When you see the driver adjust differential settings , he is adjusting the power between the rear tires, sometimes it is used to cure over/under steer on a car. I could be wrong though?
Simon: Nils? You can close in now. Nils?
John McClane: [on the guard's phone] Attention! Attention! Nils is dead! I repeat, Nils is dead, ----head. So's his pal, and those four guys from the East German All-Stars, your boys at the bank? They're gonna be a little late.
Simon: [on the phone] John... in the back of the truck you're driving, there's $13 billon dollars worth in gold bullion. I wonder would a deal be out of the question?
John McClane: [on the phone] Yeah, I got a deal for you. Come out from that rock you're hiding under, and I'll drive this truck up your ass.
m3_lover wrote:When you see the driver adjust differential settings , he is adjusting the power between the rear tires, sometimes it is used to cure over/under steer on a car. I could be wrong though?
Pretty much says most of it but they also use the differential settings to help stabilise the car under braking and to help prevent locking up individual rear tyres
I know that they have LSDs (limited slip diffs) because a diff at 100% is locked and 0% means that if one wheel is easier to move it will get the most power(road cars usually have this setting.) An LSD allows variable amounts because 100% will mean that both tyres have equal power supplied but will increase tyre wear greatly around corners.
Murphy's 9th Law of Technology:
Tell a man there are 300 million stars in the universe and he'll believe you. Tell him a bench has wet paint on it and he'll have to touch to be sure.
With a diff which is 100% locked you have the best acceleration
out of a straight line.
In corners the inner wheel has a smaler way to travel than the
outside wheel but this is not possible if the wheels are 100%
conected. You get wheelspin at the inner wheel which causes a lot of
friction.
With a diff who is 0% locked you have good corner abilities
but bad acceleration and if one wheel has no contact to the
gound or is on ice or water you have no acceleration because of this
the drivers change the diff settings in the rain.
but they also use the differential settings to help stabilise the car under braking and to help prevent locking up individual rear tyres 
