6
votes
2answers
228 views

At what point does one need to replace a chain ring on a mountain bike?

The large chainring on my mountain bike is missing a number of teeth on one side (apparently the side I like to go over rocks on). Is it harmful to the drivetrain to ride without these if I'm not ...
2
votes
1answer
315 views

Are these chainrings the reason my chain skips/hops?

When I ride my bike normally, then chain skips like crazy. I know it skips in the front because I stuck some paper in the chain to see if it moved and it didn't. Chainrings:
4
votes
3answers
3k views

Can I replace chainrings without replacing the rest of the drive train?

I now ride a 60cm SurlyLHT with chain rings at 26/36/48t. Can I replace with a smaller set at 22/32/46t (or similar combination) without having to replace the entire drive train - cassette, rear ...
3
votes
4answers
3k views

Why are there almost no bikes with a single chainring?

Bikes with two or three chainrings are the norm, and then there are singlespeeds, but except for kids' bikes, you see almost no stock bikes with a single chainring in front but a cassette and ...
2
votes
1answer
263 views

When Installing chainrings which are pinned, how should I orient the chain drop prevention pin?

I'm setting up a double crankset with a new front chainring which is ramped and pinned. How should I orient the outer front chainring with respect to the chain drop prevention pin? Should this line ...
1
vote
1answer
503 views

Need help choosing compatible rear derailleur, cassette & chain

I just "inherited" a bike that has no rear derailleur or chain. It also looks like the cassette is pretty worn, so I'm thinking about replacing that too. I've looked around on the forum and I think ...
7
votes
4answers
6k views

Mysterious case: chain falling off large chainring, how to fix?

On my commuter bike I decided to rid myself of the small inner chain ring (which is almost never used) and front dérailleur (now redundant). However, I have come across an unusual problem. Whilst ...
13
votes
2answers
2k views

Is there a practical gain from elliptical/oval chainrings?

I have seen competitive (amateur) cyclists with oval chainrings (front). What is the deal? Are they just for showing off, or is there a practical gain from it (different force transfer).
6
votes
4answers
3k 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 ...