SON 28 is a generally approved hub dynamo for all wheel sizes up to 700c (29"). On a 28"-wheel nominal output is reached at about 16 km/h (SONdelux at 19 km/h). SON 28 is recommended when more light is required at low speed or when other devices are to be operated or their batteries recharged. Compared to the SONdelux, the appearance is similar but the flanges are more widely spaced by 12mm and the bearings by 10 mm. Disc brake versions are available with 6-hole or Shimano's Center Lock rotor mounting system. Compared to SON 28 klassik (manufactured from 2000 to 2011) no-load losses were reduced by about 15 % and weight by 140 g.
Electric Power: 6V / 3W according to German government's road traffic regulations (StVZO)
German Mark of Conformity: ~~~ K 834 for 16" 29"
Efficiency: 65% at 15 km/h in 700c-wheel
No-Load Power Input: 0,5 W at 15 km/h in 700c-wheel
Magnets: neodym iron boron, 26 poles
Connection: 4,8 mm flat spades, 2-pin to connect without ground connection (special design without connectors)
Axle: hollow axle Ø 10 mm, strain-hardened stainless steel, (Center Lock rotor mounting system licenses by Shimano: aluminium 7075 T6)
Bearings: deep groove ball bearing 629 2RSH (SKF)
Hub Shell: aluminium 6082 T6
Colors: silver polished, anodized silver, black or red
Sealing: alloy dust shields, rubber lip seals and pressure compensation system
Spoke Drillings: 28 (only ISO 6-bolt), 32, 36
40, 48 (tandem version with a larger flange)
Weight: 440 g (ISO 6-bolt: 460 g, Center Lock rotor mounting system licenses by Shimano: 430 g)
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Show all items from SONSON is a German company that specializes in the manufacture of cycling dynamo hubs and lighting systems. The company was founded in 1993 and has since become one of the leading brands in the cycling industry, renowned for its quality, durability and innovation.
The SON dynamo hub is a highly efficient generator that provides a reliable source of power for bicycle lighting systems. The hub is easy to install and operates quietly and smoothly, making it a popular choice among cyclists who require a reliable and low-maintenance lighting solution.
SON offers a range of dynamo hubs for different types of bicycles, including road, touring and city bikes. The hubs are available in different sizes and colors, and can be customized to meet the specific needs of the cyclist.
In addition to its dynamo hubs, SON also offers a range of lighting systems that are powered by the hub. These include front and rear lights, as well as high-end systems with advanced features such as automatic on/off and sensor-controlled brightness. The lights are designed to be easy to install and use, and are known for their bright, powerful illumination.
Overall, SON is a company that is dedicated to providing high-quality, innovative and reliable cycling lighting solutions. Its products are made in Germany to the highest standards, and are used by cyclists all over the world. Whether you are a serious cyclist or simply enjoy riding your bike, SON has a lighting solution that will meet your needs.