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PostPosted: Thu Jun 28, 2012 9:11 pm 
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Joined: Tue Oct 28, 2008 9:00 pm
Posts: 404
Location: London, United Kingdom
I currently have a 50/34 Fulcrum RS crankset.
Can I just buy the 39/53 and swap them out or is my spider too small?

For example, is it really true that I can buy both 39T and 53T for £98? http://www.i-ride.co.uk/fulcrum/road_sp ... nring.html


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Posted: Thu Jun 28, 2012 9:11 pm 


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PostPosted: Thu Jun 28, 2012 9:49 pm 
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Joined: Mon Jul 26, 2004 8:57 pm
Posts: 787
Location: Ireland
Fulcrum like Campagnolo are 110bcd with one being set at 113mm therefore the only chainrings that fit need this bolt pattern :
http://www.parker-international.co.uk/1 ... nring.html


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PostPosted: Fri Jun 29, 2012 5:22 pm 
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Joined: Fri Jun 20, 2008 9:42 pm
Posts: 57
The fulcrum 53/39 rings are made for a standard 135mm bcd crank and wont fit on the 110/113mm bcd compact crank. There are aftermarket chainring that will fit, like the TA rings linked to above. I put TA 52/36 rings on my Fulcrum RS compact crank and they have worked very well.


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PostPosted: Mon Jul 02, 2012 9:33 am 
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Joined: Tue Oct 28, 2008 9:00 pm
Posts: 404
Location: London, United Kingdom
Thanks!


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