is this chain borked?

[Yellow Saddle]

So two thirds of the way to replacement, assuming wear is liner. (whole new can of worms)

For the sake of a tenner I'd replace it, as a ball saving temporary measure I'd take out the bust link.

If that unit of 0.5 represents having used up two thirds of the chain's life, I agree that replacing it is probably the most pragmatic approach. That doesn't mean though, that patching it for now with a quick link is wrong.

 

[subaqua]

Ok , all sensible answers which i agree with. No idea how it's happened and although i'm ....aaahh..eerr 15 stones, i almost never get out of the saddle and have always been concious not to put too much strain (in my opinion) through the drive train. Cannot have done 500miles on it yet, probably a lot less.

I was 22 stone and never did that to a chain so it wasn't "you" per se. for the cost of a new chain replace. and use the other chain and a bit of flat mild steel bar to make a chain whip.
re use of stuff is good

 

[subaqua]

Yes .5 on a park tools chain wear tool, I believe it is a percentage value.

i hate the 0.5 (50% worn) figure . the 0.75 is the order new chain event as it ultimately means not replacing the cassette early.

I did take my chain past the 1 ( 100% worn ) which proves its a bollox figure as if it was 100% worn it shouldn't work and should have no more wear available .

 

[subaqua]

[QUOTE 3712817, member: 9609"]I recently kept going with a chain and cassette until it stopped working 2.3% was the figure where it became unusable. The chain, Cassette and Chain Ring were all buggered.

I believe serious damage to other components sets in at 1%. It is probably good advice to replace once it passes the 0.5% mark. In fact going from my little test, wear sets in so rapidly at 0.5% that you may aswell change it then

in the following chart, miles versus mm for 12 links.
0.5% wear is at 306.3mm
1% wear at 307.8mm

[/QUOTE]


you need to get out more. and touch boobies n things i like the graph tho

 

[Tim Hall]

[QUOTE 3712304, member: 9609"]how was your chain originally joined ? I am wondering if this was the joining pin and had never been correctly put together in the first place.

measure your chain for wear - 12 whole links, and if your ruler only goes up to 300mm then just measure 11 links[/QUOTE]
No. If your ruler only goes up to 300mm, get one that goes up to 12 inches, like Sheldon intended.

 

[Yellow Saddle]

No. If your ruler only goes up to 300mm, get one that goes up to 12 inches, like Sheldon intended.

You mean Jobst?

12 inches is also no good 'cause you want 12 inches and 2/16ths at least.

These are of course rare animals because ruler makers like to stop at round numbers but I've found that the Parktool spoke ruler is ideal, it goes quite a bit beyond 12 inches without being a yardstick.

 

[Tim Hall]

You mean Jobst?

That would be an ecumenical matter.

12 inches is also no good 'cause you want 12 inches and 2/16ths at least.

These are of course rare animals because ruler makers like to stop at round numbers but I've found that the Parktool spoke ruler is ideal, it goes quite a bit beyond 12 inches without being a yardstick.

I take your point (indeed running out at 12 inches is a bugbear of mine), but really I was attempting to highlight the fact that measuring something that is made specifically in half inch pieces in mm is kind of illogical. It grates (maybe I should clean it).