The cogs (gears) at the front of your drive chain, connected to the cranks.

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4
votes
2answers
4k views

What are common causes of premature chainring wear?

My bike mechanic told me today that my front chainrings are starting to wear out and I should consider replacing it soon (with my next chain replacement). The cassette is still in good condition and ...
15
votes
6answers
16k views

Does this chainring need to be replaced?

Here is a closeup of my triple: All three rings are Shimano Ultegra and have never been changed. They probably have at least 12000+ km on them. I've been pretty good about changing the chain ...
1
vote
2answers
3k views

How to replace broken chainring that is missing a tooth

I was going to ask if I need to replace it but I'm certain the responsible answer is yes (comments welcome). How do I find and replace the outer chainring? Specifically find the right model or ...
2
votes
2answers
561 views

Replacing a Force Chainring with a Red

Is it possible to replace a compact 50T chainring from my Sram Force set-up with a 50T Red chainring, they both have the same 110 PCD so I don't see a problem, does anyone know if I'm wrong? Thanks
7
votes
1answer
4k views

What physically makes chainrings have a specific speed compatibility?

Chainrings are sold as having a specific compatibility for only certain speed setups, some overlapping across many. What physically makes this the case? From what I understand, 5/6/7/8/9 speed chains ...
2
votes
1answer
407 views

Biopace chain rings and front deraileur rub

Turns out my front chain rings are biopace, after I thought they had disappeared! I've got a problem with the chain rubbing the front deraileur at a certain point every rotation. I only get this in ...
1
vote
2answers
894 views

Are chainring bolts interchangeable?

I have an 11 speed Athena chainset, and I've stripped one of the chainring bolts. It's £40 for a replacement Campag set! Can I just buy Race Face at £4.70 and expect them to fit?
10
votes
3answers
13k views

Do cassettes and chains need to be replaced at the same time?

Someone recently told me that if I replace my cassette I need to replace my chain (and vice versa) so that they wear evenly. Is this true? And, can anyone elaborate on the reasoning for this a bit ...
0
votes
2answers
217 views

Is there a way to know what size of smallest chainring will be compatible with a given frame?

I've been slowly changing a Devinci Milano I bought to be more like a touring bike than a hybrid. I've installed drop bars and sti shifters. Everything is working pretty well, except that I'd like to ...
5
votes
2answers
1k views

Can I run a dual crankset with a chain guide tensioner?

We recently got a new mountain bike for my son via craigslist, it is a couple year old Transition Bottle Rocket and came with a E-Thirteen SS+ chain guide/tensioner. He would like a lower gear for ...
4
votes
4answers
821 views

Cruiser bottom bracket is clicking and grinding

My Trek Pure Deluxe 3-speed cruiser has been making a clicking noise when riding for some time. The problem is faint, and is more felt than heard. However, it's been getting worse; it now makes a ...
2
votes
2answers
587 views

BBB chainring will not fit

As a follow up from my previous question I decided to change my Campag Veloce 53T chainring. I bought a BBB 50T chainring. I tried to fit it over the weekend but it wouldn't fit. I think the problem ...
3
votes
3answers
879 views

Chainring: cheap vs expensive

What am I getting out of a $55 chainring vs a $25 one? Are more-expensive ones longer-lasting, or more lightweight, ...? This is for a $700 single-speed, to give you an idea of quality of bike I'm ...
1
vote
3answers
1k views

Can a greasy chain cause the chain to come off the rings?

I heard once that you should clean your chain with a light degreaser whenever it looks especially dirty or at the very least once every few months. But that doesn't account for frequency of rides or ...
2
votes
1answer
11k views

Shimano Chainring Compatability

In my previous question we determined that I probably need new chainrings. I was/am planning on replacing the chainrings, and leaving the original crank. Now this bike is running Shimano 105 FC-5600 ...
7
votes
2answers
7k views

if I replace chainset and chain should I replace back cassette as well?

I am replacing my chainset and chain, as its totaly worn and causing the chain to jump off when I pedal. The cassette is fairly worn too, but is not causing any problems. If I buy a new chain and ...
1
vote
2answers
370 views

mountain bike chainsuck, replacing parts while thinking of future upgrades

I have been having what I believe is called chainsuck for a while now. Chain will get stuck between first and second ring and have to stop and pull like "%&$* to get it out. It is always the ...
1
vote
1answer
457 views

upgrading gears to Shimano XT

My bike is a ClaudeButler CapeWrath D24, with Shamino Alivio gears front and back. I was thinking it would be good to upgrade these to something like Shamino XT, at least on the front to start with. ...
1
vote
1answer
1k views

Truvativ Firex chainset replacement middle 32 tooth chainring & bolts

I have a Truvativ FireX chainset from 2008ish, I'm looking for a replacement middle chainring however, no shops seem to stock replacements for Truvativ chainsets. Just wondering if anyone has any ...
3
votes
1answer
467 views

Chainring and cassette compatible?

I've got a 20 year old Cannondale mountainbike (model # scratched off long ago). It's been used as a daily commuter for a few years and for a couple long trips. I've been told that the original ...
6
votes
4answers
5k views

How much distance can I put on drivetrain components?

I figure the jockey wheels on my derailer will last nearly forever, but what about the rest: cassette, chainrings, and chain? How many miles, kilometers, or furlongs do they normally last? I know ...
6
votes
2answers
3k views

How can I keep my chain from falling off the inner chainring? (specifically, from getting stuck in the bottom bracket)

I've got a mountain bike which occasionally drops the chain off the lowest gear, and then the chain gets stuck in the bottom bracket. This happens while pedalling. Once the chain is there, it takes ...