TI-3.7-Round-Spoke

TI Titanium Spokes | Lightweight High-Performance Wheel Spokes

Two months ago, we set up a dedicated team specializing in titanium alloy spoke manufacturing. Following two months of market research and repeated design iterations by our elite team, this 3.7g titanium alloy spoke is officially launched. The colours listed below are available for customisation

color

Surface Treatment: Polishing, Sandblasting, Coloured Anodising, Black PVD Coating

Naturally Light, Superior Performance

Low-density material delivers inherent weight savings

Titanium alloy features a base density of approximately 4.44 g/cm³, merely 56% of steel spokes (7.85 g/cm³). Weight reduction is achieved via intrinsic material physical properties without compromising structural dimensions. Under identical length and diameter specifications, titanium spokes are inherently lighter than steel alternatives. They effectively cut rotating mass of the wheel set, boosting acceleration and handling responsiveness during riding.

High Toughness, Durable & Break-Resistant

With precisely proportioned aluminum-vanadium alloy, our titanium spokes exhibit outstanding mechanical strength. The ultimate load reaches 360 kgf, with a mid-section tensile strength of 1126 MPa. The applicable tension range for wheel lacing stands at 80–140 kgf, resisting yielding under high tension.

Every spoke undergoes high-temperature refining and complete stress relief prior to delivery, alongside multiple quality inspections including tensile testing, hardness measurement and cyclic fatigue evaluation. The cyclic fatigue test reaches 19,366 cycles, demonstrating exceptional fatigue resistance. Comprehensive performance surpasses stainless steel and aluminum alloy spokes, balancing three core merits: lightweight construction, fracture resistance and long-term corrosion tolerance. Once assembled into wheelsets, load is distributed evenly. The spokes resist permanent deformation over prolonged riding and minimize wheel truing deviation, greatly enhancing stability and service lifespan.

Two Core Precision Manufacturing Processes

 
1. Precision Machining for Consistent Aerodynamic Performance

Titanium alloy poses extreme machining challenges. TI adopts self-developed dedicated fixtures and precision grinding processes for spoke production, rigorously controlling surface flatness and dimensional consistency of each spoke to eliminate surface irregularities caused by conventional machining.

Uniform, streamlined spoke geometry prevents localized turbulence triggered by surface imperfections as air flows across the wheel, sustaining stable aerodynamic efficiency and lowering wind resistance losses while cycling.

2. Flared Rounded Transition Head Design

The junction between spoke head and shaft is a high-risk zone for fatigue crack initiation.

We implement a flared rounded transition structure:

1.Curved profile disperses stress, mitigates stress concentration, drastically extends fatigue life and lowers fracture risks;

2.Uniformly transfers tensile force to the hub bore wall, eliminating high-pressure points at sharp edges and preventing the spoke from gouging or cutting hub holes;

3.Rounded chamfer enables smooth insertion of the spoke into the hub bore. Self-centering fine adjustment occurs during tensioning, facilitating even tension distribution across the wheel, preventing spoke pull-out and simplifying wheel building and installation.