Sunday, January 13, 2008

DRIFTING



Drifting is really nothing new. If your car's rear end has ever swung around on a wet road, and you've struggled for 50 feet to get control, you've drifted. Even in car racing, drifting is pretty old hat. When race car drivers go around a turn at high speed, especially in the early days of racing when tires didn't have the grip they do now, the back end would sometimes swing out. The car would either spin out or the driver would recover from the drift and keep moving. Today, even with tires that could probably grip a vertical wall, the ability to drift without spinning out is an enviable skill in racing. The best drivers can control a drift so they can use it to their advantage -- a driver who can take a "non-ideal" path through a turn and brake late, causing the car to lose traction through the turn, has far more opportunities to pass than a driver who can't manage a drift.


Drifting competitions are judged based on line, angle, speed, and show factor. Line involves taking the correct line, which is usually announced beforehand by judges. The show factor is based on multiple things, such as the amount of smoke, how close the car is to the wall, and the crowd's reaction. Angle is the angle of a car in a drift, Speed is the speed entering a turn, the speed through a turn, and the speed exiting the turn; faster is better.


Heel Toe Shifting (Double Clutching)

Is a technique used when Drifting. Proper heal toe shifting keeps the engine, transmission, and wheel speed matched up so there is no jolt through the driveline while downshifting.


1. Before entering a turn, do your initial braking to transfer your vehicle’s weight forward. Double clutch / heel toe downshift (see next step). Turn your wheels into the corner. Carry enough momentum into the corner to induce oversteer.
2. Clutch in, bring your vehicle into neutral, and release clutch. While on the brakes, slide your right heel over to the gas pedal and rev up (blip) the engine to match transmission and engine speed. Without matching revs on downshift, the engine speed will cause a jolt through the driveline, upsetting rear traction uncontrollably.
3. After matching revs, clutch in, and downshift your vehicle. Double clutching is optional, but reduces wear on your transmission. Use e-brake if momentum and downshift do not create enough oversteer.
4. Release the clutch, get off the brakes, and press the accelerator. Accelerate enough to keep tires spinning to continue oversteer. Add steering input (countersteering) to keep your vehicle from pivoting or spinning out.

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