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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60
votes
6answers
106k views

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 ...
45
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11answers
32k 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?
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7answers
10k 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 ...
19
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1answer
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 ...
14
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5answers
4k 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 ...
14
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5answers
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 ...
12
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3answers
3k views

What's the verdicts 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 ...
11
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7answers
17k 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 ...
11
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3answers
731 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 ...
11
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1answer
827 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 ...
10
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2answers
2k 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%?
10
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2answers
863 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 ...
9
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3answers
21k 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 ...
9
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1answer
1k 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? ...
8
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4answers
13k 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 ...
8
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2answers
6k 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 ...
8
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2answers
13k 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, ...
8
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3answers
15k 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 ...
7
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4answers
2k 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?
7
votes
1answer
1k 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 ...
7
votes
3answers
1k 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,...
7
votes
2answers
9k 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 ...
7
votes
2answers
1k 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 ...
7
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3answers
12k 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 ...
7
votes
2answers
4k 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 ...
7
votes
1answer
427 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 ...
7
votes
2answers
361 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 ...
6
votes
3answers
2k 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 ...
6
votes
2answers
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 ...
6
votes
5answers
2k 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 ...
6
votes
3answers
1k 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 ...
6
votes
3answers
10k 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 ...
6
votes
1answer
766 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 ...
6
votes
1answer
136 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 ...
6
votes
1answer
431 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?
6
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2answers
5k 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-...
6
votes
2answers
517 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 ...
6
votes
2answers
15k 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 ...
6
votes
1answer
118 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 ...
6
votes
1answer
3k views

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

I have this internal gear hub and i try to fix it. 1st gear is ok. On 2nd and 3rd gear, especially when I run faster, the hub is not engaging properly, missing engagement sometimes. It is not problem ...
5
votes
3answers
2k views

What kind of chain to buy for internal gears?

What kind of chain should I buy if my gears are internal in a drum? I have seven gears but should I buy a one speed chain? What would happen if I would use a seven speed chain?
5
votes
2answers
1k views

Removing a rear wheel of a town bike

I'm a beginner in repairing bicycles. I have quite an old town bike. I'm trying to change the tires. I have trouble in taking out the back wheel. As you can see in the picture, there is a small piece ...
5
votes
5answers
581 views

New bicycle for commuting

I'm just retiring my old roadie and looking to buy a new bike, and am torn on what kind to buy. I cycle 34 miles per day on my commute, down roads and canal towpaths (which are bumpy and have on ...
5
votes
3answers
12k views

Alfine 11-speed - what is needed to install it? What are common problems when installing?

This is an expensive and heavy hub but I'm looking to build a new wheel and strip the rear derailleur off my old Trek MTB. It already has a fixed Ritchey carbon fork and front disc and is a nice ...
5
votes
1answer
234 views

Alternative to tuning automatic hub?

I am contemplating purchasing an automatic gear hub, namely the SRAM Automatix. One of the criticisms leveled at this hub is that it shifts up too soon. The default settings can however be adjusted if ...
5
votes
2answers
3k views

Sturmey Archer 3-Speed Hub Slipping?

I'm about to go look at a 1972 Raleigh. The seller says that the bike slips out of third gear into neutral. Is this a simple fix (e.g. a cable adjustment), or should I stay away from such a purchase?...
5
votes
1answer
735 views

What is the widest range IGH available? (and how does it compare to derailleurs)

What is the widest range (in gear-inch ratio) available on an Internal Gear Hub (IGH) without the use of a supplemental derailleur or internally geared crank (aka mountain drive)? And how does this ...
5
votes
1answer
107 views

Wear on an IGH by pre-selecting gear under power

I have a bike with an 11 speed alfine IGH in the rear wheel. It works fine, and I am comfortable riding it. When accelerating hard or sprinting for some reason, I've noticed its possible to change ...
5
votes
1answer
134 views

Is there a hub gear that can be disengaged?

When maneuvering a folded bicycle the pedal cranks turn when drive wheel rotates backwards causes difficulty. Do any hub gears have a gear disengage facility to overcome this problem?
5
votes
2answers
2k views

Shimano Nexus 7 speed IGH, high gears tight shift

I have the popular Shimano, Nexus 7 speed, internal gear hub. After removing the back wheel to replace the old tire, I've found that changing gears especially from 5 to 6 and 6 to 7 (especially the ...