Products » Hub dynamos » for Folding Bikes

Hub Dynamos for Folding Bikes – SON XS

There is more to a folding bike like the Brompton than just a practical means of transportation. They are chic, represent a life style and you can customize them individually. The SON XS is optimized for the small wheels and the narrow fork of folding bikes. Since 2013, SON XS has a smaller housing for straight pull spokes.

 

made in Tübingen
5 years guarantee

SON XS for Brompton

SON XS is optimized for the small wheels and the narrow fork of folding bikes. Thus the low weight and minimum no-load losses are achieved.

  •  for Brompton folding bikes with axle diameter 8 mm
  •  semi radial spoke pattern (also available as complete wheel)
  •  3 standard colours (polished, silver anodized, black anodized)
  •  SON XS à la carte with one or two colours on centre part
20 slots 342072
28 slots 342872
polished
RRP in D 209,00 €
20 slots 342092
28 slots 342892
silver anodized
RRP in D 209,00 €
20 slots 342062
28 slots 342862
black anodized
RRP in D 209,00 €
28 slots 342882
à la carte
RRP in D 249,00 €

Weight: 350 g

Width: 74 mm

Axle diameter: 8 mm

6 Volt / 3 Watts for wheel size 16″ up to 20″ conforming to German legal regulations

SON XS for Tern, Dahon

SON XS is optimized for the small wheels and the narrow fork of folding bikes. Thus the low weight and minimum no-load losses are achieved.

  •  for folding bikes with axle diameter 9 mm (Tern, Dahon etc.)
  •  semi radial spoke pattern
  •  3 standard colours (polished, silver anodized, black anodized)
  •  SON XS à la carte with one or two colours on centre part
20 slots 352072
28 slots 352872
polished
RRP in D 209,00 €
20 slots 352092
28 slots 352892
silver anodized
RRP in D 209,00 €
20 slots 352062
28 slots 352862
black anodized
RRP in D 209,00 €
28 slots 352882
à la carte
RRP in D 249,00 €

Weight: 350 g

Width: 74 mm

Axle diameter: 9 mm

6 Volt / 3 Watts for wheel size 16″ up to 20″ conforming to German legal regulations

SON XS klassik for Brompton

For lovers of the old design the SON XS klassik is still available.

  •  for Brompton folding bikes with axle diameter 8 mm
28 hole 232852
polished
RRP in D 209,00 €

Weight: 400 g

Width: 74 mm

Axle diameter: 8 mm

6 Volt / 3 Watts for wheel size 16″ up to 20″ conforming to German legal regulations

CONFIGURATOR

SON XS à la carte

Similar to the varied colour selection of the Brompton folding bikes, the SON XS can be individually configured. The side parts can be selected in polished as well as silver and black anodized. For the two centre parts there is a choice of ano-dized colours: silver, black, red, blue, orange, gold, dark green and pink. Just try it out!

Please choose a colour for the left side part:

Please choose a colour for the left centre part:

Please choose a colour for the right centre part:

Please choose a colour for the right side part:

Semi Radial Spoke Pattern

We developed the semi radial spoke pattern, to realize the extra compact and elegant design of the new SON XS. We positioned the hub slots for the spokes in such a way that, when lacing spokes, the straight pull spokes bend slightly as soon as they are tensioned. A purely radial spoke pattern would be critical with hub dynamos, as the pole sensitivity of the generator may cause audible vibrations of the spokes. The bend of the semi radial spoke pattern avoids the vibrations. For retrofitting of brompton folding bikes we also offer complete wheels with semi radial spoke pattern.

wheels
  • Optimized Generator

    The claw-pole generator has its coil in the centre. Sheet metal parts are made with elaborate workmanship. Thus unrivalled low no-load lossses are achieved.

  • Pressure Compensation System

    Best possible protection against water ingress is realised by the unique pressure compensation system.

  • High-Quality Bearings

    SON hubs are long-life and maintenance-free due to high-end bearings sealed on both sides from SKF.

  • Precise Spoke Holes

    Precise spoke holes with large countersinks are a must for loadable wheels. This is why it will be sufficient to true the wheel only once.

  • Reliable Wiring

    As connections robust 4.8 mm spade connectors are used. They make a safe connection, when professionally crimped onto SON coaxial cable.