Chain failed on me while sprinting and I ate dirt pretty bad. Installed this chain couple months ago and not rode much so I doubt its wear. I think it failed at the joining pin. Any ideas of how this happened. (Probably my fault installing it)
by Seligmaster69
12 Comments
there are pins specifically used for chain installation. modern pins have rivets that break when you break the chain, so you can’t break the chain and put it back together with the same pin you broke. It has to be replaced with a shimano chain pin or quick link.
Almost always a bad downshift under power earlier in the ride
What’s it like to have that much power?
Cavendish is that you?
But seriously I’m curious how you installed the chain and if the chain was legit or fraudulent.
This chain appears to be neglected. Rust. That said , it’s not necessarily what caused the break. I would replace this chain with one that uses a quick link( pretty much all current chains). They are pretty cheap. Not worth repairing a chain in this condition.
Lastly, SERVICE YOUR CHAIN. lubricate your chain. Inspect it while doing so and you can avoid this kind of failure.
Hope this helps, and happy cycling!
it looks like the pin was not inserted correctly. If you look at the plate closest the pin is not fully inserted.
Your legs pawa
Age and no srrvice
Joining pins need to be installed just right, and if you reuse a chain pin as a joining pin it’ll never be as strong. Just use quick links if it’s not an emergency, they’re far more reliable and much easier to install correctly.
Joining pins usually have a flat-ish or raised surface on the side you break off. From the photos to me this doesn’t look like a joining pin since both ends appear to be dimpled.
So assuming you didn’t press in a normal pin it’s at least not faulty chain installation. Could be a bad (counterfeit) chain or bad shifting.
Replace and ride on!
what caused you to fall? I have had many chains break, usually you feel/hear it a little before. it was almost always because of refusing a pin.
Might be wear and tear, but also could be from shifting under load.