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PostPosted: Mon Sep 04, 2017 6:29 pm 
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Joined: Sun Jul 08, 2012 1:16 pm
Posts: 34
According to GCN and Shimano it's NOT backwards comparable with 6800.

Big mistake in my eyes. After the debarkle with the 6800 cranks snapping, I (along with many others) would like to upgrade.

Anyone tried it to prove Shim wrong???


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PostPosted: Mon Sep 04, 2017 7:37 pm 
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Joined: Thu Aug 18, 2016 12:19 am
Posts: 61
Has to do with the crankset chain ring spacing is different. About 0.4 less, so you'll need to use the new Front Derailleur.


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Posted: Mon Sep 04, 2017 7:37 pm 


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PostPosted: Mon Sep 04, 2017 8:12 pm 
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Joined: Wed Jun 21, 2017 1:37 pm
Posts: 98
moyboy wrote:
Has to do with the crankset chain ring spacing is different. About 0.4 less, so you'll need to use the new Front Derailleur.


Yea I saw that and can't remember the benefit. Was it that it allows for less cross chaining or something?


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PostPosted: Mon Sep 04, 2017 8:14 pm 
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Joined: Fri Jan 29, 2016 12:54 pm
Posts: 63
It's supposed to allow shorter chainstays.

In practice it'll probably not actually be incompatible for most people. 0.4mm isn't very much.


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PostPosted: Mon Sep 04, 2017 8:23 pm 
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Yo do realize there are plenty of topics on this already and that there are plenty of users doing the mix and match without issue. 0.4 is less than half a turn on a limit screw.

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PostPosted: Mon Sep 04, 2017 9:27 pm 
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Joined: Thu Mar 08, 2012 11:43 pm
Posts: 3329
Ginsterdrz wrote:
According to GCN and Shimano it's NOT backwards comparable with 6800.

Since this was already covered with 9100 vs 9000 (and 8000 is just slightly heavier 9100) why would you expect it to be any different?


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PostPosted: Mon Sep 04, 2017 11:07 pm 
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Joined: Wed Mar 15, 2017 5:30 pm
Posts: 306
Does anyone know if this is in the cranks or the rings themselves? I am likely going to be getting a Power2Max 110 asymmetric to run Shimano rings and wondering if 9100/8000 rings would shift worse with a 9070 FD.


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PostPosted: Tue Sep 05, 2017 10:22 am 
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Joined: Fri Jan 29, 2016 12:54 pm
Posts: 63
It's 400┬Ám. Quit worrying and ride your bike.


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Posted: Tue Sep 05, 2017 10:22 am 


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