18t sprocket in a shimano cassette

[yenrod]

Does anyone know if their is a sprocket available from Shimano WITH a 18tooth - in, say, 13-25 combo ????????

For when I ride, the jump from the 17 to the 19 is irritatingly noticable.

 

[DJ]

Shimano do an 18 tooth sprocket, not sure if you can get it in that combo though?

I think it is speciffically for BMX!

 

[andy_wrx]

AUSHTA
(as usual, Sheldon has the answer !)
http://www.sheldonbrown.com/k7.htmlAssuming you're talking 10sp, you're limited to 12-21 or 12-23 if you want an 18, as you say 12-25 or 12-27 jump from 17 to 19.

 

[andrew_s]

There's an Ultegra 6600 13-25 10-speed
13-14-15-16-17-18-19-21-23-25
http://www.totalcycling.com/index.php/product/parts_accessories/cassettes_road/cs6600.html

You'll notice that 10-speed was Dura-ace only when Sheldon's page was compiled.

 

[fossyant]

That's the problem with hyperglide - you can't buy individual sprockets....and the 'upper' level cassettes have the top 4 or so sprockets 'fixed' together.

Bring back UG cassettes I say....you could buy them singularly, and swap them about.

On the other hand, Machissimo (or how ever it is spelt) do sprockets - not cheap.

 

[yenrod]

That's the problem with hyperglide - you can't buy individual sprockets....and the 'upper' level cassettes have the top 4 or so sprockets 'fixed' together.

Bring back UG cassettes I say....you could buy them singularly, and swap them about.

On the other hand, Machissimo (or how ever it is spelt) do sprockets - not cheap.

I've friend of mine looking out for me - for a knackered sprocket set but when n if that turns up still - not a big deal !