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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2answers
190 views

Shimano FD-M191 replaced with Shimano FD-M590

just replaced Shimano front derailleur (FD-M191) to FD-M590. And problem appears, on smallest cog chain rubs lightly on left side, and on biggest cog on right side. Just can't lower derailleur more ...
3
votes
1answer
208 views

Brand New bike, chain slips into spokes on first gear

I just bought my first bike as an adult with the intents of biking to work. This bike is brand new, is the Schwinn Admiral 700c from Walmart. I get it home and whenever I shift into first gear the ...
5
votes
2answers
3k views

New Chain causing skipping on cassette - will this work itself out or is it unsafe?

I just installed a new chain on my 2002 Trek 2200 Road Bike. The old chain was a Shimano 9 speed that I installed 18 months and about 5000 miles ago. It had stretched modestly and was full of winter ...
13
votes
5answers
7k views

What is the easiest way to fix a loose chain?

Are there adjustments that can be made instead of replacing it?
1
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1answer
107 views

Chain Slipping?

I am not the most knowledgeable when it comes to bikes so please bear with me. I have a Claud Butler and after fixing a puncture I decided to ride it. As I was riding, I could hear a sort of rattling ...
3
votes
1answer
148 views

Chain Splitter vs. Chain Tool vs. Chain Breaker

What is the difference between a Chain Splitter and a Chain Tool and a Chain Breaker? Are they the same thing?
2
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1answer
181 views

How dirty should the chain and the cogs be before I should consider cleaning them?

I'm new to bicycling and have been riding for a month or so. I just saw a few questions here regarding cleaning of the chain and thought "whoa, I should clean the chain". How dirty (visually) should ...
0
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1answer
67 views

How to reuse a rim after the brake edge has been damaged [duplicate]

My chain fell of and got stuck a few days ago (i ride fixed gear) and made a real mess of my back rim. I noticed 2 marks on the brake edge of the rim where the chain scraped along. they are not very ...
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1answer
513 views

Specific 10 speed chain models that work well on 9 speed Shimano rear drivetrains

I maintain several 9-speed (rear cassette) road bikes (Giant OCR 1/2/3, Tiagra and 105 from 2000-ish era) and one 10-speed rear cassette 105 road bike, made in 2007. I'm trying to find out if I can ...
1
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5answers
216 views

Adjusting gear ratio

I currently ride a single-speed converted bike (vertical drop-outs). I like the ride but feel that when I'm going for high speed on the road, I'm pedaling too much. Currently running a 18T cog on the ...
1
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1answer
114 views

Upgrading cassette - what do I need to be aware of?

I'm looking to replace my rear cassette and reduce the tooth count between the sprockets in order to make my gear changes less dramatic. I currently have a 11/26 9 speed SRAM cassette, and a stock ...
3
votes
1answer
144 views

Rear wheel at edge of dropouts on a Surly Cross Check

The rear wheel on my Surly Cross Check is right at the edge of the rear dropout but the chain is tensioned correctly. If I move the wheel back into the dropout so it is comfortably in the middle, I ...
13
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7answers
34k 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
2answers
1k views

Why did the chain on my kid's bike slack after I changed his tire?

I changed the rear wheel on my child's bicycle today. Once I was done and put it back together, the chain is inexplicably longer; there is a lot of slack. How did this happen and how do I resolve ...
2
votes
1answer
111 views

Will I snap my derailleur? (too large front chainwheel)

I have an old racer (1994 Specialized Epic Allez - lugged carbon) that's in pretty good shape. I brought it to an LBS that's got a pretty good reputation and that I've used before, to change the chain ...
1
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0answers
149 views

Gears jumping/slipping from the rear cogset on a new bike

Its been 1 month since I have bought my new MTB (Kross globate 1.1) with 18 gears (shimano).. Now the problem is chain has slipped twice while riding. First time my speed was around 25kph and second ...
1
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1answer
379 views

Can you take apart rear derailleurs, and how do you put them back together again?

I recently took apart my rear derailleur as it was on a 10 year old bike and really old and stiff. So I thought I would unscrew both jockey wheels and clean them, they had a silver bit either side, ...
4
votes
1answer
590 views

Are Campagnolo and Shimano 11 speed chains interchangeable?

I have an Athena 11 speed group set, but can get a good deal on the Shimano 9000 chain. Does anyone know of any reports of issues combining the two?
3
votes
3answers
1k views

Are chain-drive gears 'ridiculously' efficient even when dry of oil?

Allegedly chain-drive gears are something like 99% efficient when well oiled and something like 98% efficient when without oil. Personally I do not like the noise a dry chain makes, this has a 'I ...
1
vote
1answer
348 views

Chain not fitting chain ring

I just bought a 21-speed hybrid bike (Wal-Mart grade Schwinn) and to try to customize/simplify things (other bike is a fixie road bike), I removed the front deraileur and bought a new single-speed ...
2
votes
0answers
164 views

Chain drops in smallest gear under load

I'm baffled. I installed a new chain, cassette, cables and housing yesterday. On the stand, all is happy and shifting is silky smooth. On the road all seems happy except on the bigger cogs in back (in ...
3
votes
5answers
1k views

Properties with Belt-driven Chains?

This reply about belt-driven belt got my interest here. It does not need lubrication at all according to the replier. What are other properties with belt-drive chain? Where does the idea come from? ...
1
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1answer
279 views

Would an original Abloy padlock and [toughened] chain make a good bike lock?

Why are bike locks so fancy, so specialised? Would a small padlock, e.g. original Abloy make a good bike lock when connected to a chain? http://simple.wikipedia.org/wiki/Abloy (first image) Are ...
5
votes
5answers
403 views

When to lube a chain?

Should a chain be lubed each time after riding in the rain*? What about a 100km mudride (occasional water up to the hubs)? Should I stop in the middle of the ride to re-lube the chain? If so, is it ...
0
votes
2answers
168 views

WD40 on Single-Speed Chain [duplicate]

Simple Question: May I use WD40 to lubricate my single-speed chain? Does it not have any negative effects in terms of the chain performance and biking in general?
0
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0answers
95 views

How do I fasten my loose chain guard?

I have a dutch bike and over time the chain guard has come loose. It falls down and ends up resting on the chain. The problem is that I can't see a obvious way to fix it. There is no external bolt or ...
4
votes
1answer
1k views

How to mount SRAM snaplock?

I am trying to join PC-1 SRAM chain, it has such snaplock: And the problem is, the distance between holes is slightly less (IMHO) than distance between the pins. Every hole on its own fits any pin, ...
4
votes
1answer
287 views

Rotating 2 chains on one cassete

I clean my chain on the bicycle, mostly because taking it off for a bath, drying, etc seems to take more time than I have. But maybe I could use 2 chains in rotation, I would take one chain off, ...
4
votes
1answer
542 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
596 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
142 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
2answers
105 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 ...
2
votes
4answers
488 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
346 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
191 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
112 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
220 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
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2answers
761 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
196 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 ...
20
votes
4answers
113k 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 ...
1
vote
2answers
203 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
8k 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
277 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 ...
1
vote
3answers
319 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
271 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
129 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
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2answers
640 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
172 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
129 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 ...