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PostPosted: Sun Apr 07, 2013 4:56 pm 
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Joined: Wed Mar 08, 2006 7:50 pm
Posts: 456
Location: Bolton
Hi folks, can anyone tell me which THM b/b I need to fit my Clavs to a 2012 Madone 6.9SSL?

I've tried searching :(

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PostPosted: Sun Apr 07, 2013 5:23 pm 
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Joined: Sun Nov 21, 2004 2:45 pm
Posts: 2770
Location: London, UK
Have you emailed THM? Trek's BB is closest to Shimano's Pressfit but without the retaining cups.


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Posted: Sun Apr 07, 2013 5:23 pm 


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PostPosted: Sun Apr 07, 2013 7:07 pm 
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Location: Bolton
Yes, they replied asking for the width of the b/b on the Madone, which is 90mm, I'm still waiting for a reply.

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PostPosted: Mon Apr 08, 2013 2:06 am 
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Location: NoVA/DC
There is no way to fit a 30mm spindle crank onto a bb90 bike. Your bike has bearing seats that are 37mm in diameter. that only leaves 7mm total, or 3.5mm per side.


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PostPosted: Mon Apr 08, 2013 9:16 am 
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Location: Bolton
:shock: 175mm THM Clavicula's appearing in the for sale section soon.

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PostPosted: Wed Apr 10, 2013 12:54 pm 
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Joined: Mon Sep 07, 2009 3:10 am
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I would keep the cranks and sell the frame.


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PostPosted: Wed Apr 10, 2013 1:23 pm 
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Joined: Mon Jun 06, 2011 7:16 pm
Posts: 515
Location: Irvine, CA
sedluk wrote:
I would keep the cranks and sell the frame.


+1 !!!!!


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PostPosted: Wed Apr 10, 2013 2:43 pm 
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Location: Tucson, Az.
Not an ideal solution but it is possible to fit a Thm to bb90. You can fit a pair of 6706 bearings into each side (4 bearings total). This gives an 8mm width at the bearing seat which is made for 7 and also gives 2mm less of interface with the arm/bb but it does work. I normally don't recommend this as the 6706 bearing is very small and wears out fairly quickly. For an exact fit you could replace one of the bearings on each side with a custom 3mm wide spacer, keeping all the original dimensions, but again decreasing the longevity of the bearings.

Personally I'd agree with Sedluk and sell the frame not the crank.

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Posted: Wed Apr 10, 2013 2:43 pm 


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