Shimano Nexus und Alfine Acht-Gang-Naben: Unterschied zwischen den Versionen

[[Datei:Nexusvsalfineaxleunitsm.jpg|right|Nexus und Alfine Achsen]]Während die Achsaufbauten zum größten Teil identisch sind, ist ein Abschnitt der linken Seite der Alfineachse (s. Bild rechts) wie auch bei einigen anderen, deutlich dicker, um den Biegekräften durch die optionale [[Scheibenbremse]] zu widerstehen. Der linkssseite Lagerkonusder Alfine wird auf den dickeren Teil der Achse geschraubt. Die Alfine benötigt einen größeren [[Mutternabstand]] als die Nexus Nabe ohne [[Rollebrake]]. Es gibt eine größere Zahl an Teilenummern für linksseitige Lagerkonen. Eine freie Zusammenstellung der Teile ist Dein eigenes Risiko.

Shimano made information sheets available individually for earlier hubs. The tables below list hubs in each series individually in order from newest to oldest, describing their differences, linking to information from various sources. The right-hand column holds links to available information. Dealer's manuals with information commont to many hubs areomitted. Shimano has provided rebuilding instructions for only one model, though others are similar.

To find which parts from newer models fit older ones, open the search function in your browser to look on this page for instances of an older hub's model number. Compatibility may cascade to yet another hub or hubs. At the small-parts level, there is much more interchangeability than is shown. Parts for some older models may no longer be available.

There is some interchangeability between Alfine and Nexus models. When a model number in the interchangeability column is in italics, the entire internal assembly is compatible.

* [https://web.archive.org/web/20130818045722/http://www.shimano.com/publish/content/global_cycle/en/us/index/tech_support/tech_tips.download.-Par50lparsys-0016-downloadFile.html/09%29%20Differences%20Between%20Hubs.pdf Unterschiede zwiechen Alfine und Nexus Naben aus dem jahr 2013 (englisch/PDF)].  

==Alfine 8-Gang Scheibenbremsen- und bremsenlose Modelle==

==Nexus 8-Gang Freilauf- und Rollerbrake-Modelle==

==Nexus 8-Gang Rücktrittbremsenmodelle==

In some cases, it is possible to convert an existing bicycle to the use of a Nexus hub.

I converted my early '70s Raleigh International, using a Nexus 8-speed.

I like the Nexus 8-speed a lot better than the 7-speed version.

 

Ideally, the frame should have a dropout spacing of 127 to 135 mm to fit one of the Nexus hubs. 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. Alfine hubs require 135mm spacing.

 

If you leave off the Rollerbrake ®, you can get the spacing down to about 126 mm, as already mentioned. This is what I did on my Nexus bike. The Rollerbrake ® is a separate module, and when you buy the hub it is not even installed. (The brake unit would get in the way of fitting the spokes through the hub flange, so it has to be installed after the wheel has been built.)