Bottom bracket options bbal86 press fit

macbane66

Have a cube gtc agree , it has a press fit bb (bbal86),

Any technical guru know if that's compatible with bb30s

3102derek

its a different size , see here => http://problemsolversbike.com/files/tech/Bottom_Bracket_Standards_Reference.pdf

macnab

macbane66 wrote: »

Have a cube gtc agree , it has a press fit bb (bbal86),

Any technical guru know if that's compatible with bb30s

No its not.

I have only seen them with 24mm bearings on both sides for Shimano Hollowtec or 24mm on the drive side and 22mm on the non drive side for Sram.
There may be other options but BB30 is not one of them.

rappid

yes, you can use bb30 crankset with your pressfit frame.
there is special adaptor bearing kit pressfit -> bb30.

macnab

rappid wrote: »

yes, you can use bb30 crankset with your pressfit frame.
there is special adaptor bearing kit pressfit -> bb30.

Are you sure about that? The BB30 bearing housing is about 20mm narrower than BB86, so I presume the crank spindle is 20mm shorter also, I can't see how that would work. I could be wrong here BTW.

rappid

I will swap my current sram red crankset for cannondale hollowgram crankset.
My frame is scott addict sl with shimano pressfit bb.
Cannondale spindle comes with different sizes: 104, 109, 122, 128, 131mm which is great!

macbane66

Thanks folks

macbane66

macnab wrote: »

No its not.

I have only seen them with 24mm bearings on both sides for Shimano Hollowtec or 24mm on the drive side and 22mm on the non drive side for Sram.
There may be other options but BB30 is not one of them.

Ok So does anyone see any issues with a FSA SL-K Light Mega crank being compactible with a BB86 set up. I checked FSA website and it seems to be a runner, they are also 24mm spindles. Obviously I would need to get BB86 carbon cups, thanks men

CheGuedara

That combo will work fine with the FSA adapter. During the year I fitted a k-force chainset (same spindle dia/length as SL-K) to a clubmates Canyon which has a bb86 bottom bracket with zero problems. Just make sure to clean the bottom bracket area and apply some Loctite 641 before pressing the bearings in to ensure a creak free install.

macbane66

CheGuedara wrote: »

That combo will work fine with the FSA adapter. During the year I fitted a k-force chainset (same spindle dia/length as SL-K) to a clubmates Canyon which has a bb86 bottom bracket with zero problems. Just make sure to clean the bottom bracket area and apply some Loctite 641 before pressing the bearings in to ensure a creak free install.

Hi Che
Fsa adapter u reference?
Do u mean bringing it to a bb30 or what?
Thanks again

CheGuedara

To run a 24mm diameter spindle crank such as the SL-K or K-force on a BB86 bottom bracket standard frame you will require one of either FSA's ceramic or standard BB86 bottom bracket cups (which house the bearings). Wiggle have the ceramic one HERE. The price isn't too bad either.

This will not enable the use of a BB30 chainset with your frame; I'm not sure anything will enable that option as the BB30 spindle will be too short to allow fitting to wider BB standard frames.

It will absolutely allow you to run the SL-K cranks on your frame though. Again, to make the best shape of the job ensure the BB area is *clean* (I mean take some alcohol wipes to it to get rid of any kind of greases etc), use the Loctite and leave 24h before riding to ensure nothing will budge. After that it should be plain sailing.