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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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The Falcon's crack is exactly where the temp control during brazing can be hard to do, twice. I wonder if there's a slight bulge outward of the ST just below the lug's edge. I can't count how many frames I've felt that heat distortion about a finger length down the ST. Both of the frames I have made that suffered cracks did right there too. Both times I knew I cooked the ST. One cracked before the paint, one after many thousands of miles and many years. Andy
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AndrewRStewart