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Old September 9th 17, 06:23 PM posted to rec.bicycles.tech
Sir Ridesalot
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Posts: 5,270
Default program to compute gears, with table

On Saturday, September 9, 2017 at 12:40:29 PM UTC-4, 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?

--
underground experts united
http://user.it.uu.se/~embe8573


All you have to do is search the web under bicycle chain widths and you'll seethat 5 speed, 7 speed, 9 speed, 10 speed and 11 speed chains are ALL different widths to cope with the narrower spacings between cogs and also the thinner cogs.

Cheers
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