How Does A Small Engine Work? 2 & 4 Cycle

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In an 18 minute video, you served up more knowledge than a week of shop class ever would. If I were a shop teacher, this would be a must see video. SALUTE!

The unstated component of this sequence is INERTIA. When the spark plug detonates the fuel/air mixture, the explosive force is transferred to the flywheel, the piston rod counter balance, and the mower blade. So an explosion is converted to a rotational force that causes all mechanical devices to repeat the sequence. LISTEN: When you PULL the starter rope, YOU are providing the FIRST burst of energy that imparts rotational inertia to the flywheel, etc, to breath life into this brilliant sequence of events. And yes, the mass (weight) of the mower blade is designed into this process, which explains why mower engines do not run well, UNLESS they have a blade attached. Incredible mechanical ingenuity that is used so often, yet is so difficult to grasp in its entirety. THanks for THinking! Mr. Brown North Central Florida

Holy cow Blademan that was a all star lineup!

“I couldn’t find any 2 stroke engines” with 4 weed eaters hanging in the background 😆

I already know how engines work but I'm still watching because it's Taryl lol

"Keep replacing parts till it works " that perfectly describes my approach to life in general 😂. Great video, thanks!

The Carburators really are neat though - the way they are designed is really special. When Taryl says that it mixes the air with the fuel - it literally sucks the gas up from the float bowl though a really small opening that literally turns into really fine MIST once the air smashes against it. In slow motion it's like you'll be seeing some drops of fuel jump up as little blobs - and then the air slams through really quickly and it's like BOOM FINE MIST - and all that fine mist (gas vapor) gets immediately sucked into the engine to be exploded by the spark plug). You guys know how a potato gun works? How when you put the fuel in it's gotta be in a mist form to explode properly? People will sometimes use hair spray or some kind of MIST / spray type fuel? In order to get a proper explosion into the chamber the fuel has to be in mist form - and that's one of the HUGE functions of the carburetor. It turns that liquid fuel into a fine mist every time it sucks air in - and when it sucks air in it's like really short but powerful burst of air. There are a ton of videos on youtube that go into WAY small detail about this - and I think tech ingredients has one, as well as Mark Rober I am thinking he has one too? You guys should watch those - those videos really do open your eyes A LOT MORE about what EXACTLY that part really does and HOW it does it down to the smallest and yet simplest detail. Engineers like to call it: Putting the gas into a stochiometric mixture to the point where it is exploded most efficiently (to the point where after the explosion is done, all the gas is burnt up and there isn't any fuel left inside the chamber after the explosion). Meaning there has to be just the right amount of air combined with just the right amount of fuel to get that perfect mix - otherwise you're running to rich (too much fuel, or not enough air), or running to lean (too much air / not enough fuel), and since the carb really has a fixed amount of air that goes into it and that part of the mix (oxygen) is designed to never change just by the way the carb is physically shaped in it's internal structure - it's all really decided about how much fuel is going into it, that's the changing variable and it's designed to be that way - since that is what the screws control - the amount of fuel being sucked up into the chamber before it's turned into mist by the power suction when the air smacks into it. There's basically two suctions that occur in the carb... the first one brings the fuel up into the main carb chamber where they are just solid droplets of wet fuel, and then the second power suction hits which turns it into a super fine mist and brings it all into the engine to be exploded. It really is neat seeing it all happen in slow motion recorded from a super high FPS camera. The inside of the main carb chamber (for many of them at least) is shaped like a sideways hour glass, where at the center it's the most thin, and then they taper out to larger openings on the ends - which creates this powerful Jet like vacuum effect right where the gas droplets are being drawn in from the center.

When I was Young and Healthy I was like a new 4 Cycle engine I I had good Compression good Power and clean Exhaust Now that I am Old I have weak Compression lack of Power and bad smelly Exhaust

Been trying to understand a compression release for a while now and in 10 minutes you taught me how one operates. Been a subscriber for some time now and really enjoy your videos and the knowledge you impart to us all. Thank you

Great job guys on explaining all that! It's hard to believe that those intake and exhaust cycles on a 4-stroke engine are happening 25 times every second at 3000 RPM!!!! That seems amazing to me.

Thank you Mr. And thank you to all your friends. It's a excellent educational video.

Imagine this- in 50 years a descendant of Taryl will be doing a video on how a rechargeable electric motor works.

I think Slippers textbook descriptions for intake, compression, power, & exhaust was simply... " Suck -> Squeeze -> Bang -> Blow " _ Great video..!!!

Yo yo me old Mucker from the 🇬🇧 how an Engine works cool this is a video for me .. runs on magic..

I thought for sure Elkskins would be the Power stroke. "Fire it up!"

Nostalgic educational vibes, I love it! Super smart mann👌🏾

He such a AZUM teacher !!! GOD BLESS U

Thank you for making this easy to understand.

Your videos are great. Keep em coming