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SON 28 135 disc hub dynamo HR | black

Product 6 of 10
The first Fatbike hub dynamo with 135mm axle.
Fat bikes need electricity too! For their extra wide forks Schmidt Maschinenbau has build the SON 28 135 disc.
Flange spacing is 68mm, symmetric. The rotor is positioned at 15.3mm (standard for rear disc brakes) or 10.4mm (standard for front disc brakes on SON 28 135 discVR).

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 a halogen headlight or charging your batteries or using your smartphone or GPS with the Ullmann Power Station.

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: 525g

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Artnum: Schmidt
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