What is the heel toe movement called? The role of the heel toe action

Dream heels, Takumi.

Maybe many people don't understand why this action is done, in fact, this action is not very helpful to improve the lap time, but it has a great protection effect on the gearbox and clutch, and can also prevent the engine brake instantaneous transmission during the downshift process caused by the loss of control caused by the lock of the driving wheels (the effect is especially obvious in FR cars and rainy days).

When it comes to protecting the gearbox and clutch, in a racing race, the gearbox and clutch of a car work at high intensity, and sudden force can cause damage to parts. In the downshift process, if you don't use the heel toe, the engine speed may have come down (the engine flywheel of the racing car is relatively light, the inertia is small, so the speed drops quickly), the flywheel (driving disk) speed is relatively low, the friction disc (driven disc) of the clutch is still very high, if you release the clutch soon at this time, there will be a relatively sliding process, plus the braking of the racing engine is generally relatively large, this force is easy to cause unnecessary wear, wear clutch is a small thing, The most serious situation is that the instantaneous braking force is transmitted to the driving wheels, which will cause the speed on the surface of the tire to be instantly lower than the vehicle speed, and the relative sliding with the ground will lead to a decrease in grip, which can seriously cause the vehicle to lose control.

The heel toe movement, the so-called heel toe action, is to use the right foot fuel replenishment technique to lower the gear to the appropriate gear when exiting the corner before cornering, while braking. The "heel" here refers to the heel, and the "toe" refers to the foot Zena rock toe.

Because at the same speed, the engine speed corresponding to different gears is not the same, taking the fifth gear and the fourth gear as an example, assuming that at the same speed of 100km h, the speed of the general racing car fourth gear will be about 500rpm higher than that of the fifth gear, then when changing gears, there will be a drop between the gears and cause the phenomenon of downshifting difficulties, especially in the spur gearbox. If you don't use the heel toe action, even if you can downshift smoothly, there will be a phenomenon that the wheels pull up the engine speed, which will accelerate the clutch wear at a light level, and damage the engine if it is serious.

If the heel toe action is used at this time, the right foot is slightly replenished at the same time as the brake, so that the engine speed can be pulled up after the clutch is stepped on the left foot, and after the smooth downshift, the engine speed corresponding to the current gear and vehicle speed at the same time as the clutch is engaged, and the engine speed after oil replenishment can still be consistent, and the wheel will not drag the engine speed back as much as possible, which means that the heel toe action is completed beautifully.

Heel&toe has long been hailed as a fetish by car enthusiasts around the world, and many amateur drivers pride themselves on being able to do heel toe movements. In fact, in racing, this action can be said to be commonplace, and it is difficult if you don't want to do it, because the effect of a small action is huge.

At the end of the straight at high speed, before getting ready to enter the corner

1. Press the brake with your right foot to start braking.

2. Step on the clutch with your left foot and start shifting gears with your right hand.

3. In the process of downshifting, after moving out of the current gear, while the gear passes through neutral, the right foot maintains the same braking force and moves to the side of the accelerator at the same time, and presses the accelerator pedal to increase the engine speed.

4. After the speed is increased, then put the gear into the gear to be lowered to complete the action of shifting gears.

5. Release the clutch pedal with your left foot. (If you need to continue downshifting, repeat the 2nd and 5th movements).

6. After completing the whole process before the collapse, the left foot is withdrawn, the right foot controls the throttle, and then corners.

The function of the heel toe: downshift while controlling the engine speed to match the speed of the transmission system.

Effect: Smooth downshift, no loss of power, high speed and high torque after downshifting, suitable for adding celery stool oil to exert force.

The most important thing: the position of the pedals, the height of the accelerator and the brake should be close, preferably flat. I had a low throttle and it was hard to get to the throttle when braking lightly, so I took the rubber off the brake pedal and found that it was much better.

Heavy braking is easier to do: the right leg is supported by the brake pedal, and the heel is rotated to point the throttle. <>

The throttle strength is: the lower the gear, the more fuel is added, and the higher the speed, the more oil is added.

It is more difficult to do when braking lightly: suspend the leg, tap the brake, and tap the accelerator on the heel or the right side of the foot. The difficulty lies in the hanging legs, such as the head of the sui, how to grasp the strength of the accelerator and brake, and need to practice more.

Downgrade to 1st gear: 2 down to 1 is more difficult, generally I park in 2nd gear, and rarely drop to 1st gear. But the person asking this question may not be satisfied with dropping to 2nd gear.

Let's share my experience, 2 down 1, because the tooth ratio is very different, you have to make up for a kick before you can drop in, and the car is very sensitive to oil supplementation, too much or too little will be frustrated, and it takes many times to practice.

Heel toe timing: Be sure to downshift the heel toe in the braking zone before entering the corner, and then enter the corner with oil after entering the low gear. Come out of the corner and refuel. Don't downshift in the bend, let alone follow the toe, centrifugal force will make you move out of shape, difficult to control the force, and dangerous.

Downshift: When you are proficient in downshifting, you can start practicing downshifting multiple times, and you can practice when you encounter a red light. At this time, it is necessary to pay attention to cultivating the feeling of speed and rev, and gradually replenish fuel and downshift until 2nd gear.

When the speed and speed of the car are low, don't follow the toes, and often make up more. In short, the heel toe is still more suitable for high speeds.

After practice, the downshift is fast and smooth, the power connection is like flowing water, at this time it can be said that you understand the driving pleasure of 8 percent, you will expect more corners, enjoy the roar of every refueling, the original driving can be so pleasant!

First of all, it is best not to practice the heel toe movement on an ordinary road, and if possible, it is better to find an open field. After all, the heel toe technique is mostly used on the track. Secondly, the distance between the brake pedal and the accelerator pedal should not be too large, and the height difference should not be too large.

**There are special pedals on it, you can give it a try. Finally, it depends on your own flexibility, for example, 3 down 2, first put the right toe on the brake pedal and tap it, then press the clutch orange finder, downshift, and at the same time, move the heel to the accelerator pedal to make up an empty kick. Note that this is the toe do not leave the brake car pedal, and also maintain a certain braking force.

When the refueling action is complete, lift the clutch to complete the downshift. This process needs to be constantly tempered, including the strength of the brakes, the amount of oil, etc., which are not easy to master. Finally, it is best not to use the heel toe in the urban area, it is easy to get dangerous.

I like racing very much, and I go to run the big cong track day when I have nothing to do, and I take the liberty to share my experience. Suppose you are familiar with the manual transmission car, it is divided into two stages:1

Only practice oil. This can be practiced on the road. On the straight, maintain speed, press the clutch while tapping the throttle, downshift at the same time, slowly release the clutch at first, and you can release it quickly when you are proficient.

2.Try to refuel when slowing down (i.e., heel toe). The general technique and the car are different, but I think there are two general styles.

One is to use the side of your right foot to tap the throttle when you apply the brakes. The other is to step on the brakes to imitate the car, with the toes as the axis Ling Ying, turn the foot, and then use the heel to point the accelerator. Personal experience:

The first one is suitable for making up when it is usually on, and it will be made up at every traffic light if you are proficient. The latter is more suitable for the track. <>