Short cage or long cage RD for 32t cassette on single chainring?

Discuss light weight issues concerning road bikes & parts.
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Ed209
Posts: 32
Joined: Wed Jul 08, 2015 1:55 pm

by Ed209

I am building an 1x11 speed Di2 groupset. The cassette I plan using is 12-32.

I know normally a short cage ultegra Di2 RD is rated up to 28t cassette when used with double chainring, but is this because the short RD can't take up the slack when used with a wide range cassette (as opposed to simply CLEARING the cassette)?

With a 1x setup, there is less chain length range between top and bottom gear, so less slack for the RD to have to take up; do you think this means a short Ultegra 6800 RD on a 1x setup can handle 32t cassette, or is it a cassette clearing issue?

ooo
Posts: 529
Joined: Sat May 21, 2016 12:59 pm

by ooo

ss is better for this setup
'

Ed209
Posts: 32
Joined: Wed Jul 08, 2015 1:55 pm

by Ed209

Great, thanks.

So the short cage shouldn't foul the 32t cog?

ooo
Posts: 529
Joined: Sat May 21, 2016 12:59 pm

by ooo

yes, ss even good for double setup with 32T, tons of examples on youtube

https://www.youtube.com/watch?v=wIem0hD86IU
'

Ed209
Posts: 32
Joined: Wed Jul 08, 2015 1:55 pm

by Ed209

Can't argue with that. Perfect. Cheers.

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