Power links for 7 & 8 spd

BigAl
BigAl Posts: 3,122
edited January 2014 in MTB workshop & tech
I've been servicing the kids bikes after some very muddy rides lately. Decided to fit Powerlinks to both for ease in the future.

Now I thought 7 & 8 spd chains were the same. Indeed, when I asked for Powerlinks in the local shop, I got 3 (1 spare) KMC links which were all the same

The 7 spd bike has a KMC chain. Only markings on it are 'narrow' and a big Z in the middle of the links. Powerlink fits fine on this.

The 8 spd chain is a Shimano HG50 - again labelled 'narrow'. The Powerlinks will absolutely not fit this chain (I tried 2 of them) - seems the Powerlinks is too narrow

Any ideas? As I said I thought 7 & 8 spd chains were the same. Even if not, surely the 8 spd chain would be narrower, not wider?

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