by bobhenry » Fri Sep 30, 2011 11:28 am
That little "toolbox" ( self leveling shelf ) fully loaded weighs about 7 pounds. What you didn't take into concideration is that it hangs within inches of the lid hinge so the bulk of the weight will be at the hinge point and only a small portion of it is transfered to the hatch bottom. So there is a simple mechanical advantage at work here.
Growing older but not up !