BB30 or BSA?

Discuss light weight issues concerning road bikes & parts.
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Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA

by eric

I'm going to get a FM066 frame to make a #2 bike using left over parts including an Sram Red GXP crank.
Should I get BB30 or BSA? BSA seems so old fashioned. It would work with this crank but in the future I might want a BB30 crank. The increased heel clearance would be nice.

OTOH BSA just works. No fuss.

If I go BB30, which adaptor? Wheels' Manufacturing has two: ... -sram.html" onclick=";return false;" onclick=";return false; and the "multiadaptor": ... ranks.html" onclick=";return false;" onclick=";return false;.

I like the all in one style that clamps into the shell like the Praxis (" onclick=";return false;" onclick=";return false;) but have not found one for GXP, only Shimano.

Many, many, many threads on this ... 66&bih=667" onclick=";return false;

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Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K

by bm0p700f

threaded BB may be old fashioned but they work so well I am relucant to make the move myself. Also you crankset is for threaded BB so it not like you need BB30 anyway. Given its a cheap chinese carbon frame have they really got the tolerances for BB30 right, maybe they have I really don't know.

I am still fan of aquare taper BB's. An old fashioned square taper crankset with a Ti BB can be as light as many modern cranksets and the bearings last a long time.

The wheels manufacuring BB30 adapters seem quite good. I have used them on customers bikes and no problems reported yet.

by Weenie

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Location: In the industry

by elviento

One key difference between BSA and BB30 or even PF30, is that threads do give you more tolerance for inperfect diameters.
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