Rice Lake Intercomp SW Deluxe Portable Vehicle Scale User Manual
Page 31
SW Users
REV G, February, 2000
31
Please examine this picture:
Flat position
Raised position
High C.G.
Low C.G.
Small change for low C.G.
Large change for high C.G.
As you can see, the higher the C.G. is, the more the C.G. will move forward when you
raise the rear wheels. With this change and a little geometry we can find out the actual
C.G. height. Please examine the picture below.
Flat position
Raised position
Change in C.G.
Unknown side
Known lift
Known wheel base
Same angle
Wheel base X Change in C.G.
Lift
Vertical C.G. =
As the car is lifted/rotated a triangle is formed by the front hub, wheel base, and known
lift. A second triangle is formed by vertical C.G. location, distance from the wheel base
line, and change in longitudinal C.G. location. These two triangles share the same
angles so they can be considered similar triangles and compared directly.