Dura Ace 9 speed chain

Jlewis3

Hello,

I recently chained chainset, cassette and chain on my bike.

I fitted the chain but at first attempt made it too big I have since made it the correct length but just simply removed links and reattached, was their a specific was of doing this that I have missed and is my chain likely to give up the ghost because of a weak link? Or is just simply removing links and reattaching the way to go?

Thanks
Josh

mamba80

if you used a 9sp shimano joining pin, or a quick link, then no problem but if you just reused the existing pin as per 5 and 6sp chains from yester year, then it will be a weak link and im guessing you wont be able to id the link/pin you joined the chain at? so no way of knowing where it is.

hdow

As Mamba80 said

Shimano Hyperglide chains must only be joined using the special pin provided or a quick link. The holes in the plates are not the same size on each side of the chain so if you simply reuse a 'deriveted' pin from the chain it is very likely to fail. New pins can be bough separately for around £4. Also there is something about inserting the new pin from the same direction as the old one was removed. Life really is too short to care about such things

I only found this out after 3 chain failures. One after 850km, one after 80km and the other after 20km. I now use SRAM chains on which pins can be re-riveted

HarryD

shadow4532

Hdow wrote:

I only found this out after 3 chain failures. One after 850km, one after 80km and the other after 20km. I now use SRAM chains on which pins can be re-riveted

and eveyone else uses a kmc quick link

ugo.santalucia

Don't worry too much about the nayers... I have re-joined many 9 speed chains and never had one fail... my take is that even a re-used link is better than a quick link

mamba80

ugo.santalucia wrote:

Don't worry too much about the nayers... I have re-joined many 9 speed chains and never had one fail... my take is that even a re-used link is better than a quick link

Well, this may be true, as I once stopped to help a guy who had a broken 9 speed chain, I used my multi tool to re join the chain, 4 weeks later I met him at a RR with the same bike and same fuggin chain! I thought "stay in front of him"
At the end of the race I asked how he got on, his reply " that bloody repair you did? it was rubbish, chain broke and I took out another rider"
Broken chains are a relative disaster for both the rider and those around him, so why take the risk? a joining pin is pence and new shimano chains come with 2 and QLs are also fine, only the shimano ones where dodgy, so they withdrew them from sale.

ugo.santalucia

mamba80 wrote:

ugo.santalucia wrote:

Don't worry too much about the nayers... I have re-joined many 9 speed chains and never had one fail... my take is that even a re-used link is better than a quick link

Well, this may be true, as I once stopped to help a guy who had a broken 9 speed chain, I used my multi tool to re join the chain, 4 weeks later I met him at a RR with the same bike and same fuggin chain! I thought "stay in front of him"
At the end of the race I asked how he got on, his reply " that bloody repair you did? it was rubbish, chain broke and I took out another rider"
Broken chains are a relative disaster for both the rider and those around him, so why take the risk? a joining pin is pence and new shimano chains come with 2 and QLs are also fine, only the shimano ones where dodgy, so they withdrew them from sale.

A multitool job is hardly ideal... I am talking about using a proper chain splitter and it'll work fine if you know what you are doing. There is no reason why it shouldn't work

mamba80

as I said it will work and it ll get you from a to b but it isn't a long term repair and you know it, Shimano 9/10 chains arnt designed for the pins to be re used but ultimately its your bike to do as you wish.

Jlewis3

Went out to do a hill session the other day and the chain just broke! Bought a quick release link today to fit but will also need some new pins. Might just decide to get another chain, and keep this one as a spare!

Lookyhere

When you push a pin out of a shimano link, the "riveted" end of the pin is sheared off by the link plate, so reusing it means the pin is only secured on one side of the link (there isn't enough pin to re rivet as per the old days), as mamba said, its a get you home measure and nothing more.
I would buy a new chain and keep this one for spares or to go on a turbo only bike, falling off 'cause of a broken chain will cost considerably more than £20 for a chain.