Compacts advice please

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Eleri
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Joined: 31 Dec 2009, 08:43
Location: Erskineville

Postby Eleri » 25 Nov 2012, 20:23

If I want to put compact cranks onto the Ultegra Di2 for the Alpine Classic Extreme, do I have to get a whole new crankset or can I just change the chain rings? Does it matter that it's Di2 (other than I have to retune it)? It's a 6700.

Or could I just swap it off my other road bike which is also Ultegra 6700 and has compacts?

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T-Bone
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Location: Up the Hill

Postby T-Bone » 25 Nov 2012, 21:17

You should be able to just swap the crankset over from the other bike, with possibly a slight adjustment to the front derailleur.

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weiyun
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Location: Birchgrove
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Postby weiyun » 25 Nov 2012, 22:31

CT chainrings runs a different spacing for its bolts, so you'll need a CT specific crankset. Don't forget the chain length may need adjustment too.

Richard
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Joined: 06 Sep 2009, 21:04
Location: Ashfield

Postby Richard » 26 Nov 2012, 07:33

Shimano 6700 compacts are 110mm bolt hole centre diameter, the 53-39 is 130mm.

Have to change over the crankset

The new 11 sp Dura-Ace 9000 series cranks are 110 BCD regardless of the chain rings

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Eleri
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Joined: 31 Dec 2009, 08:43
Location: Erskineville

Postby Eleri » 27 Nov 2012, 20:35

Thanks for that advice - very helpful!


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