See Thru Rotary Engine in Slow Motion – (Wankel Engine) 4K


Welcome back to Warped Perception. This is one of the most anticipated. And exciting episodes that we have filmed
to date. The see-through rotary engine. This Is episode 1 of the see-through rotary
series. The purpose of this episode. Is to introduce you to what. The Wankel rotary engine is. And show you how it works. Before moving on to the more complex rotary
designs. That I’m going to feature in upcoming episodes. If you don’t really know what the rotary engine
is. The Wankel rotary engine. Is most well known for being used. In the Mazda RX7. RX8. As well as a more Antiquated Mazda RX vehicles. It has quite a huge and dedicated following. Amongst many groups of Automotive enthusiasts
around the world. the Wankel rotary engine has also been used. In various aircraft And helicopter applications. Snowmobiles. Motorcycles. And all sorts of stuff. I brought in a friend of mine Alex. From the YouTube channel legit streetcars. To give us his Automotive opinion on the Rotary. Since he is neck-deep in the automotive world. And this is what he had to say. The rotary engine is an internal combustion
engine. Accomplishing the same task as a piston engine. But using a different process. The main difference between a rotary and a
piston engine. Is that the rotary engine doesn’t need to
convert the up and down. Reciprocating motion of the Pistons into a
rotational Force. The main advantage of the rotary engine. Is how much power it can make for its size. Take for example the latest Mazda RX-8. It was only a 1.3 liter. But it made 232 horsepower. And we’re not just talking displacement here. We are talking physical size of the engine. These engines are very small compared to a
typical four-cylinder. And this is how the engine looks that I’m
going to use for this episode. This is a Wankel rotary model aircraft engine. It’s really simple which is why I chose to
use it. And this is the engine with the front taken
apart so we can see inside. This is the simplest Wankel rotary engine
that I know of. This has no ignition. No cooling passages it’s air-cooled. But the principle Remains the Same. If we take a look at the components here we
can see that. There are two main moving components which
is the rotor. That triangular shape thing. And there is The Eccentric shaft. Which is the crankshaft equivalent in a piston
engine. Apart from that we have the rotor housing
right here. And in this case a glow plug. Carburetor and the exhaust Port right here. And if we spend this and the direction of
operation. It pulls the air-fuel mixture in through the
carburetor. Compresses it. It gets ignited. Then we have the power stroke Which pushes
that rotor. Then we have the exhaust stroke. Which is kind of combined with the power stroke. We can see there’s only a couple of moving
components inside this engine. In comparison to the piston engine. Where we have a piston. Valve’s. Crankshaft. Connecting rod. Camshaft, valve lifters, valve springs and
other moving parts. And there’s a couple more complex designs. But this is the one that I’m going to use
to show you the basic principle. Now first I’m going to start this up. To show you just how crazy this little engine
sounds. Now that you’ve seen the engine run on the
bench. It’s time for me to get to work and build
a functional. See Through Wankel rotary engine. Okay so this is where I’m at. I have my see-through rotary engine built
ready to start for the first time. So let’s get this thing started up so we can
see what the inside of a rotary engine looks like while it’s running. Wow that was super cool, I shut it off before
anything happened. Let’s take a look at the high-speed footage and see what is going on inside that combustion chamber. That was pretty cool but it was kind of hard
to see the combustion cycle. So for this next run I painted the propeller
nut and the bracket black. So we don’t have any distractions and hopefully
we can see it a little bit better. Now that looked pretty cool but it was kind
of hard to see the combustion process. So I’m going to run this engine again. But this time I’m going to lace the intake
air with pure acetylene gas. This should beautify the combustion process
and give us a really nice light show. The engine didn’t start here but. This is a good example of how the combustion
pressure. pushes that rotor and creates rotational Force. I could swear that happened in another see-through
Engine episode. I’m going to try it with the torch a little
bit closer and see what happens. I don’t think there’s engine is going to start
right up while injecting acetylene. I’m going to get it started on Nitro first. And then open the acetylene. I hope that I made that simple enough for
everybody to understand, but still entertaining enough for those who already know how it works. That concludes this episode of the see-through
rotary series. I thought that was pretty amazing that we
were able to see inside the rotary engine as it’s running. And I figured this was a great opportunity
to show everybody. Mainly how the combustion process works in
the Wankel rotary engine. That’s mainly what I was focused on here. And again This Is episode 1 of the series. I’m not going to tell you which rotary I’m
going to feature next. But make sure you subscribe so you get notified. So that’s about it let me know what you think
in the comments below. Are you still here?. Well if you got this far you’re all the way
at the end of the video. And I figured I would share a fun fact with
you. That last scene of the see-through rotary
burning acetylene. Took 226 takes. I literally just finished shooting that. My hands have blisters. From pulling this string over and over and
over again. I changed the string about 10 times. Finally I got it to start and I got the mixture
just perfect. And I guess that’s what you call dedication. Because I think it was worth it. Yeah I’ve never seen a see-through rotary
run before. And I’ve never seen a rotary burn acetylene. See you in the next episode. I can’t wait to do the next rotary episode. See you guys next time.

100 comments

Thanks for doing this! It's easy to see how combustion volume changes dramatically from very small to very large with that window.

Very interesting engine, there are lots of pros to it, but the one big downside has always been the rotor combustion seals at the tips of the rotor. They wear fairly rapidly and it is not uncommon for these engines to use a quart of oil in a thousand miles. I had 2 friends that owned R-X7 cars and it said that right in the owners manual. The cars ran good, but you had to keep an eye on the oil level all the time

dude, would it be easier to use a drill wtih a like a rubber cup or rubber hose attached, to press on the rotor shaft to spin the engine up?

Awesome visualisation! So what you can clearly see by the great effort of finally being able to look inside a Wankel engine is how inefficient the combustion chamber geometry is. Apart from all the sealing problems (apex seals and blow-by at the sides of the rotor) such a squashed, long and flat bubble of gas/air mixture will never be able to combust even halfway in a homogenous way.
So basically the Wankel engines fate is that of the 2-stroke engine…Unsolvable problems with gas separation and always burning oil. Somehow simple, light and a cool toy, but a dead end from the engineering perspective. You just can't afford to only use half of the fuel nowadays. Sad, but true.

I consciously never knew it but I've always wanted to see the inside workings of a rotary engine & this video was not at all disappointing & was very informative.

I should post this @mazda tritter, but how about a 2029 E Rotary. The "E" stands for (efficiency, E85 or Electric) for gas heads or tree huggers because you knkw we all love the Rotary. BUT NOT ELETRIC CARS

Pretty crappy engine design. It's basically a two stroke engine. It's very outdated. It still does what a piston does just by wobbling on the shaft pretty pointless engine.

this engine is running crazy rich, that's why it wont stay running after he takes off the glow ignitor, all the excess fuel is cooling the glow plug down to the point where i wont ignite the fuel

You should wear down one or more of the little nubs (I mow know they're called Apex Seals) that separate the spaces in the combustion to show how it malfunctions

Thank you for this video sensei. Really appreciate all the effort gone into making the viewer appreciate the beauty of this engine design.

The opening sound byte reminded me of the landscapers downtown, weedeaters, only the weedeaters sounded more manly 🤷‍♂️ . Awesome video. Thanks for putting in the work to bring this to us.

He has a gallon of monster nitro fuel that gas been discontinued for 10 years that gas must be hella old lol that's all I ran in my rc cars

1:15 i get that u had him talking infront of a cemra but why did u had to put it like 1 of those crime shows talking with victims with zoom in's and shit xD

cool but that engine's timing was trash terrible too much pre-ignition multiple times combustion was forcing the rotor in the opposite direction of rotation.

I want to buy one of these engines? I dont care if see through or not. just a small wankel engine please. Any help appreciated 🙂

Less moving parts yet still have to rebuild the engine every 50 k lmao what a crap… wonder why car manufacturers dont use wankel anymore hmm ?

This video also shows how wasteful model engines are with the fuel, … just look at it swashing around EVERYWHERE.
Could you design a better carb for it / them ???

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