CONTACT US

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

Ready to work with us?
OEM/ODM 11S Bicycle Rear Derailleur
Home / Products / Rear Derailleur / 11S Bicycle Rear Derailleur
Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM 11S Bicycle Rear Derailleur Supplier and ODM 11S Bicycle Rear 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.

Certificate

Industry Knowledge Extension

How should the Bicycle Rear Derailleur properly use the transmission system during riding?

During riding, proper use of the Bicycle Rear Derailleur's shifting system is key to ensure a smooth shifting experience and efficient riding. Here are some recommended steps and considerations:
1. Be familiar with the transmission system and gears:
Before you start riding, understand your bike's shifting system, including the number of gears on your rear derailleur and the range of corresponding cassettes.
Be familiar with the characteristics and applicable scenarios of each gear. For example, the low-speed gear is suitable for climbing or starting, and the high-speed gear is suitable for flat roads or downhill.
2. Adjust the gear according to road conditions and riding needs:
When encountering an uphill slope or needing to accelerate, switch to a lower gear in a timely manner to reduce the burden on your legs and improve riding efficiency.
On flat roads or downhill, you can switch to a higher gear to take advantage of coasting or increase riding speed.
3. Change speed smoothly and avoid sudden switching:
When changing gears, try to maintain a smooth pedaling rhythm and avoid sudden gear changes to reduce the impact on the rear derailleur and chain.
If continuous shifting is required, the gears can be adjusted gradually, changing only one or two gears at a time to ensure smooth shifting.
4. Pay attention to the timing and techniques of changing speed:
When changing gears, choose to do it during the rising stage of pedaling or the early stage of pedaling, which can reduce the possibility of the chain jumping or falling off.
Before shifting, you can lighten your pedaling pressure slightly to make it easier for the chain to switch from the current cog to the target cog.
5. Maintain rear derailleur and chain:
Regularly check the rear derailleur and chain for wear, clean and lubricate them in time to ensure they work properly.
If you find that the rear derailleur or chain is damaged or abnormally worn, you should contact a professional for repair or replacement in time.
Therefore, proper use of Bicycle Rear Derailleur's shifting system requires familiarity with the shifting system, adjusting gears according to road conditions and riding needs, shifting smoothly, paying attention to shifting timing and techniques, and regularly maintaining the rear derailleur and chain. By mastering these tips and techniques, you'll be able to better utilize your rear derailleur's shifting system, improving your riding experience and efficiency.