Joined: Feb 2012
Posts: 19,381
Likes: 5,527
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
One way this can happen is if the cables are pulled/bent beyond the ability of the end caps to remain structurally intact. A large and forceful swing of the bars or a significant pressure against the casing close to it's end (cap) can both cause this. Andy.