Redcat Racing VOLCANOEP-94111-RB-24
Redcat Racing Volcano EPX 1/10 Scale Electric RC Monster Truck Instruction Manual
Brand: Redcat Racing | Model: VOLCANOEP-94111-RB-24
Introduction
The Redcat Racing Volcano EPX is a 1/10 scale electric four-wheel drive monster truck designed for off-road enthusiasts. This ready-to-run vehicle features a 19T brushed 550 motor, forward/reverse transmission, high-torque steering servo, and waterproof electronics. It is equipped with a durable polycarbonate body, aggressive off-road tires, and aluminum-capped oil-filled shocks for robust performance across various terrains.

Figure 1: Redcat Racing Volcano EPX Monster Truck, showcasing its robust design and off-road tires.
What's in the Box
- Volcano EPX 1/10 Scale Electric Monster Truck (Red)
- 7.2V 2000mAh NiMH Battery
- Battery Charger
- 2.4GHz Radio System
- Instruction Manual
Note: 4 AA batteries are required for the transmitter (not included).
Setup
1. Charging the Battery
Before first use, fully charge the included 7.2V 2000mAh NiMH battery using the provided charger. Refer to the charger's specific instructions for charging times and safety precautions. Ensure the battery is placed on a non-flammable surface during charging and never leave it unattended.
2. Installing Transmitter Batteries
Install 4 AA batteries into the 2.4GHz radio transmitter. Ensure correct polarity as indicated inside the battery compartment.
3. Initial Vehicle Inspection
Before operating, perform a quick inspection:
- Gear Mesh: Verify the motor's pinion gear and the spur gear have proper meshing. Incorrect meshing can lead to stripped gears or motor/ESC overheating.
- Wheel Nuts: Ensure all wheel nuts are securely tightened.
- Suspension: Check that all eight aluminum oil-filled shocks move freely and are not bent or damaged.
- Steering: Confirm the steering servo operates smoothly and the steering linkages are intact.

Figure 2: Chassis view of the Volcano EPX, showing internal components and suspension.
Operating Instructions
1. Powering On
First, turn on the transmitter. Then, connect the fully charged battery to the vehicle's Electronic Speed Controller (ESC) and turn on the vehicle's power switch. The ESC will typically emit a series of beeps to indicate successful connection.
2. Driving the Vehicle
The 2.4GHz radio system provides proportional control for steering and throttle. Use the steering wheel on the transmitter to control direction and the trigger for forward/reverse movement. The Volcano EPX is designed for various terrains including dirt, grass, gravel, trails, and backyards, thanks to its 4WD shaft-driven power and oversized aggressive tires.
Video 1: Official Redcat Racing Volcano EPX in action, demonstrating its performance on various terrains.
3. Waterproof Electronics
The Volcano EPX features waterproof electronics (ESC, servo, and receiver), allowing operation in wet conditions like rain, puddles, or mud. However, avoid submerging the vehicle completely or operating in deep water to prevent damage to non-waterproof components.
Maintenance
1. Post-Run Cleaning
After each use, especially in dirty or wet conditions, clean the vehicle to remove dirt, debris, and moisture. Use a soft brush or compressed air for dry debris and a damp cloth for wet areas. Ensure all electronics are dry before storing.
2. Suspension and Drivetrain Check
Regularly inspect the steel dogbone axles, tough molded chassis, and ball bearings for wear or damage. The eight aluminum oil-filled shocks are designed to absorb impacts, but check them for leaks or bends. The suspension is fully adjustable, allowing for fine-tuning of camber, toe angle, and ride height.

Figure 3: Detailed view of the front suspension components, including shocks and steering linkages.
3. Motor and ESC Care
Monitor the temperature of the 19T brushed 550 motor and ESC during operation. Excessive heat can reduce component lifespan. Ensure proper ventilation and avoid continuous high-stress operation. If upgrading to LiPo batteries, ensure the ESC is set to LiPo mode to enable low voltage cutoff, protecting the battery from over-discharge.
Troubleshooting
- No Power/Intermittent Power: Check battery charge, connections, and ensure the transmitter and vehicle are powered on in the correct sequence.
- Steering Issues: If the steering is unresponsive or inconsistent, inspect the steering servo and linkages for damage or loose connections. A broken servo saver can cause steering problems and may require replacement.
- Reduced Performance/Short Run Time: The included NiMH battery may offer shorter run times. Consider upgrading to a higher capacity NiMH or a compatible LiPo battery for extended performance. Ensure the battery is fully charged.
- Broken Parts: The vehicle is durable, but aggressive driving can lead to component breakage (e.g., suspension arms, bumpers). Replacement parts are widely available.
Specifications
| Product Dimensions | 27 x 14 x 9 inches |
| Item Weight | 8.18 pounds |
| Item Model Number | VOLCANOEP-94111-RB-24 |
| Recommended Age | 14 years and up |
| Batteries | 1 Lithium Ion battery required (included for vehicle), 4 AA batteries for transmitter (not included) |
| Manufacturer | Redcat Racing |
Warranty and Support
For warranty information, technical support, or replacement parts, please contact Redcat Racing directly. Refer to the official Redcat Racing website or the included product documentation for contact details and specific warranty terms.
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