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

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Bicycle Shifters Manufacturer

Bicycle turnbuckle controller is a kind of shifting component of bicycle, which controls the shifting of front and rear chainstay by pulling the cable, and is mainly applied to mountain bikes and folding bikes. Turnbuckle shifting is characterised by simple, fast and convenient operation, which can complete shifting in a short time and is suitable for use in racing or mountain riding. In addition, turnbuckle shifting can also be used on folding bikes because it has the advantages of small size and not occupying space.
Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Tongkin Technology Co., Ltd. is a China Bicycle Shifters Manufacturer and Shifting Lever Factory, 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.


Twist Shifter Industry knowledge

How to perform basic inspection of Twist Shifter, including inspection of installation firmness and connection parts?

Performing a basic inspection of your Twist Shifter is an important step in making sure it's working properly. The following is a detailed process for basic inspection of Twist Shifter, including inspection of installation firmness and connection parts:
1. Inspection of installation firmness
First, check whether the Twist Shifter is installed securely.
Observe the appearance: From the outside, the shifter should fit snugly into the surrounding panel or trim, with no obvious gaps or misalignments.
Manual test: Gently shake the shifter to see if it feels loose or wobbly. If the shifter can shake easily, the installation may not be secure and you need to further check whether the fixing screws or buckles are tight.
Check the retaining screws: Use an appropriate tool to check that the shifter retaining screws are tight. If the screw is loose, use a screwdriver or wrench to tighten it.
2. Check the connection part
The connection between the Twist Shifter and the transmission is also the focus of inspection.
Check the connecting harness: Check whether the connecting harness between the shifter and transmission is intact and not broken or worn. At the same time, make sure the wiring harness is firmly connected and not loose or falling off.
Check the shift lever: The shift lever is an important part connecting the Twist Shifter and the transmission. Check that the shift lever is straight and not bent or deformed. At the same time, observe whether there is abnormal wear or damage at the interface between the shift lever and the transmission.
Operational test: Test the functionality of the shifter in actual operation. Starting from the lowest gear, try each gear one by one to ensure that the shifting is smooth and there is no lag or abnormal noise. If you find that the gear shift is not smooth or there is abnormal noise, there may be a problem with the connecting part and further inspection is required.
3. Precautions
When performing basic inspections, make sure the vehicle is in a safe condition and avoid inspections while driving. At the same time, if you are not familiar with vehicle structure or maintenance operations, it is recommended to seek help from professional technicians to avoid more serious failures or safety issues caused by improper operation.
Through the above steps, you can perform basic installation firmness and connection inspection on the Twist Shifter. If problems are found, they should be dealt with in time to ensure the normal operation of the Twist Shifter and improve driving comfort and safety.