DB,
Follow this link to the thread entitled something like, "Suites Weights" and check out the document that is in that first entry by the Fifth Wheel Forum administrator. Be sure you are logged in so you can click on the "Download" link.
Once in that document, you will see weight for trucks, trailer axles and pin weights that Stacey had done over the years. The pin weights in that document are under various models and sizes and may give you a "ballpark" idea of pin weights.
http://www.5thwheelforums.com/forums...pic.php?t=3153
Terry