. the Marcy exercycle's seat weld failed!
and, inspecting the weld area, the reason is obvious:
they had the weld strengths reversed:
they needed only light tacks
in the back,
but a good strong seam in the front
because that is getting
a lot of lift pressure;
instead there were only
2 tack welds in the front,
so when the front tacks snapped apart,
then the seat pitched backwards about half a foot .
6.30: proj.gear/exercycle/
recovery from chair`stem`weld failure:
