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 ...

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2answers
95 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
105 views

Chain coming off with internal hub gear bike - why?

I have a Raleigh Caprice bike, about 7 years old, with sturmey archer 3 speed hub gears. There have been some problems with the hub gears in the past 9 months, which have been fixed by a mechanic. ...
2
votes
1answer
81 views

Run without a derailleur hanger?

I'm building a bike on an old aluminium frame that is missing the rear derailleur hanger. I'm putting an IGH on it, so I don't need to use the hanger, but the dropout seems too thin without it. Can I ...
2
votes
1answer
78 views

Shimano Nexus 8 Hub Alignment Mark No Longer Visible

I've got a Shimano Nexus 8 IGH, and was previously able to adjust it properly by aligning the two yellow tick marks in the 'window' as described here. However, I then removed and replaced the rear ...
4
votes
1answer
86 views

Shimano Nexus 3 — what anti-rotation washer to use?

As I described in my previous question, I attempted a gradual conversion from a dérailleur to a Shimano Nexus 3 gear hub. I have installed the hub, keeping the dérailleur's pulley for now, with ...
7
votes
3answers
150 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 ...
5
votes
2answers
475 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 ...
1
vote
2answers
88 views

Mechanism to draw rear wheel back and tighten chain stuck; oil not helping, what's next?

I have a bicycle with an internally geared hub (Rohloff). To tension the chain, I loosed the attachment of the rear wheel (dropouts), draw back the rear wheel, and tighten the attachment again. ...
3
votes
1answer
193 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
0answers
137 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 ...
1
vote
0answers
72 views

Which chainring/sprocket for use with a Sturmey-Archer X-RF8(W) IGH?

To increase the development range on a folding bike, I'd like to replace its three-speed SRAM IGH with a Sturmey-Archer X-RF8(W) IGH. The page says that it accepts a "20 to 23 or 25 teeth sprocket". ...
4
votes
1answer
144 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 ...
3
votes
1answer
303 views

Can't setup shifting on Shimano Nexus 7 after unscrewing wheel

I had to unscrew rear wheel to replace inner tube. I haven't fully detached it, just to the moment I was able to replace tube. After reattaching wheel I can't setup gears shifting (that's my first ...
11
votes
1answer
136 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 ...
6
votes
1answer
149 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?
2
votes
1answer
189 views

Modify geared hub to fit a 110mm frame

I have a kids' 18" bike with a fixed gear and a coaster-brake. I would like to replace the rear hub with a (preferably 3-)geared hub with a coaster brake as it is the kind of brake my kid is most ...
4
votes
1answer
228 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 ...
2
votes
1answer
145 views

Is it possible to tune a hub gear?

I have a city bicycle with an internally geared hub. The problem with it is that all the 3 gears are too small, and I have a few hills around. Is it possible to tune the gears so that they larger?
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vote
1answer
201 views

Gear step sizes between Shimano Nexus 8 and Alfine 8 compatible

I recently replaced my broken nexus 8 with a new alfine 8. i thought that they are compatible in regards to the shifter and the step sizes between the gears. but i notice now on the alfine that i ...
2
votes
1answer
403 views

Internally geared hub on a 20 inch wheel

The bicycle has a two gear automatic IGH, which I would like to replace with a 5 or even better a 7 gear hub. I am very much a beginner with this so I would need any kind of help and advice you can ...
2
votes
1answer
281 views

Can you use an Alfine 8-speed “disc” hub with a non-disc wheel?

I have a city bike with a Nexus 8-speed and I'd like to rebuild the rear wheel with an Alfine 8-speed. The only hubs I can find all seem to be disc mount hubs. My city bike has v-brakes. Is it ok to ...
2
votes
2answers
255 views

How do you make an end-capped gear cable?

I want to make my own gear cable of non-standard length. I have a cable with one end capped like the larger end-cap shown in the first picture; the other end is currently bare — I have trimmed the ...
3
votes
3answers
523 views

Internal Gear Hub for 16in Wheel?

My 4yr old son has a 16in Bikestar and at times he maxes out the gearing on it trying to keep up with his old man. How feasible is it to add either a 2 or 3 speed hub to such a bike? I'm concerned ...
4
votes
1answer
117 views

Decoding internal gear specs

I am looking at a bike which describes the gears as: 3 speed internal geared hub, 42t front and 16t rear gearing. What does the latter spec (42t/16t) describe?
0
votes
1answer
90 views

Specific Conversion to IGH

What do I need to research to switch to an internally geared hub? Having looked at the above Q and A, I have a followup question. I have a Globe Work 2, that I'm considering converting to an IGH. ...
2
votes
1answer
379 views

Can I mount a wheel with a narrow hub to a wide frame?

Suppose I have a 120mm hub with a long axle, that I want to mount in a frame with 130mm dropouts. In principle, it seems to me that this should be fine, but I want to confirm this. One immediate issue ...
1
vote
1answer
171 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 ?
12
votes
5answers
1k 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 ...
4
votes
1answer
386 views

Is it a good idea to switch to hub gear?

I have a Firefox Roadrunner Pro. I wanted to know if it was a good idea to install an internal hub gear on it. I want to install it to reduce dust accumulation and oiling and to simplify the ...
3
votes
1answer
344 views

Sliding chain back on hub gear bikes

I got a folding bike 2 months ago and got my first hiccup. It has a 3-speed hub gear and while changing gears today, it seems like the chain slipped off the smaller chainring near the back wheel into ...
4
votes
2answers
1k 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 ...
2
votes
2answers
103 views

Using a series of hub gears

I have an idea and I'm wondering if it's feasible. For an upcoming recumbent cargo touring build, I wonder if I could say use an 8-speed hub gear connected directly to an identical 8-speed hub gear, ...
0
votes
1answer
315 views

Alfine 11 chain guard

I'm planning to invest into a Alfine 11 set (both hub gear and crank+front cog(45)). I'm also looking for solution for chain guard for Alfine cog for commuting. I've found Curana brand that makes good ...
2
votes
2answers
357 views

Can you rebuild a Sram gear hub?

I bought a used bike with Sram 7 gear hub and after a few weeks, the chain started falling of all the time. I took it to a bike shop and they told me that the problem is in the gear hub, that it's not ...
1
vote
1answer
126 views

What advise for using spacers on MTB rear forkend

I have a Cannondale MTB frame I'd like to make a cruzer by adding a Sturmey Archer 2-speed kick shift. The SA axel length is 162mm and the spacing is 116mm but the Cannondale spacing is 135mm ...
1
vote
1answer
136 views

Any special issues with putting a larger internal gear hub on a smaller frame?

Can I safely put my 130mm internal geared hub on a 126mm spaced aluminum frame by forcing it? What are the consequences? How would the IGH be "damaged" by this? My IGH hub has a wheel laced and ...
3
votes
1answer
505 views

Fixing/replacing rim/wheel with Internal Gear Hubs (Nexus 3)

My rear wheel's rim is severely damaged and I want to replace the rim. I don't want to respoke it, so first question, is it possible to buy new prebuilt wheel somehow without the transmission itself, ...
6
votes
2answers
3k 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 ...
1
vote
1answer
391 views

How much “play” is normal in a Sturmey Archer 3 speed hub?

I inherited a bike with a Sturmey Archer 3 speed hub (Sturmey Archer AW, from 1984). I am very familiar with free-wheels and cassete hubs, but this is fairly new to me, although I did some research ...
5
votes
3answers
4k 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 ...
3
votes
1answer
1k views

Rear internal hub won't shift gears

I have a 1963 Sears cruiser, three speed, which I bought very recently. On my third ride, the middle speed stopped working, and went loose; there wasn't any "traction" when I pedaled. It happened as I ...
1
vote
1answer
597 views

dishing on alfine hub

I am building a wheel with an Alfine 8 speed hub which has space for a disk brake. I am measuring the dishing by supporting the rim and measuring the distance from the table to the end of the through ...
3
votes
4answers
921 views

Shifters compatible with: SG-3D55 (Shimano Nexus 3 speed - disk brake - internal gear hub)

I am planning to buy the SG-3D55 internal gear hub. According to this forum post, the SL-3S35 is compatible. But what about the other 3 speed nexus shifters? I am finding it hard to find any ...
7
votes
2answers
3k 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 ...
2
votes
1answer
282 views

Thinking of getting a new chainset

I've decided to get a new chainset as my current 38T Nexus is giving low speeds with my Alfine 8 speed hub. I have my eye on the 45T Shimano Alfine chainset. Currently I have a square taper bottom ...
9
votes
3answers
557 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 ...
1
vote
1answer
448 views

Grip for Shimano Nexus hub gear shifter

Would you recommend for a good grip from Shimano Nexus shifter? I hardly find a good option. Ergon grips seem to be the best choice.
7
votes
3answers
7k 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 ...
4
votes
3answers
957 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
2answers
6k views

Advice for servicing a Scott Sub 10 [8 speed Alfine hub gear]

I purchased a Scott Sub 10 last year and use it almost every day for commuting doing around 12 miles a day. I'd say I've done around 2000 miles since purchasing it last Summer. I am going to take ...