# Car's Center Gravity of Height

• Vipcanabis
at the track i measured 20 cars and found that the mass centroid was within 1/2 inch of the line drawn between the camshaft and the rear axlef

#### Vipcanabis

Hi, I am calculating about Drive Brake system. Now I am stuck at Hg (I mean car's center gravity of height), I just don't know how to calculate it.
Will anybody help me ? I am really need it
Best Regards,

if the shape of the car is simple like a double box car or box type sedan then simply divide the car in three sections of front , middle and rear, choose an origin. Further it is a basic problem

see old post Jul22-09, 11:03 AM

Race car suspension Class

I just don't know how to calculate it.

What don't you know? Measuring the CG height on an actual vehicle or estimating the CG height of your concept car from drawings or maybe even something else.

Ok, here I got :
Height x Width x Length = 2740 x 2060 x 7080 (mm) = 107,874 x 81,1 x 278,74 (Inch)
wheelbase = 4085 (mm) = 160,83 (Inch)
Car weight (no load) = 4160 (Kg) = 9152 (lbs)
Front Axle weight = 2130 (Kg) = 4686 (lbs)
Rear Axle weight = 2030 (Kg) = 4466 (lbs)

So, can you help me calculate the Car center of gravity of height (y-axis). I am thanks so much !
Thanks for interesting and helping me

Ok, here I got :
Height x Width x Length = 2740 x 2060 x 7080 (mm) = 107,874 x 81,1 x 278,74 (Inch)
wheelbase = 4085 (mm) = 160,83 (Inch)
Car weight (no load) = 4160 (Kg) = 9152 (lbs)
Front Axle weight = 2130 (Kg) = 4686 (lbs)
Rear Axle weight = 2030 (Kg) = 4466 (lbs)

So, can you help me calculate the Car center of gravity of height (y-axis). I am thanks so much !
Thanks for interesting and helping me

With these numbers, it's impossible to determine exactly. Best guess would be somewhere between one third and one half of the height of your car (which seems really tall!).

So, what do I need to determine exactly the CG height ? Please help, just a little more. I got the most specification of the car

Get the all aggregate weights.Locate their indiviusal CGs in the car. Then you can easily calulate the CG position by simple CG formula x=(m1x1+m2x2)/(m1+m2) similarly y and z.