Kmc quick link

[mark st1]

I didn't even know they did a non-reusable one tbh. Not that I've ever purchased one but all my other chains had re-usable ones as standard.

Thanks all for all the comments though much appreciated

 

[Kestevan]

Believe the 11spd ones are marked as 1 use only*.... They're certainly a bugger to take off without the link pliers.

* I've re-used them a number of times with no apparent ill effects..... YMMV.

 

[Yellow Saddle]

[QUOTE 4866923, member: 9609"]here is one at 1.54% (1500mile) wear that I have just took off this morning, it will have been on and off a dozen times and it still has a click strong enough not to allow me to join it using my fingers. It will be going back.

comparing with an unused link (don't know the diff between 6L & 5L is ?)
View attachment 360353 View attachment 360354

notice the polished area on the pin where the wear takes place, but the most noticable wear is on the side plate.
View attachment 360352 [/QUOTE]
Thanks
They wear of course just like any other link in a chain and wear doesn't affect their retention, only repeated fitting and removal without lateral compression.

I would certainly say that the used link has suffered some damage at the pinch section compared to the new link. Unfortunately the photo is blurry just at the critical point.

The wear on the side plate is why I laugh off PTFE coated chains. In that region PTFE wears off within kilometers.

 

[migrantwing]

I have two KMC 10 speed links that look very different, and one generic cheapo Chinese 10 speed link.
#1 KMC link has CL559R stamped on it at one end and KMC at the other.
#2 KMC link has CL559R stamped on it at one end and KMC- 8J stamped at the other end. It is also, as the OP states, a lot tighter than the other link.
I think the 8J link is the newer one that came in the box with a new chain.
I'll get photos to show the differences.

 

[migrantwing]

Obvious differences.

 

[migrantwing]

I emailed KMC for some info regarding all the different QL's out there. I've yet to hear back from them.

 

[DaveReading]

I emailed KMC for some info regarding all the different QL's out there. I've yet to hear back from them.

A bit old, but might be of help:

 

[2old2care]

[QUOTE 4866923, member: 9609"]here is one at 1.54% (1500mile) wear that I have just took off this morning, it will have been on and off a dozen times and it still has a click strong enough not to allow me to join it using my fingers. It will be going back.

comparing with an unused link (don't know the diff between 6L & 5L is ?)
View attachment 360353 View attachment 360354

notice the polished area on the pin where the wear takes place, but the most noticable wear is on the side plate.
View attachment 360352 [/QUOTE]
These are photo's of KMC's non re usable quick links as shown on their website.
https://www.kmcchain.com/en/series/chain-connector-12s-11s-10s-9s-8s-7s-6s-speed
The notch on the back of the link and the corresponding indentation on the front indicate this.

 

[DaveReading]

Interesting that they quote "3-5 times" for their re-usable links.

 

[Deleted member 26715]

Cant get the little fecker undone ! Had a few

Wait till you sober up & try again.

 

[Ajax Bay]

Interesting that they quote "3-5 times" for their re-usable links.

Well reasonably, a reusable link will only be used that many times: once to fit, a few times to remove chain to clean (for those that clean their chains that way - I do so about 3 times in a chain's 3000 mile life); and that's it. New chain: new reusable link, and repeat.
I opine that (based my experience of sorting out others' chain failures by the road/at the pub) the chances of a Shimano (or other) chain joined in the age-old manner of forcing a pin back in has a much higher chance of failure than using a 'quick link'.

 

[Ajax Bay]

Have just replaced my chain ready for PBP. The KMC leaflet with the chain (and link) says: "Caution: Suggest to replace a new Missing Link when it is worn or after locking and unlocking 3 times."

 

[migrantwing]

A bit old, but might be of help:

Much appreciated

 

[Sharky]

And what is the roadside fix for a bent chainring?

a bigger rock