Відео

This video is gold

How does the inlet gas reach the cylinder? Via 2-stroke like scavenge ports?

they actually did make a six cylinder at one point... with the peculiar firing order one expects... as did lamplough but he chose scavenged two stroke over fourstroke...

Just brilliant engineering. My goodness ... like what was that design discussions going on when such things are being conceptuelised !!!

High maintenance ,but did the job

is a dual or 3 bank of 5-9 cylinders possible making one out of vw parts? custom rods, crank, and case of course if such doesnt already exist.

Comment ont ils fait pour équilibrer le tout ? Tous ces cylindres en rotation, ça s'équilibre simplement avec la l'inertie du moteur ?

World War I pilots inhaled and swallowed a considerable amount of castor oil during flight, leading to persistent diarrhea. Perhaps this is why WWI pilot uniforms were brown.

Still using castor oil? I wonder if regular 2 cycle oil would work, like in marine outboard motors?

that 200lbs of rotating mass and it slinging oil out must have been horrible in an open cockpit 1200lb plane

i wouldnt enjoy that hunk of metal spinning so fast. impressive regardless. and here i am unable to fix my 125cc chinese scooter engine lol

just stack two of them, gear them oppositely, give them own prop, doubling the HP and eliminating the precession issue. ...no one has the balls to try this????????????

I am having a hard time understanding this, can someone help me understand?

WOW! Thanks for explaining.

I want to know ho the made the machinery they used to make the fantastic engines back in the early 1900's.

I know this engine tech was short lived, but at some point did they find a way to control engine power? As many on this noted, it either full power or idle

Fascinating... mind blowing engineering really. Especially for 100 years ago

Monosoupape literally means one valve. So that explains part of the engine. But I think it also had a butterfly/reed valve, in top of each piston. So it would suck in fuel and air mixture through that butterfly valve in the the piston, and then the exhausts would be released through the single real valve in the top. Real valve, as in being controlled by the cam. But I might be wrong here. I have some vague recollection that the piston valve was not really needed, and it kept jamming, because of the stickiness of the castor oil used for lubrication. So the Monosoupape version, that is the single valve version, might be a later version that did away with the piston butterfly/reed valves. And used ports in the cylinder walls instead, like a two stroke engine. Which would make the name make sense, pointing out that we now only have one valve, the reliable one, and have gotten rid of the troublesome piston top valve. I'll have to google for this info some day in the future... 🙂

🟥 Fascinating engineering but it looks like a lot of reciprocating mass.

If you've ever been around world war 1 era rotary engined planes they sound weird when they come in for a landing. Remember there's no throttle so either it's on full power or it's off. The pilot will line up with the runway and turn off the engine. They loose speed and the pilot turns the engine back on to gain a little bit more power then cuts it off again. The prop windmills when the power is cut so restarting is easy. Eventually they land and the engine stays off.

I would love to see some diagrams of that fuel delivery system. I have a good mechanical mind and it feels like some 2 stroke elements going on here. Very interesting.

Who the hell puts music over this

I believe it was developed for the perpose of allowing long wait times on the field to await the signal to take off, without the problem of overheating.

That was a great explanation, I never realised how the carburation worked before.

This engine is a masterpiece, true rotary engine I think France used them on their Spads

nicely done! thx

Great video really enjoyed watching, what a interesting engine.

For those who don't understand terminology .... SLOW DOWN, and explain what the parts do in simple terms

What’s the point of the entire thing rotating?

Why waste the power produced by the engine in rotating the engine itself

Great video; very informative.

what about the internal crank and con rod arrangement?

So basically it’s a two-stroke, right? I think Bleriot’s 3 cylinder Anzani engine worked on the very same mechanical principle..

...top drawer post, good animator!...be well!..l

It's not a rotary. A wankel is a rotary. This is a rotational engine. I know my machine shop experience would mean nothing on the internet nowadays but please look it up. I know it's not that big of a deal but to me it's like when people say that the merlin engine gave the mustang it's great range. It's just not true. Or today's engines are so clean and efficient. It's just not true.

A four stroke using two stroke induction and transfer, with valve exhaust.

"Is that an engine or a flywheel?" "Yes."

Interesting, good demonstration

wouldn't all that rotating mass be like a a big gyroscope in the nose?

The gnome rotary; the best worst engine ever.

love to see the comparison with listed pros/cons next to the ww1 rotaries

Should design two banks, make it contra rotating.

So it has transfer ports but air flow reverses down the exhaust so it operates as a four stroke.

Flying is inherently dangerous. Add a wood framed fuselage and wings, add 30 gallons of fuel, add being shot at with .50 caliber machine guns, and top it off with this 100 HP motor. Then a life expectancy measured in weeks makes sense.

I’m not sure how true it is but I heard these rotary engines were made because early attempts at radial engines couldn’t keep the cylinders cool effectively enough so they made it so the entire engine rotated to create better air flow over the cylinders. Obviously this problem was solved due to the reemergence of static radial engines but I’ve never found what actually made them dissipate heat better.

I never knew the cylinders are what rotated on these things. That is just crazy, and impressive how they were able to come up with this well over 100 years ago. I also got a little giggle over both the fuel per hour as well as oil per hour use. I knew rotaries use oil, but having figured out how much per hour it used was needed for an aircraft.

Excellent discussion - thank you very much! Can't say how much I appreciate outfits like this building working replicas of such historic engines. So see, hear (and smell) one running a century after they ceased to be used is just amazing. Gotta hand it to the original designers - the Gnome and Rhone engines and their Oberusel clones powered important aircraft right through World War One.

Well….I learned nothing.

It's still a 4 stroke, isn't it?