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Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,056
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
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I highly doubt a bonding solution will work on the Al BB sleeve/insert (or what looks to be an insert, if the frame/shell were all one piece the crack would likely be visible from the outside). The insert has very little surface area on the crack's faces. Then there's the challenge of cleaning the crack's faces so any bonding agent will adhere to the insert and not the grime/corrosion that's likely there now.
I completely agree with first seeking a warranty or brand supplied fix. Only if after this "fails" would I consider going to a carbon repair expert. But much of this depends on what type of long term happiness you want with this bike. Andy
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AndrewRStewart