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In most cases failures don't have just one reason. One component might be the buff strength test in itself. The test car is stressed with 800,000 lbs along the centerline on the inner raft stops. If the cafe car was on a curve there was an angle to the cars in front and behind resulting in buff loads not only along the centerline. Additionally there would have been loads at both ends perpendicular to that car, possibly changing the equation considerably. But here too we better wait for the NTSB's findigs Regards, Volker
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