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Questions tagged [internally-geared-hub]

An internally-geared hub is a gearing system contained within the rear-wheel hub of a bicycle. All the components are contained within the sealed hub, making them less susceptible to the elements when riding. They are generally regarded as lower maintenance than dérailleur gears. Usually they will have a somewhat narrower range of gears, and larger steps between the gear ratios.

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Repairing broken Shimano Nexus 8 hub

I have a Cube Travel Pro, which comes with a belt drive and a Shimano Nexus 8 hub, model SG-C6001-8D. The bicycle is a bit over a year old and used for city commuting in all kinds of weather. Has ...
2 votes
0 answers
28 views

How can I make my vintage sturmey Archer AW hub take a 3 speed cassette? (Minimal metal work, none if possible)

So to make answering my question easier, I'll start with the goals, I wish to be able to attach a 3 speed cassette and tensioner (relatively low cost) to my vintage Sturmey Archer AW hub so i can have ...
3 votes
2 answers
368 views

Huffy Sea Pines from the late 70's.The hub will slip

What should I do when I hit bumps or put on the pedals and it will switch gears momentarily. It is an Internally Geared Hub. The bicycle looks similar to this (via Reddit)
2 votes
0 answers
25 views

7 speed hub whistles

My 7 speed Nexus internal axle begins to whistle as speed increases, but noise stops when I slow down. Has nothing to do with the pedal crank.
1 vote
0 answers
29 views

Shimano Alifine 8 IGH yellow dots will NOT line up

With shifter in 4th gear, per instructions, the upper yellow dot is about 3/16" ahead (clockwise) of the lower yellow dot. Whether I adjust the barrel connector (at the shifter) to one extreme or ...
8 votes
1 answer
196 views

why do I have a lot of water in my internally geared hub?

Lately my gears would stick a bit and i started to hear a grinding noise. While taking the rear wheel off I noticed that the sprocket felt like a ball bearing was overtightened, having quite some ...
3 votes
1 answer
60 views

Is play on the Schlumpf Mountain Drive chainring a problem? How to fix?

There is forward & backward play on my Schlumpf Mountain Drive chainring. Is this a problem? If so, how do I fix it? When I hold the crank steady, there is back-and-forth play on the chainring in ...
7 votes
1 answer
652 views

Why can't the Schlumpf Mountain Drive be used along with the 14-speed Rohloff?

Why is it "not allowed" to use the 14-speed Rohloff in combination with the Schlumpf Mountain Drive? According to Function-Schlumpf-Mountain-Drive.pdf: Please notice: the 14-speed Rohloff ...
0 votes
0 answers
31 views

Internal gear hub - missing parts

I've recently bought a wheel with Shimano Nexus SG-C3001-7R hub. There are some parts missing on it, including sprocket: I already have the compatible shifter (SL-7S50), but it ends with just bare ...
8 votes
2 answers
7k views

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

Intro Just 2 months ago, I bought a new Cube Hyde Pro 2020 bicycle with belt drive (Gates, rear cassette out of metal, CDC with 22 teeth) Shimano Nexus 8 internal hub (model SG-C6001-8D). I mostly ...
4 votes
1 answer
222 views

CNC'ing Strong Hub Shell (Kindernay Swap Cage)

The Kindernay Swap Cage is a removeable hub shell that is a bit delicate for loaded touring. The HD (Heavy Duty) Swap Cage never made it to market. I'd like to make one that's near indestructable. It ...
4 votes
1 answer
204 views

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

I have a Cube Hyde Pro equipped with a Shimano Nexus 8. The cable holding place is broken. As you can see in the image below: As a temporary solution I glued it with a cyanoacrylate glue but it is not ...
13 votes
4 answers
5k views

What's the verdict on hub-less circle bicycle wheels? Sturdy and "maintenance-free"?

You've probably seen these weird hub-less bicycles, the Reevo and the Cyclotron; while they "look cool" I wonder if anyone has long term maintenance experience on these. Considering that ...
6 votes
1 answer
324 views

Shimano Alfine 11 hub axle unit assembly

I have a bike with a Shimano Alfine 11 hub. While overhauling the hub, I accidentally took off the block on the drive side of the hub axle unit: Now I have half a dozen parts I have no idea how to ...
6 votes
2 answers
2k views

Is this a common failure mode for Nuvinci/Enviolo hubs? How do I fix it?

The cables coming out of the twist grip for my Nuvinci N380 went "sproing" the other day and I pedalled home frantically in low gear. This isn't the first time this has happened. On closer ...
3 votes
2 answers
134 views

Do I need a specific Sturmey Archer indicator chain/rod and cable?

Like the title says, I have an old refurbished bike from the 50's I want to get working again. It has a Sturmey Archer 3 speed shifter and internal gear hub, and that's about all I know about it. It ...
3 votes
4 answers
584 views

How do you keep disc brakes on internal hubs aligned with the caliper?

I'm contemplating building up a new commuter bike, and I'd like internal gearing and disc brakes. Internal gears require horizontal dropouts. Disc brake rotors however must be aligned with the caliper ...
1 vote
1 answer
59 views

From gearing range to gears ratio

been looking at internal gears and I have a question. When I looked at Alfine 11, it shows both the ratio of every gear, for example, "Gear ratio 1: 0.527", and also the total range. However,...
49 votes
11 answers
42k views

What's the efficiency of hub gears compared to derailleurs?

What's the efficiency of hub gears compared to derailleurs? I know that hub gears are not as efficient. Apart from being heavier, how much will I lose in performance if I use hub gears?
0 votes
0 answers
179 views

Shimano Nexus 8 clicking noise

The hub started making a clicking or crackling sound whenever the wheel turned (whether pedaling or not). After I let it sit for an hour then rode it again, the sound had become a grinding noise that ...
2 votes
1 answer
885 views

Why is my Nexus 7 "grinding" when coasting?

I have a brand new Nexus 7-speed IGH which is making a horrible grinding noise when coasting. It also "sticks" a little when backpedaling (i.e. doesn't immediately freewheel; I don't know ...
2 votes
1 answer
132 views

Does the rear gear hub on a 6 speed Brompton needs regular servicing? How do I know when it needs replacing?

I got my Brompton second hand. I believe it was originally manufactured in 2011 and I strongly suspect it's never been properly serviced - most teeth are pretty worn and the chain is sitting on circa ...
0 votes
1 answer
443 views

135mm Hub in 141mm Boost QR

I may be barking up the wrong tree, but I have the following project in mind. I'm looking to buy a bike (Giant Fathom E+EX) that is listed as having 141 QR Boost drop-outs in the rear. I want to ...
1 vote
1 answer
68 views

How to know if hub-gears provide fitting transmissions?

I want to get a decent bike for my daily trip to work and other trips. My daily trip to work is around 15km in total and the terrain is quite flat (except for a small hill and a few underpasses). The ...
7 votes
2 answers
3k views

Torque for Shimano Alfine 8/11 Speed Internally Geared Hub Axle Nuts?

I Googled for this, but couldn't find the proper torque (in Newton-meters) for Shimano Alfine 8- and 11-speed IGH axle nuts. I'm putting the hub back on the bike after removing the rear wheel. I'm no ...
1 vote
1 answer
155 views

Front chainring and Rohloff IGH sprocket not exactly aligned

I ride a Bike Friday Pocket Llama with a Rohloff internal gear hub. I noticed that the front chainring and the rear sprocket are not exactly aligned. As the Rohloff internal gear hub will stay the ...
1 vote
1 answer
106 views

How do you mod an internally geared hub to permanently run in one gear?

This is nowhere near a priority for me. But I fixed my first coaster brake, I'm high off my success and I want to learn more.
5 votes
2 answers
1k views

Opening a Shimano Alfine 8 hub (large dust cover)

I’m dismantling my Shimano Alfine 8 hub to service the internals. I’m at the stage in the photograph but can’t turn the large black plastic dust cover, with <-tighten loosen-> on it. The hub has ...
3 votes
1 answer
968 views

Shimano Nexus 8-speed gear unstable on hills. Struggling to calibrate

I have Shimano Nexus 8-speed internal gears on my bike. They have a subtle problem that has been getting worse over time. Any time the pedals are turning with some resistance on a hill, the gears keep ...
2 votes
2 answers
712 views

Sturmey Archer 3-speed hub adjustment

I am going crazy here. I have a SA SRF3 mounted on a 16 inch wheel Dahon bike I bought second hand. The bike needed some love and I managed to put it to my liking. Unfortunately I reached a dead end ...
6 votes
7 answers
4k views

Feasibility of coupling internal hub gear and derailleur

Price considerations apart, would it make sense to install together an internal hub gear and a derailleur? I was thinking of it as a viable way to avoid having the front gears.
2 votes
1 answer
158 views

What tool(s) are required to remove a Rohloff sprocket?

To remove a Rohloff sprocket, I need this Sprocket Remover Tool: Do I also need the lock ring tool? If not, what is the lock ring tool required for?
1 vote
1 answer
228 views

Shifter/IGH stuck on 3rd gear on Shimano Nexus 7-speed

There are many similar questions on SE, but none I think are the same. This morning, commuting on my bike with Shimano Nexus 7, I suddenly realised I can't shift anymore. I have a grip shifter, it ...
2 votes
3 answers
1k views

Shimano Alfine 8, properly adjusted, doesn't downshift from 5 to 4

My bike is equipped with a Shimano Alfine 8 (SG-S7001-8) hub. It runs smoothly without significant noises and shifts up and down easily, except down from 5 to 4. When I try to downshift from 5 to 4, ...
4 votes
2 answers
9k views

What sort of oil/lube is "Shimano Internal Hub Maintenance Oil"?

https://www.amazon.com/Shimano-Internal-Hub-Maintenance-Oil/dp/B00O58QCQY I know what it is for. But what is it composed of?
2 votes
1 answer
329 views

Wobbly back wheel (Shimano Nexus SG-8C31 internally geared hub)

I am new here and have little experience in repairing bicycles. I have an about 15-year-old bicycle with an 8 gear Shimano Nexus internally geared hub (SG-8C31). Unfortunately, the back wheel is not ...
2 votes
0 answers
128 views

U.S. source for Alfine 11 oil for oil changes?

Yesterday I changed the oil in my Alfine 11-speed hub. I bought the 50ml bottle of SG-S700 from an eBay seller in Florida, the last one in the site's search results originating from the United States. ...
5 votes
2 answers
17k views

How to maintain a Shimano Nexus gear hub?

I have a bicycle with Shimano hub gears (Nexus 7 speed). I would like to know what type of maintenance it needs, besides the normal tuning. I believe it needs some greasing, but I have no idea how to ...
3 votes
1 answer
1k views

Which replacement sprocket and chain ring should I get for a Shimano Alfine 8?

I have a Charge Mixer bike with, I believe, a Shimano Alfine Inter-8 internal hub gear system. Recently the chain started to creak so I decided to change it. I bought a KMC X9 chain as Shimano appear ...
1 vote
1 answer
1k views

Shimano nexus 3-speed hub gear, yellow dot does not move when adjusting

I have a bike with a Nexus 3 hub gear. Yesterday the shifting got out of whack, when set to gear 2, it was actually in gear 1, gear 3 was 2, and so on. I looked up how to adjust it, and found that I ...
7 votes
1 answer
1k views

Alternative to 5-speed twist shifter for Shimano Nexus 5-speed IGH?

I'm going to buy a SG-C7000-5D / SG-C7050-5D and don't want to use the twist shifter. Unfortunately there aren't many 5-speed flat bar shifters around theses days. I've searched for alfine shifters, ...
1 vote
1 answer
375 views

Bottom bracket replacement twice during 5000km

I have a bike with CDN gates belt and alfine 11 gear hub. I had to replace bottom bracket twice during 5000km is that normal? It uses BSA 68-120mm thun zumba jis: https://www.google.com/search?q=BB+...
9 votes
3 answers
3k views

Is it possible to use road-style brifters with an internal gear hub?

I have a touring bike with road-style Shimano brifters, which I love. I'm also very intrigued by internal-gear hubs, but these hubs seem to focus on rotary or push-button shifters. Is it possible to ...
4 votes
2 answers
683 views

Removing Nexus 8-speed IGH from hub shell

see update at the bottom I'm trying to remove my Nexus SG-C6001-8D from its hub shell to grease it. Sadly Shimano's documentation doesn't cover the process of extracting the internals from the hub ...
9 votes
2 answers
11k views

Do Shimano Nexus hubs lose efficiency as they get older?

I ride a 5 year old commuter bike with a Shimano Nexus 8 internal hub gear, that's done about 20,000km. I'm not sure if I'm imagining it, but it seems like my bike has lost a considerable amount of ...
2 votes
0 answers
227 views

Does (or has in the past) an adaptor existed to mount a disc rotor to a Shimano Rollerbrake type hub?

I have acquired a Nexus 8speed rear hub. It’s a good one and I’d love to use it. However, it has been set up to use rim brakes and under the plastic cover is the interface to mount a rollerbrake. Does ...
2 votes
1 answer
383 views

would a sturmey archer trigger shifter work on an shimano 333 3 speed hub?

Hi everyone i have an NOS shimano 333 3 speed hub set which was given down to me by my friend,all seems to be intact but the only thing missing is the shifter,but i do happen to have a few SA trigger ...
2 votes
0 answers
155 views

Why is my Sturmey-Archer 5-speed hub sticking between 1st and 2nd gear?

I've been trying to set up a Sturmey-Archer X-RD5 (W) hub to no avail. I can get it moving between 2nd and 5th gears just fine, but as soon as I pull it into 1st the indicator rod (and I assume ...
5 votes
1 answer
599 views

Gates Belt Drive+Rohloff - What rear sprocket do I need to help me get up hills and mountains better?

Hi I'm new here. I'm the proud owner of a Koga Worldtraveller Signature 2.0 with Rohloff and Gates belt. I have a 50t front chainring and a 19t rear cog with a 120t beltdrive plus Schwalbe Almotion 28&...
8 votes
2 answers
1k views

Two ill-repair bikes into one?

I have started a new job, cycling roughly 17 miles (or 27 km) each day into work. Previously, it was a very short ride (less than 2 km) into university. I have two bikes that are currently falling ...

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