Carbon frame BB help (urgent)

ademort

I took my carbon frame to my LBS this morning to have the BB removed. I recieved a phone call some minutes ago to tell me that they cannot get it out. When they turn the cup on one side the other side turns aswell.They suggested that the best way to get the BB out is for them to gently warm it up? I do not like the sound of that one bit. The LBS is a specialist racing cycles only shop and employ a former pro team mechanic, however he is not at the shop until Tuesday.
I have never been to this shop before and would prefer to wait till Tuesday for an expert opinion When i spoke to the man in the shop this morning he appeared to know what he was talking about Has anyone else had a similar problem.

Slow Downcp

If both cups turn it would suggest that the BB shell has come away from the frame itself? What frame is it?

ademort

I bought it from www.4us-tech.it and the model is Indianapoils if thats any help.
Ademort

ride_whenever

sounds like the shell has come away... getting it out might be problematic...

Monty Dog

We used to press-out stuck BBs with a fly-press - OK with steel and cheapo ally but not recommended for carbon! Really depends on the make of BB, how it is constructed and whether it can be pulled apart in situ - many are bonded together - hence the need for heat

ademort

As i said in my first post the only thing that i know is that when the mechanic tries to remove the BB both sides are turning. He never mentioned that the BB has come away from the frame or anything is broken. Will be in the shop on Tuesday and hope that the former pro team mechanic can help. Whatever happens will keep you informed and thanks to all for your replys its much appreciated.
Ademort

Slow Downcp

Can't they hold the other side still with another tool? Good luck Tuesday though - hope it works out.

RogerTheDodger

What is the BB threading?

What type of BB unit are we talking about?

I ask because if it is an Italian threaded BB then it is entirely possible for the BB unit, as a single unit (both cups plus whatever is in the middle) to be moving as a single unit within the bottom bracket and not the threaded sleeve having become detached.

If it is an Italian BB this would be my first thought rather than the problem being detached sleeve. Sleeving is a well understood and established process plus with modern manufacturing and bonding techniques whilst a detached sleeve not impossible it's unlikely.

Roger

ademort

RogerTheDodger wrote:

What is the BB threading?

What type of BB unit are we talking about?

I ask because if it is an Italian threaded BB then it is entirely possible for the BB unit, as a single unit (both cups plus whatever is in the middle) to be moving as a single unit within the bottom bracket and not the threaded sleeve having become detached.

If it is an Italian BB this would be my first thought rather than the problem being detached sleeve. Sleeving is a well understood and established process plus with modern manufacturing and bonding techniques whilst a detached sleeve not impossible it's unlikely.

Roger

No, unfortunately it,sCampag Mirage square taper bb with a British thread and i have to admit my fears are that there is some sort of unit within the bb shell of the frame which has come completely free from the frame and thats why both sides are turning.The only plus point at the moment is that the chief mechanic is a former Pro team mechanic and he is in the shop on Tuesday. I suppose if anyone can help then he can, will keep you informed, but thanks for your suggestion.
Ademort

ademort

Good news, the mechanic managed to get the BB out without damaging the frame. To get it out he used a hacksaw to make two cuts at 90degrees to each other in the BB cups and sawing almost all the way through to the frame, this was to relieve the pressure a little, they then came out quite easily. Apparently. The BB was never greased when it was fitted in the first place and that was the cause of the problem.For removing and fitting the old and new BB its cost me 65quid, which may sound a lot, but given the amount of work involved i am quite happy, Thanks to all for there advice and opinions as always much appreciated.
Ademort

formerlyknownasbonj

so the shell itself is fine then?

ademort

formerlyknownasbonj wrote:

so the shell itself is fine then?

Yes, the shell is fine and i fitted the new crankset today and its also fine. I used a Shimano UN54 BB with 110mm axle length and together with the crankset fit perfectly, so i am a very happy man.
Ademort