Old 03-26-11, 08:40 PM
  #6  
Barrettscv 
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Bikes: Ridley Helium SLX, Canyon Endurance SL, De Rosa Professional, Eddy Merckx Corsa Extra, Schwinn Paramount (1 painted, 1 chrome), Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Raleigh Roker, Pedal Force CG2 and CX2

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Originally Posted by Andy_K
Actually, I'm going to offer a contrary opinion. I've never tried it with Ultegra, but I had a Tiagra road derailleur setup once with an 11-32 cassette. It shifted OK, but the derailleur hopped a little when the chain was on the big ring, like it was bouncing on shift ramps or something. I swapped in a MTB derailleur because that was my primary bike, but it would have been mostly OK like that.

Of course, this is assuming that you have the mid-cage derailleur. If your derailleur is short cage, it won't even be close.
I mentioned that the "GS" (long arm Ultegra) could work. However, he has the SS (short arm Ultegra), so he would need to change derailleur in any case.
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