Why you should not PARTIALLY press the Clutch ?

Why you should not PARTIALLY press the Clutch ?


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

About the Author: Michael Flood

100 Comments

  1. A mechanic a few years ago complained about the number of old people coming in, getting a new clutch and then coming back and saying that it was faulty.

    He said that when mechanics went out with the old people, to see how they were driving, they were riding the clutch and, in the same year, a girl who lived near him said her grandmother had to get 2 new clutches in a year.

    I followed an old lady out of a car park who had been riding the clutch the whole time I was walking to my car and leaving the car park. Luckily, she turned off at the next roundabout, so I wasn't stuck behind her for long.

  2. In the UK, to get a driving licence, you first have to learn how to drive a car, and then prove that you've reached a suitable level of proficiency. I can't imagine how anyone could need to refer to YouTube to learn one of the most basic elements of driving. Still, fascinating video for anyone that maybe lives somewhere where you don't need to know how to drive before being allowed to attempt it.

  3. 1:47 "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" WHAT!!!!!!!!!!!!1111111 The gear that the VEHICLE NEEDS depends on your speed… This is all basic info even stated in an owners manual that all states the speed your car is designed for each gear that the car has

  4. Engineers are smart in the sense that they design vehicles the way they do because one day the engineers came home to find his wife in bed with a mechanic!

  5. If that were true – clutches would be switches – they aren't for a reason. The basis of this video is false.

  6. ah no wonder i never heard of this… i had seen some people do this but i never even thouth of that… as changing gear down is not really any dificulty at all

  7. Clutch riding is good for many reasons. first of all the drive is much more pleasant. Then its definitely better to clutch ride compared to getting ur engine almost ripped apart at low speeds in traffic jams. it also helps with the fuel consumption.

    Now all ive said is very much true for diesel cars. cars that run on gasoline are kind of different story coz they dont have as much torque as their counterpart. so even if you attempt to clutch ride u wont benefit as much.

    diesel car you can pretty much drive with just the clutch..

  8. Well, this is not 100% accurate. My car wont't start even moving without riding the clutch on first gear. Or it will violently bump and stall. Or it will just stall, depends on how much throttle I use. I need to ride the clutch for a second until the car will start moving at least by the speed of walk. Then I can fully release the clutch.

  9. "Do you know that s bad for your car" – clearly they know if they already replaced the clutch, if they didn't then it's not really a problem for them, huh?

  10. Guis there is no thing as riding cluch. Car makers use it for propoganda of products and you pay large moneys to replase cluch. I drive my car for 6 years and riding cluch and nothing was broke in 6 year. Wake up sheep.

  11. Actually you don't need to press the clutch to change gears; as evidenced by anyone whose clutch has completely failed or knows instinctively how to 'float' the gears.

  12. i disagree, eaton fuller has clutch that should only be pressed fully down when starting to move on 1st gear. it's on the manual.

  13. 68 yr old been driving stick since i was 15  never heard of pushing clutch half way unless you were trying to ruin it. have people really become that STUPID

  14. He said gear changing can only occur if use clutch, obviously you don't drive manual vehicles, there is something called timing, each gear works optimally at a given rpm if u understand this u can avoid using clutch

  15. In Pakistan, if one is driving manual car, due to traffic, it's impossible to drive even in first gear without pressing half clutch or otherwise releasing it will shut your engine down after every 10 meters.

  16. Is it so difficult to just push the clutch grab the shifter and downshift one gear. How is it that people keep creating lazier and lazier ideas. I want to smack every person in the world or I could quote the Skrillex song I want to kill everybody in the world either one would work though.

  17. In the third and up is amust to disenggaged the clutch pedal but in the first and second gear it is not applicable during slow moving traffic,i was once a jeeney,cab,cargo,and bus driver now retired,make the message clear and test it on the road when it is applicable or not,,,,,,,

  18. Bhai wear tear ko goli maro , it is sometimes very important to drive the vehicle with partial clutch , it is sometimes crucial especially while riding in a traffic

  19. In the Philippines 🇵🇭 specially in heavy traffic you need to ride the clutch all the time.. 😂😂😂😂

  20. Guys, i think the guys is talking about those folks who rest their foot on the clutch for long periods of time. Not the normal operation of using the clutch for low speed movement.

  21. the point of uphill in unavoidable was my ques about this vid coz i was not able to use clutch completely
    now i am sure it is unavoidable to use full clutch …
    as we need friction to keep stopped right before we are about to start moving forward on uphill
    thanks for the video.

  22. 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

  23. 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…

  24. And my driving instructor told me to partially press clutch and apply brake when needed when driving bumper to bumper in traffic.

  25. I watch video upto 3 minutes than I stop and think y I am watching this cause I have an automatic car…….hehe….

  26. These videos are so useful and so helpful. I am really greatfull for these videos . Thank you Learn Engineering

  27. This is an American explanation but I could help but notice there is a BMW been driven by what would look like a gypsy traveler with a farmer cap and Nike airs on 😂🤣

  28. When the vehicle moving downwards, I usually fully applies clutch and managing speed by applying break slightly,is there any problem if we do this

  29. Everyone mocking Americans for not using manual don't realize that automatics will eventually be the main transmission type in Europe. It's inevitable as prices fall and efficiency rises. Remember US used to be primarily manual as well. In fact I wouldn't be surprised what with the self driving tech European countries find a way to ban citizens from driving cars altogether.

  30. 'Resting your foot on the clutch' does fuck all. Why would anyone partially depress the clutch? Stick to an automatic if you can't operate a manual car.

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