Skip to main content
7 votes
Accepted

Why does Shimano Nexus 3 internal gear feel differnt on 2nd gear with and without the pin and gear set up

There is a difference between the direct gear, and the default gear: The direct gear is the one that basically locks the hub's body to the sprocket. The internal gear ratio is exactly 1, and ...
cmaster - reinstate monica's user avatar
6 votes

Installing a rear derailleur on a bike with a nexus 8 internal hub

This isn't going to be nice, because the frame doesn't have a derailleur hanger built in, or routing for the derailleur (which you'd have to hack on with clamp cable stops or something). On a ...
Batman's user avatar
  • 46.2k
5 votes
Accepted

Nexus shifter with Alfine hub

I have tried this on 2 different Alfine 8 hubs. Been running it for a couple of years and it works great. Basically you can use the Nexus twist shift with the Alfine 8 hub and it works fine.
Gurnard's user avatar
  • 297
5 votes

What are the differences between the Alfine 8 and the Nexus 8?

Another significant difference is that the nexus is supplied with a grip/twist shifter: And the Alfine has a trigger/pod shifter: Both shifters are intended to be used with the right hand. Also ...
Criggie's user avatar
  • 127k
4 votes
Accepted

Installing a rear derailleur on a bike with a nexus 8 internal hub

It depends on the spacing and shape of the dropouts. As I remember, Nexus 8 is 120mm OLD spacing on the frame. That stands for "Over Locknut Distance". It's the distance between the rear dropouts. ...
CardMechanic's user avatar
  • 2,795
4 votes

Could i break Shimano Nexus 7 with no cable attached?

Yes, that's fine. You won't damage the hub that way, although you might damage the cable attachments if they get caught in the chain, or lose some pieces. Single cable systems work by pulling and ...
Móż's user avatar
  • 23.6k
4 votes
Accepted

Shimano Nexus 3 clicking free-wheel-mechanism-like noise

It is normal - cogs of 1st gear turn slower than that from 2nd and 3rd gear, so are overrun and click into hub housing. You can "silent" it a bit by opening the hub and greasing hub housing, where the ...
krzyski's user avatar
  • 2,721
4 votes

Yellow anti-rotation washer, Shimano Nexus 3 speed with trailer?

Bit late but posting this for any future people asking this question. My LBS helped me with this. The inner nut on on the axle (between the dropout and the hub) you can remove that and replace it with ...
Jake's user avatar
  • 41
4 votes
Accepted

Yellow anti-rotation washer, Shimano Nexus 3 speed with trailer?

If the yellow washer is a anti-rotation washer - one that fits in a slotted dropout and prevents the internally geared hub from rotating with the axle - then yes it needs to be in place.
Argenti Apparatus's user avatar
4 votes

What's wrong with my shifter?

Looks like the barrel adjuster has been broken off and has floated down the shift cable, so the shifter end of the cable housing is not anchored. The shifter unit should look like this You might be ...
Argenti Apparatus's user avatar
4 votes
Accepted

Shimano Nexus 8 internal hub skip/clacking noise when under torque

There are some Nexus and Alfine bikes that have made it out into the world with a spec mismatch between the over and under style cassette joints and the shifter. The cable pull sequence works in ...
Nathan Knutson's user avatar
4 votes

Shimano Nexus 8 IGH : recommendation or changes in bike setup for high altitude ride

It sounds like your hub needs basic service and you'll likely be fine. It may just need bearing adjustment, but on a used bike it's a good idea to go a little further to make sure all is well. Take it ...
Nathan Knutson's user avatar
4 votes
Accepted

Shimano nexus 8 internal gear shift cable holder is broken. What can I do?

So, if it is a Nexus 8, the part number should be Shimano CJ-8S20. In case I am wrong, double-check the part number. It should be printed into the steel arm that the cable housing goes in to. It ...
ureris's user avatar
  • 66
3 votes
Accepted

Shimano Nexus with shift levers

I'm under the impression that Nexus 8 and Alfine 8 shifters and hubs straight interchange... but even if I'm missing something there, Shimano themselves says you can use the Alfine SL-S503 Rapidfire ...
Nathan Knutson's user avatar
3 votes
Accepted

Replacement for Shimano Nexus 7 outer casing holder

If you've got the CJNX40 or CJ8S40 bracket then you'll need the piece. So yeah, order it. Frankly, if you just swapped the cog I don't understand why the cassette joint is different. But I'm ...
jqning's user avatar
  • 2,190
3 votes
Accepted

Shimano Nexus 8 speed gear hubs: Difference between SG-C6000-8D and SG-C6001-8D?

Sheldon Brown died in 2008; C6000 came out in 2014, so you won't be getting His wisdom on that site in relation to these. 2014: https://productinfo.shimano.com/download/?path=pdfs/archive/2014-...
thelawnet's user avatar
  • 4,240
3 votes

Shimano Nexus 8 internal hub skip/clacking noise when under torque

After several suggestions and trials I think I have resolved the issue. I tried adjusting the cable tension away from the yellow linup mark. And by away I mean 0.5-1 turn of the adjuster. Also I ...
user2523745's user avatar
3 votes

Reinstall a Shimano nexus 7 wheel after puncture?

The yellow dots should be lined up when in a specific gear, which is gear 4 for a 7 speed nexus, (gear 6 for an 11 speed alfine) Generally speaking, to change tube on an IGH wheel you need to get the ...
Criggie's user avatar
  • 127k
3 votes

Why some IGH have off-center flanges?

It's a good observation. Symmetrical flange spacing and the maximized total spoke tension it provides is exactly what one wants in some applications, but not all. If you're designing a hub you have to ...
Nathan Knutson's user avatar
2 votes
Accepted

Shimano Nexus 3 (SG-3C41) 2 and 3 gear problem - Ring Gear Unit Repair

After a bit of thinking I filed off cogs from the outside. So far so good, hub presents good enegagement at all gears. After few weeks it still runs good. Left is "fixed", right shown for comparison. ...
krzyski's user avatar
  • 2,721
2 votes

Combine Nexus 3 Hub with Torpedo 3 gear shifter?

The first response above that referred to the Crib Sheet was not entirely correct. One needs to compare incremental steps from that table. According to that, the 3rd gear pull appears 1.1mm too short (...
Dmitry Alergant's user avatar
2 votes

Steel rims responsible for slicing tubes?

You had the tyres inflated to their maximum pressure and, in a comment, you say you'd left the bike outside in the summer sun. I'd say it's very likely that the tyres got hot, which increased their ...
David Richerby's user avatar
2 votes
Accepted

Replacing broken nexus 7 gear hub with second hand one

I took my bicycle to a local bicycle shop. They unfortunately told me that it should jump back to it's original position, and that opening the hub is the only way to find out what is wrong. The good ...
Kasper's user avatar
  • 163
2 votes

What are the differences between the Alfine 8 and the Nexus 8?

To quote Peter White Cycles: The main difference between Nexus and Alfine groups is that Alfine is designed for disc brakes, and Nexus is designed for roller brakes. Alfine hubs use regular ...
Grigory Rechistov's user avatar
2 votes
Accepted

Can I replace my Shimano Nexus 7 with a Nexus 8 hub?

Depends what roller brake model you have. Looking at the Shimano 2015-1026 component line up document you can see what components work together. (Very useful current line up web pages here, with ...
Argenti Apparatus's user avatar
2 votes

What trigger shifters would be compatible with my Nexus-8 internal gear hub?

Shimano internal gear hubs require their own shifters. They are not compatible with derailleur shifters. According to the 2017-18 line up chart, the SL-S503 trigger or SL-C6000-8 'gripshifters' are ...
Argenti Apparatus's user avatar
2 votes

Shimano Nexus with shift levers

The problem here is the IGHs from shimano don't use a linear activation - you can't use any old shifter. The amount of cable pulled between each gear are not the same. So you need an Alfine or Nexus ...
Criggie's user avatar
  • 127k
2 votes

Greasing a roller brake in a difficult spot!

According to this answer in reply to a question about what grease to use with Shimano roller bakes, it's important to use the proper Shimano roller brake grease and to apply it into the hole properly. ...
Argenti Apparatus's user avatar
2 votes

Bridgestone Albelt

I'll be getting a set of 622 rims laced up so I can use locally available tires. (currently has well worn 27 x 1 3/8 on 630 rims). You'll need to make sure your brake calipers have sufficient reach, ...
Argenti Apparatus's user avatar
2 votes

What are the differences between new Nexus 7 speed hub (SG-C3001-7), versus old (SG-C3000-7)?

I don't know what the actual changes are, but the newer C3001 hubs are now listed by Shimano as being e-bike approved, which implies a ratcheting/drive mechanism that's more suited to the higher force ...
Nathan Knutson's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible