THM BB30 BB

Discuss light weight issues concerning road bikes & parts.
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Firetrail
Posts: 58
Joined: Thu Nov 16, 2006 6:53 am

by Firetrail

Hi,

I have a BB30 frame with Specialized BB30 crankset. As i do not want to press in BB30 bearings so as to fit the crank, i came upon this product:

http://fairwheelbikes.com/thm-bottom-br ... -5189.html" onclick="window.open(this.href);return false;

The THM BB30 bottom bracket seems to fit BB30 frame via screwed-in external bearing cups. Will doing so allows the Specialized BB30 crankset be installed?

Anyone knows? Thanks!
**Ti RB | CF TT **

by Weenie


eric
Posts: 2196
Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA
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by eric

That BB is too wide for a BB30 crank.

nismosr
Posts: 1018
Joined: Mon May 05, 2008 5:15 pm

by nismosr

eric wrote:That BB is too wide for a BB30 crank.



I think the THM BB30 BB will only work for THM Crankset.

MagnusH
Posts: 63
Joined: Tue Oct 23, 2012 5:02 pm

by MagnusH

Firetrail wrote:Hi,

I have a BB30 frame with Specialized BB30 crankset.

Is it a true bb30 frame? I'm only asking because if it is a Specialized frame, then it probably has a Spceialized OSBB, which use a 46mm ID instead of 42mm ID.

eric
Posts: 2196
Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA
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by eric

There's some cranks with 30mm spindles that are longer than BB30. Lightning and Rotor are a couple I know of. The BB looks like it'd work with Lightning, assuming those are 6803 bearings.

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