Changing chain before fully worn to get away with replacing cassette

[Fifelad]

Wondering what the opinions were, my road bike chain is over 75% worn but not quite 100% worn. Will I get away with changing it but not the cassette ? or am I passed the point of no return and would be as well getting more wear out it and repling the cassette at the same time ? Previous experience the chain if not fully married in will skip.

 

[MikeW-71]

Yes, you should. If you don't let the chain get too worn, you should get about 3 chains to one cassette. I did exactly that and it was absolutely fine.

If you fit the new chain and it slips on the cassette, then it was too worn and you'll need the new cassette anyway.

 

[Fifelad]

Yes, you should. If you don't let the chain get too worn, you should get about 3 chains to one cassette. I did exactly that and it was absolutely fine.

If you fit the new chain and it slips on the cassette, then it was too worn and you'll need the new cassette anyway.

Do you change at 75% or nearer the 100% ?

 

[HLaB]

Chain checkers are over pessimistic IME, I stopped using one a while back, going by them I'd be changing cassettes every second month. Buy the new cassette but don't fit, if the new chain doesn't slip, keep the cassette for the next time

 

[JoeyB]

How are people getting these percentages? What's a chain checker? Am I missing some cool tech or is it a gimmick?

 

[Citius]

What's a chain checker? Am I missing some cool tech or is it a gimmick?

A chain checker is (quite literally) a marketing tool - designed to boost chain sales....

 

[HLaB]

How are people getting these percentages? What's a chain checker? Am I missing some cool tech or is it a gimmick?

Not really

 

[zacklaws]

Chain checkers can be innacurate and indicate a chain to be worn when it is not. A chain checker measure distance between roller to roller but to show elongation you need to measure pin to pin. There is only one recomended chain checker which is accurate, but I cannot remember which make it is or remember what website it is that goes into detail about the innacuracies of chain checkers. The best tool to use or if in doubt with a chain checker, use a 12 inch ruler.

 

[Drago]

You mean a 12" rule?

 

[zacklaws]

12 " Ruler or Rule, is there a difference? is one slightly longer than the other?

 

[G3CWI]

http://pardo.net/bike/pic/fail-004/000.html

Shimano TL-CN42

 

[Drago]

12 " Ruler or Rule, is there a difference? is one slightly longer than the other?

One is a rule, intended for making measurement of up to 12".

The other is a King or Queen.

 

[MikeW-71]

Do you change at 75% or nearer the 100% ?

No idea what the percentage is, I use a 12" rule to measure and replaced when the 12" mark was at the edge of the pin instead of the centre. Perhaps I could have left it longer, but it took 2800 miles to reach that point and that seemed reasonable

 

[JoeyB]

A chain checker is (quite literally) a marketing tool - designed to boost chain sales....

Not really

I like my built in chain checker. When everything feels rough and a chain clean and lube doesn't fix it....it must be time for a new chain lol

 

[Nigelnaturist]

I measure by a ruler, and usually get about 3,000 miles.