of Control / Intermittent Response: Check the transmitter's battery level. The CT01 transmitter provides real-time voltage display and a low voltage alarm. Ensure you are within the 50m remote distance. Check for strong interference sources in the operating area.
- Poor Climbing Performance: Ensure the battery is fully charged. Inspect tires for debris or damage. Check for any obstructions in the drivetrain or suspension.
- Unresponsive Controls: Ensure both the car and transmitter are powered on and properly linked. If using a BNR version, ensure it is correctly bound to your transmitter.
9. User Tips
- DIY Customization: The RTR version comes with a white shell, offering a great opportunity for personalized paint jobs and modifications.
- Indoor Fun: Due to its mini scale, the X43 is perfect for indoor crawling courses. Create your own obstacles using household items or consider purchasing dedicated 1:43 scale climbing scene sets.
- Transmitter Settings: Experiment with the TH Trim and ST Trim settings on your CT01 transmitter to optimize the car's handling to your preference.
- Battery Management: To maximize battery life, avoid completely draining the battery frequently. Charge it when the low voltage alarm activates.

10. Warranty and Support
For specific warranty information and customer support, please refer to the documentation provided by your seller or contact the LDARC customer service directly. The product is CE certified, indicating compliance with European safety standards.