COG does not matter? Haha
For all the doubters, here we go:
“X” The Wheelbase Center of Gravity (WBCG)
(1 - (WF / Wt)) * LWB = WBCG location, in inches, behind the front axle.
(1 - (2420 / 6063)) * 100 =
(1 - 0.541667) * 100 =
0.46 * 100 = 59.980 Inches behind the front axle
“Y” The Wheel Track Center of Gravity (WTCG)
(1 - (WP / Wt)) * LTB = WTCG in inches, from the passenger side tire edge
(1 - (2986 / 6063)) * 61 =
(1 - 0.4375) * 61 =
0.5625 * 61 = 30.958 Inches from the passenger side outer tire edge
“Z” The Center of Gravity Height (HTCG)
HFd = HF2 - HF1 = Height difference between front axle level and elevated
HFd = 41.3 – 16.0
HFd = 25.3 inches
LWBn=SQRT (LWB^2 - HFd^2) = Length of the shortened wheelbase when elevated
LWBn=SQRT (100^2 – 25.3^2)
LWBn=SQRT ((100 * 100) – (25.3 * 25.3))
LWBn=SQRT (10,000 – 640.09)
LWBn=SQRT (9359.91)
LWBn=93.599 inches
WRd = WR2 – WR1 = Weight added to rear axle
WRd = 3867 – 3627
WRd = 240 lbs.
HTCG = HF1 + ((WRd * LWB * LWBn) / (Wt * HFd)) = Your CG Height
HTCG = 16 + (( 240 * 100 * 93.599) / (6063 * 25.3))
HTCG = 16 + (2,246,376.0 / 153,393.9)
HTCG = 16 + 14.64
HTCG = 30.64 Inches above the tire patch
COG on a stock D2 is:
59.98 Inches behind the front axle
30.96 Inches from the passenger side outer tire edge
30.64 Inches above tire patch
If Rob wants to volunteer his rear door contraption information we can figure out the negative affects it has on his D2 in terms of COG. Based on 200lbs, and not knowing exactly where it's centered, we can guess it would be 64.08 inches behind the front axle, or 35.92 inches in front of the rear tire; and of course the COG above the tire patch is going to go up, too.
In other words, yes, 200lbs will severely impact your COG, which in return affects your vehicles off-road ability. But hey, it's going to look good, right?