What bottom bracket do I need?

[weisan]

I have a 2014 S-Works Crux with OSBB carbon shell 46x61.

I intend to use a SRAM Red BB30 PF30 short spindle crank.

What bottom bracket do I order to make sure the two works perfectly together?

[NHAero]

Originally Posted by weisan

I have a 2014 S-Works Crux with OSBB carbon shell 46x61.

I intend to use a SRAM Red BB30 PF30 short spindle crank.

What bottom bracket do I order to make sure the two works perfectly together?

Someone here may know, but I'd look at Wheels Mfg web site and give them a call if necessary.

Is the shell really that short, 61mm?

[weisan]

Aero pal, thanks for your reply. Another forum pal also suggested giving Wheel Mfg a buzz, maybe I will do that.

Yeah, it really is 61...is one of those crazy standards that Specialized stopped producing a year later and got back on the regular program.

[NHAero]

Their press together PF30 BB says it works for shells 61-86.5mm. I picked one off eBay for half price for my Supersix, happy with it so far. My guess is you may need an extra spacer or two.

[NHAero]

I think this is what I have
eBay item # 285607651196

[StressStrain]

Hit up Wheels Mfg. They have every possible bb and crank combination covered, their parts are awesome, and they are super helpful.

TBH Wheels Mfg is like a decoder ring in this time of non-standard standards. Super helpful!

[weisan]

Thank you aero pal.

[mjf]

Wheels MFG indicates that it's essentially just a PF30, but narrower.

https://wheelsmfg.com/carbon-osbb-te...nd%2046mm%20ID

Your options are press fit, or a press fit thread together. Between the two, buy the thread together, it's worth the peace of mind.

https://wheelsmfg.com/pf30-threaded-...-bb-black.html

Later iterations of the frame did essentially use a PF30 shell bonded into the frame, and bearings were pressured directly into that shell, in effect making it a BB30.

[zzy]

Carbon OSBB = PF30 (needs a 109mm spindle)
Alu OSBB = BB30 (needs a ~103mm spindle)

[julian3141]

I rock a Wheels MFG thread together PF30 and its great. It on my gravel/commuter bike which gets kicked around quite a bit. It was easy to instal and has given me zero issues.

Originally Posted by mjf

Wheels MFG indicates that it's essentially just a PF30, but narrower.

https://wheelsmfg.com/carbon-osbb-te...nd%2046mm%20ID

Your options are press fit, or a press fit thread together. Between the two, buy the thread together, it's worth the peace of mind.

https://wheelsmfg.com/pf30-threaded-...-bb-black.html

Later iterations of the frame did essentially use a PF30 shell bonded into the frame, and bearings were pressured directly into that shell, in effect making it a BB30.

[weisan]

Thank you all!