The Hackney Drop/Pinch Frame Technology
provides full 40” compartment depth from lower
floor to the top of the compartment. The modification
has been stress tested to provide up to 2.8 times
the strength of the original frame. Download
PDF file for further technical information.
Highest
stress shown in red. Note all red points in test
represent where spring shackles are bolted to
frame with one minimal pink “hot” spot
at pinch frame.
Shown
with 10,000# receiver superstructure installed
