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.

Filter by
Sorted by
Tagged with
45
votes
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?
14
votes
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 ...
25
votes
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 ...
4
votes
3answers
2k views

Shorten or replace bicycle chain?

The chain on my internally geared hub bicycle is now too long even when the rear wheel is entirely pulled back. How do I tell whether it's sufficient to shorten the chain by removing some links, or if ...
4
votes
1answer
8k views

Sachs Torpedo 3 gear vs. SRAM T3 vs. SRAM i-motion 3 gear

Various webshops use the following names: Sachs Torpedo 3 gear SRAM T3 SRAM i-motion 3 gear There are many inconsistencies in what exactly they call them, and for a long time I thought it was ...
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 ...
3
votes
1answer
197 views

Does a Tern Cargo Rack fit on a Bike Friday NWT (whilst accomodating Ortlieb Backroller Classic Panniers)?

I was wondering, whether a Tern Cargo Rack fits on a Bike Friday NWT with a Sram Dual Drive 27 whilst accommodating Ortlieb Backroller Classic Panniers. The problem with rear racks, the Sram Dual ...
2
votes
3answers
402 views

Will my rear wheel with an internally-geared hub shift forward when pedalling steep uphill?

(I'm not a bicycle mechanic. Please excuse the incorrect terminology.) I would like to have an internal hub gear (Shimano Alfine 11) installed on my bicycle. My bicycle has a horizontal rearward-...
0
votes
1answer
348 views

How much axle space for the cap nuts and chain tugs?

I am investigating whether I can insert cap nuts with too short axle attaching area. The image below is exaggerated but the attaching areas are about 1.2cm and 0.95cm. The difference 0.45cm meant in 6 ...
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 ...
19
votes
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 ...
11
votes
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 ...
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 ...
8
votes
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 ...
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
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 ...
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 ...
7
votes
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?
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
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 ...
4
votes
1answer
733 views

which multi-speed hub should I upgrade my trek district to

So my rear freewheel hub broke on my single speed belt driven (no metal chain) trek district. Since I have to replace the rear hub, I'm thinking of replacing the rear hub with an internally geared ...
4
votes
2answers
10k views

Slipping gears on new Electra Townie 8i

I just got an Electra Townie 8i bike and the gears are acting weird. I hear clicking noises when pedaling and sometimes it slips down to a lower gear. This is especially true for 4th gear. Is this ...
4
votes
1answer
235 views

SRAM i3 coaster brake only activating after multiple turns backwards

My son's bike has a SRAM i3 internal gear + coaster brake hub. It has recently started sometimes only activating the coaster brake after backpedalling a good one or two full revolutions. When in this ...
4
votes
3answers
695 views

Half speed internal hub gear?

Rather than resort to radical gears such as a very small granny chainring (such as 20T) and a very large rear cog (40T), both of which can cause some problems for derailleurs as well as other problems ...
3
votes
1answer
426 views

Sturmey Archer SRF5W lateral axle adjustment

I have some irritating Long-Shen rear dropouts (deep semi-circular lips around the outside) which are causing problems with fitting a Sturmey-Archer SRF5W internally geared hub. I would like to shift ...
3
votes
5answers
2k views

How to install a Rohloff Speedhub on a Surly Troll with rear facing horizontal fork ends

I have a Surly Troll with rear facing horizontal fork ends. Is there a recommended way of installing a Rohloff Speedhub 14 on the Surly Troll? These answers mention tugnuts and washers, but perhaps ...
3
votes
2answers
228 views

Shimano Nexus with shift levers

Shimano Nexus usually comes with a twist shifts. Is it possible to also use shift levers with Nexus? Which ones? More concretely, Shimano Nexus C6000 Revoshift (8s) (hub) and Shimano Alfine 7000 (8s) ...
2
votes
0answers
2k views

Shimano Nexus 3 coaster brake screeching sound

When I brake hard/er with my Shimano Nexus 3 coaster brake it makes a loud screeching sound. Like really loud, everybody on the street would hear it and turn around. Since I know it's all internal all ...
2
votes
1answer
260 views

Can an IGH have the same maximum overdrive-ratio as a crank-sproket setup?

Is there an IGH that gives one the maximum overdrive-ratio that one might get with a 39-53T crankset and a 11-34T freewheel? If not, what is the mechanical roadblock in making one ?
2
votes
1answer
1k views

Can I lace a 36 hole hub to 48 hole rim?

I'm trying to install a 3 speed, 36 spoke hub into my 48 spoke rim. I want to try and retain the larger wheel if possible instead of downsizing to a 29" tire. I'm getting mixed information that it ...
2
votes
3answers
1k views

Loud cracking noise after installing new chain

I did some work on my Rohloff bike today, installing a new chain & chainring and reversing the sprocket. When trying out the bike afterwards, something in the drive train was making a loud ...
1
vote
2answers
2k views

Gear for incline - Internal Gear Hub?

I'm new on the cycling scene and I'm looking to build a bike. I'm a bit worried about my route home, since although only 5KM it's quite steep in places, with 0.25KM being at a 16% incline, and the ...