Probably the former owner didn't adequately grease the bb shell and cup threads upon installation and they are now corroded together. But it also helps to use the proper tool for the job, not something with less grip like the Park model and its ilk.
Grasp a Campagnolo #793/A fixed cup remover in a large, solidly mounted bench vise and use the frame as the lever arm. Works every time, guaranteed. Won't affect the paint around the bb shell (nor your knuckles), as happens when some other types of home mechanic tools slip under the extreme pressure needed in these sorts of situations. Their primary appeal is based on low cost to the consumer, not mechanical effectiveness. The Campaganolo tool is designed to do the job *right*, expense be damned. Maybe a professional shop near you has this tool and can perform the task.
Bill Bryant Santa Cruz, CA
on 3/9/03 9:58 AM, Eric Elman at firstname.lastname@example.org wrote:
> I'm feeling kind'a dumb right now. I've stripped two of my bikes down in
> preparation of rebuilds. Both have Campagnolo SR BB's. On both bikes I
> can't get the fixed cup to loosen. I'm using a Park fixed cup removal tool,
> both bikes are English thread. Never had a problem before with any other
> bikes. Any tricks or ideas on how to get them loose without ruining the
> cups (functionality and cosmetics) or ruining my knuckles?
> Thanks in advance for your help,
> Eric Elman
> Somers, CT where it's finally been in the 40's for two days in a row.