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Clutch Control - How To Do Clutch Control


Clutch Control


The clutch enables the engine to be disconnected from the transmission in order to engage or disengage the gears. It consists of two friction plates. When the clutch pedal is pressed down the two friction plates move apart. This disconnects the engine from the wheels meaning none of the engines power can be transmitted to the wheels.

When you release the clutch the two friction (clutch) plates move together and power starts to be transmitted to the wheels. This is known and the 'biting point'.

The more you release the clutch pedal the more the plates touch and the more power can be transmitted from engine to wheels. Once the clutch pedal is fully released the clutch plates lock together and all the power from the engine can be sent to the wheels.

When you hold the clutch pedal so the clutch is only half engaged it is called clutch control. This can be helpful when needing to drive very slowly such as when carrying out manoeuvres.

Car Clutch System

Slipping The Clutch

This is holding the clutch pedal partially down so that the clutch is not fully engaged. This lets the engine rotate faster than it would if fully engaged. When manoeuvring at slow speeds it is often necessary to 'slip the clutch'. This technique is also useful when driving through shallow flood water, as it allows you to rev the engine higher at low speeds, forcing more exhaust fumes through the exhaust pipe which helps prevent water from travelling up the exhaust and into the car's engine and causing expensive damage.

Slipping the clutch can cause excessive wear to the clutch, however, so use only when necessary.

Coasting

Driving with the clutch pedal pressed down is known as coasting. Obviously every time you change gear you will 'coast', but you should always try and keep coasting to a minimum, as it reduces the control you have over the car because:

  • engine braking will be eliminated
  • vehicle speed downhill will increase rapidly
  • steering response will be affected especially on bends and corners
  • it may be more difficult to select the appropriate gear when required/

Allowing the car to travel in neural gear is also coasting.

Riding The Clutch

Driving at a steady speed with your left foot resting on the clutch pedal is known as 'riding the clutch'. This may seem harmless, as the pedal doesn't seem to be in use, however, clutches contain a clutch release bearing which applies pressure to the pressure plates to aid releasing the clutch plates. Resting your foot on the clutch can cause wear on the release bearing and too much pressure can cause the plates themselves to slip, causing significant wear to the clutch plate friction material.

Changing Gears Steering A Car Starting Off
Stopping A Car Clutch Control Road Junctions
Basic Left Turn Basic Right Turn Box Junctions
Dual Carriageways Meeting Traffic Overtaking
Traffic lights Pedestrian Crossings Roundabouts
Moving Off Downhill Moving Off Uphill Bay Parking
Reversing Into A Side Road Turn In The Road - 3 Point Turn Parallel Parking