On Oct 22, 7:15*pm, "DoN. Nichols" wrote:
......
* * * * Instead -- *if* you have the load still supported by the hook
and arm, when you start to move it, the load will start swinging, and is
very likely to overbalance the crane (assuming the typical engine
hoist).

* * * * However -- if you put some beams (4x4 or so) across the legs,
and lower the load onto those, then pump the arm up just enough to
maintain stress on the top of the load, you can roll things without this
particular problem at least.

* * * * Still -- beware of hitting anything on the floor (e.g. a skinny
piece of wire) which will suddenly halt the crane, as the load is likely
to try to keep going...
* * * * * * * * DoN.

And the instant they pass imbalance they tip FAST!

The crane is at risk for tipping sideways when a line down the chain
would hit the floor outside of the wheel. The swinging load can still
be between the wheels.

I tie the load down in addition to the beams across the wheels. The
last heavy object I moved with my shop crane was an 1100 Lb boulder
that I towed a few hundred feet back into the woods using the crane as
a trailer.