On 9/9/2017 11:40 AM, Emanuel Berg wrote:
AMuzi wrote:

Overall width. 4/5 speed systems used very
wide chain as you may recall. To get 8, 9,
10, 11 sprockets inside the 130mm road format
(originally seven speeds) the sprockets are
closer and so the chain is smaller.

Is it enough to count the sprockets,
e.g. does an 8 sprocket casette always have the
same width? Or does that vary
between manufacturers?

And surely there aren't different chains for
8, 9, 10, and 11 casettes, i.e. four different
chain sizes?


Surely you jest!
There are variants within each format. Plus 12 speed now.
Four chain models is not a shop inventory - it's nothing.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971