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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).

0
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1answer
43 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
75 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
40 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
1answer
64 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
247 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
69 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
95 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
346 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
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2answers
62 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
38 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
76 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
95 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
50 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
66 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
67 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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votes
4answers
113 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
47 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 ...
5
votes
4answers
746 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
86 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
134 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
123 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 ...
3
votes
1answer
147 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
171 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
123 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
81 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
0answers
101 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
70 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
182 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
112 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
80 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
89 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
805 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 ...
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votes
3answers
149 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
161 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 ...
2
votes
1answer
90 views

Gear shifting : new to cycling maintenance

I'm new to cycling. I have a Soma Saga with SRAM X7 derailleur and Apex shifters. I have ridden about 200 miles on it. When I'm cycling, sometimes my gears shift/jump to the next gear on their own. I ...
0
votes
0answers
39 views

Will chain spray evaporate from its can when unused?

My bike chain cleaning spray has evaporated from its can while I stored it in my room after having closed it normally. I have used it only four times. Actually about a half of the bottle should be ...
7
votes
1answer
409 views

Gates Carbon Drive vs Single-Speed Chain, Long Term Lifespan and Maintenance

I'm looking to get a new bike which will require the smallest amount of maintenance. The bike will have an internally-geared hub and I have the choice of single speed chain or belt drive. I have ...
0
votes
1answer
95 views

Bike re-assembly gear and noise issues

I had an old general purpose bike that I wanted to use exclusively with my new turbo trainer. I ended up taking it apart almost completely and of course I did not take pictures so re-assembly was a ...
11
votes
3answers
6k views

I rode a children's bike, now the chain is sagging - is it ok to shorten it?

I know that I shouldn't have, but I had a go on my son's bike (https://www.giant-bicycles.com/au/xtc-street-20-2012). I think that I stretched the chain. It's sagging now with about 3" of vertical ...
26
votes
6answers
7k views

Do I really have to replace the cassette when I replace the chain, or is this a scam?

My chain broke so I brought the bike in and the guy told me "Well you don't have the old chain, so we have to replace the cassette also. They go together. If you don't replace the cassette then the ...
1
vote
0answers
49 views

Schwinn sidewinder 21 gear slipping?

If rear tire is off the ground, the wheel will spin when pedaled. When wheel is on the ground the pedals will move the chain in any gear but will not move the rear wheel. The chain is not losing ...
4
votes
2answers
144 views

Mismatched chain and chainring

Why specifically would shifting between chainrings of one speed type with a chain of another cause problems? As I understand it, all 3/32 inch chains have that as their interior width; the variance ...
0
votes
0answers
83 views

Choose number of link for a bicycle chain [duplicate]

I wonder what is best number link for a chain: 62L, 84l, 82L, 98L. And why there is some bicycle which only can use 98 L but can't use 62L.
4
votes
1answer
786 views

If you buy and install a brand-new chain, but never clean or lubricate it, what will happen?

When you buy a new chain, it comes lubricated with a factory-installed grease-type lubricant. This lubricant is similar to hot wax. (Reliable sources — including Sheldon Brown, Shimano, and ...
4
votes
1answer
1k views

Noisy new chain

I ride a mountain bike with SRAM XX1 running gear. I changed the 11 speed SRAM chain for a 11 speed KMC chain. The new chain is noisy. It sounds as if it is grinding against something but I cannot see ...
5
votes
3answers
660 views

Is this old chain of a different type?

My friend's bike needs a new chain. Looking at the chain, it looks like the pins have a slot for a flat head screwdriver? Is this just cosmetic or does this type of chain require unscrewing the pins? ...
14
votes
2answers
1k views

Why should one clean a chain?

I do understand that this may sound like a troll question but please bear with me. I've always been a maniac about drive train cleanliness until I got a 11 speed bike and realized I didn't want to ...
2
votes
2answers
128 views

Replaced my crackset, chain keeps popping off the small chainring under load

Looking for a little lower gearing on my gravel bike, I replaced the crankset with a FSA Omega with 46/30 chainrings, along with a new bottom bracket & chain. If I stand on the pedals while on ...
2
votes
2answers
776 views

How to choose a compatible set of chain, cassette and chainring?

I would like to change the chain, cassette, and the chainring of my bike. The cassette has 7 speed and chainring has 3. Is any combination of 7 speed cassette and 3 speed chainring built by any ...