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Gears in the drivetrain of a bike.
13 questions from the last 365 days
3
votes
1
answer
62
views
Bottom bracket resistance
I have a hybrid-style bike with Shimano components. The bottom bracket is a Shimano UN55. I briefly put in a different bottom bracket (of the same size specification) to see if a clicking noise was ...
- 479
4
votes
1
answer
308
views
Rear derailleur bends the cable
My cable housing for the rear shifter was broken, and every time I tried shifting, the housing would collapse instead of moving the cable and shift the gears. So, I changed the housing, but the gears ...
- 81
2
votes
1
answer
276
views
7 Speed Bikes with 8 Rear Sprockets?
Recently getting into bike repair/servicing, the last two bikes I've come across have 8 rear sprockets on the cassette but have come stock as 7-speed gears on the rear (it was a Norco and a Fuji bike ...
- 123
1
vote
1
answer
89
views
Stiff rear wheel on E-bike
I recently acquired a cheap E-bike, which I have not yet used but had various issues trying to set it up.
The latest thing, since the last time I looked at it about a week ago, is that the rear wheel ...
- 479
0
votes
0
answers
49
views
Setting the gears (I put new rear and front shifters on)
I can't get either gears to work properly, with the rear I can't get them all to shift correctly no matter what I do. Either I get 3-8 gears or I get 1-6 gears.
The front gears are a mess I can't get ...
5
votes
1
answer
171
views
Bicycle chain broke twice
So I recently bought a second hand refurbished bike at a bicycle repair shop (I'm in the Netherlands) and within two months the chain broke twice. I would like to know what is going on, how much I ...
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
9
votes
2
answers
2k
views
Simultaneous clang, hesitation and drop when I pedal with any weight
Background: New chain, new bottom bracket, new front derailleur, new shifters, new brakes.
This is a cheap Walmart Mongoose that I'm trying to keep riding and upgraded some of the components recently, ...
- 91
1
vote
2
answers
95
views
Cannot remove gears/cassette from axle (hub motor)
Cannot remove the cassette from the axle
I have an e-bike with an 8FUN hub motor,
I would now like to replace the cassette as the gears are quite worn.
But I can't get them off.
I have attached a ...
- 133
6
votes
4
answers
1k
views
How to achieve 24t-38t front chainrings
After staring at many a graph and crunching far too many numbers, I've concluded that a 2x, 24-38t chainring setup would provide the best gear ratios for me. I bike near the edge of a valley with ...
- 834
3
votes
0
answers
47
views
Indexing rear gears mountain bike
Bought an old bike to get back on the road, all good until indexing the gears.
It's twist shifts on the handle bars, 7 rear 3 front.
I've replaced the gear cables, sheaths, chain and Shimano parts ...
- 31
7
votes
3
answers
2k
views
Why does my shifter say the wrong gear?
I had a slow puncture in my rear tyre. I fixed it by flipping the bike upside down, removing the rear wheel, patching the inner tube and replacing the wheel. However, I seem to have caused a strange ...
- 273
4
votes
5
answers
325
views
Unable to shift to two largest cogs
Just been out on a ride and beforehand it was shifting through all the gears fine but I think I hit a few bumps and heard some clunking and I could not shift into the two highest gears. I did just re-...
- 81