Eurobike/elsewhere - any hints re:oversized BB's in future
Posted: Sun Sep 19, 2004 3:17 pm
Just wondering if anyone has picked up at Eurobike or elsewhere any hints about the potentail coming of oversized bottom bracket assemblies......which would create a new standard for frames (ala recently Pinarello and several years back the original ISIS designers http://www.bicycleretailer.com/bicycler ... id=1723692 )
I'm noticing some new carbon frames such as the Scott, Cervelo, and a few others with oversized BB shells - which right now are noted as being usefull for providng larger bonding surfaces.......but also maybe a tip off that they may already be preparing for oversized BB's as a standard (they'd only have to change the alu inserts for larger theaded cups or pressed bearings).
If this change occurs in the not so distant future I would imagine it would be the turning point that would open up Campagnolo to go away from square taper cranks/BB's too?! .....although, I was able to read bits of the recent French Velo test of BB/Cranks where the Campy Record square taper / carbon crank combo was pretty decent in results of total stiffness and stiffeness vs weight.
Shimano reps even said when their new pipe BB w/external bearings came out in 2003 that this is all they can do for BB's until the standard for frame configurations change - what I read into that is look for a change in frame design (at the BB shell) to allow for the next generation of BB's.
I'm noticing some new carbon frames such as the Scott, Cervelo, and a few others with oversized BB shells - which right now are noted as being usefull for providng larger bonding surfaces.......but also maybe a tip off that they may already be preparing for oversized BB's as a standard (they'd only have to change the alu inserts for larger theaded cups or pressed bearings).
If this change occurs in the not so distant future I would imagine it would be the turning point that would open up Campagnolo to go away from square taper cranks/BB's too?! .....although, I was able to read bits of the recent French Velo test of BB/Cranks where the Campy Record square taper / carbon crank combo was pretty decent in results of total stiffness and stiffeness vs weight.
Shimano reps even said when their new pipe BB w/external bearings came out in 2003 that this is all they can do for BB's until the standard for frame configurations change - what I read into that is look for a change in frame design (at the BB shell) to allow for the next generation of BB's.
