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 ...

learn more… | top users | synonyms

0
votes
0answers
21 views

The sprocket wheel on my Shimano Nexus 7(SG-R46) no longer rotates freely when free-wheeling my bike

The hub has just been serviced at a bike shop. With the bike on a work-stand, the rear wheel rotates when I turn the pedals backwards. There is a lot of resistance if I hold the wheel and turn the ...
1
vote
0answers
45 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 ...
3
votes
0answers
42 views

Alfine 8 gear crunch

Occasionally under load when taking off on the flat, I would get a crunch, then it runs smoothly. After reading the other post I had tightened the wheel nuts but this has not fixed the issue. I have ...
5
votes
2answers
234 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 ...
6
votes
1answer
100 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 ...
6
votes
1answer
79 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?
3
votes
1answer
42 views

Cable pull, indexing of Shimano's IGH vs. deraileur

What's the exact cable pull and indexing of Shimano Alfine SG-S700 SRAM G8/9 Shimano ROAD RD-5800 SRAM Force Rear dérailleur other... The idea is to use ST-RS505 brifter with an IGH. Not entirely ...
5
votes
1answer
64 views

Could i break Shimano Nexus 7 with no cable attached?

Is it possible to ride (pedal) on bike with Shimano Nexus 7 with no cable attached? Is it possible to push the bike without pedaling, when cable is unattached, or setting of shifter is not correct? I ...
0
votes
1answer
24 views

Can a 7 speed torpedo cable index a modern day 7 speed freewheel?

I have an old cable from a 7 speed Torpedo internal hub and am wondering if it will properly index a modern day 7 speed freewheel or if it is way off. Is there an easy way to check this? Just ...
2
votes
2answers
134 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
223 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
106 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
148 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
144 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
175 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,...
5
votes
2answers
1k 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
97 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
310 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 ...
3
votes
0answers
191 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
103 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
222 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
1answer
508 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
163 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
163 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
313 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 ...
6
votes
2answers
283 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 ...
3
votes
1answer
155 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?
1
vote
1answer
226 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
540 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
338 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
311 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
699 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
118 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
117 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
492 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 ...
2
votes
1answer
183 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
417 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 wheel-...
3
votes
1answer
470 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
2k 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
110 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
337 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
427 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
129 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
140 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
557 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
4k 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
417 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
5k 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
2k 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 ...