Cut it in half down the centerline and slip both cups off
Indeed, option A This was the only way to do it. I once put a standard shimano BB in a Ti frame but forgot tp lube it. Well i didnt forget, put it off as it was only going in to check a crank set up. Dear God it was a nightmare to remove
and that was in a day and was clean. This could have been in there for 10 years
File flats on the 2 pieces of shell, clamp em in a vise, and then use the correct bb tool to get the cups out
Before you ask, i have already had a go using a big spanner and the proper Royce removal tool. Any more leverage on it will damage the tool pins.
Well as above i went for option A. which was to grind a flat to thin the metal then a dermel and 2mm grinding wheel to make the cut
You can see at the ends the threads of the ...er
..thread, when i ground over that area i used minimum pressure till the merest hind of discolouration started to show through. To go deeper at this stage would mark the threads which is undesirable.
I carefully cut right through the middle section then used a hammer and screwdriver the lever the middle till the ends cracked. This is what i was hoping was going to happen as i couldnt cut the slot right across the threads i had to hope just the stress on the thinned metal from levering the screwdriver would snap it.
Im off to the mechanics to give it another go with the bb tool. No guarantees but the pressure is off to some degree. Clamped such that the torque on it will help spread the cut i might be lucky that it suddenly frees. It is at least another area we can spray a release agent into.
If it doesnt release ill do the same to the other side, pretty sure that would be it
Looks very rough but thats really down to the levering and hammering. Im well chuffed as to how this is going.
1976 Raleigh Chipper,1991 Muddy Fox Adventurer, 1992 Raleigh Diablo ,1992 Rudy Project, 1995 Cannondale M200 ,1997 Santa Cruz Tazmon ,1997 Specialized Stumpjumper ,1997 Specialized Rockhopper ,1997 Marin Quake 9.0,1998 Marin Pallisade trail ,1998 Raleigh Torus,1999 Orange Clockwork , 2005 Kona Hahanna , 2010 Orange Pure7
The Marvellous Mechanical Hope Collection