Forward Stability
NOTES:
1. When the vehicle is loaded, the combined center of gravity shifts toward line A-B.
Theoretically a load that will cause forward tipover will result in the CG at or past the
line A-B. Therefore, in actual practice, the combined CG should never be at line A-B.
Rated loads will result in the combined CG always being well within the stability
triangle.
2. Simply adding additional counterweight will not solve forward stability issues,
because added counterweight will cause the truck center of gravity to shift toward point
C and will result in a truck that is less stable laterally.
Forward stability is directly affected by how close Point E is to the line connecting points
A and B. If for any reason the combined center of gravity of both truck and load crosses
line AB, the truck will tip forward.