2 STROKE vs 4 STROKE ENGINES – How it Works | SCIENCE GARAGE

2 STROKE vs 4 STROKE ENGINES – How it Works | SCIENCE GARAGE

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2 Stroke engines sound cool and make a lot of power with minimal weight. They cool off easy, and shoot motorbikes through the air like rockets. But how in the heck can you get air in, compress it, ignite it, and get it out with only two strokes? This episode of Science Garage gets into the mystery that is the 2 stroke engine!

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50 Comments

  1. Tuzla_ MA4 on February 1, 2021 at 7:51 pm

    "Twostrokes don´t last for long"
    My Twostroke TM 250 from the year 1989 in my backyard that still runs: "Man, fuck dem 4 strokes"

  2. Ineedmoney on February 1, 2021 at 7:53 pm

    I’m surprised we have found a way to make a lubricant for 2stroke engines that burn better than what we have now. With all the technology we have you’d think we could figure something out. I’m actually surprised there aren’t more kinds of engines of 2/4 stroke and Diesel and rotary engines though I’ve seen a few new forms of engines that people are working on.

  3. barnacle pete on February 1, 2021 at 7:53 pm

    Yeah. This guy is totally wrong about the 2 stroke reliability. The real reason you don’t see many 2 strokes these days is because of the EPA, the ruiners of car, truck, and motorcycle enthusiasts.

  4. Binary Astro on February 1, 2021 at 7:54 pm

    I don’t understand though, if two strokes combust twice as often as four strokes then why don’t they produce twice as much power?

  5. Anthony Adams on February 1, 2021 at 7:54 pm

    Hope 2 stroke will come back again 🤘🔥🔥🔥🔥

  6. LasVegas Maniac on February 1, 2021 at 7:56 pm

    I already know how both work. I just love these videos.

  7. Will Carpentieri on February 1, 2021 at 7:56 pm

    I miss this show

  8. Mathias Kling on February 1, 2021 at 7:58 pm

    Screw you Greta!! 2 stroke FTW!!!!

  9. YaMumsYaNan on February 1, 2021 at 7:58 pm

    I’ve learnt more in this series than I did during 13 years of school

  10. Alexander Walstad on February 1, 2021 at 8:00 pm

    how much exhaust do you breath in in a day also how many concussions have you had

  11. Loxo! on February 1, 2021 at 8:01 pm

    2 storke is best

  12. BleBBie on February 1, 2021 at 8:01 pm

    0:58 It doesn’t explode. Otherwise the engine would be broken.

  13. Bas den das on February 1, 2021 at 8:03 pm

    4 stroke is gwayyyy

  14. Premasis Deb on February 1, 2021 at 8:07 pm

    come to my house and see my dads 40 year old scooter with 2000000 km . And he never done anything to the engine

  15. CoaMLG on February 1, 2021 at 8:10 pm

    what is stronger 125cc 2 stroke or 250cc 4 stroke?

  16. Snorre Nickolay Linkjendal on February 1, 2021 at 8:13 pm

    My Suzuki GP100 1981 is still going after 40 years and only 9500km

  17. Mr Mura on February 1, 2021 at 8:14 pm

    "2 stroke engine don’t last long as 4 stroke engine"

    My grandfather’s 1964 tomos engine last till now, no engine rebuild needed

  18. Donut Media on February 1, 2021 at 8:14 pm

    GUYS! FRIENDS! NEW ENEMIES! Changed the thumb so you can see the exhaust on the bike on the left… PLEASE tell me I got it right!

  19. MajorasFlask on February 1, 2021 at 8:14 pm

    once you have 2 cylinders running 4 stroke then you get minimal power loss

  20. Deen Hameed on February 1, 2021 at 8:17 pm

    Sharks don’t use their fins to grip things dude… uhhh… they don’t have them fancy opposable thumb things. 🤦‍♂️ They use their teeth… hmmmm…

  21. aircraftnut15 on February 1, 2021 at 8:17 pm

    My dad has an 82 rd 350 2 stroke

    We went to the cottage and I rode shotgun in my friends copper coloured Audi

    My friend was following to close despite my warnings when we got to the cottage my friends car was a shade of blue

    If it ain’t smokin it’s broken

  22. gerald alforte on February 1, 2021 at 8:19 pm

    Today is Dec. 10,2020
    My personal experience additional today, in what is the difference 2 stroke ‘s 4 stroke engine?

  23. mojahed felemban on February 1, 2021 at 8:20 pm

    1 cycle 2 stroke vs 2 cycle 4 stroke.

  24. ang st on February 1, 2021 at 8:21 pm

    5 stroke engine is real fyi

  25. CDubsTV on February 1, 2021 at 8:21 pm

    4 stroke guys: wElL wE aRe MoRe FuEl EfFiCiEnT aNd LeSs PoLlUtInG

    2 stroke guys: I just want to have a good time

  26. moi même on February 1, 2021 at 8:24 pm

    Both are great

  27. Janey Parker on February 1, 2021 at 8:29 pm

    Mixing gas and slapping ass!

  28. Mtc4u 8BP on February 1, 2021 at 8:30 pm

    6:31 😂😂 that was so funny LOL

  29. Bread Scout on February 1, 2021 at 8:30 pm

    I love the throb of a 4 stroke but the riiing ting ting ting of a 2 stroke never gets old

  30. hondaman331 on February 1, 2021 at 8:33 pm

    Oil separates from gas and stays in the crank case for a good while on a 2 stroke. You were close

  31. Shaloom Brandon on February 1, 2021 at 8:33 pm

    Bring back bart

  32. Walking Bomb on February 1, 2021 at 8:35 pm

    0:30 is all you came for

  33. Matt Gore on February 1, 2021 at 8:38 pm

    Too bad they don’t make two stroke jet skis anymore

  34. Matt Gibbons on February 1, 2021 at 8:40 pm

    Thanks this helped me lots with understanding the differences between two strokes and four strokes and how they work

  35. b0r3d on February 1, 2021 at 8:40 pm

    aight, we’ve got automobile classes in a kitchen.

  36. andres marquez on February 1, 2021 at 8:43 pm

    Two stroke diesel? Thatd be fun

  37. João Sidônio on February 1, 2021 at 8:43 pm

    Why are 4 strokes water cooled? it has less combustion cycles, should make less heat? what am i missing?
    Why couldn’t you do HCCI on 2 stroke?

  38. DIY Channel on February 1, 2021 at 8:43 pm

    Hi everyone, I am looking for a diagram or an explanation of the 2 stroke engine that was used in motor bikes for racing. The engine has 1 or 2 exhaust valves that shut off to hold more in the compression stroke. This is different to the power valve. Thank you

  39. Seba on February 1, 2021 at 8:44 pm

    Give this guy a full TV show SERIOUSLY

  40. Francisco Illescas on February 1, 2021 at 8:45 pm

    Bring him back >:V

  41. label1877 on February 1, 2021 at 8:45 pm

    Real men only need two strokes.

  42. Oompa Loompa on February 1, 2021 at 8:45 pm

    I have a four stroke Kawasaki and I have started saving up for a Kawasaki kx85. So cool to see dirt bike videos on donut, keep doing them!

  43. Ravi Varman on February 1, 2021 at 8:45 pm

    Which stroke has high pickup

  44. Shahzad Mughal on February 1, 2021 at 8:46 pm

    I’ll prefer dual slynder 4 stroke over single 2 stroke.

  45. Sean Clement on February 1, 2021 at 8:46 pm

    I Bought a 2 stroke outboard motor from the 40s and it has four cylinders and only puts out 5 hrsprs

  46. Dark Laboratories on February 1, 2021 at 8:46 pm

    The thing is: the combustion in the 2 stroke engine doesnt push the piston completely down because the explosion escapes to the „out“ port. So the explosion in a 4 stroke is stronger ( because it cant escape ) but less often and in a 2 stroke it happens more offten BUT not that strong. So both are equally strong. Its just my opinion! No hate or fanboy sh*t

  47. Alastor〖Igris〗 on February 1, 2021 at 8:46 pm

    The way I subscribe and it sync the sound at 1:29 is just cool!

  48. ItalianHillbily Rooster on February 1, 2021 at 8:47 pm

    If you’re not mixing gas, you’re not getting ass! 4 strokes suck! ( Ronny Mac )

  49. lexi lex on February 1, 2021 at 8:48 pm

    All I need it 1 stroke

  50. Ryytlol on February 1, 2021 at 8:49 pm

    All 0f you saying 2 strokes are better are lifeless 2 stroke fanboys I bet none of you have driven a four stroke

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