Centrifugal Clutch – Explained

How does a centrifugal clutch work? What is a centrifugal clutch? Centrifugal clutches are used in go karts, mopeds, chain saws, lawn mowers, and many other small engine powered devices. They work by using the principle of centrifugal force to have a clutch shoe apply a friction pad against the clutch housing, thus rotating a device which requires torque to run. At idle speed, springs hold the clutch shoes in so that there is no torque transfer to the clutch housing.

Related Videos
Drum Brakes – https://youtu.be/LX4mqzoe3BY
Clutches – https://youtu.be/pJj8NvDUSFs

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  1. Post By Duy Tùng Phạm

    well I have a question. I have a 100cc motorcycle with a centrifugal clutch and a multiple friction disks clutch , I can totally understand the accelerating process but what about decelerating? I use engine braking on my motorcycle quite often but I don't know why when the clutch is driven by the wheel it's in engaged mode. Does it has some sort of one way clutch fitted in or something?

  2. Post By Cj Amor

    hey man can u make a video on how honda wave 125 clutch working animation

  3. Post By cartfart

    idk about you but thats cool af

  4. Post By Arjun Bhat

    Is it possible to replace a centrifugal clutch in a scooter(CVT driven, 110cc) with an electromagnetic clutch? And tine the timing and engagement to the speed of the engine at which centrifugal clutch engages?Please reply ASAP.

  5. Post By MrHighpressure

    will it did dis engage at the same rpm it engages at?                 or will the rpm be a little lower?

  6. Post By Agustinus Sinaga

    So for vehicle, this kind of clutch is only used for automatic vehicle. Am I right?

  7. Post By Spartan Clan

    thank you very much sir

  8. Post By Sucharith Battina

    Good Boy.


    the power comes from engine. and then to clutch. then why it goes to transmission ? and if it goes to transmission at the last. then how the varying speed from transmission to the driven shaft ?

  10. Post By Harshit Chourasiya

    Explain how does a vehicle move from rest when it doesn't have the RPM enough to engage the clutch shoes.

  11. Post By Anders Andrea

    Thank you!

  12. Post By Michael Frymark

    What about a centripital clutch? For example, a snowmobile, where it clamps down on a belt as more throttle is applied. I have a basic understanding of how it works, thanks to high school physics, but I would like to see more of the mechanical science behind it that you offer. You do an awesome job of explaining this stuff. I'm more of a mechanic and know what components work with others, but I love that you explain how and why. Keep up the good work.

  13. Post By PunkyB 88

    could you please do a video on how a Hondamatic transmission works? pretty much just Honda and Saturn that i know of use them. where you have a torque converter as you would with a planetary auto but with the manual style parallel gears each one with it's own clutch. i find it hard to explain to people the difference between a typical borgwarner e.t.c vs a Hondamatic

  14. Post By Rob Robertson

    Thanks! Just what I was looking for. Your videos are fantastic.

  15. Post By D. G.

    So this clutch is sprung closed? The spring is tension is critical to its use? What is calculated to find this release tension of the springs?Great vid!

  16. Post By Indrajit Saha

    Your videos are quite astounding and informative also…I have only problem that both the clutch housing and the inner part are moving at same speed ?

  17. Post By Paul C

    The only transmission type I haven't seen you do yet is "CVT Constantly Variable Transmission", or "V-Belt" drives.

  18. Post By Jake Schultz

    I have a passion for understanding more about automobiles and you have definitely broken the ice as they say. thanks alot

  19. Post By T Ml

    Thank you for the video. But I still want learn how to ride a motorcycle such as the manual Honda Super Cub 50 without clutch lever (understandably instead using Centrifugal Clutch). Regards.


    at low speeds shoes will not be in contact with outer housing,then how is power transmitted in that case to wheels??

  21. Post By Tree Perry

    once again! you've helped explain it in a very simple way! Thanks!

  22. Post By ram reddy

    What happens if there is no clutch and if directly engine is connected to driven shaft

  23. Post By Shariff G

    video is blurry and cant see the board that good

  24. Post By veeresh sangolli

    Can this be used for bigger CC bikes?

  25. Post By colesthelol

    Isn't the Honda Supercub an application of this?

  26. Post By Ahmed Nasef


  27. Post By Ahmed Nasef

    Hey I have a question I have made a go kart on my own and used a gasoline 13 hp engine and a centrifugal clutch , chain and a sprocket on the shaft carrying the rear wheel just like that drawn on ur boardThe system works fine except for 1 thingWhen the car is at rest and I fire the engine it doesnt go that powerful it just never lose traction because the clutch slips so power is lost to friction even if I floor the gas pedal the wheel never spins the car just keeps accelerating at a very slow rate till it reach the max speed however the clutch I used is rated at 13hp so it should grip and give me that push of the start lineI have seen go karts that drift and smoke tyres on youtube with smaller engines than mine so ?????

  28. Post By MrHighpressure

    could you do a  torque converter video [minibike type]

  29. Post By Stijn Peeters

    Wow thanks man i have learned so much from all your videos pleas keep making them! P.S: Can you maybe make a video about how motorcycle clutches an gearboxes work? Thanks alot!

  30. Post By Amaan Fazeer

    I have a small question not related to this particular video.What is the engine timing belt and what is its purpose?is it related to inconsistent engine idle?

  31. Post By papalevies

    How do you disengage the clutch to switch gears?

  32. Post By tirimut

    Isn't there a certain RPM interval where the springs are stretched enough so the friction pads contact, but not actually transfer power effectively to the housing? I imagine it's similar to riding a conventional clutch. This can't be good for clutch wear. So these clutches are good for engines that are either sitting at idle or just getting the nuts revved out of them and nothing in between, right?

  33. Post By Sabarno Majumdar

    so how does the disengaging and engaging process of this clutch happen

  34. Post By ABHI JITH

    this is great i use them on my RC Nitro cars . But how does it work on the kawasaki H2 . please make a video on how the supercharger and a Slipperl clutch works on a kawasaki H2 . thanks :)

  35. Post By Stefan Ovcharov

    Great. So that's actually why people call those little-engine powered vehicles automatic? They use a clutch that engages and disengages automatically, depending on the RPM. Is that so?

  36. Post By Rokas Getautas

    Hello +Engineering Explained, I just got a random question that popped into my head. Would it be possible to use this type of clutch in a car? if yes would it have the ability to fully transfer the torque?

  37. Post By Eli Butterfield

    Hmmm…. I see alot of car videos here. >.>Maybe more motorcycle videos and then I'll subscribe x3Maybe FOR EXAMPLE, explaining a v-triple w sort of motorcycle engine, or the different types stroke engines (5 stroke and 6 stroke etc)I suck at explaining I know…. surry. -.-

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