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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356 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 ...
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1answer
468 views

What is this point of this Phil Wood “Rohloff Disc Rotor Compatible Hub”?

http://www.philwood.com/products/hubspgs/rohldisc.php As far as I can figure it is for people with Rohloff-equipped touring bikes so that they have the same rotor bolt pattern on their front and rear ...
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2answers
254 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 ...
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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 ...
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1answer
281 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 ...
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3answers
2k views

Replace S-RAM S7 gear hub with something better

I have an SRAM S7 gear on my bike, and I'm not content with it. I find it more or less impossible to get the adjustment right. Supposedly I just have to leave the shifter in position 7 and then ...
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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 ...
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1answer
397 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 ...
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1answer
1k 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 ...
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1answer
2k views

Shimano Nexus Inter-3 internal gear hub stuck in second gear?

The situation My Shimano Nexus Inter-3 internal gear hub is stuck in second gear (it's a 3-gear hub). When I take the external cable housing apart, I can move the pin that goes inside to change gears, ...
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1answer
184 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 ...
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1answer
265 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 ...
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2answers
78 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 ...
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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. ...
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1answer
4k 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 ...
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1answer
170 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 ?
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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 ...
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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.
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1answer
200 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 ...
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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 ...
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1answer
390 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 ...
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1answer
595 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 ...
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1answer
728 views

Replacing the fulcrum lever of a Sturmey-Archer hub with something else.

I'm trying to find a way to bodge a S.-A. SRF5(W) hub onto a bike with difficult dropouts. There are two main problems (looking at step 6 of this diagram and also at these part pictures p.15,41 will ...
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0answers
135 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 ...
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0answers
68 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". ...
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3answers
350 views

Replacing the Trek Lime

I purchased a Trek Lime for my mother a few years ago. Unfortunately, it has now been stolen and I need to replace it. She has terrible arthritis so any bike that would require her hands to do more ...
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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. ...
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1answer
306 views

internal hub gear

Quick question. I can't change gear with a shifter, I suppose the gear cable might be an explanation. I don't have skills to repair that myself. It's stuck in high gear and I just want to lower it. Is ...
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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 ...
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1answer
491 views

Clicking gears on new Electra Townie 8i

I asked a similar question related to slipping gears here: Slipping gears on new Electra Townie 8i but now I no longer get slipping, but clicking noise when the pedals are rotated either forward ...
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1answer
274 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 ...