# Thread: A rigger looking for help!

1. ## A rigger looking for help!

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:

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.

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

3. Thanks Kelly....

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

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