Gear Changing Smooth gear changing is the first of three key foundation skills you need to learn, the others being steering and clutch control. Gears can be changed up or down. This has nothing to do with the direction you move the gear lever, it simply means that you change to a higher gear (4 or 5) or a lower gear (1 or 2). The basic rule is that you change up through the gears as the speed of the car increases and down when you need more power from the engine. For example, you would change down to a lower gear when climbing a hill or pulling away at low speed. The gears determine the amount of power available from the engine. First gear provides the most pulling power but the least potential for speed, whilst fifth gear which provides the least pulling power allows the greatest range of speed. The following table indicates typical speed and revs for changing gears up or down. Manual transmission change speeds - UP - Gear Change Approx. Speed Tachometer (Revs) 1st – 2nd 2nd – 3rd 3rd – 4th 4th – 5th 25 km/h 40 km/h 60 km/h 80 km/h 2,000 – 3,000 rpm 2,500 – 3,500 rpm 2,500 – 3,500 rpm 2,500 – 3,500 rpm Manual transmission change speeds - DOWN - Gear Change Approx. Speed Tachometer (Revs) 5th – 4th 4th – 3rd 3rd – 2nd 2nd – 1st 65 km/h 45 km/h 35 km/h 15 km/h 2,000 rpm 2,000 rpm 2,000 rpm 1,500 rpm The basic gear changing rule is ‘brakes to slow – gears to go‘. As the car increases speed, change up through the gears. When you want to slow down, use the foot brake. You need only change to a lower gear when you need the accelerator again to ‘drive’ the car.
Selective gear changing means you sometimes miss out gears, for example, by changing from fifth or fourth gear to second gear. This method is called ‘selective’ or ‘block’ gear changing.
There are also times when you might selectively change up, for example if you have used a lower gear such as third for better acceleration you might be able to change to fifth gear when you have reached your intended cruising speed.
To operate the gear lever we use a method known as ‘palming’. You can practice this when the car is stationary and the engine is switched off, but make sure that you keep the clutch pedal pressed down to the floor.
Neutral
The gear lever will automatically spring to the central neutral position when not in a gear. This is very useful when trying to find and select third or fourth gear.
First gear
To select first gear place your left hand onto the gear lever, palm away from you. Cup your hand around the gear lever and move it across to the left and forward.
Second gear
To move from first to second gear keep your hand on the gear lever, palm away from you, apply slight pressure to the left to stop the gear lever springing back to the central neutral position, and move the gear lever straight back.
Third gear
Now move your hand so that your palm is facing you, cupping the gear lever. Move the gear lever forward, allow it to spring into the central neutral position then move it forward to select third gear.
Fourth gear
Keeping your hand in the same position, move the gear lever straight back to select fourth gear.
Fifth gear
To select fifth gear keep your hand in the same position and move the gear lever forwards, across to the right against the neutral spring and forwards.
The correct sequence for changing gear is as follows:
Make sure that it is safe to change gear. Any place where it is necessary to use both hands to steer the car, such as a corner or bend would not be suitable.
Next, ease off the accelerator pedal just prior to depressing the clutch pedal. The two actions are almost simultaneous.
Select the appropriate gear using your left hand while being careful to look ahead and not at the gear lever.
Release the clutch pedal just prior to reapplying pressure to the accelerator pedal with your right foot. Again the two actions are almost simultaneous.
This will dramatically reduce the power being transmitted from the engine to the gearbox, enabling you to select a gear without causing any damage to the gear mechanism.
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Now, let's discuss the concepts mentioned in the article about gear changing.
Gear Changing
Smooth gear changing is one of the key foundation skills in driving, along with steering and clutch control. Gears can be changed up or down, regardless of the direction you move the gear lever. Changing up means shifting to a higher gear (4 or 5), while changing down means shifting to a lower gear (1 or 2).
The basic rule for gear changing is to change up through the gears as the car's speed increases and change down when you need more power from the engine. For example, you would change down to a lower gear when climbing a hill or pulling away at low speed.
The gears determine the amount of power available from the engine. First gear provides the most pulling power but the least potential for speed, while fifth gear provides the least pulling power but allows the greatest range of speed.
Manual Transmission Change Speeds
Here are the approximate speeds and tachometer (revs) for changing gears up and down in a manual transmission:
Up - Gear Change:
- 1st to 2nd: 25 km/h, 2,000 - 3,000 rpm
- 2nd to 3rd: 40 km/h, 2,500 - 3,500 rpm
- 3rd to 4th: 60 km/h, 2,500 - 3,500 rpm
- 4th to 5th: 80 km/h, 2,500 - 3,500 rpm Down - Gear Change:
- 5th to 4th: 65 km/h, 2,000 rpm
- 4th to 3rd: 45 km/h, 2,000 rpm
- 3rd to 2nd: 35 km/h, 2,000 rpm
- 2nd to 1st: 15 km/h, 1,500 rpm
Selective Gear Changing
Selective gear changing refers to the practice of skipping gears during gear changes. For example, you might change from fifth or fourth gear directly to second gear. This method is called "selective" or "block" gear changing.
There are also times when you might selectively change up. For instance, if you have used a lower gear such as third for better acceleration, you might be able to change to fifth gear when you have reached your intended cruising speed.
Operating the Gear Lever
To operate the gear lever, a method known as "palming" is used. Here's a step-by-step guide:
- Place your left hand onto the gear lever, palm away from you, to select first gear.
- Move your hand across to the left and forward to select first gear.
- To move from first to second gear, keep your hand on the gear lever, palm away from you, and apply slight pressure to the left to prevent the gear lever from springing back to the central neutral position. Then, move the gear lever straight back.
- For third gear, move your hand so that your palm is facing you, cupping the gear lever. Move the gear lever forward, allow it to spring into the central neutral position, and then move it forward to select third gear.
- Keeping your hand in the same position, move the gear lever straight back to select fourth gear.
- To select fifth gear, keep your hand in the same position and move the gear lever forwards, across to the right against the neutral spring, and forwards.
Correct Sequence for Changing Gear
The correct sequence for changing gear is as follows:
- Ensure that it is safe to change gear, avoiding situations where both hands are needed to steer the car, such as corners or bends.
- Ease off the accelerator pedal just before depressing the clutch pedal, almost simultaneously.
- Select the appropriate gear using your left hand while looking ahead, not at the gear lever.
- Release the clutch pedal just before reapplying pressure to the accelerator pedal with your right foot, again almost simultaneously. This reduces the power transmitted from the engine to the gearbox, allowing you to select a gear without causing damage to the gear mechanism.
Remember, practice and experience are key to mastering smooth gear changing.