acceleration factor = ###.#
This is the horsepower adjustment. More means higher horsepower. Less is slower. Pretty simple.
rev ratio = {#.##, #.##, #.##, #.##, #.##}
This is the default gearing for your chassis. It goes in this order - {1st, 2nd, 3rd, 4th, Final}. Setting these higher or lower only affects what the default gearing (when you hit restore deafults) is.
tyre width = {#.#, #.#}
This is the width of your tires. The first setting is the front, the second half is for the rear tires. Although this setting has not visible affect, you will be able to feel the difference for sure. I recommend this as an adjustment that goes up and down with horsepower. A high horsepowered chassis with narrow wheels is hard to drive, and a low-powered car with overly wide wheels is hard to drive.
wheel inertia = #.###
Increasing this setting makes you car not want to change directions, be it turning, accelerating, or slowing down. Less wheel inertia does the opposite
centre of gravity = {#.#, #.###, #.######}
The COG is something that can have a big affect on your chassis. The first number adjust the where the center of gravity falls left to right on the car. Zero would be in the middle, while a negitive number moves it left, and a positive number moves it to the right. The middle number moves the COG up and down on the car, and the last number moves it from front to back (negative being backwards, positive begin forwards).
wheelbase front = {#.#####,#.#####,#.####}
These setting adjust the position of your front wheels. The first number determines how wide you front end is (wider is better?). A negative number makes a more narrow front end. The second number adjust the height of your front wheels. You can literally make the wheels appear above the hood (although you won't be able to turn with them up there). A negative number makes them higher. The last number is the forwards/backwards adjustment. Again, you can make you chassis pretty weird by using some of these lines. A positive number moves your front wheels fruther forward.
wheelbase back = {#.#####,#.#####,#.####}
Works exactly the same as "wheelbase front". So just see above.
wheel radii = {#.#####,#.#####}
This adjust the actuall size of your wheels. the closer to 0.00000 you get, the bigger you wheels get. I wouldn't recommend going below 3.0 or you may have some 'interesting' results = ). One neat trick I learned is by using this in conjunction with the wheelbase settings, you can make your own monster truck! The first number in this command is for the front wheels, and the second is for the rear wheels.
Travel
max travel fl = #.#
max travel fr = #.#
max travel rl = #.#
max travel rr = #.#
These setting increase the travel of the shocks. Higher number is longer travel.
; roof points relative to COG
nodefbody = 1
roof front = {2.032251, 0.304062, 8.05}
roof back = {2.232251, 0.9, -8.3}
body base 0 = {0.000000, 0.9, 0.0}
roof front radius = 2.058436
roof back radius = 2.353498
body radius = 2.5
cockpit = {0.000000, 1.975046, -1.530117}
core base = {0.0, 0.567, 0.70883}
If anyone understands how any of these settings work, please E-Mail me. I can't tell that they make any difference, but I'm sure they do something, or they wouldn't be included.