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Re: BB30 -> BSA Converter

Posted: Sun Sep 11, 2011 12:26 am
by yongkun
Can i use the FSA adapter?

Also for the for the wheels mfg: http://www.wiggle.co.uk/wheels-manufact ... dle-shims/
Can the Rotor 3D fits it, given it has no problem with the DA7900 BB.

Re: BB30 -> BSA Converter

Posted: Sun Sep 11, 2011 2:06 am
by thisisatest
yes, the rotor 3d will fit, as will any 24mm spindle crank, except for sram cranks (they get their own version of the same type of part) or FSA **-light model carbon cranks (will fit with modification)

Re: BB30 -> BSA Converter

Posted: Sat Sep 17, 2011 10:31 am
by yongkun
one more question, i am planning on buying the FSA BB30 Adapter.
But it seems like once i have it installed in, i need a tool to removed it out; as below
http://www.chainreactioncycles.com/Mode ... elID=36374

Do i need to buy it? i got a new bb30 cranks coming in two months time which will replaced the current english threaded one.

Re: BB30 -> BSA Converter

Posted: Sat Sep 17, 2011 3:31 pm
by StuTheWeak
Need to hijack this thread...

Is Specialized OSBB the same as BB30? Somewhere I read that OSBB is wider than BB30. That mean it won't work with a common BB30 crankset?

Re: BB30 -> BSA Converter

Posted: Sat Sep 17, 2011 4:25 pm
by Joshvalman
I've read it's not advised to remove the FSA thread adapter and reuse the frame with bb30 bearings as it stretches/deforms the tube especially if it's an ali insert in a carbon frame. If you're looking to use bb30 in the future I advise either a Raceface bb30 adapter like I use, or the plastic adapters thisisatest posted.

Re: BB30 -> BSA Converter

Posted: Sat Sep 17, 2011 4:55 pm
by bikerjulio
StuTheWeak wrote:Need to hijack this thread...

Is Specialized OSBB the same as BB30? Somewhere I read that OSBB is wider than BB30. That mean it won't work with a common BB30 crankset?


Spec OSBB is PF 30. Width is the same. Housing diameter is 4mm greater. It is still a BB 30 system, using BB 30 cranksets.

Re: BB30 -> BSA Converter

Posted: Sat Sep 17, 2011 5:38 pm
by StuTheWeak
While I certainly don't want to fork out the money to buy a new BB30 crankset...it seems like an anti-weightweenie tactic to add the weight of an adapter in addition to the heavier crankset design (gxp).

With that said I've been eye balling an S-Works SL3 with bb30...part of me just wants to buy a new crankset to match the frame and extra weight savings. Descisions, descisions...

Re: BB30 -> BSA Converter

Posted: Sat Sep 17, 2011 5:40 pm
by StuTheWeak
bikerjulio wrote:
StuTheWeak wrote:Need to hijack this thread...

Is Specialized OSBB the same as BB30? Somewhere I read that OSBB is wider than BB30. That mean it won't work with a common BB30 crankset?


Spec OSBB is PF 30. Width is the same. Housing diameter is 4mm greater. It is still a BB 30 system, using BB 30 cranksets.


So, will standard BB30 bearings and a standard SRAM Red BB30 crankset work in a OSBB setup? That's the question that begs to be answered by those in the know...please speak up :)

Re: BB30 -> BSA Converter

Posted: Sat Sep 17, 2011 8:38 pm
by Rocco
I'm using FSA converter on my Cinelli PRO best off. No one claim for that.

Re: BB30 -> BSA Converter

Posted: Sun Sep 18, 2011 4:21 am
by thisisatest
the Specialized OSBB just means that it takes a 30mm spindle. there have been a few variations on that. There are some road ones that take bearings straight in, those are true bb30. the mountain ones until 2011 were not, they were wider. the new systems have a 46mm OD, like PF30, but are NOT PF30. THe frames take a plastic sleeve that holds the bearings, but the lip on the sleeve that sticks out past the frame is a lot thicker. The frame width is also NOT 68mm. it is much narrower...
it is...
wait for it...
61mm. as in sixty-one. very narrow. that the specialized frames can still put up good bb stiffness numbers is amazing. makes me think bbright mightve been a waste of time for cervelo?
the frame measures 68mm with the plastic sleeves pressed in, so with that, the frame is essentially bb30. just dont try to use a pf30 bottom bracket, use the plastic sleeves that the frame comes with and install/remove bearings in that. the bearings come out of those sleeves much easier than the pf30 variety anyways.
the current mountain OSBB with the plastic sleeves essentially adds up to 73mm bb30, btw, but again only when you already count the sleeves.
why specialized did this, i dont know, my guess is that they developed their own thing similar to pf30 at the same time sram was doing their thing, and didnt know what the other was doing...

Re: BB30 -> BSA Converter

Posted: Sun Sep 18, 2011 5:56 am
by micropox
thisisatest wrote:the Specialized OSBB just means that it takes a 30mm spindle. there have been a few variations on that. There are some road ones that take bearings straight in, those are true bb30. the mountain ones until 2011 were not, they were wider. the new systems have a 46mm OD, like PF30, but are NOT PF30. THe frames take a plastic sleeve that holds the bearings, but the lip on the sleeve that sticks out past the frame is a lot thicker. The frame width is also NOT 68mm. it is much narrower...
it is...
wait for it...
61mm. as in sixty-one. very narrow. that the specialized frames can still put up good bb stiffness numbers is amazing. makes me think bbright mightve been a waste of time for cervelo?
the frame measures 68mm with the plastic sleeves pressed in, so with that, the frame is essentially bb30. just dont try to use a pf30 bottom bracket, use the plastic sleeves that the frame comes with and install/remove bearings in that. the bearings come out of those sleeves much easier than the pf30 variety anyways.
the current mountain OSBB with the plastic sleeves essentially adds up to 73mm bb30, btw, but again only when you already count the sleeves.
why specialized did this, i dont know, my guess is that they developed their own thing similar to pf30 at the same time sram was doing their thing, and didnt know what the other was doing...


that was very informative thisisatest. Would like to ask you one more thing about the OSBB of specialized frames. I've been wanting to get a venge frameset (unfortunately only available in OSBB). But also like to keep my campy ultra-torque cranks. Will i be able to use the ultra-torque OS-fit 68x42 (instead of the 68 x 46) BB cups together with the plastic sleeve on my campy cranks? I know campy is also releasing the 68x46 version. But i would prefer the one with the plastic sleeves to minimize creaking in the BB.

Re: BB30 -> BSA Converter

Posted: Mon Sep 19, 2011 1:59 am
by thisisatest
micropox,
sorry, you cannot use campy cranks on the venge, with or without the plastic sleeves. and campy's 68/46 cups (already out) will not help either, as the frame is too narrow for those.
the plastic sleeves are designed to take up tolerance, but not designed for the loads an external cup would place if pressed into them. the cups would pry themselves out.
this OSBB sheet tells all. the venge uses the "carbon osbb" dimensions, like the sworks roubaix and tarmac for 2011.

http://service.specialized.com/collater ... racket.pdf

Re: BB30 -> BSA Converter

Posted: Tue Sep 20, 2011 2:18 am
by micropox
thisisatest wrote:micropox,
sorry, you cannot use campy cranks on the venge, with or without the plastic sleeves. and campy's 68/46 cups (already out) will not help either, as the frame is too narrow for those.
the plastic sleeves are designed to take up tolerance, but not designed for the loads an external cup would place if pressed into them. the cups would pry themselves out.
this OSBB sheet tells all. the venge uses the "carbon osbb" dimensions, like the sworks roubaix and tarmac for 2011.

http://service.specialized.com/collater ... racket.pdf


thanks so much for this info. was about to order those campy cups. Good thing i did not. Guess i have no choice but to use specialized cranks on my campy drivetrain.

BB30 adapter for 24mm Quarq/SRM?

Posted: Wed May 02, 2012 1:35 am
by DaveV
I recently got a new Cannondale SuperSix frameset and was hoping to be able to get my standard/BSA Quarq (SRAM S975) to fit using the Wheels Mfg adapters, but on first attempt the adapters are too wide to allow the Quarq crankset to be mounted without binding. I've seen other references to this problem on the forums but no solutions so far. Has anyone come up with a way to make this work?

Re: BB30 adapter for 24mm Quarq/SRM?

Posted: Wed May 02, 2012 3:31 am
by petal666
http://www.fullspeedahead.com/products/ ... apter-68mm

is what I plan on using on my Supersix.