Ultegra rear mech help

by peted76   May 6, 2014  

Hi guys,
Looking for gearing help, I'm putting together a new bike and upgrading the groupset, however I've started pulling out my hair a bit... please can anyone help?

I'm upgrading to a Ultegra groupset (6700), running a 11-28 rear cassette on a compact 50:34t
Question: Should I run a short cage or a medium cage on the rear mech ?

thanks in advance

6 user comments

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You have a 33 tooth difference (28-11+50-34). Ultegra 6700 short cage mech has a capacity of 34 teeth (cf. Wiggle's spec page).

Short cage looks nicer and has enough capacity, so go with that.

posted by srchar [60 posts]
6th May 2014 - 13:10

1 Like

shimano's own tech blurb says 28t max so you're good to go with
the better looking SS Smile

http://techdocs.shimano.com/media/techdocs/content/cycle/SI/SI_5X90B/SI-...

still on the 3rd switch-back of Bwlch !

posted by therevokid [726 posts]
6th May 2014 - 13:29

1 Like

Thanks guys, that is brill!

posted by peted76 [19 posts]
6th May 2014 - 13:38

0 Likes

Or get a medium cage if you may be thinking of using a 32t eg on alpine climbs. Negligible weight difference.....

I have Dura Ace but have an Ultegra long cage for a 32 Ultegra block I will use for the E'tape.

Shamblesuk's picture

posted by Shamblesuk [86 posts]
6th May 2014 - 15:00

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Why would you need a 32 if you're running a compact? Not quite sure why you'd need a 28 with a compact, but there we go Rolling On The Floor

posted by Al'76 [126 posts]
6th May 2014 - 16:03

1 Like

that bait is really smelly Wink

posted by keirik [30 posts]
6th May 2014 - 17:48

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