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26 votes
11 answers
9k views

Are there real-life alternatives to the chain+derailleur combo?

I was reading an article about the CeramicSpeed’s Driven concept and, while not interested in the efficiency part, the chainless system reminded me of something I was wondering for some time: are ...
WoJ's user avatar
  • 1,135
18 votes
2 answers
56k views

Chain slipping off derailleur jockey

Last week, I had to abandon a training ride due to my chain slipping off my rear derailleur jockey wheel. This would only happen when shifting, and most often when either shifting chainrings or ...
Stephen Touset's user avatar
15 votes
3 answers
9k views

How efficient is string bike? Is this really a revolutionary bike?

Bicycles are getting evolved with good technologies or methodologies as the period changes. Now, this one bike, so called string bike has been introduced, which doesn't have chain, derailleur but ...
HariDev's user avatar
  • 316
14 votes
6 answers
6k views

Mechanic says not to use top three/bottom two gears or the chain will throw

I just bought a BTwin Fit 5, all stock, fresh from the distributor, Decathlon. Took it for light pacing at the store and things seemed OK. About 100 metres out the door, I shift up to the top end of ...
Esoteric Screen Name's user avatar
12 votes
2 answers
22k views

Moving from Shimano 9- to Shimano 10- speed

I'm thinking of changing the 9-speed Tiagra rear mech on one of my (road) bikes to something, still Shimano, but 10-speed. The obvious replacements I'll need are cassette, right-shifter and chain. But ...
PeteH's user avatar
  • 9,753
11 votes
3 answers
26k views

Apart from the size, is there any difference between chains for derailleurs or for single-speed / internally geared hubs?

I might need to replace my bicycle chain (see this question). The store where I've bought components before (cyclecomponents.com) seems to be entirely marketed to derailleurs, and I have an internally ...
gerrit's user avatar
  • 3,987
10 votes
3 answers
65k views

Is my chain too long?

I'm in the process of setting up a new drive train. When using the smaller chainring and smallest sprocket (hence least amount of utilized chain), the chain brushes up against the bottom of the ...
user avatar
9 votes
5 answers
2k views

I failed to replace my chain at the proper interval. Will I have to replace my whole drivetrain?

My bicycle is a 2012 Specialized Secteur. It has 6000 miles (10000 km), and I have never replaced the chain. I recently began noticing that the chain always seems out of alignment with the rear ...
Carlo David's user avatar
9 votes
7 answers
77k views

Problem with chain skipping without trying to shift (even with new chain and gears)

I have a mountain bike where the chain intermittently skips when put under load on the middle (and very rarely on the smallest) chain ring. It is not related to shifting. I've taken several steps to ...
Hans Løken's user avatar
8 votes
1 answer
2k views

Chain is loose and rubs the upper part of the chain stay

I noticed that my bike's chain is rubbing the chain stay when I use the lower gears. The bike is new; I'm wondering what the problem is.
Jonathan Pacheco's user avatar
8 votes
4 answers
7k views

Chain cassette noise

Hello fellow cyclists, I just bought a new Home Trainer that has a Shimano 105 Cassette. My Bike has an Ultegra drivetrain with less than 600km (375mi). I have checked the wear of the chain which ...
Isi's user avatar
  • 91
8 votes
3 answers
3k views

How tight should my chain be?

I recently put new tires on my bike, and in so doing, removed and replaced the wheels. It seems that now my chain has more slack in it than before, and if I pedal backwards while in the smaller cog ...
gabe.'s user avatar
  • 453
7 votes
3 answers
3k views

Chain with master link / quick connect link doesn't clear rear derailleur

Bought a chain with a master link (packaging said quick connect link), it looks just like this: This bit however won't fit cleanly through my derailleur, it snags on the wall right as it goes onto ...
Leeroy's user avatar
  • 483
7 votes
3 answers
347 views

Chain Links remain raised (i.e. sticky link)

I was trying to adjust my rear derailleur but I heard a noise. I found that when the chain went through the pulleys one link of the chain stayed up and made a noise. How do I fix this?
Alberto Murgia's user avatar
7 votes
3 answers
2k views

Single speed conversion chain keeps derailing rear cog under load?

The chain on my SS mt bike keeps coming off the rear cog under load (like when I hit a steep hill) it will hold right after it's tightened but after a few hills it starts coming off non-stop. Talked ...
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