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SON 28 disc hub dynamo

Product 18 of 24
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Schmidt
Durable, long lasting and efficient bicycle hub dynamo for disc brake usage.
Please select a variant
SON 28 is designed for wheels from size 16“ to 29" (700c). It is recommended, if a maximum power output is necessary at low speed, such as when using the Ullmann Power-Station V4 to charge your batteries, power bank or to supply your smartphone or GPS during the ride.

The first pressure equalization system, was realised in SON 28 klassik in 2002 and now protects all types of SON efficiently from ingress of water.

Guarantee period: 5 years
Included in delivery: Skewer and connectors for the headlight

Technical data
Electrical power output: 6 V/3 Watts according to the German road traffic regulations StVZO
German mark of conformity: ~~~ K834 for 16“ to 29“
Efficiency: 65% at 15 km/h in 622 wheel
No-load loss: 0.5 Watt at 15km/h in 622 wheel
Magnet rotor: Neodymium-iron-boron, 26 poles
Contacts: 4.8mm flat spades, 2-pin, to connect without ground connection
Axle: hollow axle, Ø 10mm, strain-hardened stainless steel
Bearings: Deep Groove ball-bearing 629 2RSH
Hub shell: aluminium 6082, T6
Sealing: Alloy dust shields, rubber lip seals and pressure compensation system
Weight: 465g

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Artnum: Schmidt
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