SON XS Hub Dynamo for Brompton Folding Bike - 8x74mm - black anodized

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Description of SON XS Hub Dynamo for Brompton Folding Bike - 8x74mm - black anodized

XS - The hub dynamo for folding bikes

This variant of the SON XS hub dynamo is optimized for the narrow forks of Brompton folding bikes. The hub dynamo got side slots instead of the spoke holes. straightpull spokes are mounted in these slots, as they can be found in system wheels. The XS hub dynamo offers semi-radial lacing. This makes the wheel elegant and durable, because the bending moment is omitted in the spokes bow. Allowed wheel sizes range from 16-20 inches.

This hub dynamo achieves an efficiency of 60% (0,7 Watts) already at a riding speed of 15 km/h. Its weight of less than 400g ensures that the bike is not heavier than a bike equipped with conventional front hub and friction wheel dynamo.

Because of the low width of the flange the lateral rigidity of the wheels is smaller than with hubs with conventional geometry.

Technical Data:

  • Electric Power: 6V / 3W according to German government's road traffic regulations (StVZO)
  • German Mark of Conformity: ~~~ K 439 for 16" - 20"
  • Efficiency: 60% at 15 km/h
  • No-Load Power Input: 0,7 Watt at 15 km/h
  • Magnets: neodym iron boron, 26 poles
  • Connection: 4.8 mm flat spades, 2-pin, to connect without ground connection
  • Axle: hollow axle aluminium 7075 T6
  • Bearings: deep groove ball bearing 629 2RSH (SKF)
  • Hub Shell: aluminium 6082 anodized and polished
  • Sealing: alloy dust shields, rubber lip seals and pressure compensation system
  • Spoke Drillings: 20,28
  • Weight: approx. 350 g (without fasteners on axle)
  • Manufacturer Warranty: 5 years
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Fact Sheet of SON XS Hub Dynamo for Brompton Folding Bike - 8x74mm - black anodized

Product Name: SON XS Hub Dynamo for Brompton Folding Bike - 8x74mm - black anodized
Manufacturer: SON
Item Code: SON359447
Year: 2018
Manufacturer item code: 20 grooves: 342062 / 28 grooves: 342862
Material: magnet rotor: Neodymium-iron-boron, 26-pin
hub shell: aluminum 6082 anodized
hollow axle: aluminum 7075 T6
Weight: approx. 350 gram (without clamping axle, manufacturers information)
Hole number: 20 / 28
Hub axle system: 8x74mm
Included in delivery: SON XS incl. clamping axle, connection material
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Selection: SON XS Hub Dynamo for Brompton Folding Bike - 8x74mm - black anodized
Currently not in stock Delivery time 2-3 days Number of Spokes 20 Slots
Currently not in stock Delivery time 2-3 days Number of Spokes 28 Slots
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