I've got a hyraulic hoist designed for use on a swivel base bolted to concrete. see:
I've built a portable base for it with 3 horizontal legs at 90 deg to one another, two are longer than the maximum jib extension and the third can be tied back to a building which becomes a counterweight. The idea is to be able to use it to lift stuff on & off boats. I've already used it successfully to lift a 150Kg flywheel onto a boat, but want to establish whether my setup will safely cope with the maximum
500kg rating of the hoist, or how I'll need to modify it to that end. The legs are 4" x 2" RHS, set on edge. Can anyone point me to how to calculate this, or even to someone who can do it for me without charging huge consultancy fees? Ultimately I may need to justify to the powers that be that it is safe, but initially it's for my own peace of mind.Cheers Tim
Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service