Rice Lake Intercomp SW™ Deluxe Portable Vehicle Scale - Manual (Page 33)

SW Users
REV G, February, 2000
33
Figure 2: Manual Vertical C.G.
Find longitudinal C.G.:
Rear wgt X Wheel base
Total Wgt
1577 lb x 105"
2850 lb
= 58.1"
Raise rear end and
find C.G. again:
1596 lb x 105"
2850 lb
= 58.5"
Solve for vertical C.G.:
V C.G. =
Wheel base X (F C.G - L C.G)
Lift
105" x (58.5" - 58.1")
9"
= 4.7"
Add in height of wheel hub: Vertical C.G. = 13" + 4.7" = 17.7"
Wheel base = 105"
LF + RF = 1254 lb
F LR + RR
Lift = 9"
F C.G.
L C.G.
= 1596 lb
L LR + RR = 1577 lb
13"
V C.G = 4.7" from hub
V C.G. = 17.7" from ground