Joined: Feb 2012
Posts: 19,353
Likes: 5,471
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
When you tried to remove the BB cup with the 16mm flats did you first loosen the lock ring? The lock ring acts as a lock nut clamping the cup is a specific amount of insertion (this is the long way around the bush to say "bearing adjustment"). There are bike specific lock ring tools like the Park HCW-5 but a well handled flat blade screwdriver and a hammer also works. Do you have an instructional manual to follow? Andy
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AndrewRStewart