Iplayfarmer
Super Member
this is from your dump trailer build comment #18,
The minimum pressure pump I would get would be 1700 PSI, and I have a 2" cylinder that is 24" retracted and 36" extended. This provides just over 5300 pounds of push force. I ran the numbers once already for attaching the cylinder base near the front and pushing back. This was going to require me to have the base of the cylinder something like 14" below the deck, and When fully extended it would only dump the trailer to about 33 degrees. That was not acceptable. If I attach the cylinder to the furthest forward point on the dump bed and the base of it in front of the rear axle, I only need a 16.3 degree angle to provide the 1500 pounds of upward force. I would have to have the base of the cylinder at least 6.72 inches below the deck. I can live with that. This also will dump the bed to about 51 degrees.
I may have read elsewhere that 15* would be minimum angle to be able to dump it.
I get it now!
For my application I needed at least 15 degrees to generate the lift I wanted. The necessary angle is going to vary depending on anticipated loads, hydraulic pressures, position of the ram, etc.