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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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61 votes
6 answers
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What are the pros and cons of internal gears?

I've had my hybrid 24-speed for a bit over 3 years now, and just last weekend, when looking for a bike for my wife, discovered internal gears. Suffice to say it blew my mind when I saw 7-speed ...
drfrogsplat's user avatar
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?
Johan Dahlin's user avatar
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26 votes
7 answers
14k views

How many miles and/or commuting seasons will a modern internal geared hub last?

I've been considering drive trains on a utility / commuter bike. The Shimano Alfine internal 8-speed hub is on several bikes I've liked. I've also heard good things about SRAM and Nexus hubs. I ride ...
bmike's user avatar
  • 454
19 votes
1 answer
2k views

Relative efficiency of different commute bike setups

My interest is in long distance commuting (e.g. more than 50 km a day) and the relative efficiencies of different commute bike setups (e.g. drop bars vs flat bars, fenders vs no fenders, panniers vs ...
Rider_X's user avatar
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15 votes
5 answers
3k views

Mystery grease source - Alfine 11, Gates Belt drive, Shimano bottom bracket

I have a 2012 Spot Acme and it's been great, everything is still smooth and working well into its second winter. However I picked it up to bring it into the office a week ago and noticed grease all ...
user avatar
14 votes
5 answers
5k views

Why not have the gears inside the bottom bracket?

Looking into an IGH it seems the biggest disadvantage is having a huge amount of rotating mass. I've seen one handmade bike where the IGH sits above the bracket, inside a carbon fibre shroud around ...
user avatar
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 ...
NoBugs's user avatar
  • 461
12 votes
7 answers
29k views

How to prevent Alfine 8 from "skipping"/"slipping under load?

I bought a nice belt-drive bike with an Alfine 8 hub. While I love everything about the belt, the Alfine hub gives me grief: under high(er) torque - think fast acceleration from a stop at a light - it ...
SebastianR's user avatar
11 votes
1 answer
1k views

Are internally-geared hubs UCI legal?

Are internally-geared hubs UCI legal? I am assuming no one would ever use one for a race since durability and reliability matter less in a pro race than weight and efficiency, but I am also assuming ...
kloddant's user avatar
  • 485
11 votes
3 answers
766 views

How do I tell if my cog needs replacing?

Two answers to this question gather that after 14335 km (8907 mi) of cycling with a single chain, the cog is at risk of being damaged. I haven't noticed anything unusual apart from the chain being ...
gerrit's user avatar
  • 3,967
11 votes
3 answers
26k views

Apart from the size, is there any difference between chains for derailleurs or for single-speed / internally geared hubs?

I might need to replace my bicycle chain (see this question). The store where I've bought components before (cyclecomponents.com) seems to be entirely marketed to derailleurs, and I have an internally ...
gerrit's user avatar
  • 3,967
11 votes
2 answers
1k views

Internally-geared hub and chain case: running away from maintenance chores and grit damage

First off, the context of my question is 80% urban commuting and 20% weekend road trips of up to 70km, with a bit of casual trail riding mixed in. I ride my bicycle for transport and I value minimal ...
Leeroy's user avatar
  • 483
11 votes
1 answer
999 views

How easy (or hard) is to move a Rohloff speedhub from one bicycle to another?

I have two 26" bicycles and I am considering investing in a super expensive Rohloff speedhub. I would like to know if it would be possible to easily move the wheel with the rohloff hub from one bike ...
Dakatine's user avatar
  • 443
10 votes
2 answers
3k views

Why haven't Shimano or SRAM internal hubs had as many gears (or as much range) as Rohloff?

What limitations cause Shimano to stop at 11 gears and 409% overall ratio, whereas Rohloff can cram in 14 gears and 526%?
joseph_morris's user avatar
9 votes
4 answers
3k views

How am I able to simulate gears on my single speed?

Sometime ago, I bought a cheap bike from eBay for my daily commutes which turned out to be a single-speed bike. It works fine but I am curious as to how I am able to have a shifter that simulates gear ...
Can Sürmeli's user avatar
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 ...
Reid's user avatar
  • 1,538
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 ...
Ben Hutchison's user avatar
9 votes
2 answers
28k views

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

I'm shopping for a new bike and I have a choice between one with the Alfine 8 and the other with the Nexus 8. They seem to be pretty similar, but from what I could gather from forums here and there, ...
kokito's user avatar
  • 215
9 votes
1 answer
2k views

What does it take to damage an internally geared hub?

What behavior can easily damage an internally geared hub (Shimano Nexus or Alfine for example)? can one jump off high (say 50cm) curbs? can it be damaged by shifting gears under too much torque? ...
Ivan's user avatar
  • 193
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 ...
user109527's user avatar
8 votes
4 answers
19k views

Internal gear hub maintenance

I have a Muji utility bicycle with a 3-speed internal gear hub which I got second hand around 5 years ago. The LBS which I bought the bike from has since closed down and I haven't managed to find ...
huijing's user avatar
  • 211
8 votes
2 answers
7k views

How is the riding experience of a Rohloff hub different than derailleur gears?

I'm considering a Rohloff hub and am wondering what the day-to-day riding experience would be like compared to my existing derailleur setup. There are some obvious things (e.g. don't have to be moving ...
Reid's user avatar
  • 1,538
8 votes
1 answer
2k views

Have they ever made a bicycle with in-hub gears both at the crank and wheel?

I've got a hybrid bike with an 8 speed in-hub gear. I chose it because I didn't want to worry about the chain coming off or adjusting the derailleurs. It's been pretty bullet proof and given me no ...
MeltingDog's user avatar
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 ...
Sebastiaan's user avatar
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 ...
user2523745's user avatar
8 votes
3 answers
19k views

Can oil/grease damage tires?

I've noticed a small puddle of light oil beneath the rear wheel of our Rohloff-equipped tandem. I'm told that a small amount of leakage is normal and I'm not worried about that. The issue is that a ...
James Bradbury's user avatar
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 ...
OverTheRainbow's user avatar
7 votes
4 answers
3k views

Comparing gear ratios on different bike types

How can I compare gear ratios on different wheel sizes? How can I compare gear ratios on MTB with tracking bikes with bigger wheels? How can I compare gear ratios with gear hubs?
Hubidubi's user avatar
  • 233
7 votes
3 answers
3k views

Switching from a dérailleur to a gear hub

I'm upgrading an old bike with a five speed dérailleur system which I'm trying to convert to use a three speed gearhub from Shimano. I have assembled the wheel, I know how to set up the gearhub itself,...
andrewsh's user avatar
  • 227
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 ...
Michael Altfield's user avatar
7 votes
2 answers
3k views

Anti-rotation washers (non-turn) washers in non-parallel dropouts?

I have a Shimano Alfine 11 Interally-geared hub and am fitting it to an "M5 559 shockproof" recumbent. The wheel is built and true and runs nicely. However I have a problem with the anti-rotation ...
Criggie's user avatar
  • 127k
7 votes
3 answers
16k views

How to replace a Sturmey Archer's cable?

I would like to replace the cable of a Sturmey Archer hub, but can't find a way to disassemble the old cable without destroying it, and it puzzles me how to insert the new cable. To better explain, I ...
jackJoe's user avatar
  • 1,437
7 votes
2 answers
1k views

Internal friction in new Alfine 11 S7001-11

I just bought a new rear wheel with an Alfine S7001-11 internal-gear hub. Before installing it, I realized that it apparently has heavy internal friction. When the wheel is set in motion, it comes to ...
TheShunk's user avatar
7 votes
2 answers
6k views

Stuck gear hub on the way into a gear on an internal geared hub

My bike recently got stolen :( therefore I have borrowed a bike with an internal gear hub from my stepdad, which was working fine until recently when the pedals just wouldn't turn whenever I switched ...
iBoughtWinrar's user avatar
7 votes
1 answer
630 views

Torpedo duomatic stuck in one gear because of too much grease. How to lubricate correctly?

I have a Speedo Duomatic that has been stuck in one gear the last 10 years. Probably because of too much lube in the wrong places. Now is the time to fix this. Everything is clean and I'm ready to put ...
PetaspeedBeaver's user avatar
7 votes
2 answers
1k views

Are there penny-farthings with an internally geared hub?

Has someone built a penny-farthing (high-wheel/ordinal) with a gearbox in the hub? If not, are there obvious reasons one cannot do such a thing? (I recognize this is silly, but that never stopped ...
Michael come lately's user avatar
7 votes
2 answers
16k views

What do I need to research to switch to an internally geared hub?

I have a bike that I rather like, but it's geared entirely for high-speed road bike type work. It's fantastic on the flat areas of the route that I take every day, but I also have a couple of serious ...
Savanni D'Gerinel's user avatar
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, ...
Tomblarom's user avatar
  • 170
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.
L.Dutch's user avatar
  • 7,151
6 votes
3 answers
11k views

Can a Shimano Alfine 8 speed be reduced to 120mm hub spacing?

I would like to buy a single-speed bike that happens to have 120mm hub spacing, and add the Shimano Alfine 8-speed hub. That hub, however, seems to have a 135mm spacing. Can the 8-speed Alfine hub be ...
Jacob's user avatar
  • 163
6 votes
2 answers
6k views

Pros and cons of gears in bottom bracket vs. rear hub? [duplicate]

Since 6 years, I am the happy user of a bicycle with a Rohloff internal hub gear. German quality squeezing 14 gears and a 526% gear range into the rear hub. Less known is the newer and equally ...
gerrit's user avatar
  • 3,967
6 votes
5 answers
3k views

Is it possible to put a chain on without removing the rear wheel?

I have a bike with a single chainring up front and an internal hub and a coaster brake in the rear. (For those unfamiliar with this setup, it's essentially like having a single-speed bike in that the ...
Goodbye Stack Exchange's user avatar
6 votes
3 answers
15k views

Single speed to multi-speed conversion with internal gear hub

I currently have a single speed 52m Crew District. I got it as a commuter once I got moved closer my workplace. I live in a fairly hilly area and I am thoroughly missing the option to downshift and ...
Mario's user avatar
  • 61
6 votes
3 answers
2k views

Does a Sturmey Archer 2 speed kick shift hub let you backpedal?

Does a Sturmey Archer 2 speed kick shift hub let you backpedal? A backpedal / coaster brake changes riding technique so much it drives me nuts; I am wondering if you can backpedal at least enough to ...
Andrew Wagner's user avatar
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 ...
Robert Atkins's user avatar
6 votes
1 answer
974 views

Nexus hub keeps getting misaligned

I have a nexus 8-speed internal hub on a Civia Kingfield bike. It keeps getting misaligned -- the dots on the bottom don't line up. In the past I have successfully adjusted it using the barrel ...
Pedro's user avatar
  • 83
6 votes
1 answer
694 views

Impossible to disassemble a Sturmey Archer 3 speed

I have a relatively recent Sturmey Archer IGH 3 speed (CS-RK3) that has a broken part in it (HSA119 Gear Ring Pawl to be precise). Unfortunately, I am unable to unscrew the HSA824 F30 Ball Ring to ...
jollie_fin's user avatar
6 votes
1 answer
546 views

How do internal hubs work

This question is just one of curiosity. I have a hard time visualizing this. How do internal hubs work? Does anyone have a cross cut image that is easy to understand?
Rick's user avatar
  • 429
6 votes
2 answers
6k views

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

I have assembled a bike with new Shimano Nexus 3 (SG-3C41) internally geared hub. In the lowest gear the hub is silent. However in the middle and highest gear it makes a clicking noise similar to free-...
dhill's user avatar
  • 497
6 votes
2 answers
681 views

Identify this hub (similar to a Sturmey Archer rear internal gear hub w/ drum brake)

I recently came across the auction of an old Gazelle city bike. It is equipped with rear internal gear hub with drum brake which looks like Sturmey Archer 3 gear hub. But this hub has two shifting ...
krzyski's user avatar
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