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Technische Informationen zu Nexus und Alfine Drei-, Vier-, Sieben-, Acht- und Elf-Gang-Naben: Unterschied zwischen den Versionen

→‎Montage der Schalteinheit: Übersetzungsanfang und Bilder hinzu
(→‎Siehe auch: ergänzt)
(→‎Montage der Schalteinheit: Übersetzungsanfang und Bilder hinzu)
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==Montage der Schalteinheit==
==Montage der Schalteinheit==
Die meisten Nexus Dreigang-Naben werden mittels eines [[Umlenkhebel]]s und eine [[Stößelstange]] geschaltet.


Most Nexus 3-speed hubs are shifted using a bellcrank and pushrod, as described in the article about the 3-speed hubs.
Die meisten Nexus- und Alfinenaben mit vier oder mehr [[Gänge]]n (auch ein einziges Dreigang Modell) haben einen [[Schaltarm]]. Das ist eine Art Umlenkrolle, die zwischen ndem rechten Ausfallende und dem Ritzel konzentrisch zur [[Achse]] sitzt. Das ist eine geschützte Stelle, die dafür sorgt, dass die Kettenlinie recht weit innen liegt im Verhältnis zum [[Mutternabstand]]. Manche Naben haben elektrische ([[Di2]]) Schaltung, für die eine Motoreinheit Anstelle des Schaltarms montiert wird.
 
;Siehe auch
* [[Shimano Dreigang-Naben]]


Most Nexus and Alfine hubs with 4 or more speeds, and one 3-speed model, use a "cassette joint", a pulley between the right dropout and the sprocket, concentric with the axle -- a protected location which also moves the sprocket inboard, resulting in a conservative chainline despite these hubs' large overlocknut dimension. Some hubs use electrical ("Di2") shifting, with a motor unit between the right-side dropout and sprocket.
===Schaltarm===
===Schaltarm===


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The photo below shows cassette joint parts for a 5 or 8-speed hub, from left to right, the driver cap, cassette joint and cassette joint fixing ring. The 11-speed hub also uses a driver cap; the 3, 4 and 7-speed hubs use none.
The photo below shows cassette joint parts for a 5 or 8-speed hub, from left to right, the driver cap, cassette joint and cassette joint fixing ring. The 11-speed hub also uses a driver cap; the 3, 4 and 7-speed hubs use none.


casette joint parts for 8-speed hub
[[Datei:Cassette-joint-parts.jpg|center|Einzelteile des Schaltarms für eine Achtgang-Nabe]]


Do not lubricate the cassette joint. That makes it collect dirt and stick.  The two parts easily pop apart for cleaning.  No need to remove the little screws.  Just gently pull. That makes it easy to clean the inside of the adjustment mark view window. (Thanks to Aaron Goss for this info!)
Do not lubricate the cassette joint. That makes it collect dirt and stick.  The two parts easily pop apart for cleaning.  No need to remove the little screws.  Just gently pull. That makes it easy to clean the inside of the adjustment mark view window. (Thanks to Aaron Goss for this info!)
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With most of the hubs which use a cassette joint, the cable is tightest in top gear; the 11-speed hubs and the SG-7000 and SM-7000 8-speed Alfine hubs pull the cable tightest in the lowest gear. The cable engages the pulley at the top instead of the bottom with these hubs, and the cassette joint looks like the one in the picture below. Other than that, installation is similar to that of other cassette joints. The fixing ring turns clockwise to lock, same as with the others. Shifters are compatible with both types of cassette joints except that indications will read backwards 8 to 1 instread of 8 to 1 if you mix and match.
With most of the hubs which use a cassette joint, the cable is tightest in top gear; the 11-speed hubs and the SG-7000 and SM-7000 8-speed Alfine hubs pull the cable tightest in the lowest gear. The cable engages the pulley at the top instead of the bottom with these hubs, and the cassette joint looks like the one in the picture below. Other than that, installation is similar to that of other cassette joints. The fixing ring turns clockwise to lock, same as with the others. Shifters are compatible with both types of cassette joints except that indications will read backwards 8 to 1 instread of 8 to 1 if you mix and match.


Alfine SG-7000 and SM-700 cassette joint
[[Datei:Alfine-cassette-joint.jpg|center|Alfine SG-7000 und SM-700 Schaltarm]]


   
   
The photos below show the steps in installation of the cassette joint on an 8-speed hub.
The photos below show the steps in installation of the cassette joint on an 8-speed hub.


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securing the motor unit
securing the motor unit
==Zugmontage==
==Zugmontage==


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