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PostPosted: Sun Mar 18, 2012 3:54 am 
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Joined: Wed Oct 13, 2010 7:20 pm
Posts: 67
Location: Ireland
Fitted an Ultegra 6700 rear mech on my mtb today.Running a 9 spd 32-11 cassette and all seems well on a quick spin around my local road.Only fitted it as it was lighter than an XT rear mech,and cheaper than a XTR one.Will I have any issue's once I go off road?? Any other weight weenie mtbers use road parts on their mtbs??


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PostPosted: Sun Mar 18, 2012 8:46 am 
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Joined: Sun Jun 12, 2005 10:56 am
Posts: 2650
Location: New Zealand
a DA 7800 mech running a 27-12 was semi-common for plantation racing near here. No dramas. They can be tuned light and strong too! It won't be flash if you need really big cogs (I was surprised you managed to get it running well on a 32....the old DA would not have done that)

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Posted: Sun Mar 18, 2012 8:46 am 


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PostPosted: Mon Mar 19, 2012 12:39 am 
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Joined: Fri May 21, 2010 3:08 am
Posts: 317
Location: Milton, Canada
I have an Ultegra 6700 on my 1x6, and it has been amazing! I think the combo of the short cage (in my case), smaller cassette stack and stiff springs allowed me to also get away without using a seat tube mounted chain keeper. Done lots of miles on rough terrain and have yet to experience an issue with this setup.

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PostPosted: Mon Mar 19, 2012 8:00 pm 
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Joined: Tue Mar 13, 2012 8:37 am
Posts: 57
A Lightweight RD can be used with a 11/32 cassette.


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PostPosted: Wed Mar 21, 2012 9:10 am 
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Joined: Wed Jan 18, 2012 4:23 pm
Posts: 475
Location: Midlands, United Kingdom
Ultegra 6700 is sized for a largest cassette sprocket of 28T
http://cycle.shimano-eu.com/media/techd ... 702204.PDF
I doubt it will like the 32T over much, I know the 105 on my daughters we tried (may as well) to go to a 32T and it wouldn't have it.

Simon

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PostPosted: Wed Mar 21, 2012 9:38 pm 
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Joined: Sat Apr 26, 2008 10:44 pm
Posts: 112
Location: Holland/Belgium
SRAM RED can be used with 11 - 32 cassette's. Like on Robin van Berkels WW Scalpel BBQ.
He modified the RED to be used with grip shifters by adding a small pin to extend the cable pull/gear.


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PostPosted: Thu Mar 22, 2012 8:16 am 
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Joined: Tue Oct 04, 2011 5:04 pm
Posts: 155
Do you have any pics of that? It sounds like an interesting setup.

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PostPosted: Thu Mar 22, 2012 12:48 pm 
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Joined: Sat Apr 26, 2008 10:44 pm
Posts: 112
Location: Holland/Belgium
Only found a picture of the cable tune to ajjust for grip shifters in my show your stuff topic on a dutch mtb site.

Edit: Found a pic!
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PostPosted: Thu Mar 22, 2012 3:41 pm 
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Joined: Mon Jul 26, 2010 10:36 am
Posts: 63
And he uses it with a 11-32 cassette? Without modifications of the jockey wheels?


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PostPosted: Thu Mar 22, 2012 4:59 pm 
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Joined: Sat Apr 26, 2008 10:44 pm
Posts: 112
Location: Holland/Belgium
He uses standard Extralite jockeys as seen on the pics.
Yep he runs 11 - 32. Told me that with mod's even a 34t cassette would be possible.
His RED weights 123 grams.


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PostPosted: Thu Mar 22, 2012 11:22 pm 
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Joined: Fri Aug 11, 2006 2:30 am
Posts: 258
That looks like a nice bike. Clavicula's ...

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PostPosted: Fri Mar 23, 2012 9:31 am 
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Joined: Tue Oct 04, 2011 5:04 pm
Posts: 155
OK, i'm going to have to use the P-word. That thing is PORN!

My next rear-mech on the Commençal is going to be SRAM Force of RED for sure.

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PostPosted: Sat Mar 24, 2012 6:27 pm 
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Joined: Wed Apr 16, 2008 7:43 am
Posts: 201
Location: Sapporo City, Hokkaido, Japan
11-34 is possible with 42-29 using a RD 7900 with Extralite pulleys.


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PostPosted: Sun Mar 25, 2012 8:21 am 
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Joined: Thu Jul 16, 2009 9:33 pm
Posts: 107
I think its a C'dale Scalpel


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PostPosted: Sun Mar 25, 2012 2:59 pm 
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Joined: Wed Feb 02, 2011 3:48 am
Posts: 1064
I guess something for people to take into account, is simply that one combo of cassette and RD that works fine on one bike, may not work on another all that well simply because of the differences in hanger length/position.


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Posted: Sun Mar 25, 2012 2:59 pm 


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