OSBB- not one for the home mechanic

carrock

What the hell is this all about?

Creaking on my Roubaix S works BB so downloaded the instructions for servicing.

Apparently I need a specialized bearing puller, a bearing press, thread lock, plus parts.

And the previous owner over tightened the cap screw, so needed a stud extractor to remove that.

Previous roubaix had hollotech 2 which was a ten minute job.....

Furious.....just why is the point of this stupid system.....

unixnerd

That's a blow, I've got one of those myself and thought it was normal HollowTech II (it's 2012 Ultegra 6700). What groupset is yours?

nicklouse

sounds like BB30.

carrock

yes just different names for the same thing

spesh call their version of BB30 OSBB

But still, it is press fit bearings, 2 types of locking/retaining compound, and 2 special tools to extract and replace the bearings

Rather than 2 bearing cups and a fecking spanner as with Hollowtech 2

carrock

unixnerd wrote:

That's a blow, I've got one of those myself and thought it was normal HollowTech II (it's 2012 Ultegra 6700). What groupset is yours?

Ultegra but has s works carbon cranks

sungod

fsa's 'basic' bb30 tools aren't pricey, removal tool is a fiver (use it to drift out the bearings), installation tool is eight quid, add a big nut+bolt and some washers and you're tooled up...

http://www.evanscycles.com/products/fsa ... l-ec019129
http://www.evanscycles.com/products/fsa ... l-ec019130

...does the job, comparable in price to a cheap htii tool

fwiw i don't use loctite (chunky steel bb shell), but if specialized are saying it's necessary on theirs then it suggests the shell tolerances aren't tight, which could explain the creaking, 641 or 609 (higher strength) are the ones people seem to use

but it might be worth trying grease instead, saves faffing about with retaining compound and makes subsequent servicing simpler

carrock

excellent thanks for that

might get some of that park blue grease

smidsy

At least they have the balls to admit that the system is rubbish.

Obscenly Stupid Bottom Bracket :-)

philvantwo

bikeit65

I have to service the bottom bracket on my CAAD 10 which is also BB30, I seen on this forum that some people used retaining compound, but according to Loctite the only way to remove the bearings that have been installed with compound will be to heat up where the compound will be used, not too sure how this will work with the paint on the frame, so I think I will use grease unless someone can tell me that using compound will be totally safe.