Toymods Car Club Inc: General Car Talk => Anyone Got A DRIFT Spec Toyota ^^?

Toymods Car Club
www.toymods.org.au

F.A.Q.

Home

Members

Toymods » General Car Talk » Anyone Got A DRIFT Spec Toyota ^^? Show: Today's Posts :: Show Polls Email to friend

Author

Topic

Rex_Kelway
Forums Junkie

Location:
Adelaide
Registered:
May 2002

Re: Anyone Got A DRIFT Spec Toyota ^^?	Fri, 15 November 2002 05:00

Ask yourself one question, why does everyone who knows what theyre doind (inc Orido and Kiechi) that slides a car bother to wind on copious opposite lock if the front wheels have no grip? I'm sorry lads but this steering with the throttle concept gets blown way out of proportion. Yes, to a degree you can control a cars rotational attitude around the vertical axis with throttle input but there is far, far more to the equation than what you are suggesting. Even this little spiel won't cover it all. [Imagine a RWD car is infinitely sliding around a fixed position. With front steering wheels locked into over-steer] Forget the rear wheels for now. Centrifugal force will throw an object out of a constant arc unless it is tethered to the center point. Think of the front wheels then as the tether, the grip generated by them (on opposite lock) confining the car to an arc with that same center point. Because this tether is at the front the rest of the car will swing at an angle perpendicular to that given point around the arc, as the rear creates no friction Lose grip on the front wheels and the car will be thrown from the arc. (A body in motion will continue in that straight line unless a force of change (the tether) acts upon it) Now lets add the rear wheels to the equation. [Assuming constantly spinning at 50% of peak torque and 100% front end grip] The friction generated by the rear wheels, while they are spinning is still enough to push the car forwards, only because they are spinning the tyres lateral grip limits become compromised, however they are still generating some level of friction to resist lateral motion. Because the spinning wheels are still generating some level friction they push the car forwards into its effective steering arc [the tether]. Also creating drag, in that the rear wheels are opposing the centrifugal force trying to swing the car at the perpendicular angle mentioned earlier thus the car will swing at some angle between 0 and 90 degrees to its steering arc. This is where steering with the throttle comes into it. Stomp on the throttle [100% torque loading] and the friction generated by the rear wheels will be reduced. This reduces the lateral drag acting against the centrifugal force and yaws the car to a sliding angle greater than is previous. (the automobile over-steers more) as the body yaws the fixed steering angle . Reduce the amount of throttle [approx 20% torque loading] and the rear wheels will generate more friction, hence pushing the car harder into its effective steering arc. This combined with an increase in rear end drag will push the car into a larger rotational arc. Note that at no point do the front wheels lose their grip, the grip generated by the front wheels is a crucial ingredient in determining the arc at which the vehicle travels. The throttle input can be used to alter the cars radius from the imaginary center-point by alter the angle from the arc and also forcing the car harder into its effective steering grip. The throttle cannot however steer the car, general steering direction is a product of front wheel grip and rear wheel friction pushing the car into this grip thus steering angle. Remember the front wheels can only lose their lateral grip with inertia or torque loading. And when the friction generated by the tyres overcomes this inertia the front wheels stop and stay put while the rear end with its lack of friction continues to force the car to yaw Remove any steering angle and you'll end up with perfect donuts as the rear end will spin, pivoting on the lateral grip generated by the front wheels. Like I said earlier there is far more to the equation like inertia and weight distribution. But if you think Im going into that, Youre Crazy. Nark I think is referring to an 'inertia' drift where the car comes in very hot and uses its inertia to push it into a slide, however this still uses very much counter steered front end grip to prevent it from swapping ends. [Updated on: Fri, 15 November 2002 05:11] [Report message to a moderator]

[Message index]

-=] Back to Top [=-

Current Time: Mon Jul 21 11:02:58 UTC 2025

Total time taken to generate the page: 0.0063579082489014 seconds

.:: Contact :: Home ::.