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- เผยแพร่เมื่อ 20 พ.ค. 2024
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The average RPM range of our boring consumer cars, or heck, even our more performance fueled cars are sub 10,000 rpm. So how does F1 make an engine that revs to 20,000 RPM? And why would they want to? What does a higher revving engine mean for performance?
HERE IN MY GARAGE…
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"Isnt limited by physics, but rather by mother nature!" These are sentences that Start riots at technical universities
yeah that was a dumb sentence
You're not understanding the context. In that video they showed it would be more than possible to break the world land speed record if there was enough space, but there isn't enough space on the planet to break it. Thats why.
@@BunnyBUNGALO how is that not related to physics.... Literally anything could be attributed to physics,
@@jaykoerner It is, and in a way it's caused by physics, but physics would allow for more top speed if we had a long enough stretch of straight road. Still a bit of a silly thing to say, but it kinda makes sense.
Had the same feelings and thoughts.
"impossible to rev over 20,000 rpm"
that one Honda at 2am: watch me
Or rather, Listen to me
@@ericheng9790 you say that like we'd have a choice in the conversation
have anyone heard of a super bike that can reach 52,000rpm? its called the MTT Y2K.
it powered by a turbine from marine turbo technologies
it can also outrun a veyron in a drag race
F1 engine's stroke is just above 2 inches. 😏 I had a feeling we had a lot in common
3:18
Same
"I have a small dick" 😂 "LOSER!"
"I have a big dick" 😂 "LOSER!"
Well you don't drive F1 cars on streets and most of these females are made for the street.
I’m dying 😂
Bunta: "Be sure to rev it up to 11,000rpm
Don't lose."
Noticed you senpai
Takumi: what's a '86?
What color is your 86?
"its impossible to an engine to go over 20k rpms"
-My dads fiat engine when i used to miss shift at 120km/h
"No, it ain't"
☠️☠️
💰 💴 💵 shift
😂😂😂
As far as i remember, f1 engines used to run at almost 20k rpm...
@@oscardbg9654 think they were limited at about 18 000 rpm
"This week on money pit, we're gonna put koenigsegg's freevalve system on our miata!"
"super expensive"
The guy said he installed it on his Miata engine for less than the cost of a nice exhaust. Sounds pretty cheap to me for the installation of Free-valve technology.
Yess lmao
(For anyone wondering: th-cam.com/video/E9KJ_f7REGw/w-d-xo.html)
I feel like nobody remembers about Desmodromic valves. They are the literally unaffected by valve float as the opening AND closing are mechanically controlled! :D
Well they constrain the valve position by not only opening the valve by a cam, but also use a cam to close the valve in stead of a spring, thereby not allowing any valve float.
Only problem is that the load on the closing cam increases with RPM, while it reduces on the spring.
I don't think a Desmo could go as high as 20K
Also it turned out the valve float they tried to fix was not so much a problem of RPM, but more of valve spring oscillation. This is more easily fixed by using 2 or 3 smaller valve springs (with different resonant frequency's) in stead of 1 big spring.
Desmo valves are NOT the answer
I've watched a lot of donut videos and this one in particular is fantastic. The editing, knowledge, pacing, and actual interesting information was spot on. What a great video.
2 stroke: *HELO*
That moment when you’re standard 2stroke bike Revs to 14000rpn
The 02 ZX12R could hit 16k. 4 stoke 4 cylinder.
@@710Canada so not 20k
I seen two stroke bikes on a video revving up to 21.5k
@@cameronbitz9124 wow, aren't you gooder at maths... 14k isn't either. Or is it?
Mom: *money shifts my Miata*
Cylinder 4: “20k RPM? That’s easy!”
Air Force One: “Something just hit the tail of the plane....”
Hahaha cheeky
Lmao
Rodney!
Rotary: *Am I A JOKE TO YOU?!*
@@fbi3544 yes
I really like this style where you explain things in a serious manner without goofing around
This is a premium high school
Presentation. Top notch. Very informative. 💯
He forgot one big problem of high engine RPM ... lubrication !
Once the pistons exceed the speed that the oil film can hold itself together, the film "breaks", and then there's no lubrication.
Once you have metal-on-metal movement, friction rises drastically, producing insane amounts of heat.
And if it gets bad enough, it can fuse/weld the piston to the cylinder ! And then everything explodes !
exactly...I think above 600feet/min with hydrocarbon oils
@@waynewhite2314
Add another zero, and you're in the ballpark of most modern sports cars.
But yeah, new oils are better at high piston speeds. 😀
@@Grumpy_old_Boot yeah I think it feet per second...my bad
@@waynewhite2314
No problem, it's all good. 😀
Honda rc115 says hiii 👍
The valve: *floats around*
The piston: - Go back to your seat!
The valve: (taps piston) no
@@xjmg007 The piston: - I said, back to your seat, it seems your guide haven't taught you anything
@@nellyishtari engine block and cylinder head: Oui, wtf are you 2 doing?
Valve: I like your cut, G.
Piston: SMACK
Valve: EEEEEEEEEEEEEEEEEEEE
If you really think about it, it's almost like a game of chicken. Just repeated.
If I'm not mistaken, the 2.4L V-8 of F1 from 2006 to 2013 revved up to 22,000 rpm
Not only the V8s but also the V10 from the 2004 BAR Honda 006.
Honda RC115 reved up to 22.500rpm
Only reason why I watched the video was to see if he mentioned those F1 engines
Think Cosworth did it first
They never reved that high at a GP Event, the FIA got wind 22,000 RPM Honda engine with significant performance upgrades, a 19,500 rpm limit was enforced after pre-season, later reduced to 19,000 rpm because teams decided using beryllium was not a good idea but a bad idea.
Even though 20,000 is an arbitrary figure were not limited there, and there are plenty of engines that will scream well north of 25,000 rpm.
You’re videos teach me more than school and I appreciate you guys much love 🤍
2 strokes and rotaries :
*idle at 50k rpm, rev at infinity*
*laughs in Simson 2 stroke engine*
@FichDich InDemArsch Yeah but MZs also don‘t rev that high.
No valves so they rev as fast as you can put fuel and air in them
@@therandomman6647 sooo multiple inline turbos all with increasing boost and insanely large 1000 cc or bigger injectors?
@@therandomman6647 reedvalves and transfer ports, sir!
do you know nothing of expansion pressurisation exhaust gas valving?
those spannies stop unburnt fuel being sucked through at higher rpm causing over burn of the incoming charge, the reeds stop mixture being forced out via the carburettor, and the position and dimension of your piston's porting is your inlet valve and timing.
then there's powervalve solutions of various types..
lots of valves in twostrokes, more in fact, more diverse.. some a little more theoretical.. but not as barking mad as intersectional feminism.
ungineering mate.
Simple answer: combustion engines can only go a certain amount of vroom.
Good try
AKA overr 600 mph
L
haha combustion engine go brrrr (but only so much)
Thank you for verbalizing my pain so clearly.
Lots of good information here. Thank you
"...not limited by physics, but rather by mother nature."
Is there a difference?
Yes one is a fact the other is opinion...
@@wubalub2535 do you have an argument to advance? Or you're just trolling the internet spreading toxycity.
@@faustin289 trolling the internet spreading toxicity? Sacrebleu, mon Dieu! Nooo! Who would ever do such a thing? 😱
@@daszieher cdn?
cdn?
Basically, Jerry at the end: "your mom should have sw--"
Donut: "Cuuuut!"
Yeah, I don't know why they included that bit when they even didn't let him finish...
@@jeanm.9570 like the mom shouldn't have let the dad do
Wow ,that was sensational , I learnt shed loads , thanks mate
Great vid, learned a lot. Tnx!
Jerry: " uno, dos, tres"
TH-cam ads: "allow us to introduce ourselves"
Yes.
I'm sure they time the ads for things like that
Any time I get an ad like that I just think how about you fu*k off *clicks why this ad, don't see this ad again*
I’m dead
TH-camrs can decide where they put ads. Also, download TH-cam Vanced. I haven't seen an ad in months
Download TH-cam Vanced.
What i learned from this video is that actually the most limiting factor is money lmao
That would be the limiting factor to almost anything
that is by far the most accurate explanation
Yeah, we all need Konigsegg free valves in our engines. Simple!
@Enrique Rojo Jorge If you can't keep your data safe from 'em, might as well join 'em ;)
Yes money let f1 rev up there and the teams planned higher...damn regs!
Dude,The nitro engine in my track car (in thumbnail) runs @ a consistent 42,000 rpms and fits in the palm of your hand
Nitro Radio Control engines can rev all the way up to 50,000+ rpm!! You are right!! I have a Traxxas revo 3.3 and that bad boy peaks horsepower at around 30K. People need to be informed about these engines!!
@_. this is a direct quote from the guy in the video: "the fastest revving motor peaks at around 20,000 rpm" he didn't say anything about the size or type of engine, just that it is a "motor". by definition he's wrong lol
Sir, I assemble engines for a living, 15+years, and your presentation and explanation was excellent. Thank you
Good old CBR250RR revved over 20k. Loved that thing!
Or a lot Honda’s 60s and 70s race bikes
i'm pretty sure they redlined at 19,000 and only if they had their ECU adjusted or you bought one meant for the Australian market, all the models built for the Japanese market were restricted and peaked around 17,000
23000rpm. I had one. It was phenomenal.
@@darrengolladay9359 nope, cbr250rr's are 4 stroke..
Yes my dude one hell of a bike. Makes all the right sounds.
The RPM of Jerry’s heart during a Keeps ad is 100000000000
LMAO
Lol
That’s why he needs to donate to the Ronald Reagan medical center so he can have a healthy heart
I love the fact that this suggests that his heart is just like rotating in his chest lol
@@thomashanson6603 HAHAHAHA imagine a surgeon about to give him a transplant or something and they cut him open and just see his heart spinning OBSCENELY fast
Nice, actually learned a bit about how an engine works. Never been really interested in it much but that was neat.
Thank you again. Never stop learning.
okay so basically what you're telling me is that I need a rotary
They max at 20k rpm too 🙄
@@weekendwrench if a rotary were to hit 20,000 rpm the rotors would only see 6,666.67 RPM because the eccentric shaft is what is counted as a revolution from a rotary, the eccentric shaft spins at 3× the rate of the rotors
I was waiting on this reply as I was saying the same thing.
You would be hard pressed to do it. They wouldnt have to worry about the first 2 issues. But they would about the 3rd issue. You would spin faster then the fuel could be ignited. They already have a problem with having unspent fuel stock. Making them spin faster would only make it worse. You would more then likly just flood the engine at higher rpms.
A turbine engine would be the perfect rotary in this case.
An F1 car today: "I set a record in F1 cars for reving to 20,500 RPM"
A CBR250rr from 1990: "Hold my beer"
RC 166 : hey
RC149: Hey
Nitrp rc engine: hold ny beer
Williams FJ-33 as it's HP fan passes 45,000 RPM: "Was this supposed to be a competition?".
Mtt ysk; amaturs
In the section on valve float, I'm surprised yall didn't mention the system Ducati uses. Desmodromic valves have a thing like a rocker to open the valve, but no spring to close it. Instead there is another rocker looking thing that forces the valve closed, which is also run off of lobes on the camshaft.
True enough but today's valve spring technology allows the engine to rev just as high without the complex desmo system. Even Ducati is phasing it out.
Basing on this simple nice explanation....ive subscribed
Imagine having engine’s with pistons moving faster than the speed of sound
Wonder what the exhaust note would be lol
@@samantharondeau4580 it would be deafening for sure. Just imagine multiple Sonic booms in fast progression. You would hear the exhaust note for a second and then hear close to nothing the next
They do that allready
Edit
Im wrong i did some calculations and its moves about 10 m/s at 6000 rpm if you count in both directions its 20 m/s
And the speed of sound is
343 m/s 😆
Can't imagine this happening in a modern 2 or 4 stroke cylinder. There might be some gains from this new variable compression engines from a couple of companies, as the implementation reduced piston side load a bit. Still regarding piston engines though, I don't think it's near enough that an engine could surpass 24k rpm, as the con rod is the issue more than the pistons.
However there may be a few rotaries, ie the Atkinson rotary, that may surpass this 23000rpm barrier quite easily. As I recall though the Wankel rotary is no good for this purpose, but I did hear that people got pretty close to record rpms with 13b motors.
I also recall that the valve actually had little enough float that honda was using valve springs for it's first record setting f1 test engine. Ordinary valve springs.
When something breaks the sound barrier the affect it has the air around could cause more issues i dont if you've seen a jet or a bullet in slow mo breaking that barrier but I think that force could potentially shoot the piston down in the cylinder. I could be very wrong tho
"When the object reaches the speed of sound, air cannot readily move out of the way and a shock wave is formed. When the object is moving faster than sound, the resulting sounds travel behind the object, creating a sonic boom."
(www.school-for-champions.com)
So what were to happen if you created a sonic boom in a cylinder
That car in the beginning sounded like a little kid raging on COD.
Literally the essence of classic MW2 lobbies
Holy shit the accuracy 😂😂😂😭
Like I’m pretty sure all the donut media commenters recognize these same spam post lol
We all know your spam just stop 😂
Facts
1966 Honda RC166 motorcycle, as raced at the Isle of Man TT races by Mike Hailwood. 250 cc 6 cylinder with four valves per cylinder was run at up to 25,000 rpm on the bench and up to 20,000 on the track. Max power occurred around 18,000 rpm.
EXCELLENT VIDEO, THE BEST VIDEO SHOWING VALVE FLOAT
that one civic at 3am: is this a challenge?
Civic makes at least 1,000,000,000,000,00 RPM
@@thor6264 or make those ricers make a fartcan revving to 5000 rpm saying" its over 9000" like an idiot.
@@andy56duky I get the first guy's joke but yours doesn't make any sense. A k20 civic can rev to 8-9k pretty easily
“It isn’t physics is Mother Nature” goes on to discuss physics.
talking about the previous video on top speed, the problem wasn't physics, it was geography
Really weird and random physics
Yeah, it was a weak sauce intro.
HRC Honda, hold my beer.
Small capacity RC 2 stroke engines around 40K rpm
Physics studies nature, so is accurate.
The Cotez engine Instead of valves with springs it was an overhead cam design with rotating trap door with bushing seals.
It went hush hush and disappeared. I can’t find any on it anymore. It was based on a 302 Ford block.
Thanks, I just got the idea for my final year project
“You’re a trade-off. You’re parents traded off having a fun life for, ...” I feel attacked, but it’s too funny. Love you and the donut crew!
I love how it just cuts off before he digs deeper.
We demand 2 apologies, 1 for the insult, and one for an extremely tortured metaphor
Also the editor poking fun at him with subtitles
Rotaries: haha dorito go burrrrrrrrrr at all the rpm
Came to say the same LOL - I love my 82 GSL
better have a closet full of apex seals
I was wondering why it wasn’t mentioned🤔
@@aestheticswim3397 an entire room in a house just filled with apex seals. Can’t carry any cargo, all the space is taken up by spare apex seals
Rotaries still have the flame front issues....So even they are limited...(And before someone says it...I know. R/whoosh....I know its a joke).
“Impossible to rev over 20,000 rpm” runaway diesel: hold my beer
"no engine can rev over 20k"
Me: drives old rc car with engine that revs to 50k rpm.
Was looking for a comment about nitros
I was hoping to see a comment on rc nitro rc engines. I get that there is next to no mass compared to an automotive engine but it still is proof that it is possible
@@zachr5676 two stroke rather than four stroke aswell
"Make sure you rev it up to 11'000 rpm"
-Bunta Fujiwara
-Turn on Light's
-Tachometer : 12100 RPM
-Takumi : Oh Sh*t
*Sound files rage intensifies*
This show needs to be renamed to science garage
Edit: for those of you saying, “NO!! The show isn’t the same without Bart!” In my opinion Jeremiah is still entertaining and knows about the stuff he’s talking about. He talks about how cars relate to science, just like how science garage did. The show is a lot more like science garage than bumper to bumper. Early b2b episodes featured James, and even Nolan and Jeremiah reviewing super cool cars. This is a lot different from old b2b, and a lot more like science garage. Even this specific video they did a science experiment, again just like science garage.
Sounds familiar...I miss that guy.
@@cpscps2679 Whatever happened to him? I know he left because he had a kid, but he seems to have vanished off the face of the earth.
@@ultraguy8771 he’s on Instagram, @bidsbarto, and as far as I know, he’s left donut completely behind, not making any posts relating to them (again, as far as I know).
No. this dude looks like he knows nothing about whats hes talking about. Much unlike science garage.
You're way off dude!
The events I race at have a category called F100. Those lttle Go Karts go pretty quick!
You forgot Ducati desmodromic valves! I know bikes aren't the focus of this channel but it's another very interesting way of controlling valve float.
*valve floats*
Ducati: Hold my desmosedici.
I'm curious why he didn't mention Ducati during that segment
True for larger engines, I guess, but some bike engines go over 20,000RPM and nitro engines in model cars can get up around 50,000RPM. I had a 0.12 cubic inch Pico engine that revved to 35,000RPM and made 2.5HP.
For the non USA crowd, .12 cubic inch is around 2.0cc so it has more than 1hp per cc 😂
Thanks for the translation. 😊
Yes RC nitro engines have the highest hp/liter relative to their small CC in the world, beating all koeniggsegg models and F1 car engines, which is insane for a mechanical 2 cycle carbureted engine
Very well explained
very cool video, keep it up 👍🏻
"Isn't limited by physics, but rather by mother nature" - That's... That's literally the *same* thing
Nope, the problem was geography, not physics
I dont think a plant is physics...
@@carlosverdugo9684 Every aspect of nature boils down to physics.
What I THINK he meant "THINK", is how the fuel couldn't really catch up with the piston, so I mean yea it's a form of physics, but how rapidly do you think a gas could expand and ignite 🤔 maybe we need some new fuel? 2 Stokes don't use valves so problem 1 solved, but what's next? A super high pressure injector thatll help thrust a piston downward+ the fuel ignition? Idk we'll have to start making blue prints of the best possible design in engine motion
@@ulifehr5357 I think your talking about a wankel engine.... Fixes the majority of those a issues
I'm really surprised that Jeremiah, the motorcycle guy, didn't mention Ducati's desmodromic valve system
Glad I'm not the only one
Desmodromics for the win!
Or the old cbr250rr 4 cylinder bikes... 20k redline and for public roads!
yeah beat me to it. I'm here in Italy furiously gesticulating at my laptop. This is unacceptable
wait, didn't he mention that in a different video though?
Another system col mechanically closing valves is the Desmodromic one, mainly used on Ducatis. You have one cam to open the valves and another one to close them.
Hahaha nice vid brahv. Good snark between informative content. "You're a tradeoff" LOL
“You’re a trade off!” may be the best insult ever 🤣
I love the newer direction that B2B has taken. It’s a really good continuation of what Science Garage used to be. Thanks Donut (:
спасибо, вроде до всего этого можно было и додуматься, но концентрация инфы в одном ролике шикарная!
Hey Jerbear. Can you do a video on the Kõning 2 stroke methanol engine? We ran one of these on my dad's Pro Hydroplane for years. Really cool motors. The carburetors basically have two moving parts.We ran the 5 port. 13,500rpm sounds so angry😎 those Köning Brothers knew what they were doing back in the day
MC22 CBR250RR: 4 cyl 4 stroke, rev bouncing above 20K RPM daily since the early 90's and still going hard
My first thought.
My first bike 😍
You had it for how long??
yeah my workmate had a CBR 400 that went to 18 easy, while my FZR 400 only went to 15. We'd drag off the lights every day after work, good times.
17.8k actually tach was inaccurate cdi would only provide enough spark for that
"Turns out top car speed is not governed by physics but by mother nature" sooooo... physics
And that top speed keeps getting pushed higher every so often.
"waves at Thrust SSC"
Yeah, I always thought that physics described nature, but I guess Donuts describe nature.
That was just a dumb statement
Nice topic!
You are the most chilled out donut media guy
Dont mind me. Just impatiently waiting for this week's money pit
What happened to their schedule?
Rip
C’mon with the money pit!
No money pit this week or the next. They're on vacation.
90's japaneses 250cc sportbikes toping out at 19k rpm : "i am speed"
130W dremel maxing out at 33 000 rpm...it do be like that though.
I like this episode a lot you guys should read up on the Wayne Coool Rotary and see you what the max RPM of something like that would be
Man, Jeremiah is such a good teacher, love it
Y'all auto color correct got my boy looking like he's got on Coral #4💄🙏😂😂😂
Me: What it's over already?
TH-cam time bar: It's been 11 minutes
Me: Man, time flys.
Damn that would be so fun to drive. *Cries in b230*
One of the few times I _don't_ skip through an in-video ad and it actually ended up being useful to me?
"The piston, it could hit that valve - it's called crap day"
I was thinking he was gonna say a profesional name for this 😂
1/8 scale R/C car engines regularly turn 35-40k rpm. The really high end ones can sometimes reach 50-60k.
I think most of these are 2 stroke
Brilliant explanations - whats the view on Wankel Rotary Engines - do they overcome any of these issues
What about ducati's desmodromic? Doesn't that eliminate the valve problem? Greetings from germany, really good video as always 👍
Takumi: So I started revving anyway......
0:22 Of course I needed to hear that engine on MAX VOLUME!
That was fucking painful.
Pretty good little vid... I try to explain to people that in road racing 5 grams (the weight of a nickel) off of each reciprocating assembly is worth more than 100 pounds off the entire weight of the car. - less power to accelerate the actual reciprocating assembly is more power to accelerate the car.
My dad is a mechanic and I know nothing about engines, I'm a musician, however, I really enjoy your content guys, love u
Day 82 of wanting Up To Speed back
Virgin
We need up to speed
@@Didnt_ask69 lol!
to be honest i subscribed for up to speed and that big beared dude... I'll probably unsubscribe if it doesn't come back
@@Didnt_ask69 Virgin't
7:17 You forgot the desmodromic system, which basically opens and closes the valves mechanically. A system which Ducati stills using today
Still doesn't solve the reciprocating mass and flame speed problem. It's also more complicated and require more frequent and expensive maintenance, like every modern ducati did (except multistrada v4)
Came here to mention the desmodromic system as well
@@ardijanuar2036 I dunno man, correct me if It's just a dealership thing but a friend of mine nearly swapped his 1200gs for a Multistrada but backed down when he researched that the 40000 km service had a bill of around 2000usd.
@@ardijanuar2036 at least valve floating is solved 😂
I came here to say this, but then I remembered that desmo Ducati's don't rev past about 12k rpm anyway
I love high reving engines. Low end torque is great, but winding an engine out to its max and just taking in the sound and the feel is great. My dream car build would be a honda s2k with ITBs and and a valvetrain to make good power at 10k rpm. I know it would be impractical for street use and would need frequent rebuilds, but there's no replacement for that high reving character.
rotational valve feg solve vlave float factor 👌🏻 oil film is another issue which ripp of at certsin poston speed so need be improvements in this depesrtmenet + air fuel inertia can be also trouble in how fadt it can move into chamber .
Speaking on valves, there's also desmodromic valvetrains in which there is a seperate cam for opening and closing the valve, eliminating the need for a spring. Although they eliminate valve float in the traditional sense, they are more complex and more expensive.
I think some old Merc racing cars used them, and Ducati is known for their Desmo engines
I feel like you guys missed an entire section of piston engines that DO cycle consistently faster than 20,000 rpm. Nitro-Methane RC engines will spin at 30,000 rpm all day long and some will go higher than that into the 40,000 rpm range. Granted those engines use top fuel and also don't work if scaled up to actual car sizes, but they do exist. Obviously the valvetrain issue is solved by the engine being 2 stroke and the oscillating mass is taken care of by the high relative strength of the titanium they use combined with their low mass. It does leave me wondering how fast the flame propagation is using nitro-methanol if it can rev that high with no issues.
Small cc engine means small space the fuel needs to burn to the edge, lol
Thus the flame propagation in this case is on different level with a full size car, lol
you answered your own question, the problem there is scaling, the movement of the cylinders is linear, which would scale linearly, but volume and mass don't scale linearly. this is also why airplanes can't just be scaled up or down with the exact same design.
Regardless, every time I hear one of them or run my own ... Im always amazed the engine internals stay together at those speeds and last as long as they do ... its quite nutty.
The old 1.5 litter F1 engines use to spin like 22k before they started making rpm limits to lower power
@Hasi Mausi plenty? What like a 50cc motorcycle? Cause even the old high revving 250cc crotch rockets usually only turned 15-19k at most
Thanks for the info,,,,,,,,,,,,,,,,Ahhh I recall back in the 60's the physic buys said that the fastest theoretical speed a car could accelerate in 1/4 mile was 160 mph.
can you do the same for trans. and there limits auto, and manual and preselect (ei DTS) are effected by HP
the stresses shift create etc...
This channel has thought me so much, being as intrigued by anything mechanical as I am, this is my kind of channel and I watch a ton of these videos. When he said thank you so much for being a part of our family here at donut; we’re nearing 5 mill and I had never noticed that I wasn’t subscribed. I am now.
donut start drinking Nos: heartattack
donut start putting chemicals on head: They buy Yugo
The explanation got just a little dicey around the flame speed topic but good video. There was definitely some juggling of laminar (still environment) vs turbulent flame speeds, but the only correction that I'd make is that turbulence does (or at least typically does) dramatically increase flame speed and that quoted 10-80 m/s flame speed is definitely turbulent. Most laminar flame speeds are surprisingly slow. Like, you can walk faster, kinds of slow.
Well explained
0:42 flashbacks to 2017-2018 science garage
Me: *gets a youtube premium trial to skip all the ads*
Donut: Here's a 15 minute ad for mail pattern baldness.
At least the ads are quite entertaining
@@krisscrossapplesauce6636 true i rarely skip them because donut is hella creative lmao
Mail...
pololol.
I was just thinking the same thing
2:30 in 2 sec this guy taught me what 15 min videos couldn't
Great video, just a little note, I would change the title to piston engines. Gas turbines are also internal combustion engines and they can easily spin more than 20K rpm