A rigger looking for help!

[rwelfare]

Hi everyone,

I am hoping you could help me with a formula to find what the lifted load would be when removing a boom and stick from an excavator in one piece? I have the COGs of both components and have calculated the combined COG, I have the measurements from the lift point to COG and fulcrum to COG.

The formula I have been using is:

X = X2 x Y2/Y1

Where:

X = lifted load
Y1 = distance from fulcrum to lift point
Y2 = distance from COG to lift point
X2 = total weight of object.

I might be way off here and any help is appreciated. Just trying to get better.

[Kelly_Bramble]

Yes... that simple equation will help you to locate your lift point relative to the CG.

[rwelfare]

Thanks Kelly....

[dgn1958]

Usually, the excavator boom already has welded lifting hooks in place so you can lift the load in a balanced state.