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.

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1answer
42 views

Nexus 7 speed will not go into 6. and 7. gear

Hope someone can help😎 I have an elder Nexus 7 speed internal gear, which will not shift to 6. and 7. gear but go backwards. Instead of getting the 6. and 7. gear, I get 4. or 3. gear. The ...
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58 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 ...
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Which dust cap fits on the Shimano DH-C6000-3R dynamo hub?

I have a Shimano DH-C6000-3R without a dust cap and I would like to get one. The explosion diagram can be found here. Both the Shimano SG-C3000-7R and SG-C6000-8R internal gear hub with rollerbrake ...
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3answers
183 views

Smaller chainring on the right side of a bigger one possible?

I recently converted my bicycle from a derailleur setup to an internally geared hub. During the conversion, I also replaced the previous crankset (with three chainrings) by a crankset having a single ...
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1answer
121 views

Back wheel jumping out of rear dropout with child transporter

Some days ago, I was riding my bike towing a child transporter. I was going steep uphill and put quite some force on the pedal. Suddenly, I heard a loud snapping sound and the back wheel was blocked. ...
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2answers
151 views

How much energy loss should there be in an internal hub 8-speed?

I've recently acquired a Specialized Globe Haul 2, which was stored in a shed in Arkansas for 10 years and never ridden. It has the original Shimano Alfine 8 speed internal hub. I replaced the tires ...
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1answer
63 views

Need guidance on selecting proper Gates belt drive components for my belt-ready frame

I have a very cheap, locally made bike with a belt drive installed on it (the frame is belt-ready). One more thing to note is that the bike is equipped with SG-3C41 IGH from Shimano. The problem is ...
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4answers
322 views

Use Brompton BWR 3-speed hub to create a full 700c wheel?

I have been looking at getting an internal gear hub wheel for my commuter. I currently ride a fixie and I find myself wanting a lower gear at stop lights and a higher gear in straight aways. Basically ...
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1k views

Commuter bike for better performance: less weight, or internal gear-hub?

Background I commute daily to work, the ride is about 10 km each way, across the city. The path is mostly streets with intersections, and a few long cycling lanes. Some hills here and there: Strava ...
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297 views

Bridgestone Albelt

For reasons that have nothing to do with bicycles I retired in the Philippines. I needed transportation and due to traffic density and poor infrastructure a bicycle made the most sense. It's a poor ...
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107 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 ...
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1answer
186 views

Opening a Shimano Alfine 8 hub (large dust cover)

I’m dismantling my Shimano Alfine 8 hub to service the internals. I’m at the stage in the photograph but can’t turn the large black plastic dust cover, with <-tighten loosen-> on it. The hub has ...
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2answers
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What's wrong with my shifter?

This is a Nexus 7 spd hub gear twist shifter integrated in the brake lever. I had to undo the gear cable to get my rear wheel out. I therefore turned the bicycle upside down (some say that this alone ...
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1answer
145 views

What are the differences between new Nexus 7 speed hub (SG-C3001-7), versus old (SG-C3000-7)?

From the outside shells seems to be different, but are there more important changes inside that influence durability or efficiency?
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1answer
80 views

What kind of fork end is this?

I am looking for a new city/urban bike and thought that a gear hub would be a nice addition (before this I was exclusively using derailleur gears). To get started I was reading the wiki page on fork ...
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1answer
149 views

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 ...
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1answer
100 views

Wear on an IGH by pre-selecting gear under power

I have a bike with an 11 speed alfine IGH in the rear wheel. It works fine, and I am comfortable riding it. When accelerating hard or sprinting for some reason, I've noticed its possible to change ...
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1answer
148 views

Can I install/convert a Giant Quick-e+ 2019 to use an Alfine 11 speed IGH?

I have a Giant Quick-e+ 2019 and would like to install either a Alfine 11 speed di2 IGH. My first question is, is it compatible? I've been looking at the measurements and it seems all ok. But when I ...
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2answers
169 views

Replace Nexus 3 with rollerbrake with Alfine 11

I have a cargo bike equipped with a Nexus 3 hub shifter and related roller brake. Since where I live is pretty hilly, I'd like to replace it with a shifter with a big range and little gap between the ...
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7k views

What are the differences between the Alfine 8 and the Nexus 8?

I'm shopping for a new bike and I have a choice between one with the Alfine 8 and the other with the Nexus 8. They seem to be pretty similar, but from what I could gather from forums here and there, ...
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1answer
390 views

Lubricating an alfine 11 IGH hub

I have an almost-new New-Old-Stock Shimano Alfine11 internal geared hub in the rear wheel of my bike. Its on 300 km now, with a first oil change due at 1000 km and then yearly or every 5000 km after ...
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751 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 ...
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534 views

New bicycle for commuting

I'm just retiring my old roadie and looking to buy a new bike, and am torn on what kind to buy. I cycle 34 miles per day on my commute, down roads and canal towpaths (which are bumpy and have on ...
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104 views

Wheel keeps going out of alignment and loosening the chain

I have an electric bike with internal hub gears on the rear wheel, so no derailleur. This means that for the chain to stay tight, the wheel axle needs to be dragged back into its seating before it is ...
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1answer
186 views

Adjust Nuvinci nfinity gears

After the latest service, my manual Nuvinci nfinity is set to higher gear than before and I want it lowered again. Surfing the web I find nothing like "turn this knob to adjust gear". The closest I ...
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1answer
949 views

Can I replace my Shimano Nexus 7 with a Nexus 8 hub?

My 2 year old bike has a (damaged) Nexus 7 IGH, it started running heavy and I can't find out why. Rather than getting it fixed I'm considering replacing it with a Nexus 8 hub, as they supposedly of ...
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1answer
77 views

Does only Rohloff manufacture the sprocket for their Speedhub 14?

Are there any manufacturers other than Rohloff who make the sprocket for the Rohloff Speedhub 14? Is the sprocket Rohloff specific or is it a standard / general / everyday part?
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2answers
148 views

Would a IGH drive train last longer than a derailleur drive train?

Would a single sprocket + 8 speed chain + single chain wheel used in combination with a IGH last longer than a 10 speed cassette + 10 speed chain + 3x chain wheels? Image I have 2 bicycles. Bike 1 ...
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1answer
72 views

Does a torque anchor prevent an IGH (Rohloff Speedhub 14) from being pulled forwards and crooked whilst riding?

Assume a bicycle with horizontal fork ends (like the rear facing horizontal fork ends on a Surly Troll), with an IGH (Rohloff Speedhub 14) and no chain tensioner. On a steep uphill in the easiest ...
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5answers
917 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 ...
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3answers
886 views

How to compare an IGH (Shimano Alfine 11) with a 10 speed cassette and 3x chainwheel?

I'm try to compare the gear ratio of a IGH (Shimano Alfine 11) with a 10 speed cassette + 3 chainring setup. I read Sheldon Brown's gain ratio definition. I went to Sheldon Brown's gear ...
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3answers
222 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-...
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1answer
321 views

Shimano 3 Speed Internal Hub Gear on child bike popping chain on 3rd speed

my daughter got a S'Cool bike that's a 3 speed internal hub gear system. It works fine in the first two speeds but when it goes to third gear it makes a bit of noise - like a small "whizzing" sound ...
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1answer
286 views

Parking a 3-speed internal hub in 2nd gear permanently

I recently bought a gently used, not super well maintained Columbia 3-speed bike from some time in the 80s. It has an internal hub - the dreaded Shimano 333. My eventual plan is probably to convert ...
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2answers
551 views

Can I replace a 135mm/5mm QR hub with a 10mm-diameter IGH?

I have a bike whose rear wheel has "quick-release 5 x 135mm". Will I be able to replace this rear hub with an in-gear hub that has "Length 135 mm, Axis diameter 10 mm" (this is the N380 hub)?
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1answer
619 views

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 ...
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1answer
591 views

Shimano Nexus 7 gear hub slips

I need help on adjusting my Nexus 7 Shimano rear hub. Today I tried to install a Shimano 7 gear shifter to change the gears on a Nexus 7 Shimano rear hub. Before installing, I lined up the red lines ...
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1answer
201 views

pedaling gap after shifting internal hub

I have a 3-speed internal gear hub. After switching between gears no pedaling is possible until I rotate the chainring about a half turn. Is it normal or did something go out of adjustment?
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2answers
4k views

How do I tighten the loose chain given an enclosed Nexus rear hub?

How do I tighten the loose chain on my son's bicycle given an enclosed Nexus rear hub (3 gears but no visible external cogs) ?
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1answer
924 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 ...
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5answers
12k 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 ...
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1answer
193 views

Alternative to tuning automatic hub?

I am contemplating purchasing an automatic gear hub, namely the SRAM Automatix. One of the criticisms leveled at this hub is that it shifts up too soon. The default settings can however be adjusted if ...
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1answer
345 views

Electronic shifting for planetary gear hub

Gear hubs are nice, but after getting a Rohloff I realized that shifting is extremely difficult and requires lots of effort. So this got me thinking: do electronic shifting systems exist for gear hubs?...
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3answers
1k views

What kind of chain to buy for internal gears?

What kind of chain should I buy if my gears are internal in a drum? I have seven gears but should I buy a one speed chain? What would happen if I would use a seven speed chain?
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1answer
209 views

Restoring BSA bike - replacing rear wheel and freewheel

I'm trying to restore an old BSA bike. I want to salvage a Sebco freewheel from a very messed up wheel. I want to know what do I need to remove it. Am a newbie home mechanic so I know nothing. Since ...
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1answer
575 views

Shimano Nexus SG C6000-8R and SL-S503

I have a very specific compatibility issue : I just bought a Shimano Nexus 8 "SG C6000-8R" rear hub and would like to know if I can use it with the Shimano "SL-S503" gear trigger. The reference page, ...
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2answers
295 views

Oil or grease leaking, I think, from hub

Black oil or grease is leaking from my brand new src3 hub. Is this normal? I thought internal geared hubs like this are supposed to be sealed. This the bottom of the hub with the bike upside down. I ...
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1answer
273 views

Convert Sturmey-Archer AW hub to AWC

I have a 1972 Schwinn Breeze with a Sturmey Archer AW 3-speed hub (no coaster brake). I would like to replace the internals of the AW hub with the internals of an AWC hub (which has a coaster brake). ...
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3answers
631 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 ...
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2answers
1k views

Chain keeps slipping on in-hub geared bike. Stretched chain?

I have an Avanti Discovery 8, which is a mid-range hybrid bike with Shimano in-hub gears. I ride about 20klms a day on bike paths so whilst it gets a work out, it never really gets much bad abuse. I'...