Do you have a question about the Traxxas BRONCO Scale and Trail TRX4 and is the answer not in the manual?
Key points for safe operation, avoiding damage, and responsible use of the model.
Precautions for the electronic speed control (ESC) to prevent damage and ensure safe operation.
Critical warnings and precautions for users of Lithium Polymer (LiPo) batteries.
Precautions for charging and handling all battery types safely.
This document is an owner's manual for the Traxxas TRX-4 2021 Ford Bronco, a scale and trail crawler radio-controlled (R/C) model. The manual provides comprehensive instructions for operating, maintaining, and tuning the model, emphasizing safety and optimal performance.
The Traxxas TRX-4 2021 Ford Bronco is a high-performance R/C crawler designed for off-road enthusiasts. It replicates the iconic Ford Bronco with detailed realism, including a molded Bronco-emblazoned grille, door handles, side mirrors, and cowl panel. The model features a quick-release body system for easy access to internal components. Powering the TRX-4 is a Titan® 21T 550 motor, coupled with waterproof electronics and a smooth XL-5 HV 3s LiPo-capable electronic speed control (ESC). Its game-changing portal axles provide superior ground clearance, while a rigid steel frame ensures durability and eliminates chassis flex, allowing the model to navigate challenging terrain. The Canyon Trail 1.9 tires, equipped with tuned foam inserts, offer excellent grip on rocky surfaces. The model is built for rugged use, powerful performance, and all-day driving fun in remote locations.
The manual outlines a "Quick Start" path for new users, guiding them through essential procedures to get the model running quickly. This includes reading safety precautions, installing batteries in the transmitter, charging and installing the battery pack in the model, and properly turning on the radio system. Users are advised to check servo operation and perform a range test of the radio system to ensure everything is functioning correctly before driving. The model's radio system, the Traxxas TQi, is detailed, covering its installation, operation, and advanced tuning capabilities. The manual also provides instructions for adjusting the electronic speed control, including changing its modes (Sport, Race, Training, Trail, and Crawl) to suit different driving styles and conditions. Low-Voltage Detection is a crucial feature for LiPo battery users, alerting the driver when the battery reaches its minimum safe discharge voltage.
Driving the model involves understanding its capabilities and making necessary adjustments. The manual offers tips for driving, including throttle control, steering, and navigating various terrains. It also covers tuning adjustments, such as suspension settings, gear ratios, and differential lock operation, to optimize performance for specific crawling challenges. The TRX-4 features a two-speed transmission and remote locking differentials, which can be controlled via the transmitter to enhance traction and maneuverability on diverse surfaces. The quick-release body system allows for easy removal and installation of the body, simplifying maintenance and battery changes. The model is designed for a Skill Level 1, meaning no previous experience with R/C models is required, though setup, maintenance, or support equipment may be needed.
Maintaining the TRX-4 is crucial for its longevity and performance. The manual dedicates a section to maintenance, covering critical steps to keep the model in excellent running condition. This includes regular cleaning, inspection of components for wear or damage, and proper storage. Users are instructed on how to care for the battery packs, emphasizing safe charging, discharging, and storage practices, especially for LiPo batteries. The manual warns against common mistakes that could damage the ESC, such as improper wiring or using incompatible components. It also provides guidance on recycling Power Cell NiMH batteries.
The manual highlights the importance of disconnecting the battery from the speed control when not in use and insulating exposed wiring to prevent short circuits. It advises against operating the model in cluttered spaces or leaving the charger and battery unattended during charging. Users are encouraged to inspect LiPo batteries carefully before charging for any signs of damage or irregularity. The manual also provides contact information for Traxxas Technical Support, including a toll-free line, email, and website, ensuring users have access to assistance for any service needs, maintenance questions, or replacement parts. Traxxas offers a full-service, on-site repair facility and encourages purchasing replacement parts from local dealers or directly from Traxxas to save time and costs. The document also includes a list of recommended equipment for an R/C toolbox, such as safety glasses, tire glue, a hobby knife, side cutters, a Phillips screwdriver, and a soldering iron, to facilitate maintenance and repairs.
| Scale | 1/10 |
|---|---|
| Drive Type | 4WD |
| Motor Type | Brushed |
| Radio System | TQi 2.4GHz |
| Shock Length | 90 mm |
| Speed Control | XL-5 HV |
| Gear Pitch | 32P |
| Suspension | 4-link |
| Waterproof | Yes |
| Chassis | Steel ladder frame |
| Wheelbase | 12.3 in (313 mm) |
| Battery Type | 7-cell NiMH or 2S LiPo |
| Wheels | 1.9 in (48 mm) |
| Tires | 1.9 in (48 mm) |
| Motor | Titan 21T 550 |
| Transmission | 2-Speed |
| Differential Type | Locking |
| Chassis Structure/Material | Steel ladder frame |
| Brakes | Electronic |
| Servo | 2075X |
| Differential | Locking |











