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

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5
votes
7answers
13k views

Chain slipping on newish bike

I've looked at most of the answers for related questions and they all speak about replacing parts that are old. I just bought a new bike from a friend who rode the bike for about a month before ...
4
votes
1answer
104 views

What went wrong with my bottom bracket spindle length calculation?

Here's the facts: My bike frame requires a 70 mm Italian threaded bottom bracket I'm going to use a Nuvinci N360 IGH which requires a chainline of 49 (± 0.5) mm. I have Andel fluted cranks, which ...
4
votes
2answers
379 views

Why does the chain tension vary as pedals are turned?

I have a new single-speed bike (after purchase this year, it was unused in a garage for a few months), but as I turn the pedals, the tension in the chain varies noticeably. What should I check, ...
1
vote
1answer
111 views

When I press on pedal, intermittent loss of power

Recently, when I cycled my bike the pedals would jump when I pushed down on them. I brought it to a shop who replaced the cassette, the chain, the two crank arms and probably the crankset. I have also ...
0
votes
1answer
51 views

KMC Z8S IG or HG compatibility

I have bought a KMC Z8S chain , but it slides over the rear cassette . The model of the cassette is Shimano CS-HG30-81 , it is not worn yet , and the chain length is also perfectly calculated . The ...
0
votes
2answers
66 views

Sliding chain over the cassette [duplicate]

Today I have replaced my chain with a kmc z8s. The rear cassette is Shimano acera 8 speed , and is not worn yet , so everything is OK with the cassette. But the problem is that the chain doesn't fit ...
9
votes
7answers
25k views

How tight should a fixie's chain be?

I ride an SE Lager fixed. How tight should the chain be and what is the best way of measure it? I have a chain tug so I can be pretty accurate in dialling in the right amount of tension. I don't ...
7
votes
6answers
5k views

While pedaling standing up, bike crank gives in as if shifting, what is causing this?

While standing up and pedaling, the cranks give in as if shifting. It seams like I am shifting down, but my hands are off the shifter, almost like the chain is skipping a link. I took it to a bike ...
1
vote
4answers
258 views

What should I look for when buying chain lube / lubricant?

In the past, I personally have only used WD-40. However, I have occasionally had my bicycle looked over at the locally run, free service sessions and most of the mechanics there use a hand applied ...
5
votes
3answers
277 views

What happens when a bike has not had maintenance for a long time?

I recently traded my Kent BMX bike I got from Wal-Mart: for a Ross road bike ). My friend tells me the bike sat in his back yard collecting rust, I see it has rust on the chain, the gears, brake ...
0
votes
1answer
104 views

Alfine 11 chain guard

I'm planning to invest into a Alfine 11 set (both hub gear and crank+front cog(45)). I'm also looking for solution for chain guard for Alfine cog for commuting. I've found Curana brand that makes good ...
1
vote
1answer
74 views

converting to fixed gear, chain problem

I just got a 16 tooth and tried to put on the old chain, BUT while it fits on the pedal cog (46 tooth), it does not on the rear cog. How can I solve this? a different cog in the back or a different ...
5
votes
1answer
200 views

Why do some people leave the chain sitting on the smaller sprocket when the bike is not used for a while?

I guess it is something related to the springs in the derailleur. But is it that important?
3
votes
2answers
235 views

Can you use Shimano 11 speed chain pins on a 10 speed chain?

I want to purchase a spare pin for my Shimano Ultegra 10 speed chain. Looking around I can only see 11 speed pins for sale. Can I put these into a 10 speed chain?
2
votes
2answers
149 views

Chain repeatedly tries to click into place without gear change

While pedalling, every 10 seconds or so, the chain on my bike makes the sound it makes during a gear shift - it "clicks", as if it's clicking into place in the new gear. But there is no gear shift ...
16
votes
4answers
81k views

How can I tell which size chain my bike uses?

After learning how to break a chain and reattach it, and also how to add and remove a master link, I find that I can now do much more in the way of maintenance at home. I'll no longer need to bring my ...
5
votes
4answers
1k views

What causes chain suck?

Specifically when changing gears from middle chain ring to smallest, the chain will sometimes get 'sucked' up between the inner chainring and chain stay. It seems to happen more often in muddy ...
2
votes
2answers
170 views

Chain skipping on new freewheel and chain setup - What went wrong?

BACKGROUND NOTE: The bike is a 1992 Univega MTB that originally came with 6-speed SIS with a triple chainring. I removed the SIS shifter when it broke, and went with a friction shifter. The bike is ...
2
votes
1answer
70 views

Derailleur twitching in low gears

I had a mild spill today on my new bike, which put the (Tiagra) derailleur cage a little bit out of line. With some bending and eyeballing, I got the two jockey wheels lined up 'almost' perfectly ...
0
votes
2answers
155 views

What could be the reason for chain skipping

My chain is skipping only on the smallest sprocket, and it skips with every crank turn. The chain is not stretched. Also, chainrings are almost new. Could this freewheel be the reason, it doesn't seem ...
18
votes
5answers
5k views

How do I reduce slack in the chain of a single-speed bicycle?

I have a single speed bicycle that has some slack in the chain and threatens to come off. How can I reduce this slack?
3
votes
2answers
253 views

When going up hills, my gears drop 2 to 3 slots. Is this my cable tension?

I own an old bike, with the old style gear shifters (levers). I have been trying to get the cable tension right. However, it seems to be getting worse. Whenever I am on a slight incline or just in a ...
5
votes
4answers
548 views

Reusing SRAM 10 Speed PowerLock?

According to: http://www.sram.com/sram/road/technologies/powerlock "SRAM chain engineers developed PowerLock as a tool free, sure and consistent way to connect our 10 speed chains. While PL does ...
1
vote
3answers
197 views

Chain really quite stretched, should I change cassette at the same time?

I measured my chain last night - 10 links were 25.8-25.9 cm. So I ordered a new one, tools and spare link pins (Shimano 8-speed HG). I'm thinking this amount of wear might explain why my least ...
1
vote
2answers
197 views

slow bike…is it the chain?

I have two Specialized Langster (one brand new 2013 model (54 cm) and the other a couple of years old unique London model (52 cm)) - both are single speed. Got sick of getting punctures on my daily ...
3
votes
1answer
93 views

Decoding Chain Descriptions

When you see chains advertised, they are specifically noted to be for 11-speed or 10-speed bikes or something similar. Does this mean the they are for bikes with any front cog configuration but only ...
1
vote
2answers
401 views

Upgrade my Rear Cassette from 12/25t to 11/28t

I have a Specialized Secteur 8-speed road bike with a Shimano HG850 12/25t rear cassette running on a KMX Z type narrow chain my crankset is a 52/42/30, I have done about 2,000 miles so it's probably ...
2
votes
2answers
150 views

Suitable remedy for chain damaged by bike shop

I've got a fairly old Dawes Discovery 301 (not sure of the year); earlier today I took it to a shop to have a replacement bottom bracket fitted. I rode it 2 miles home, and noticed a slight ...
6
votes
1answer
104 views

How are Prophete chains with built-in locks assembled?

I recently bought a 3/32" chain from Prophete, and despaired in the attempt to close it. The complex end of the chain looks like this: Now, at first thought, the slight groove (the one where you ...
3
votes
7answers
1k views

What are the benefits of nickel-plated chains?

Bicycle chains with higher model numbers (and slightly higher prices) are often nickel-plated or half-nickel-plated. What are the benefits of nickel-plated chains over non-nickel-plated chains? How ...
2
votes
1answer
107 views

How do I tell if a loose chain is because of the chain or the ring wearing?

My chain looks as though it's 'stretched' - by the time it's fed around the large front chainring it appears to be 'longer' than when on the other chainrings. Therefore I'm trying to work out whether ...
4
votes
2answers
170 views

Help with cassette, worn or not?

I have done exactly 2879 km on my cassette, and currently I got myself a new chain which is a third for this cassette. With first chain I made 1985km, but I already noticed a significant degradation ...
8
votes
3answers
2k views

how do I paint a bicycle chain?

I've seen chains with so many colours, white, red, you name it. I would like to give it a try (this paint job is intended for visual styling of the bike, nothing related to protecting it), but I have ...
3
votes
1answer
231 views

What chain is this?

I have a Viking Torino 21 speed road bike. The bike has Shimano Sora derailleurs. The chain is in need of replacing but I don't know what chain to buy. Here is a photo I have taken of the current ...
13
votes
6answers
4k views

New chain is pre-lubricated, should I clean it?

My new chain is totally coated in lube. I would never ride a bike with a chain like this normally. All that goop is just going to collect flotsam from the road and wear out the chain. Should I clean ...
2
votes
2answers
477 views

Can you use a SRAM 10-speed Powerlock with a Shimano chain/drivetrain?

I just bought a pair of SRAM Powerlocks for 10-speed chains. The packaging says that they can only be used with SRAM chains. Will anything nasty happen if I use it with a Shimano chain and cassette?
4
votes
1answer
413 views

Why is 2nd largest rear cog making clicking noise?

I have constant clicking noise from the 2nd largest rear cog on my cycle. It starts as soon as I shift into the 2nd gear either from 1st or 3rd gear. I have checked the following things - 1. Cable ...
3
votes
1answer
737 views

How to remove a Shimano Quick-Link?

I'm currently repurposing an old frame and replacing the drivetrain. If possible I'd keep the old 7 speed drive train the bike had together in case I ever find a use for it. The chain is an HG40 ...
1
vote
1answer
436 views

What Are the Widths of Shimano 8, 9, and 10 Speed Cassettes?

I was hoping that someone could provide me with the precise Shimano road-bike 8, 9, and 10 speed sizes for the following: Cassette Spacer Width Cog/Tooth Width Maximum Chain Width
6
votes
2answers
2k views

Is a 7 speed chainring compatible with an 8, 9 or 10 speed cassette and chain?

Currently I have a 7 speed cassette (13-23) running with a spacer on a new Tiagra hub. After I changed my chain, the wear has made two of the gears unusable. I am considering changing the cassette to ...
3
votes
1answer
227 views

smallest cog of cassette rubbing on seatstay

I built up a NOS late 90s steel frame with a similar era Campagnolo Chorus 9 speed groupset. Has gone well, except the stays/dropouts don't seem to quite like a 9 speed cassette. The second smallest ...
0
votes
1answer
208 views

Why are master links so expensive?

2.51 euro for a quick-link (the cheapest)? But this is not so different from just single chain link. Why such prices and not for a dime?
20
votes
7answers
4k views

How to achieve an always clean chain

My chain and cogs always look very dirty as the oil attracts dirt. It is a constant problem as you can't fully avoid stains on your trousers and hands. Also, that looks ugly and I believe it wears the ...
2
votes
1answer
83 views

when does a 1/8" chain need replacing?

I use a Park Tool device to check for stretch on my derailleured bikes - can the same tool be usefully deployed on a 1/8" 'track' chain, does anyone know? If not, how then to check for wear?
9
votes
2answers
5k views

How can I tell if a chain has a master link?

I need to remove the chain on my internal-hub cruiser to clean it (i.e., no rear or front deraileur), and I'd rather not remove my back wheel if I can avoid that. What do I look for to find the master ...
3
votes
1answer
359 views

Can a 10-speed chain be used with a 9-speed cassette?

I have an extra 10-speed chain I would like to use with a 9-speed cassette on my mountain bike. Will this combination work ok?
-1
votes
1answer
124 views

Upgrades/Repairs Mongoose XR-150 [closed]

First time posting here for bikes. I have an old wally world free xr-150. It was my favorite bike as a kid when it was all about fun. It's been sitting around for many years. No real rust or tarnish. ...
5
votes
1answer
2k views

Upgrading wheels on a vintage Peugeot Frame

OK so I have a Peugeot Galibier bike that consists of a Reynolds 301 steel frame. A while back the original derailer gave up the ghost while riding, bending the rear-wheel spokes in the process. I ...
0
votes
0answers
93 views

How can I prevent “chain suck”? [duplicate]

I know what the above is: when your chain bunches when you change gears & the bunch runs through the front derailleur and wrenches it. This damage is pretty much irreparable, and has cost me far ...
1
vote
3answers
534 views

Clicking noise from crankset

A month ago I bought a Scott Aspect 60, and for about a week everything was ok. Then, I started hearing a noise coming from the crankset. First thought was that it was the front derailleur - after ...