1. Introduction
Thank you for purchasing the ARRMA Typhon GROM 4x4 Smart Small Scale Buggy RTR. This remote-controlled vehicle is designed for high-speed action and durability across various terrains. This manual provides essential information for the safe operation, setup, maintenance, and troubleshooting of your new RC buggy. Please read this entire manual carefully before operating the vehicle to ensure proper function and to prevent damage or injury.
2. Safety Information
Operating this sophisticated hobby product requires caution, common sense, and basic mechanical ability. Failure to operate this product in a safe and responsible manner could result in injury or damage to the product or other property. This product is not intended for use by children without adult supervision. Do not use with incompatible components or alter this product in any way outside of the instructions provided by ARRMA.
- Read the entire instruction manual to become familiar with the features of the product before operating.
- Always operate the vehicle in open areas, away from people, pets, and obstacles.
- Ensure all components are securely fastened before each use.
- Keep hands, face, and loose clothing away from moving parts.
- Do not operate the vehicle in wet conditions unless specifically designed for it (this model features waterproof electronics).
- Always disconnect the battery when not in use and during maintenance.
- Store the vehicle and its components in a cool, dry place.
3. What's in the Box
Your ARRMA Typhon GROM 4x4 Buggy RTR package includes the following components:
- 1x ARRMA TYPHON GROM Small Scale 4X4 Buggy RTR
- 1x Spektrum Waterproof SLT 2-in-1 25A ESC & Receiver
- 1x ARRMA MEGA 380 28T Brushed Motor
- 1x Remote Control (Transmitter)
- 1x Spektrum SX110 Waterproof Metal-Geared Servo
- 1x Battery (Spektrum 2S LiPo)
- 1x Charger (Spektrum Smart Charger)
- 1x Hex Wrench
- Product Manual (this document)
4. Setup
4.1. Charging the Battery
Your ARRMA Typhon GROM includes a Spektrum 2S LiPo battery and a compatible Spektrum Smart Charger. Always charge the battery fully before first use and after each operation.
- Connect the Spektrum Smart Charger to a suitable USB power supply (not included, requires QC 2.0/3.0 18W+).
- Connect the battery to the charger. Ensure the connectors are properly aligned and fully inserted.
- The charger's LED indicator will show the charging status. Refer to the charger's specific manual for LED indications.
- Once charging is complete, disconnect the battery from the charger.
4.2. Installing the Vehicle Battery
The Typhon GROM features a convenient clipless body design for easy access to internal components.
- Gently remove the clipless body from the chassis.
- Locate the battery compartment.
- Insert the fully charged Spektrum 2S LiPo battery into the compartment.
- Connect the battery to the ESC (Electronic Speed Controller). Ensure the polarity is correct.
- Reattach the clipless body, ensuring it snaps securely into place.
4.3. Transmitter Setup
The included remote control (transmitter) is pre-bound to your vehicle. Ensure the transmitter has fresh batteries installed (not included, typically AA batteries).
- Install the required batteries into the transmitter.
- Turn on the transmitter first, then the vehicle.
- Observe the LED indicators on both the transmitter and vehicle to confirm a successful connection.
- Test steering and throttle response at low speed to ensure proper function before full operation.
5. Operating Instructions
The ARRMA Typhon GROM is designed for exciting off-road performance. Familiarize yourself with the controls and practice in a safe, open area.
5.1. Basic Controls
- Throttle Trigger: Pull to accelerate forward, push to brake/reverse.
- Steering Wheel: Turn left or right to steer the vehicle.
- Trim Dials: Adjust steering and throttle trim to ensure the vehicle drives straight and stops when the trigger is neutral.
5.2. Driving Tips
- Terrain: The 4WD drivetrain and advanced suspension system allow for driving on dirt, grass, and other uneven surfaces. Avoid extremely deep water or mud despite waterproof electronics.
- Speed Control: Start with lower speeds to get accustomed to the vehicle's handling. Gradually increase speed as your confidence grows.
- Jumping: The Typhon GROM is designed for jumps. Approach jumps with consistent speed and maintain throttle through the jump for stable landings.
- Waterproof Electronics: The Spektrum SLT 2-in-1 25A waterproof ESC and receiver, along with the SX110 waterproof metal-geared servo, enable all-weather performance. However, prolonged submersion is not recommended.
6. Maintenance
Regular maintenance will extend the life and performance of your ARRMA Typhon GROM.
6.1. After Each Run
- Clean the Vehicle: Remove dirt, dust, and debris from the chassis, suspension, and wheels using a soft brush or compressed air.
- Inspect for Damage: Check for any broken or loose parts, especially after impacts. Pay attention to suspension arms, shocks, and drivetrain components.
- Check Hex Hardware: Ensure all screws and nuts are tight. The vehicle is built with reliable hex hardware for durability.
- Charge Battery: Recharge the LiPo battery for the next use.
6.2. Periodic Maintenance
- Drivetrain Inspection: Periodically inspect the enclosed metal gear drivetrain for wear or damage. Clean any accumulated debris.
- Shock Maintenance: Check the oil-filled coil-over shocks for leaks or reduced damping performance. Refill or replace shock oil as needed.
- Tire and Wheel Inspection: Check tires for wear and ensure wheels are securely attached.
7. Troubleshooting
This section addresses common issues you might encounter with your ARRMA Typhon GROM.
| Problem | Possible Cause | Solution |
|---|---|---|
| Vehicle does not turn on. | Battery not charged or connected; Transmitter off or low battery; ESC not powered. | Ensure vehicle battery is charged and connected. Check transmitter batteries and power. Turn on transmitter first, then vehicle. |
| Loss of control or erratic behavior. | Interference; Loose wiring; Transmitter/receiver not bound. | Move to an area with less interference. Check all wiring connections. Re-bind transmitter and receiver (refer to separate transmitter manual if needed). |
| Reduced speed or power. | Low battery charge; Motor/drivetrain issue; Overheating. | Recharge battery. Inspect motor and drivetrain for debris or damage. Allow components to cool down if overheating. |
| Steering not centered. | Steering trim incorrect; Servo linkage issue. | Adjust steering trim on the transmitter. Check servo and linkage for damage or looseness. |
8. Specifications
Key specifications for the ARRMA Typhon GROM 4x4 Smart Small Scale Buggy RTR:
- Brand: ARRMA
- Model Name: ARRMA RC Car Typhon GROM 4x4 Smart Small Scale Buggy RTR
- Model Number: ARA2106T2
- Scale: Small Scale
- Drivetrain: 4WD
- Motor: ARRMA MEGA 380 28T Brushed Motor
- ESC/Receiver: Spektrum Waterproof SLT 2-in-1 25A ESC & Receiver
- Servo: Spektrum SX110 Waterproof Metal-Geared Servo
- Battery: 1x Spektrum 2S LiPo (included)
- Charger: Spektrum Smart Charger (included)
- Dimensions (L x W x H): 13.9 x 9.6 x 7.6 inches
- Weight: 2.6 Pounds
- Material: Plastic
- Age Range: 14+ years
9. Warranty and Support
For warranty information, technical support, or replacement parts, please contact ARRMA customer service or visit the official ARRMA website. Keep your proof of purchase for any warranty claims.
ARRMA is a brand of Horizon Hobby, LLC. For detailed support, refer to the contact information provided with your product packaging or on the official Horizon Hobby website.
Online resources and FAQs can often be found on the ARRMA Store on Amazon.