Über Shimano Nexus und Alfine Komponenten: Unterschied zwischen den Versionen

and how badly the brakes worked in the rain...

The Shimano Nexus group combines the best features of your old 3 speed, and eliminates the worst, thanks to modern materials and technology.

For details of the gearing of the Nexus and Alfine hubs, please consult the

On-line Gear Calculator for Internally-Geared Hubs

Nexus internal gear systems also incorporate all-weather braking systems. They are available in two forms, though not all in every number of speeds:

Both of these systems provide quite a good rear brake, which works as well in rain and snow as it does on a sunny spring afternoon.

Nexus Technical Page

In some cases, it is possible to convert an existing bicycle to the use of a Nexus hub. I have a very nice 1970's Raleigh Competition racing frame which I have converted into a Nexus 7-speed.

Nexus hubs have a drop-out spacing between 127 and 135 mm. Older bicycles are typically narrower than that. In the case of steel (Cromoly) frames, it is usually possible to spread the rear triangle to the needed width. Any good bicycle mechanic will be able to do this, or you can do it yourself. If you leave off the Rollerbrake and use a thinner cone lockwasher on the left side, you can re-space a Nexus 7- or 8-speed hub to about 126 mm. Similarly, if your frame is made for 135 mm spacing, you can add spacers to the axle to fill in the gap.

==Quelle==