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5-speed Internal Gear Hub for Hub Motor
Industry type：Transportation
Product model number：RX-RF5(E)
Sun Race Sturmey-Archer Inc.
Electrical bicycle is the most blooming category in bicycle industry, especially in Europe. It grows double digits in recent years. Many companies are interested in this field, not only bicycle companies.
The biggest electrical bicycle market is in Europe. When it comes to “electrical bicycle”, we are talking “Pedelec”, the electrical motor assistant bicycle. Like people in Holland and Germany, they are used to ride bicycles for short distance communicating in the cities. Internal gear hubs are the most popular transmission system for those city bikes. The roads are in good condition and usually are flat in the cities so it is not necessary to have wide gear ratio and many gears for city bikes. Internal gear hub does not have as many gears as derailleur system, but its benefits are durability, easy use, and maintenance free. On the contrast, derailleurs are easy to be damaged and have “fall-off chain” problem so internal gear hub is much suitable for city bikes.
There are two major power types in pedelec. One is hub motor, another is central motor. Hub motor is equipped in the rear wheel. It is quite, better ride feel, and can be used in ordinary frame directly. Unfortunately, you can not use internal gear hub with motor hub together. That is why some electrical bicycles use central motor instead.
Our RX-RF5(E) is designed for hub motor exclusively to meet the market demand of hub motor and internal gear hub. We designed the hub shell to adapt to motor so that motor manufacturer could design a motor to be integrated RX-RF5(E) internal gear hub. This internal gear hub is still for cyclist only, not for motor.
Major features are as following,
1. 5-speed with gear ratio of 243%
2. Even gear steps of 25%, 25%, 25%, 25%
3. Rotary gear selector with no protrusions outside the frame
4. Designed for heavy duty use
5. Aluminum alloy hub shell
About Sun Race Sturmey-Archer Inc.
Sun Race Sturmey-Archer Inc. was set up in 1972. By the efforts of president Hsu and all stuffs, we have been one of the three biggest bicycle drivetrain manufacturers in the world. We were aware of that having our own techniques and qualities are the only way to success. So R&D and innovation are always our basic business belief. Nowadays, we have gotten many key patents and applied these patents on many products.
Although many manufactures have moved to China, we still believe that the real and last competitive ability is not the cost, it should be the innovation, quality, and management. As well as we try to make our products to be more creative and different. We will refresh the brand “the kingdom of the bicycle industry” of Taiwan.
In the future, develops high quality , high value ,high competitive power products was the plowing plants the world target in Sun Race Sturmey-Archer Inc.
Frank Bowden purchased a bicycle company initially located in Raleigh Street, Nottingham, England .His engineers worked with patents from Henry Sturmey and James Archer resulting in the first Sturmey-Archer 3-speed bicycle gear hub in 1902. For more than 100 years, Sturmey-Archer has been a pioneer in the design of internal gear hubs, hub brakes and dynamo lighting. This is a history of progressive research and development which has made cycling easier and safer. Moving production to Taiwan in 2000 improved access to better technology, resulting in many design and quality improvements. High quality, design, research and development are now the cornerstones of the company. The current range of products continues that tradition of innovation and design excellence demanded by discerning cyclists worldwide.
Contact info
Tel：03-3544979
Fax：03-3544392
Email：alan@sunrace.com
Tel：03-3542691#2160
Fax：(03) 3542857/8
Email：yamei@sunrace.com
Tel：03-3543900#2221
Fax：03-3542858
Email：kidman@sunrace.com
