center of gravity?

[dolio]

Calculating the center of mass isn't too difficult, as I recall. You can separate it along each axis. For each mass, determine its position, then the center of mass is simplym1*x1 + m2*x2 + ...)/(m1 + m2 + ...)So, you multiply the masses by their position, add them together, and then divide out by the mass to determine the average position of the accumulated mass.I don't do spreadsheets, really. However, it seems to me it'd be pretty simple to have a column for mass, and then columns for the corresponding x, y and z positions of those masses. You can take those and calculate the moment (m*x; I think that's the correct term) row by row, as well as the total mass, and then at the end, divide out by the total mass to determine the overall center of mass (the overall center point can be found by finding the centers in each axis independently).From what I've read, most drifting setups want as close to a 50/50 weight distribution as possible, so a center of mass of 0 along the length of the car (assuming the 0 of each axis is in the exact center of the car) would be desirable. And of course, in the size-to-side direction, you'd want it to be 0. I'm not sure about the z-axis, however.Hope this helps a little.