While surfing the web looking for sources for stuff to rebuild the engine in my 85 1-ton toyota truck, I got thinking about the flatbed I want to mount on it. So I started looking for makers of flatbeds to get ideas. They are kind of hard to find, but I found a few including Knapheide, who also make service bodies for trucks.
I saw this picture at the Knapheid site that got me thinking. It is called a Knaphoist and it basically turns a flatbed truck into a dump truck.
It is a very compact design, that I believe I can reverse engineer with some help. I am wondering if any of you hydraulic gurus can take a look at it and make some guesses about the cyclinder specs and how big a pump one would need.