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Repairing, maintaining, or replacing the chain on your bike that connects the front of the drivetrain (cranks, chainrings) to the back (cogs, cassette).

2
votes
2answers
88 views

Rotating 12-speed SRAM GX chain

I have a new mountain bike with an SRAM GX 12-speed drivetrain. I am thinking about rotating the chain to make maintenance easier and to increase the lifetime of the cassette. I would swap between two ...
0
votes
2answers
71 views

Single Speed / Fixie - Chain tension / uneven tension

I recently changed my chain and noticed it has uneven tension (probably my chain ring being out of rounds). I followed parktools video and set the tightest spot to have about 0.25 inch movement up and ...
1
vote
2answers
55 views

What size chain for 200gs FC-M202?

This FC-M202 200gs has a label saying For NARROW chain only: So what size exactly? Wikipedia lists three sizes: 3⁄32 in (2.4 mm), 1⁄8 in (3.2 mm), 5⁄32 in (4.0 mm), or 3⁄16 in (4.8 mm) I can't ...
1
vote
1answer
46 views

Chainring and chain compatibility for Suntour chainring

just ordered a new chainring for my nexus-8 equipped longtail bike, it's a suntour 48 tooth chainring shown here: https://www.srsuntour.com/products/32-tooth-chainring?variant=27528743299 it's a ...
3
votes
1answer
268 views

Chain get stuck on front sprocket during pedalling

When pedalling the chain sometimes get stuck on the front sprocket. This happened after I cleaned the gears and replaced the chain. What could cause this? The purple line is the chain. The circles ...
0
votes
1answer
26 views

Chain tensioner (or tug) for single speed QR dirt jump bike?

Recently i have started to learn no foots on dirt jumps, but i have noticed my cranks can sometimes spin in the air leading to some dodgey situations. I believe having more tight chain would solve or ...
8
votes
4answers
931 views

Chain shortening only one link?

Is it possible to shorten or extend a chain only one link as shown in the photo (in red square). Or do I have to shorten at least two links in order for the other end to match? The reason I'm asking ...
0
votes
1answer
57 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 ...
1
vote
2answers
63 views

Chain skipping on new single speed freewheeel

I just got a Colnago Master Arabesque single speed conversion from a friend who moved abroad. It's set up as a fixie on a flip flop Hub. I flipped the wheel and installed a new single speed 1/8 ...
4
votes
1answer
256 views

How to extend a chain for a cargo bike?

I have a KMC x10e chain which is 162 links long on my Xtracycle electric cargo bike. The chain is worn and I am trying to replace it. From what I can tell it is available only in 136 links. Is the ...
6
votes
3answers
157 views

Cannot shift to lowest gear - chain too short?

I’m in the process of switching from an 11-25 to 11-32 rear cassette. The upgrade has involved replacing the cassette, rear derailleur (short to medium cage) and fitting a new chain. I can cleanly ...
0
votes
4answers
134 views

Can rusting of chain be slowed?

I have been using a silicone spray on my chain, but it isn't long before it rusts. Anything better? What about about Squirt Long Lasting Dry Chain Lube ? Thanks.
8
votes
4answers
1k views

Chain loosening over time (Fixie)

I've ridden a fixed gear bike for years now, but I've only just questioned if I have been doing something wrong when adjusting the chain. You see, I have to tension the chain (pulling the rear wheel ...
2
votes
3answers
164 views

How long can I safely use a chain for?

My chain is well over the 0.75% extension at which I would normally replace it. However, the cassette and chainrings are also old enough that a new chain would slip on them, so they would also need ...
1
vote
1answer
49 views

How long does a freewheel cog last?

4 months I asked this question when I changed my chain: What can be done wrong changing the chain in a single speed? and the solution was to change the freewheel cog. I decided to "invest" in the not ...
1
vote
3answers
125 views

What are the causes of rear derailleur chain noise?

My rear derailleur is making some noise and I'm having trouble diagnosing the cause. It seems like it's coming from the rear cogs and sounds similar to chain noise. I'm re-building my bike after an ...
1
vote
1answer
84 views

What methods to determine chain length?

I would like to know what methods there are to size chain length on a derailleur geared bike. There should be more than one answer, so there are effectively no wrong answers - don’t be shy. What are ...
1
vote
1answer
46 views

8 speed chainring with single speed 1/8" chain

Can I use a chainring designed for 6/7/8 speed with a single speed, 1/8" chain? The rear wheel only has a single cog - no derailleurs.
0
votes
2answers
105 views

My bike makes a noise from the cranks

Weird problem. My mtb makes this clicking noise at the same spot when i pedal. It sounds like its coming from the crank but if i backpedal it goes away for about 5 minutes and then comes back. Is it a ...
6
votes
2answers
303 views

Multiple master links on the same chain

Not so long ago I put a new PYC SP1101 chain on my bike, but several rides in I managed to snap the rear derailleur off, which also bent a bunch of chain links. No way I'm throwing a perfectly good, ...
2
votes
3answers
134 views

Skipping on new chain, new cassette, new derailleur

For a long time I have been having issues with chain skipping on my 1999 Trek 6500. I took a video to illustrate exactly what I mean by "skipping": Over the last ...
0
votes
2answers
111 views

Use of an alternative chain lubricant [duplicate]

What is the best chain and gear lubricant used by pro cyclists either for maintenance or for racing and how often is it recommended to apply? I have limited knowledge and so I have always simply used ...
1
vote
4answers
352 views

Cycle touring. First chain failure. Thoughts on cause?

Was pedalling up steep hill on gravel road. No gear change. Just seemed to go mid push. Was very steep and out of saddle....had to push the remainder of way! 🙈
1
vote
2answers
91 views

Sram quick link on a Shimano chain

Is it compatible to use a Sram quick link on a Shimano chain (both 11sp.)?
3
votes
1answer
39 views

Lubed Chain getting temporarily seized

I recently cleaned and lubed my chain, havent had a chance to ride it yet, but if I leave the chain alone for a day or 2, it seems to seize up. It takes a lot of effort to backpedal it free. After ...
2
votes
1answer
83 views

Constant squeaking when pedalling

My bike has had an ongoing issue for a couple of months. Most of the time I pedal there is a constant squeaking noise (which I can't pinpoint but seems to be from the chain). This noise only occurs ...
1
vote
1answer
175 views

Chain shifting when back pedaling

On my bike I found that when I backpedal, if the chain isnt perfectly straight, it is prone to shift to a more central gear. E.g would be if on the small chainring and the largest cog, backpedaling ...
22
votes
11answers
5k 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 ...
0
votes
1answer
52 views

Derailleur tension causing chain friction?

I have a foldie which recently seemed a bit harder to pedal. Specifically back pedaling seems harder than it should be (if I kick the pedal back, it barely travels a quarter or half turn. I noticed ...
1
vote
3answers
73 views

Chain slips on low and high gear and sometimes when putting some strain into it

I have been running an 8 speed cassette/freewheel, don't which cuz I never checked before it seized the other day.I was using it with a 7 speed shifter, not ideal I know but it worked OK just used 7 ...
3
votes
1answer
85 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 ...
1
vote
4answers
170 views

Vibration and wobble after replacing chain

I'm having a bit of trouble getting my back wheel on after replacing my chain. There is a wobble once per revolution. It wobbles such that, if viewed from above, it appears to spin straight for most ...
1
vote
1answer
48 views

Gear problems on my bike

When I change the gear from 3 to 2 the gear shifter does not properly change the gear. It will just move to gear 1 then it pops off. I put the chain back but it still had the same problem.. I don't ...
6
votes
4answers
900 views

How to properly align the rear wheel to the bike (granny bike, single speed)

I have an old bike in which the rear axle is like you can see in the pictures below. It has pedal-brake. I've been struggling with the wheel alignment with respect to the bike. Each time I put it in, ...
2
votes
1answer
96 views

Chain Pops When Leaving Cogs

This problem has consumed a lot of time and resources and has yet to be solved. This is a basic Giant Iguana mtb, with a Deore rear derailleur, SRAM 950 9-sp cassette, Truvativ chainrings, Shimano ...
1
vote
1answer
275 views

Do half link chains work on any bike and what is their purpose?

Do half link chains work on any bike? What is the purpose of a half link chain? I've noticed that only BMXers and DJers use them, and that leads me to believe there is a technical reason behind ...
3
votes
1answer
130 views

Will this chain work on my bike?

I've bought the Shimano HG40 chain which is advertised as a 5,6,7 and I think 8 speed chain. I've just received it and it also says 15,18,21,24. (Obviously including the front gears). My bike is a 2x6 ...
6
votes
2answers
470 views

Chain noise, fixed gear

This is my first bike ever assembled, I’m a total newbie. I’ve just finished to put chain/cog and did my first try of chain tensioning. All components are new, but still I don’t understand why there’...
1
vote
3answers
180 views

I have changed the chain after my gauge showed that it's .75 worn. New chain jumps anyway. Why? How to deal with it?

I am riding MTBs for over 8 years and either the rules and tools to measure the chain wear do not work or I don't understand how to use them.. I have bought Canyon Exceed with 1x11 SRAM drivetrain. I ...
3
votes
1answer
139 views

Just installed a new chain but it took me 4 tries, is it safe?

I just installed a new Shimano 105 11sp chain on my bike using a park tool chain tool to put in the pin. But I screwed it up 3 times 🙄. After each time, I popped out the pin and used a new pin (ended ...
5
votes
1answer
84 views

Why does my chain have a single hollow pin?

I have some version of a SunRace 10-speed chain, and I'm curious as to why it seems as though each pin is a regular "non-hollow" pin, and a single one on the chain is hollow. Is this some kind of a ...
3
votes
1answer
162 views

Using Rohloff with a thicker chain

I have a Bosch/Rohloff bike that currently uses a 3/32 chain. Seems like that's the standard for Rohloff hubs. Problem is, I'd much rather use a 3/16 chain, i.e. a chain that's exactly twice as thick. ...
2
votes
1answer
83 views

Fixed gear drivetrain problem

Sometimes, when I put a lot of pressure on my pedals while accelerating or skidding, my pedals "drop" like when your cog is unscrewing. I have a lock ring, so it's not unscrewing. I've recently ...
-2
votes
3answers
183 views

Is there a bike less prone to having the chain fall off?

So my biggest frustration with my bike is that because of weather, abuse and bumpy trails the chains eventually come off. Unfortunately this often happens in the least ideal situation. Is there a ...
3
votes
2answers
129 views

2x10 drivetrain and chain crossing

I've used to ride with 3x10 setup on my MTB. Now I've got a new one with 2x10 (Avalanche 9R Expert). The question is: do I need to worry less or more about chain crossing on this bike? This is not a ...
4
votes
1answer
88 views

What can be done wrong changing the chain in a single speed?

I changed the chain of my singlespeed. I though it was going to be something really simple and quick, but I was completely wrong... I keep getting a lot of noise while I'm pedaling (unless I go ...
1
vote
1answer
96 views

Why is my Ultegra 6600 much noisier when cross chaining compared to my Deore XT M8000?

This has been bugging me for a while. The Ultegra has no visible wear. The chain has no measurable stretch. The Deore is silent even when dirty and not oiled. The Ultegra is much noisier when freshly ...
9
votes
2answers
827 views

When did bicycle chains go back to being bushingless?

The original bicycle chains were of a "bushingless" design, then later they came up with a roller chain design that utilized bushings, this was later updated again to the chains we are used to today ...
0
votes
3answers
156 views

My Supercycle chain keeps breaking randomly

I have an almost brand new Supercycle bike and for some reason, the chain keeps breaking on it. What could I be doing wrong
1
vote
3answers
185 views

How to tell if a chain should be replaced with park chain checker when it doesn't fit?

I have a park chain checker CC-3.2 which has two sides to indicate when a chain reaches .5% and .75% wear. However, since I often have some filthy chains due to off-road riding and daily commuting ...