7075 aircraft-grade aluminum alloy has excellent physical properties, offering abrasion resistance, deformation resistance, high stiffness and ultralight weight. Made of 7075 aluminum alloy, the the overall chainring only weighs 143g while maintaining such excellent performance. According to the stress contour based on FEA technical analysis, we strengthen the structural design of the part under concentrated stress. Therefore, it can reduce the deformation under heavy load. We create an excellent balance among weight, rigidity, and durability, which perfectly meets professional cyclists’ demands in training and racing. *QED light-weight split chainring has passed more than 100,000 fatigue tests and more than 40,000 kilometers of endurance tests. *Data comes from Magene Lab.
CNC Machining Technology
CNC stands for Computer Numerical Control, which presents a precise manufacturing process with uniform and consistent standard. Adopting CNC technology ensures that all components work together to function flawlessly. Featuring the cutting-edge CNC technology, the machining and positioning technique is effective and accurate.
Self-developed Tooth Design
After multiple iterations of product design, and research on the performance and wear characteristics of various tooth-shaped chainring, the QED lightweight split chainring adopts a brand new self-developed 3rd generation tooth shape. As a result, the transmission and shifting efficiency have been significantly improved.
We re-calculate parameters related with root, groove, and shape of teeth on chainring and make targeted adjustment so as to improve mechanical transition efficiency under heavy load. Therefore, chain can bite on the chainring tightly and switch precisely and quickly from small to big chainring.
The chain can switch to big chainring by 1/5 round in the fastest case. This ensures accurate and smooth shifting at different speed in different conditions.
The width between each tooth is increased, and the strength between the teeth is further improved. This can effectively prolong the longevity of chainring. The service life of the chain and chainring is increased by about 3% compared with before optimization.