All Questions
Tagged with gears internally-geared-hub
31 questions
12
votes
2
answers
2k
views
Is there a word for the range of "difficulty to pedal"?
On an older bike I had 21 gears with two blocks of chainrings (one at the pedals and one in the back). Currently I have 8 gears with a shimano system where the chain does not hop on different ...
- 231
7
votes
1
answer
692
views
Why can't the Schlumpf Mountain Drive be used along with the 14-speed Rohloff?
Why is it "not allowed" to use the 14-speed Rohloff in combination with the Schlumpf Mountain Drive?
According to Function-Schlumpf-Mountain-Drive.pdf:
Please notice: the 14-speed Rohloff ...
- 537
3
votes
1
answer
70
views
Is play on the Schlumpf Mountain Drive chainring a problem? How to fix?
There is forward & backward play on my Schlumpf Mountain Drive chainring. Is this a problem? If so, how do I fix it?
When I hold the crank steady, there is back-and-forth play on the chainring in ...
- 537
1
vote
1
answer
1k
views
Shimano nexus 3-speed hub gear, yellow dot does not move when adjusting
I have a bike with a Nexus 3 hub gear. Yesterday the shifting got out of whack, when set to gear 2, it was actually in gear 1, gear 3 was 2, and so on.
I looked up how to adjust it, and found that I ...
- 137
1
vote
2
answers
506
views
Why are IGH minimum gears expressed as ratios not contigent on wheel size?
I've wondered about this before, but I'm doing a Brompton Rohloff conversion for someone and the moment has finally arrived where it's not just a theoretical issue:
Shimano and Rohloff both recommend ...
- 88.2k
0
votes
0
answers
76
views
Why does my Shimano Nexus 8i need readjustment after every gear shift?
Since a month or two, almost every time I change gear my Shimano Nexus 8i becomes "unadjusted". I have readjusted it dozens of time but the problem persists. The gear is really easy to ...
- 351
5
votes
2
answers
19k
views
How to maintain a Shimano Nexus gear hub?
I have a bicycle with Shimano hub gears (Nexus 7 speed). I would like to know what type of maintenance it needs, besides the normal tuning.
I believe it needs some greasing, but I have no idea how to ...
- 593
1
vote
0
answers
242
views
which motor is used to change gears in automatic gear shifting cycle now-a-days?
I am doing a project on automatic gear shifting. I need to choose which motor will be used to change the gear.
I have found a previous question on this topic. An answer mentioned:
If you used a ...
- 11
7
votes
2
answers
1k
views
Internal friction in new Alfine 11 S7001-11
I just bought a new rear wheel with an Alfine S7001-11 internal-gear hub. Before installing it, I realized that it apparently has heavy internal friction. When the wheel is set in motion, it comes to ...
- 71
1
vote
1
answer
2k
views
Why can't I adjust my Shimano Nexus 8 gear?
I have an three year old Electra Townie 8i with the Shimano Nexus Inter 8 hub gear that needs to be adjusted. I followed the guide in this clip
and it was easy enough. ...
- 351
1
vote
2
answers
836
views
Longtail cargo bikes - why no internal-gear hubs?
I really like the idea of ("compact") longtail cargo bikes, i.e. bikes with a regular frame shape but with an extra-large and sturdy rack for transporting medium-sized loads and persons/kids. ...
- 2,242
0
votes
2
answers
252
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 ...
user31142
4
votes
3
answers
5k
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 ...
user31142
2
votes
2
answers
3k
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'...
- 493
2
votes
1
answer
207
views
Help me understand my Hub Gear bicycle
I recently acquired a second-hand Hub gear hybrid bike. It only has 3 gears. I know little about bike mechanics but would like to try and understand more.
When I cycle the gear shifts between gears ...
6
votes
7
answers
4k
views
Feasibility of coupling internal hub gear and derailleur
Price considerations apart, would it make sense to install together an internal hub gear and a derailleur?
I was thinking of it as a viable way to avoid having the front gears.
- 7,311
1
vote
2
answers
3k
views
Gear for incline - Internal Gear Hub?
I'm new on the cycling scene and I'm looking to build a bike. I'm a bit worried about my route home, since although only 5KM it's quite steep in places, with 0.25KM being at a 16% incline, and the ...
- 113
8
votes
1
answer
2k
views
Have they ever made a bicycle with in-hub gears both at the crank and wheel?
I've got a hybrid bike with an 8 speed in-hub gear. I chose it because I didn't want to worry about the chain coming off or adjusting the derailleurs. It's been pretty bullet proof and given me no ...
- 493
4
votes
3
answers
815
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 ...
- 818
3
votes
2
answers
5k
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.
...
- 31
6
votes
2
answers
6k
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 ...
- 3,987
3
votes
2
answers
2k
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 ...
- 206
2
votes
1
answer
289
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 ?
- 295
4
votes
1
answer
738
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-...
- 295
2
votes
3
answers
189
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, ...
- 221
7
votes
4
answers
3k
views
Comparing gear ratios on different bike types
How can I compare gear ratios on different wheel sizes? How can I compare gear ratios on MTB with tracking bikes with bigger wheels? How can I compare gear ratios with gear hubs?
- 233
3
votes
2
answers
1k
views
Make a 3-gear bike go easy on uphill
I want to see how can I make this 3-gear bike go easier on uphill. It has an internal gear hub. I don't know much about bikes but I'm thinking if I can merely replace the hub for one with 14 gears (...
- 93
2
votes
3
answers
6k
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 ...
- 121
2
votes
1
answer
4k
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, ...
- 121
61
votes
6
answers
111k
views
What are the pros and cons of internal gears?
I've had my hybrid 24-speed for a bit over 3 years now, and just last weekend, when looking for a bike for my wife, discovered internal gears. Suffice to say it blew my mind when I saw 7-speed ...
- 817
49
votes
11
answers
42k
views
What's the efficiency of hub gears compared to derailleurs?
What's the efficiency of hub gears compared to derailleurs? I know that hub gears are not as efficient. Apart from being heavier, how much will I lose in performance if I use hub gears?
- 2,908