Bafang H730 hub motor showcases intuitive GVT shifting technology

Source: Nieuwsfiets

LEVA-EU member Bafang has launched its H730 hub motor, which features a three-speed automatic gear hub using the brand’s patented Gear Variable Transmission (GVT) technology.

The GVT-equipped hub motor shifts based on riding speed, without the need for manual intervention from the rider. According to Bafang, the H730 is designed to automatically shift around 100 times during a 20-kilometer ride; Leo Wang, Bafang R&D Senior Manager, says, “Automatic shifting makes cycling easier, especially in busy cities where cyclists need to focus on safety rather than gears.”

Streamlined design and enhanced durability

H730 is designed without external components such as gear cables, levers and derailleurs, resulting in a streamlined design and enhanced durability, with good weather resistance and reduced maintenance requirements. The system includes a clutch sensor and controller, which analyse pedalling force and adjust the motor power accordingly. This is intended to prevent the rider experiencing unwanted situations such as ‘ghost pedalling’. The motor supports speeds of up to 25 km/h and is aimed at energy efficiency for urban commuting.

A focus on ease of use

Bafang has designed the H730 to be compatible with various e-bike designs, including belt drive systems. The GVT technology builds on earlier development work by Bafang, including products such as the external rotor hub motor (2003) and the M400 mid-motor system (2015). Since the introduction of the H700 2-speed hub in 2022, GVT technology-equipped products have been adopted by multiple e-bike brands in a range of cycle categories, including city, cargo and touring bikes. The design philosophy behind GVT is focused on ease of use. The system is also available in combination with mid-motor systems, such as the M210 with the RG A310.D internal gear hub with three automatic gears. Zou Bin, Bafang GVT Engineer, says, “GVT has transformed gear shifting from a mechanical process to an intuitive experience, where rider and machine become one.”

Broad usage scenarios

The GVT series includes motors with power ratings between 250W and 1000W, and features specialised products including the RG A510.D five-speed hub, designed for applications with torques up to 200Nm, such as cargo bikes. With the introduction of platform-based systems, including applications in shared bikes and folding models, Bafang seeks solutions that respond to design challenges and reduce wear. Leo Wang says, “GVT is more than a product, it is a technological foundation. We are exploring new possibilities to further improve the cycling experience.”

Find out more about the H730 here.