FZ1inTX
Adminstrator
My wife always says I have a mouth like a truck driver ( no offense to truck drivers ) lol.
I don't think anything is wrong with the design of the frame. Probably just bad welds. Someone may have put the wrong numbers into the robotic welder. I'm sure he was compelled to commit ritual suicide after the mistake was found .
I believe that one of the FZ1OA members who worked through a frame replacement was told by Yamaha that some frames did not have a "triple-pass" done at assembly. Given the gusset and the visible junction, I'd guess that one weld on the inside is missing/incorrect, thus too much stress occurs on the exterior weld.
Mine is a 2009 and I still check it all the time. I check my wife's 2007 much more often as I worry more about hers than mine.