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PostPosted: Tue Jun 24, 2014 12:15 pm 
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Joined: Sat Mar 10, 2012 9:41 pm
Posts: 44
hello, I've done a few searches but still cant get a definitive answer to this.

A friend is looking to upgrade from a specialized tarmac sl2 to either a Giant Propel adv sl or a scott foil team hmx fameset and new groupset.

He has a quarq riken but its BB30 that he ideally wants to reuse - are there any adapters that will allow him to get a bb30 quarq into either of these pf86 framesets?

Ive seen these http://rotorbike.com/products/road/bb86_40 by rotor but its a bit confusing.


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Posted: Tue Jun 24, 2014 12:15 pm 


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PostPosted: Tue Jun 24, 2014 12:34 pm 
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Joined: Sat Jul 29, 2006 2:36 am
Posts: 1244
Location: UK
This has come up before. The Rotor adapters will work but to accommodate the larger spindle the bearings are very small and not very durable.

I can't search at the moment but there are threads that cover this.


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PostPosted: Tue Jun 24, 2014 12:49 pm 
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Joined: Sat May 26, 2012 11:26 pm
Posts: 724
As 585 said, Riken is not a true BB30. It will fit, but bearing life will be short as the bottom bracket is designed for a 24mm spindle and the riken has a 30mm spindle, the additional 6mm has to come out of space available for the bearings.

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Evo 5.63kg SL3 6.66 viewtopic.php?f=10&t=110579" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;


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PostPosted: Wed Jun 25, 2014 5:07 am 
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Joined: Mon Jan 24, 2005 9:41 pm
Posts: 763
Location: Uppsala, Sweden
the bearing should not be that thin considering that they have made the "press-in" a part of the bearing, BUT bb86 has a wider shell on the frame then bb30, så the problem can be that the spindle will be to short


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PostPosted: Wed Jun 25, 2014 5:12 am 
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Joined: Sat May 26, 2012 11:26 pm
Posts: 724
As already stated the Riken has a longer spindle as it is not a true BB30 crank.

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Posted: Wed Jun 25, 2014 5:12 am 


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PostPosted: Wed Jun 25, 2014 12:33 pm 
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Joined: Mon Jul 26, 2004 1:06 pm
Posts: 1008
Location: Melbourne, Australia
Buy a standard GXP crankset. Swap the spiders. Sell the Riken BB30 arms with standard spider on it.

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