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Founded in 1991, Ningbo Sunrun Bicycle Co., ltd & Its branch company Ningbo Tongkin Technology Co., Ltd.

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OEM/ODM 3S Bicycle Front Derailleur
Home / Products / Front Derailleur / 3S Bicycle Front Derailleur
3S Bicycle Front Derailleur
FD-QD-12

3S Bicycle Front Derailleur

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Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM 3S Bicycle Front Derailleur Supplier and ODM 3S Bicycle Front Derailleur company was founded in 1991, specializing in the production of bicycle transmission systems, braking systems and other components. The leading products include a series of derailleurs, variable speed flywheels, high-end cassette hubs, disc brakes, brake components, cranksets and more than 300 varieties in six categories.

In 2015, in response to Made in China 2025, the company established Ningbo Dongjin Technology Co., Ltd. to develop a new internal and external variable speed transmission system, entering the first echelon of the domestic industry. "Chicheng wheel industry, quality first" is the pursuit of quality by Richeng people. The company has introduced internationally advanced key technologies such as precision cold forging, CNC machining, heat treatment, and multi-station stamping to develop transmissions with Richeng characteristics. , transmission kit, sales volume leads domestic peers. The registered brands SUNRUN, TONGKEEN and HEMU enjoy high reputation in domestic and foreign markets. The company has independent export rights, and its products are exported to Europe, North America, Central and South America, Africa, Southeast Asia and other countries and regions. Xu Mingqiang, chairman of the company, sincerely invites domestic and foreign merchants to come for negotiation and guidance.

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Industry Knowledge Extension

How does the Bicycle Front Derailleur's front derailleur work with the rear derailleur?

The Bicycle Front Derailleur (Bicycle Front Derailleur) and the rear derailleur work together to achieve the rider's speed changes under different road conditions and riding needs by precisely controlling the chain switching between different gears.
First, let's understand the basic working principle of the front derailleur. The front derailleur is located near the foot pedals and is connected to a set of front gears. These front gears are of different sizes and are connected to them by chains. When the rider steps on the pedals, the chain drives the front gear to rotate, thus driving the bicycle forward. The function of the front derailleur is to allow the rider to adjust the meshing position of the chain and the front gear as needed in order to select a suitable gear ratio.
The rear derailleur, meanwhile, controls the position of the chain on the rear gear set. The rear gear set is located at the wheel and also contains multiple gears of different sizes. The rear derailleur changes the speed and power output of the wheels by adjusting the position of the chain on the rear gear set.
During the shifting process, the front derailleur and the rear derailleur need to work together. The rider sends shifting instructions by operating the shifting handle or lever. The front derailleur first adjusts the meshing position of the chain and the front gear according to the instructions. Once the front shift is complete, the rear derailleur responds by adjusting the position of the chain on the rear gear set.
The key to this working together is ensuring a smooth transition of the chain between the front and rear cogs. The design of the front and rear derailleurs takes into account the spacing between gears and the length of the chain to ensure that the chain moves smoothly from one gear to the next when switching between different gear ratios.
Through the front derailleur and rear derailleur working together, the rider can flexibly select the best gear ratio based on road conditions, gradient and personal riding needs. Whether you need to accelerate, climb hills, or maintain a stable riding speed, the coordinated cooperation of the front and rear derailleurs can provide the rider with the best riding experience.
In general, the Bicycle Front Derailleur's front derailleur and rear derailleur work together to achieve the bicycle's shifting function by precisely controlling the chain's switching between different gears. This synergistic working ensures optimal riding efficiency and comfort for the rider in different conditions.