Why you should not PARTIALLY press the Clutch ?

Why you should not PARTIALLY press the Clutch ?

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In manual transmission cars some drivers partially press down on the clutch pedal to make the engine operate more smoothly Some drivers even have the habit of resting their foot on the clutch pedal. This is known as riding the clutch however You know that this habit is really bad for your car In order to understand how a partially pressed clutch can help the engine operate more smoothly but also why this habit can damage your car we first need to learn the basics of the operation of an internal combustion engine and also of the clutch The engine is the muscle of a car it produces the necessary driving force to move the vehicle It should be noted that the torque produced by an internal combustion engine varies depending upon the engine speed In normal driving conditions the drive force produced by the engine is more than or equal to the forces resisting the motion of the car However what happens if the resistance is greater than the drive force at the wheels This will cease the motion of the engine and the engine will stall Fortunately in a car. There is a mechanism to overcome this imbalance between the forces the transmission At the transmission output, you can easily get different speeds by using the gear stick Since the power produced is the product of torque and angular speed? By reducing the output speed you will be able to get higher torque or vice-versa In short whenever the vehicle requires more torque or the supply of torque from the engine is too low you have to drop to a lower gear Let’s see an example of both cases To climb this hill the vehicle needs high torque This is the reason why you use a lower gear on a hill otherwise the engine will stall When the engine rpm is too low the torque supplied by the engine will also be too low This happens when a car starts so to get high torque at the wheels you have to start the vehicle in a low gear This avoids the engine stalling when the car starts This is the professional way to avoid an engine stall Whenever the torque requirement is high or the torque supply is too low you have to shift to a lower gear Some drivers however avoid stalling the engine without changing gear They just partially press the clutch pedal To learn how they do this let’s look at how a clutch works The clutch sits between the engine and the transmission Basically a clutch is a mechanism to discontinue the flow of power from the engine to the transmission In a manual transmission gear changes can only happen when there is no power flow to the transmission And by pressing the clutch pedal you make sure that the power flow is discontinued Now back to the clutch technique consider this situation Here the driver is operating the vehicle in a high gear, but with a low engine speed The torque supplied by the engine is low due to the low engine speed and in addition due to the high gear selected the torque does not get amplified this situation will definitely lead to an engine stall Instead of using a lower gear the driver presses the clutch pedal partially This means that the engine is partially disengaged from the transmission and the load on the engine is greatly reduced This instantly saves the engine from stalling Now whilst keeping the clutch pedal partially pressed he presses the accelerator pedal further This takes the engine speed up to a higher torque level and now he can release the clutch pedal Thus he has prevented the engine stalling without changing down a gear the driver was riding the clutch during this operation Even though this seems like a smart technique Riding the clutch is not good for your car. Let’s see why In a clutch, motion from the flywheel is transferred to the transmission with the help of a friction disk When a good external force is supplied to the disk the motion from the flywheel will be transferred to the transmission due to adequate frictional force a pressure plate spring mechanism provides this external force As long as you don’t press the clutch pedal the spring mechanism will be supplying a strong external force When you press the clutch pedal down completely the pressure plate will move away from the disc with the help of a diaphragm spring Thus, the transmission will be separated from the flywheel In short, when you don’t press the clutch pedal the friction discs and flywheel will move together and when you press it completely the friction discs and flywheel will be separated But what if you only press the clutch pedal partially This will reduce the frictional force between the flywheel and the friction disc and relative motion happens between them This will definitely result in wear and tear of the disc This is why when driving a manual transmission vehicle you should either press the clutch pedal down completely or you should not press it at all partial depression of the clutch pedal will damage the friction disc and the flywheel very quickly In certain situations, it is impossible to avoid driving the clutch However, in the situations listed here you can definitely avoid this operation Please be one of our patrons and next time when you are driving try to avoid partially depressing the clutch pedal. Thank you

4 thoughts on “Why you should not PARTIALLY press the Clutch ?”

  1. Do you have a simulated video on how to put a Manual Transmission parts together? I have a 89 Honda Accord and my mechanic can't seem to put it back together

  2. People really do that.. WTF… I understand if ur at a stop on a hill or some type of situation like that… but other then a very few situations I've personally never seen any1 do that…

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