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 Post subject: Ultegra FC-6800 options
PostPosted: Sat Jun 21, 2014 8:23 am 
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Joined: Tue Apr 23, 2013 9:05 pm
Posts: 30
Hello,
I wonder if it's possible to fit 36t inner ring to compact crank with 50t big ring?
AFAIK BCD is the same but Shimano offers only 50/34, 52/36, 53/39 setups.


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PostPosted: Sat Jun 21, 2014 1:16 pm 
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Joined: Sat May 12, 2012 8:32 am
Posts: 399
Location: Adelaide, Australia
Should be possible, you might even get better shifting because the chainrings are closer spaced...

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Posted: Sat Jun 21, 2014 1:16 pm 


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PostPosted: Sat Jun 21, 2014 4:10 pm 
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Joined: Wed Oct 29, 2008 7:55 pm
Posts: 132
Location: Finland
It will work but you won't get better shifting since shifting ramps won't be aligned perfectly.

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PostPosted: Sat Jun 21, 2014 7:33 pm 
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Joined: Tue Apr 23, 2013 9:05 pm
Posts: 30
No better doesn't worry me, the question is wouldn't shifting be worse than 50/34?


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PostPosted: Sun Jun 22, 2014 12:53 am 
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Joined: Tue Jun 17, 2014 2:34 pm
Posts: 36
Since the ramps aren't aligned the same (as TurboKoo mentioned), the shifting will probably be a little worse. So, probably feels like SRAM.


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PostPosted: Sun Jun 22, 2014 3:43 am 
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Ahaha CXTony +1000

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PostPosted: Sun Jun 22, 2014 3:45 am 
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Joined: Sun Apr 22, 2012 8:23 pm
Posts: 36
CXTony, why the dig at Sram? Their Yaw front shifting is spectacular.

As for the original question, I haven't set one up but my guess is 50/36 works fine. Just out of curiosity what is stopping you from going 52/36?


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Posted: Sun Jun 22, 2014 3:45 am 


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PostPosted: Sun Jun 22, 2014 8:24 am 
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Joined: Tue Apr 23, 2013 9:05 pm
Posts: 30
I've already bought 50/34 because I got really good price on it. 50t big ring suits me well, but 34t is too small. And inner ring costs 7 times less than big ring!


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