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Does Specialized still build with 62mm OSBB shells?

Posted: Tue Oct 10, 2017 4:55 pm
by jever98
OSBB on carbon frames was always 62mm wide, some of the narrowest out there. I was wondering if Specialized still builds their new frames like this?

Thanks

Re: Does Specialized still build with 62mm OSBB shells?

Posted: Tue Oct 10, 2017 5:08 pm
by dvq
I've got a 2018 Venge Vias Disc frameset with "OSBB" waiting to get built up -- I was surprised to find out it's just straight up PF30 68mm wide.

Re: Does Specialized still build with 62mm OSBB shells?

Posted: Tue Oct 10, 2017 5:20 pm
by jever98
Thanks - did you measure the shell? Because the crank interface, if I'm not mistaken, was PF30 with the OSBB shell.

Edit: looks like Specialized has indeed changed back to 68mm, according to some blogs out there.

Re: Does Specialized still build with 62mm OSBB shells?

Posted: Tue Oct 10, 2017 5:44 pm
by Daniel1975
Well done. OSBB was useless bullshit. I'm hoping everybody goes to the new threaded BB.

Re: Does Specialized still build with 62mm OSBB shells?

Posted: Tue Oct 10, 2017 7:54 pm
by dvq
jever98 wrote:Thanks - did you measure the shell? Because the crank interface, if I'm not mistaken, was PF30 with the OSBB shell.

Edit: looks like Specialized has indeed changed back to 68mm, according to some blogs out there.


Yes, measured shell. Even double checked because I was sort of surprised.

Do you have a source for those blogs that stated this? I can't find anything.

Re: Does Specialized still build with 62mm OSBB shells?

Posted: Tue Oct 10, 2017 8:04 pm
by Digger90
Daniel1975 wrote:Well done. OSBB was useless bullshit. I'm hoping everybody goes to the new threaded BB.



Touché. Threaded BB's will come back! :D

Cannondale deserve to be crucified for inflicting useless, POS, only-of-benefit-to-accountants, creaky, press-fit crap on the world.

Re: Does Specialized still build with 62mm OSBB shells?

Posted: Wed Oct 11, 2017 3:43 am
by dvq
Update to my earlier response, took some closer measurements.

https://imgur.com/a/hNN2P

Measured at the cups ~ 68mm
Measured at the shell ~ 66mm
Measured at the outer races of the bearings ~62mm

Not sure if this means I need spacers or anything for a regular bb30 crank.

Re: Does Specialized still build with 62mm OSBB shells?

Posted: Wed Oct 11, 2017 7:06 am
by jever98
That's very odd - looks like they retained their narrow bearing stance on a wider shell? As far as I know 68mm is the normal bearing stance.

Best