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PostPosted: Wed Jan 29, 2014 8:50 am 
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Joined: Thu Sep 05, 2013 7:33 am
Posts: 84
Location: Hungary/Budapest
Hey there!

As the title says, i was wondering about the stiffness of a front carbon derailleur clamp (in size 34.9mm)... I read that they tend to be flexy under load, which can make the front shifting to the big ring kinda hard... I have a carbon frame, and i'd like to protect it by using a carbon derailleur clamp. I did a search on the forum for this question, but could not really find any satisfactory answer, maybe there's none, but let's see!

So, anyone using this type of carbon clamp in 34.9mm, please, shed some light on this!

Thanks!


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PostPosted: Wed Jan 29, 2014 9:37 am 
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Joined: Fri Apr 20, 2012 9:04 pm
Posts: 333
One of my friends used one ( was a parlee clamp on a caad) and it snapped.

Having looked myself for my latest build, I didn't bother. From my research, the simple carbon bands (eg mcfk) have very tight tolerances and you should order the one that is
perfect for your actual frame (ie a band sold as 34.9 will not necessarily fit perfectly at the correct torque). There are now adjustable carbon ones, but I thought they were fugly!


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Posted: Wed Jan 29, 2014 9:37 am 


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PostPosted: Wed Jan 29, 2014 1:34 pm 
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Joined: Sat Jun 19, 2004 11:08 am
Posts: 6852
Location: Urbana, Illinois
I've been using the Parlee clamp for over two years with a Record front braze on derailleur. Shifts perfect and no issues. I'm also using an alloy bolt to hold everything together. I can see someone having a stiffness issue using the old Sram Red titanium caged derailleur but then the issue would be the derailleur not the clamp.

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RESIDENT GRUMPY OLD MAN.


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PostPosted: Wed Jan 29, 2014 1:59 pm 
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Joined: Mon Mar 28, 2011 6:46 pm
Posts: 333
Location: Amsterdam
I'm using a mcfk clamp for 3 or 4 years now.

Not problems at all, there is more flex in the derailleur (Force) than in the clamp!


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PostPosted: Wed Jan 29, 2014 2:53 pm 
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Joined: Mon Apr 11, 2011 6:28 pm
Posts: 225
Location: Palm Coast, Fl.
I bought a parlee clamp on this board 34.9 for my SystemSix and the shifting is no affected at all.


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PostPosted: Wed Jan 29, 2014 2:56 pm 
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Joined: Thu Sep 05, 2013 7:33 am
Posts: 84
Location: Hungary/Budapest
Thank you guys for all the help! I've ordered a carbon clamp and will see how it works! Thanks!


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PostPosted: Wed Jan 29, 2014 3:52 pm 
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Joined: Tue Sep 22, 2009 1:29 pm
Posts: 878
Location: UK
I have a Parlee one on my Parlee (surprising I know) I don't notice any flex whatsoever

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"We live in an age when unnecessary things are our only necessities." Oscar Wilde

Pegoretti Responsorium, Parlee Z5i, Donhou Commuter, 1946 MacLeans Featherweight L'Eroica!, 2 'dales SM1000 and Habit SE


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PostPosted: Wed Jan 29, 2014 4:13 pm 
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Joined: Sat Mar 06, 2010 10:34 pm
Posts: 387
I have been using the omni racer carbon clamp for about a year with no issues. Installed on a caad9 with a sram red fd. Seems to shift fine. I'm in the big ring most of the time. No hills in Florida. I see no visible flex when it's on the stand. Check them out on eBay.


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PostPosted: Wed Jan 29, 2014 4:44 pm 
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Shop Owner

Joined: Sun Jan 03, 2010 4:58 am
Posts: 760
I too use a Parlee version. Originally with a SR11 and now with a SR EPS [with the derailleur stiffening piece] and I never thought I had a problem. I always wondered if I would before I bought it.


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PostPosted: Wed Jan 29, 2014 6:51 pm 
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Joined: Sun Mar 27, 2011 8:16 pm
Posts: 443
I killed one of the eXotic ones really fast with Di2.


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PostPosted: Thu Jan 30, 2014 4:50 am 
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Joined: Mon Feb 16, 2009 8:29 am
Posts: 99
I am using that from Parlee and x cross (copy cat from PRC?) with 7900 and 9000, both fine without any problems


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PostPosted: Thu Jan 30, 2014 11:49 am 
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Joined: Thu Sep 05, 2013 7:33 am
Posts: 84
Location: Hungary/Budapest
Just got the clamp on the mail. Looks better than in the photo... You just simple open it up, and slide it onto the tube?


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PostPosted: Thu Jan 30, 2014 1:46 pm 
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Joined: Sat Jun 19, 2004 11:08 am
Posts: 6852
Location: Urbana, Illinois
Yes, that is correct.

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RESIDENT GRUMPY OLD MAN.


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PostPosted: Thu Jan 30, 2014 2:52 pm 
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Joined: Thu Sep 05, 2013 7:33 am
Posts: 84
Location: Hungary/Budapest
Okay, thanks. Will see how it fits, and works, and let you guys know...


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Posted: Thu Jan 30, 2014 2:52 pm 


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PostPosted: Thu Jan 30, 2014 3:25 pm 
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Shop Owner

Joined: Sun Jan 03, 2010 4:58 am
Posts: 760
FYI, With my Parlee, they also gave me a piece of plastic clear tape to 'shim' the clamp due to the minute size differences of the tube. I still had issues with the clamp slipping. Cloth tape worked much better and it had never slipped since then.


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