SON 28 DYNAMO FOR BIKES
INFO
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. SON 28 is recommended when more light is required at low speed or when other devices are to be operated or their batteries recharged.
| 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) |
| Warranty: | 5 years |
MEDIAGALLERY
Q&A
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