Broken chains

[Flying Dodo]

On the subject of chains I noticed when I fitted a brand new shimano 105 chain the other day that you can't just push out a pin and push it back in anymore

Do people carry those little single use chain pins with them now ?

I fitted a new 105 chain recently, and did it the "old fashioned" way and joined it with a chain tool.

 

[maltloaf]

When you push out a link on a shimano 10 speed chain it breaks a small loop of metal off. I noticed it on the push pin of the chain tool. Afaik, they aren't reusable after that.

 

[screenman]

I carry a chain tool, spare link, pump and a 26 and 700c in the car at all times.

 

[Flying Dodo]

When you push out a link on a shimano 10 speed chain it breaks a small loop of metal off. I noticed it on the push pin of the chain tool. Afaik, they aren't reusable after that.

That would happen with any chain, if the chain isn't properly aligned in the tool, as it has to be exactly aligned at 90° to the chain tool pin. On 6-8 speed chains it doesn't really matter if that happens, but it's vital on 10 speed that you break the chains very slowly and carefully, due to the smaller tolerances. That issue can also happen if your chain tool isn't 10 speed compatible.

 

[maltloaf]

As I understand and have read elsewhere (although admittedly I cannot find the reference now), they intentionally break and are intentionally not reusable.

Edit.. Found this.. Is it incorrect ? Seems plausible.

http://www.cyclechat.net/threads/why-do-shimano-chain-connecting-pins-exist.36698/

 

[Flying Dodo]

Possibly - although I've been (carefully) splitting 10 speed chains for about 5 years now without any issues. The only time I've ever had a chain break was the one time I used a KMC link!

 

[arranandy]

The chain broke on my winter bike back in November, unfortunately I didn't have a chain tool or a KMC link thingy. Therefore I had to phone 'her indoors' to come and rescue me and the bike. She did this without a single word of complaint.

Cost me a bottle of wine to appease her

 

[Deleted member 1258]

I've only broke a chain once, many years ago, the 1/8 chain on my fixed, the chain was knackered and due for replacement, might have something to do with it breaking, when it broke it nearly launched me over the handlebars, then it whipped back and wrapped round the hub locking the rear wheel up.