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PostPosted: Fri Jan 09, 2015 10:31 pm 
Dirt Disciple

Joined: Tue Sep 09, 2014 1:42 pm
Posts: 34
Location: Cambridge
Basically upgrading to 10 speed dura ace 7800, would I need to change the crankset?

Currently using FSA Carbon 50/34 (Ergomo branded)
Bottom bracket: Token

Here is the bike



PostPosted: Sun Jan 11, 2015 12:01 am 
Gold Trader / PoTM Winner / RB Rider
Gold Trader / PoTM Winner / RB Rider
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Joined: Wed Oct 05, 2005 7:45 pm
Posts: 11034
Location: kent
probably not .

you may need to change the rings to go with a new chain .

 Post subject: Re:
PostPosted: Sun Jan 11, 2015 12:06 am 
Gold Trader
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Joined: Fri Aug 20, 2010 11:28 am
Posts: 7277
Location: Gorleston-on-sea (If there is a bright center to the universe this is place furthest from it
Not the cranks, but deffo need 10 speed rings :wink:

 Post subject: Re:
PostPosted: Mon Jan 12, 2015 10:39 am 
Retro Guru
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Joined: Sat Oct 01, 2011 9:51 pm
Posts: 515
Location: Surrey
Just try it as generally the front rings don't pose a problem. The chain pitch is the same its just the width. You will need some fine adjustments on the FD thats all;

Sheldon's comment re Front

Chain: As you go to more sprockets on the cassette, you need a narrower chain. However, using a chain one size narrower than standard rarely presents any problem. Thus, you can use a "9-speed" chain with a 7-speed or 8-speed system, or a "10-speed" chain with a 9-speed system. This is not the ideal approach -- shifting may not be quite as smooth -- but it's workable.
Narrow chains bring other problems, though. They are usually more expensive and -- with 10 or more speeds -- don't last as long -- even when used in the intended system.

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