Want To Know the Theory Behind SKid.
#1
Want To Know the Theory Behind SKid.
i was just wondering how come when a car loss traction in the front wheels it will push to the same direction as the skid and when the rear wheels loss cootrol the car will fishtail instead of pushing to the direction of the skid.
#6
When a front wheel drive car loses traction, the front will begin to push outward (understeer).
When a rear wheel drive car loses traction, the rear will swing around (oversteer).
I'm sure some of our resident Auto-X or physics people can elaborate better.
When a rear wheel drive car loses traction, the rear will swing around (oversteer).
I'm sure some of our resident Auto-X or physics people can elaborate better.
#8
Its a matter of inertia and grip. If the wheels have no grip (or friction), the inertia of the car will pull the end of the car with the least grip or friction in the direction of travel.
Its basic physics.
Its basic physics.
#14
Originally posted by DumbasSi
When a front wheel drive car loses traction, the front will begin to push outward (understeer).
When a rear wheel drive car loses traction, the rear will swing around (oversteer).
I'm sure some of our resident Auto-X or physics people can elaborate better.
When a front wheel drive car loses traction, the front will begin to push outward (understeer).
When a rear wheel drive car loses traction, the rear will swing around (oversteer).
I'm sure some of our resident Auto-X or physics people can elaborate better.
I could go into depth about slip angles, traction and what happens when those are exceeded.... but I really don't feel like it...
basically the simpliest explination is understeer is when the car "pushs" or "goes in a straight line even if you have the wheels turned" basically this is caused by excedding the slip angle in the front tires causing them to not have enough girp to apply the direction change... they loose traction and this causing the interia of the vehicle to keep the car moving in the direction it was going.
the other thing that happns is oversteer.. you turn the wheel and the back tires lose traction... there are several ways this can possibly happen on my race car forexample, it's ussually wieght transfer that causes it... I eneter a corner in such a way that all the wieght of the car moves to the outside 2 tires this causes the inside rear wheel to lift off the ground... when a tire doesn't touch the ground there is no traction. when there is excessive weight on a tire like the outside rear wheel, this exceeds the tire's slip angle, it loses traction and interia, takes over that tire keeps wanting to go "straight" or towards the outside of the corner, mean while the front tires are perfectly happy with ther lives and are changing the direction of the front end of the car. this causes the back end to swing out... since the back end of the car is generally connected to the front end of the car this difference in direction of forces results in rotation. and thats why when you lose traction with the back tires, you "fishtail"
anyways it is way more complex then this and no I refuse to explain it on the interent ..
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