Why TRI-UNITY30 Is Different

In the traditional SCX30 center worm-based layout, mechanical reduction plays a major role in producing slow crawling speeds. Changing the motor and ESC alone leaves that central transmission architecture in place.

TRI-UNITY30 redesigns the transmission and its control system together. Conventional gears handle power transfer to the axles, while Furitek FOC handles precise low-speed motor control. This gives the drivetrain greater freedom to deliver wheel speed without relying on extreme center reduction for crawling control.

The change is specifically in the center drivetrain. It does not describe a replacement of the axle internals.

FULLRANGE DRIVE™: Precision Crawl to High Wheel Speed

FULLRANGE DRIVE™ is Furitek's concept for a broad, usable speed range from the same drivetrain. Ease into the throttle for careful tire placement, accelerate smoothly between obstacles, and call on higher wheel speed for loose surfaces or climbs that need momentum.

That continuous range gives the SCX30 a more realistic response to throttle input. Slow technical movement and faster driving become parts of one natural driving experience.

Furitek FOC: Ultra-Low-Speed Control

FOC, or Field-Oriented Control, manages the brushless motor's torque-producing current to support smooth, precise operation. In TRI-UNITY30, this control is central to achieving ultra-slow crawling with the new geared transmission.

The transmission still provides mechanical reduction and torque multiplication. FOC adds the fine control needed to use that drivetrain at very low speeds, while preserving access to its wider speed range as throttle input increases.

Ultra-Low CG and Compact Integration

The motor, transmission, and ESC are designed as one assembly, with the ESC integrated into the transmission package. This brings electronics mass down into the drivetrain area and removes the need to find a separate ESC mounting position higher in the chassis.

The resulting layout is designed to dramatically lower the vehicle's center of gravity compared with conventional SCX30 layouts with higher-mounted drivetrain components and electronics. Keeping this mass low helps the vehicle stay composed on steep climbs, side slopes, and uneven obstacles.

Compact integration also leaves more room for battery placement and chassis layout. The final vehicle balance depends on the complete build, including the battery, chassis, wheels, and axles.

Driver-Selectable Front or Rear Weight Bias

The motor and ESC sit on the same side of the drivetrain assembly. Their mass stays together, allowing the driver to place it toward the front or rear by choosing the drivetrain orientation supported by the chassis and skid setup.

A forward orientation can help keep the front axle loaded during climbing. A rearward orientation gives builders another option for balancing the vehicle around battery placement, terrain, and driving preference.

Low component placement controls mass height. Drivetrain orientation tunes front-to-rear mass distribution. These are two separate advantages of the integrated design.

Compatibility and Installation

• Target platform: Axial SCX30, 1/30 scale.
• With Alu Skid version: Includes the FUR-2843 Aluminum Skid Plate for the TRI-UNITY30 drivetrain.
• Orientation: Front-facing or rear-facing installation depends on skid mounting, chassis clearance, and driveshaft fitment.
• Radio and battery requirements: 2S–3S LiPo power with a 2-pin JST-PH 2.0 battery connector. Choose a transmitter and receiver combination from the recommended options below.

Technical Specifications

Recommended Transmitter & Receiver Options

Choose a complete transmitter and receiver combo, or select a receiver to match the transmitter you already own. The following radio products are sold separately from the TRI-UNITY30 FULLRANGE DRIVE™ system.