Bicycles Stack Exchange
Bicycles Stack Exchange

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.

Some IGH may really be a [CVT] internally - if there is a smooth ramp from hard to easy, with no discreet gears then that's a good sign it's something other than an IGH.

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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 the place some bikes have rear suspension. There…
Adam Eberbach
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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 mechanical efficiency recently. I now seem to be…
Ben Hutchison
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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 another bike shop which does maintenance on this kind…
huijing
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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 to shift), but what I'm most interested is the…
Reid
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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?
Rick
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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 reposition your pedals for starting (or while…
Andrew Wagner
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Are torpedo 3 gear shift cables a standard or are there different sizes?

I want to replace the cable of a bike with an old sachs torpedo 3 gears internal hub and I'm not sure what do I have to buy. In this related question the answer is that there are some differences between latter sram hubs, but, is the cable the…
nck
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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 ratio compare with what is possible with a standard…
RoboKaren
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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?
David Scott
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How to grease an internal hub gear?

Are there any online tutorials or can someone explain how to grease an internal hub gear? I did a bit of searching but I only find people completely desassembling their hub gears. I am looking for a more practical day-to-day example.
nsn
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What sort of oil/lube is "Shimano Internal Hub Maintenance Oil"?

https://www.amazon.com/Shimano-Internal-Hub-Maintenance-Oil/dp/B00O58QCQY I know what it is for. But what is it composed of?
Ralph G
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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 multi-speed one. All the bike shops around here…
MonkeyBonkey
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What is the maximum input torque on Sturmey-Archer internally geared hubs?

What is the maximum input torque that can be sustained by sturmey archers internally geared hubs. The website is surprisingly short on info about this. I'm specifically interested in the hybrid gearing hubs that allow fitting a 9 speed cassette…
diestl
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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 checked the yellow lines align also. It occurs in…
Darin
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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?
nsn
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