Brake System

The HINE-R brake system is being developed as a high-performance hydraulic disc brake designed to deliver powerful, consistent braking with predictable modulation and long-term reliability.

The system is engineered to provide controlled braking power, stable lever feel and straightforward servicing across demanding riding conditions including steep descents, technical terrain and long alpine trails.

Brake System Architecture

The HINE-R braking system is built around a four-piston hydraulic caliper paired with a precision master cylinder. The relationship between caliper piston area and master cylinder displacement determines braking force, lever travel and modulation.

This hydraulic balance allows the system to generate strong braking power while maintaining a light and controlled lever feel.

Four-Piston Brake Caliper

The HINE-R caliper uses a four-piston configuration with 16 mm pistons. Using equal piston diameters distributes hydraulic pressure evenly across the brake pads, helping maintain consistent contact across the rotor surface.

This balanced pressure distribution improves braking stability during sustained braking while allowing precise speed control when riding technical terrain.

The caliper architecture is designed with structural strength and mechanical simplicity as primary objectives. Geometry is optimised for precision CNC machining while maintaining the rigidity required for consistent braking performance.

Hydraulic Balance

Hydraulic brake performance is determined by the relationship between the master cylinder and caliper pistons. The HINE-R system is designed around a carefully balanced hydraulic ratio that provides responsive braking control without excessive lever travel.

This balance allows riders to apply braking force progressively while still providing strong stopping power when required.

Master Cylinder

The master cylinder is designed around a piston diameter of approximately 9 mm. This sizing helps achieve the hydraulic leverage ratio required to balance braking power, lever travel and modulation.

The result is a braking system that delivers strong stopping performance while maintaining a light and responsive lever feel.

Mineral Oil Hydraulic System

The HINE-R braking system operates using mineral oil hydraulic fluid. Mineral oil maintains stable viscosity across a wide temperature range and simplifies servicing compared with DOT-based brake systems.

It also reduces the risk of paint damage and makes routine maintenance easier for both riders and workshops.

Piston Seal Behaviour

Piston seal behaviour plays a critical role in braking feel and piston retraction. The seals must maintain hydraulic pressure while allowing the pistons to retract consistently after braking.

Stable piston retraction helps maintain consistent pad clearance and predictable braking performance during repeated braking cycles and long descents.

Structural Design

The structural architecture of the HINE-R caliper is designed to minimise flex under braking loads while maintaining efficient CNC machining geometry.

Key design priorities include:

• High structural stiffness
• Clean CNC machining geometry
• Efficient manufacturing processes
• Serviceable internal components

Serviceability

The braking system has been designed with servicing in mind. Hydraulic brake systems require regular maintenance, and the HINE-R system is designed to allow straightforward servicing using standard tools and accessible hardware.

This ensures routine maintenance and long-term reliability for both riders and workshops.

Development Status

The HINE-R brake system is currently undergoing prototype development and testing. Mechanical refinement, hydraulic balance and structural optimisation remain key priorities as the project progresses towards production-ready components.

Future development stages will focus on durability testing, machining optimisation and final production validation.