Chain rings

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philw80
Posts: 410
Joined: Sun May 13, 2012 20:08 pm

Chain rings

Postby philw80 » Wed Feb 27, 2013 20:17 pm

Currently using a compact, but think it might be worthwhile pushing back up to a full size ultegra chain set-can you just replace the chainrings on ultegra 6700? Or will I need to get a new crankset?

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coriordan
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Joined: Fri Jun 10, 2011 21:11 pm

Re: Chain rings

Postby coriordan » Wed Feb 27, 2013 21:12 pm

New crankset sadly.

The BCD (distance of the chainring bolts from the centre of the crankset) is different. 110 for compact, 130 for standard double.

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ShutUpLegs
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Joined: Sun Oct 24, 2010 19:07 pm

Re: Chain rings

Postby ShutUpLegs » Wed Feb 27, 2013 21:30 pm

Stick with the compact unless you want to join the big boys.
I Like Black Bikes

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Rolf F
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Joined: Sun Oct 26, 2008 09:29 am

Re: Chain rings

Postby Rolf F » Wed Feb 27, 2013 21:34 pm

coriordan wrote:New crankset sadly.


No, he's going compact to standard, not vice versa so it does work.

Eg 110 bcd 53 - http://www.spacycles.co.uk/products.php ... b2s149p296
110 bcd 39 - http://www.spacycles.co.uk/products.php ... gb&vid=694

Stronglight and TA tend to do more interesting options!
Faster than a tent.......

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coriordan
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Joined: Fri Jun 10, 2011 21:11 pm

Re: Chain rings

Postby coriordan » Wed Feb 27, 2013 21:39 pm

Yeah just researched actually. Found this:
http://weightweenies.starbike.com/forum ... =3&t=92005

Apols

philw80
Posts: 410
Joined: Sun May 13, 2012 20:08 pm

Re: Chain rings

Postby philw80 » Wed Feb 27, 2013 21:57 pm

Cheers guys.....is changing the rings faily easy?

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coriordan
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Joined: Fri Jun 10, 2011 21:11 pm

Re: Chain rings

Postby coriordan » Wed Feb 27, 2013 22:27 pm

Yep. Should just be a allen key and a large flathead screwdriver.


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