[Dave Bilyk]

I read this with interest, I have a DAX that has the seat runners mounted directly to the Aluminium floor skin. The thickness is I think 1/8" and fully riveted to the chassis around the edges. For some time now, this very question has been at the back of my mind, and my personal worry is that the practice could be marginal in terms of strength and fatigue. I don't know whether there have been any instances of failure in this area but when the alarm bells start ringing .....
I think that this a general issue, not manufacterer specific, but just because the method is existing doesn't mean that it is satisfactory. When alarm bells begin ringing in professional engineers minds, I believe that the only satisfactory courses of action are to attempt to show by calculation / analysis that the method is in fact ok, or to make the improvement anyway, and I know which of those two is the safest way. I will be making the improvement.