That's actually one of the largest limiting factors to efficiency. It's called Pumping Loss. The parasitic drag on the engine from having to pump air in and out of relatively small valves and through restrictive intake and exhaust systems...the faster the engine is running the greater these losses and that's why power peaks then begins to fall as rpm increases on most engines.
@@Encryptus1 what are you driving? S2000? Or something cooler?! My 1.6L fiesta runs out of breath at around 5600 rpm. 9000 sounds exhilarating and terrifying.
@@rich7787 lots of v8's can reach far above their recommand rpm. it just that they need better coolering they use more gas produce more co2 like some 300hp engine scan produce 600 if tuned correctly and some 600hp can produce over 1000hp, its just we limit them to keep them safe as well to keep fuel usage and co2 down.
Crazy thing is the piston itself is constantly accelerating, decelerating,stops, then back to accelerating. It does this at every rpm. The forces are truly wild
Nah you’re anxious cuz you yourself can’t handle this roughness of piston cycles, the engine can cuz it has oil lubricating everything. In fact the redline isn’t that dangerous, your engine won’t blow immediately after revving past the redline. There is probably also a rev limiter before the rev limit and behind the redline.
Another factor of piston speed is the stroke. Piston speed is a combination of crank rpm and the diameter of the circle made by the con rod lower pin. The larger the pin circle, the faster piston speed at mid stroke and higher leverage. Bigger pin circles limit rpm while increasing leverage at the crank pin, ie, higher torque Thats why larger bore:stroke can run higher rpm while larger stroke:bore can give higher torque, relatively speaking.
@@billshiff2060 I am in the UK, it was a 750cc side valve Reliant Regal. A 3 wheel van that could be driven on a motorcycle licence. You are probably about right on the date, certainly 50s.
It amazes me that metal can move this fast for hindered of thousands of miles and don’t even get me started on diesel engines where some of them go up to a million miles. Truly amazing
The "slight" issue with this setup that it shows the rpm of the electric motor, and not the engine - because the pulley on the engine is way bigger than the one on the motor. A solution would be to use the same size pulley on the tachometer as on the engine, but by looking at the belt angle, we can see that this is not the case, it's way smaller. Tldr: the tachometer shows a much larger number than the original rpm of the engine.
Now I’m even more excited to see the power increase after I’ve spent the last month polishing/buffing the intake/exhaust ports. It should make an noticeable difference above 4K rpms now that there are no casting defects and roughness on the walls. Stock was like 80 grit sandpaper, now it’s like glass.
The glass finish will not help and likely will hurt. You can look it up. The flow velocity at the wall of any surface and any fluid such as air etc, is always 0. So there will be no improvement in flow except in cases where the roughness is very bad- lumps >.030" or so. To the air flow, an 80 grit is virtually the same as glass since either way the flow velocity is zero. If you have trouble believing that just put some water drops on your windshield and see how fast they move compared to the car speed. In addition, it's long been known that a glass smooth intake system loses power and a roughened surface aids in fuel vaporization. The exhaust can be as smooth as you like but it won't increase flow or power but some do it to try to keep carbon build up down.
@@billshiff2060 This is a pretty insightful comment, kinda goes to show how unintuitive things can be at times. You were describing "boundary layer" of a fluid right? The water on windshield analogy was great. Thanks for the info!
@@maryckbuilds Not quite the boundary layer but the interface between the fluid and the surface. The boundary layer is what results from the 0 flow at the interface and the stream velocity, causing a velocity gradient from 0 at the wall and increasing to full velocity some point away from the wall. The resulting velocity profile varies in thickness from thin at the entrance to half the diameter if the pipe is long enough. There is a lot to know about that little layer. 1 researcher told me that fluids remains stuck to the walls in his ultra high vacuum chamber and they have to bake it for a week to get rid of it before they can get to full vacuum. I understand even in space objects keep a layer of gas on the surface.
F1 engine pistons hardly move up and down actually because they have very large piston diameters and very short strokes. As an old pal used to say, they were like "vibrating dinner plates". This vastly reduces the mean piston speed (and piston acceleration) which reduces friction between the piston and cylinder. It also reduces the stresses on the crankshaft, connection rod and piston.
@@screwsnutsandbolts 20,000 rpm? For techno junkies, that's a feat achieved in 1967 - that's 55 years ago - by Suzuki’s RP68 three cylinder 50cc racer.
@@Bikerbuoy The problem is that such an engine has little to no power anywhere except at very high RPM. And of course they wear out very quickly despite using the finest materials and high tech lubricants.
Fine demos. I'm guessing you are a high school teacher. Possibly vocational or community college. Much work here unless someone is creating some of these. Helpful to visualize and compare what is happening. I've seen a battery operated hand drill motor roll a small car forward. I was thinking maybe a good place for a motor to be added or modified might be the starter motor. Much appreciated. Thank you.
I find strange it looked more lumpy at low rpm but once it got past 2 or 3k rpm it settled down very cool I would love to have a in side view when a v8 at max rpm let's go and eats it self
The engine at 1:52 was amazing I can't believe the piston 4 stroke is going that fast compared to the moter it doesn't even look like it's even moving!😮
Insertion of Air flow and fuel injection and burned mixtures letting go outside and valves opening and closing at same precise time to run the engine at such higher rotations per minute, and its all should happen within continuous fraction of seconds, its even hard to imagine and understand. Honestly We don't deserve such marvellous engineering 🙏👏👏
How did you keep it lubed? Nice job, I must have seen something like that when I was about two years old, I have been a motor head/ mechanic now for 50 years. It’s still super cool!
back in the day, steam locomotives had strict speed limits, seems that the various imbalances could actually cause the locomotives to lift off the rails, while this was just a small model, it was scary as hell, on the titanic, some of the survivors spoke of the "dance" of the ship when the engines were powered up to full steam.
It’s hard to believe after 125 years it’s still the basic technology that we have today. I really thought that the rotary engine would replace the internal combustion engine.
Rotary? As in Wankel Rotary engines as used in some NSU & Mazda vehicles? That is also an internal combustion engine. The engine in the video is a reciprocating piston engine.
I feel like that tach is off. I have spent a lot of time building engines and looking at them while they're taking apart and running. I would make sure that each revolution of the crank matches each revolution of the pulley on the back of that tach. I believe you will find that the tack is reading slower than the engine is actually spinning. You could also test this with a digital tach reader on the engine itself. That being said. This thing is pretty awesome. Good job
In a one cylinder 4 stroke engine the spark plug fires every time the piston reaches top dead center. Yours only fired on the power stroke. Very nice display, though!
I think the engine is moving slower than the rpm the tachometer indicates. It is observed that the pulley that goes from the electric motor to the motor is forming a reduction
Super vidéo On se demande comment les cycles à 4 temps ont le temps d'être complet. Il y a une inertie des gaz adm et échap assez relative. On multiplie tout ça par X cylindres, et cela devient presque de l'horlogerie.
I just want to tell those who delight in how fast the pistons turn in the car, that when the engine has, for example, 4 cylinders, it is a little different in the way the whole engine works, the piston actually zaps so fast but 3/4 of the upward movement is involuntary although lubricated but it is the 4th stroke that does the work. Overall, it is worth learning about the mechanism of the engine because it is very interesting and maybe someone will come up with a new engine
![PASULOL รามเกียรติ์ ตอนที่ 4 นนทกพบรัก [Ramakien Ep.4: Nonthok in love]](http://i.ytimg.com/vi/tMUQgmZzf_A/mqdefault.jpg)
Even if you don't understand the mechanics and operation of engines, let the video help you understand the importance of oil change.
People who drive with the low oil pressure light on: "nah the mechanic's trying to scam me my car is fine"
@@Fred_the_1996till the piston becomes dust and leaks all over the place
Now imagine the F1 engines from 2000 revving up to 19000 rpm.
I did it. I imagined it
@@ckchatta369 And?
@@Hitherto90 mind blow
@@trueno2336 I give people a lot of stick for how bad we are at modern society, but even I have to acknowledge innovation when I see it.
The Honda fire blade could do 20K
It doesn't even feel like the engine is spinning that fast in a car. Wow!
Carwow
🤦♂️
Ikr
Thanks to Insulation and 5ft distance.
You got 4, 6, or 8 of those in a car doing the same thing, but each piston has a different cycle.
Gives me a new appreciation for what engines do and how long they last!
Its hard to imagine air moving in and out that quickly
I could imagine~
just imagine a rotary in a idle sound.
That's actually one of the largest limiting factors to efficiency. It's called Pumping Loss. The parasitic drag on the engine from having to pump air in and out of relatively small valves and through restrictive intake and exhaust systems...the faster the engine is running the greater these losses and that's why power peaks then begins to fall as rpm increases on most engines.
Oxygen can move at 500m/s speed which is 1800km/h
@@lite5474 but Oxygen is only 19% of atmospheric air. It'd be more accurate to measure Nitrogen.
Its amazing that the piston can handle this speed even at 1000rpm
And how do they last without wearing out
@@mikejohnson5491 Lots of oil for lubrication and high tolerance parts
@@theodorechatzis7881 yeah but it's still amazing how long some motors last
@@mikejohnson5491 it indeed is my friend
@@mikejohnson5491 without lubrication they wouldn't last 2 minutes
Thats why engine oil is very important!Thanks for this video mate.Really understood how an engine works
Oil is just a fake story made up to sell more product.
It's fascinating to see how fast parts in an engine move !
EXTREMLY
@@TheMati1471 некоторые авиамодельные двигатели 2тактники могут выдавать до 30к оборотов
After 3000 rpm you can see the piston's own soul
amazing how fast the piston moves , thank you for posting , thumbs up
If you ever feel overwhelmed, remember that F1 drivers regularly switch gears at around 11800 rpm
Imagine with V8 about 18000rpm
My car does 9000 rpm redline 😂
@@Encryptus1 what are you driving? S2000? Or something cooler?! My 1.6L fiesta runs out of breath at around 5600 rpm. 9000 sounds exhilarating and terrifying.
@@rich7787 lots of v8's can reach far above their recommand rpm. it just that they need better coolering they use more gas produce more co2 like some 300hp engine scan produce 600 if tuned correctly and some 600hp can produce over 1000hp, its just we limit them to keep them safe as well to keep fuel usage and co2 down.
Just goes to show you how tough the engine components are.
Surprising, acheiving such a high RPM from a tacky metalurgy setup. Great job.
Crazy thing is the piston itself is constantly accelerating, decelerating,stops, then back to accelerating. It does this at every rpm. The forces are truly wild
Поршень меняет вектор, и меняется кинетичекская энергия на потенциальную....
Ok. I'll drive slow. Now i have some trust issues. 😂
😂😂
Just drive 30km/h in 5th gear.
Same after this video I need to apologise to my pulsar.
Nah you’re anxious cuz you yourself can’t handle this roughness of piston cycles, the engine can cuz it has oil lubricating everything. In fact the redline isn’t that dangerous, your engine won’t blow immediately after revving past the redline. There is probably also a rev limiter before the rev limit and behind the redline.
Exactly!😂 my anxiety level going📈📈📈
One of the most fascinating videos I've ever seen.
Another factor of piston speed is the stroke.
Piston speed is a combination of crank rpm and the diameter of the circle made by the con rod lower pin.
The larger the pin circle, the faster piston speed at mid stroke and higher leverage.
Bigger pin circles limit rpm while increasing leverage at the crank pin, ie, higher torque
Thats why larger bore:stroke can run higher rpm while larger stroke:bore can give higher torque, relatively speaking.
Fantastic demonstration. My first car had a similar motor 😁👍
My first Transportation was called a Doodle Bug, later to be called a Mini Bike closest Car would have been the VW.
You had a single cylinder flathead on your car?
@@Giuliana-w1f 4 cylinder side valve
@@GrandadIsAnOldMan 52 or earlier id guess. Jeep?
@@billshiff2060 I am in the UK, it was a 750cc side valve Reliant Regal. A 3 wheel van that could be driven on a motorcycle licence. You are probably about right on the date, certainly 50s.
Makes you appreciate your engine even more.
Internal Combustion Engines truly are one of the marvels of Engineering, and this video is a testament to that fact!
After watching this. I feel sorry to my car's engine. I'm not gonna use my car anymore.
Don't worry. It's made to handle that, as long as you keep changing the oil regularly.
A cool little engine.
Can you imagine how strong of the spring and piston ring!!
Thanks for the fix of the video sir, such an excellent machine to have for learning purpose.
I can’t believe they rev that fast! How in the heck does it all stay together
It puts into perspective just how amazing engines are as machines.
@@KLUB. 😂
That throttle plate is having fun
The intake butterfly valve has a mind of its own.
It amazes me that metal can move this fast for hindered of thousands of miles and don’t even get me started on diesel engines where some of them go up to a million miles. Truly amazing
I have Mack engines clocking 3+ million Ks without any internal engine repairs
Now I have an idea what my engine is doing especially when I get on the interstate. Glad mine has oil. Great job! 👍
This is magical, imagine withstanding this speed every single minute and not breaking.
Nice to see you using a t head engine as a demonstration, don't see them any more
Outstanding video, realistic cutaway with working components. Bravo.
The "slight" issue with this setup that it shows the rpm of the electric motor, and not the engine - because the pulley on the engine is way bigger than the one on the motor. A solution would be to use the same size pulley on the tachometer as on the engine, but by looking at the belt angle, we can see that this is not the case, it's way smaller. Tldr: the tachometer shows a much larger number than the original rpm of the engine.
How do you know this wasn't accounted for?
Now I’m even more excited to see the power increase after I’ve spent the last month polishing/buffing the intake/exhaust ports.
It should make an noticeable difference above 4K rpms now that there are no casting defects and roughness on the walls.
Stock was like 80 grit sandpaper, now it’s like glass.
How'd it go
The glass finish will not help and likely will hurt. You can look it up. The flow velocity at the wall of any surface and any fluid such as air etc, is always 0. So there will be no improvement in flow except in cases where the roughness is very bad- lumps >.030" or so. To the air flow, an 80 grit is virtually the same as glass since either way the flow velocity is zero. If you have trouble believing that just put some water drops on your windshield and see how fast they move compared to the car speed.
In addition, it's long been known that a glass smooth intake system loses power and a roughened surface aids in fuel vaporization. The exhaust can be as smooth as you like but it won't increase flow or power but some do it to try to keep carbon build up down.
@@billshiff2060 This is a pretty insightful comment, kinda goes to show how unintuitive things can be at times. You were describing "boundary layer" of a fluid right? The water on windshield analogy was great. Thanks for the info!
@@maryckbuilds My reply was taken down. I'll try again...
@@maryckbuilds Not quite the boundary layer but the interface between the fluid and the surface. The boundary layer is what results from the 0 flow at the interface and the stream velocity, causing a velocity gradient from 0 at the wall and increasing to full velocity some point away from the wall. The resulting velocity profile varies in thickness from thin at the entrance to half the diameter if the pipe is long enough.
There is a lot to know about that little layer. 1 researcher told me that fluids remains stuck to the walls in his ultra high vacuum chamber and they have to bake it for a week to get rid of it before they can get to full vacuum. I understand even in space objects keep a layer of gas on the surface.
The pulley for the tachometer is smaller than that of the engine, judging by the belt angles. So, the tach will show a higher RPM than the engine.
Yes no one noticed that.
finally found the comment, youre right
Imagine doing this for 200,000 miles. Gives you an appreciation for the design of the ICE.
I was looking for exactly this. It puts everything I know about engines into perspective
That's a great little cutaway demonstration engine!
The older Formula One V10 engines had ten of these pistons going up and down up to 20,000 times per minute. That's 333 times per SECOND ! 😮
F1 engine pistons hardly move up and down actually because they have very large piston diameters and very short strokes. As an old pal used to say, they were like "vibrating dinner plates". This vastly reduces the mean piston speed (and piston acceleration) which reduces friction between the piston and cylinder. It also reduces the stresses on the crankshaft, connection rod and piston.
@@Bikerbuoy Those dinner plates are still vibrating at up to 20,000 times per minute lol :)
@@screwsnutsandbolts 20,000 rpm? For techno junkies, that's a feat achieved in 1967 - that's 55 years ago - by Suzuki’s RP68 three cylinder 50cc racer.
@@Bikerbuoy The problem is that such an engine has little to no power anywhere except at very high RPM. And of course they wear out very quickly despite using the finest materials and high tech lubricants.
WOW!!! Just WOW!!! Watching this video is just so satisfying 😌 😊😮
Gretta T and friends probably gave you the thumbs down, they'll get over it. Great job Robert.
This is so beautiful.
VTEC kicks in at 3:50 (look at the throttle plate lol)
As far as I noticed at low crankshaft speeds, the tachometer shows the speed of rotation more than in reality.
GREAT model. Thank you!
Works like a realistic hearth beat
Seeing that butterfly valve just vibing out had me rolling 💀💀
My poor Audi engine, i drove 200 kmh with 6.5k rpm. It must have felt like hell for the metal
Fine demos. I'm guessing you are a high school teacher. Possibly vocational or community college. Much work here unless someone is creating some of these. Helpful to visualize and compare what is happening. I've seen a battery operated hand drill motor roll a small car forward. I was thinking maybe a good place for a motor to be added or modified might be the starter motor. Much appreciated. Thank you.
The starter will drive any vehicle with a standard transmission, pop the clutch and go...
INPRESIONANTE amigo ,no Avia visto nada igual en mi vida,me encanta tu motor
It's cool watching the moment it starts resonating
I find strange it looked more lumpy at low rpm but once it got past 2 or 3k rpm it settled down very cool I would love to have a in side view when a v8 at max rpm let's go and eats it self
Excelente ejemplo de como trabaja un piston dentro de un motor. Felicidades
I cant believe human made this thing goes so fast in one place
The engine at 1:52 was amazing I can't believe the piston 4 stroke is going that fast compared to the moter it doesn't even look like it's even moving!😮
That's a unique timing setup. The cam lobes are down near the crankshaft.
Insertion of Air flow and fuel injection and burned mixtures letting go outside and valves opening and closing at same precise time to run the engine at such higher rotations per minute, and its all should happen within continuous fraction of seconds, its even hard to imagine and understand.
Honestly We don't deserve such marvellous engineering 🙏👏👏
You can see that the engine is very delicate.
Now just imagine the f1 cars that rev up to 15k rpm
👍THUMBS UP + 🔔 🔔 🔔 Have a Fantastic Week!!!🌷🎶❤️Much Love❤️❤️❤️.Ivana
How did you keep it lubed?
Nice job, I must have seen something like that when I was about two years old, I have been a motor head/ mechanic now for 50 years.
It’s still super cool!
This little 4 stroke spins faster then my IQ level
This is a beautiful video
Interesting information and video. Thanks 👍.
back in the day, steam locomotives had strict speed limits, seems that the various imbalances could actually cause the locomotives to lift off the rails, while this was just a small model, it was scary as hell, on the titanic, some of the survivors spoke of the "dance" of the ship when the engines were powered up to full steam.
Super cool, I want this for my grandson.
Cool vid! Point a strobe light on it for the heck of it.
Exelente video
That fuel input is S🅱️innin’
This is the exact engine being used in the 2023 Silverado
It’s hard to believe after 125 years it’s still the basic technology that we have today. I really thought that the rotary engine would replace the internal combustion engine.
Rotary? As in Wankel Rotary engines as used in some NSU & Mazda vehicles? That is also an internal combustion engine. The engine in the video is a reciprocating piston engine.
no difference in term of ICE however, the wankel is not as good as reciprocating engine IMO
Fantastic demo
AMAZING ! great video
Хорошая модель! Спасибо.
I feel like that tach is off. I have spent a lot of time building engines and looking at them while they're taking apart and running. I would make sure that each revolution of the crank matches each revolution of the pulley on the back of that tach. I believe you will find that the tack is reading slower than the engine is actually spinning. You could also test this with a digital tach reader on the engine itself. That being said. This thing is pretty awesome. Good job
I had a 175 kaw I rode to work at ten grand for months and the day It was running the best the piston melted and a new piston made like brand new.
In a one cylinder 4 stroke engine the spark plug fires every time the piston reaches top dead center. Yours only fired on the power stroke. Very nice display, though!
What I liked was when the engine hit it's power band and just smoothed out and hummed
I think the engine is moving slower than the rpm the tachometer indicates. It is observed that the pulley that goes from the electric motor to the motor is forming a reduction
i still can't comprehend how the piston doesn't just... break lol
Excellent demonstration/representation. Now to really mess with your heads, look up ‘valve bounce’ then try to visualise it!
great model
exelente video muy buena demostración del funcionamiento del motor de combustión interna reciprocante
Very nice demonstration, thank you
Имитированая дроссельная заслонка на все 360 градусов крутится от вибрации)
Nunca entenderé como pueden aguantar tanto las piezas con tanto movimiento... Es increíble
Nobody:
Throttle valve : you spin me right 'round, baby, right 'round ...
At 1000 rpms the piston spins 10 times in a sec thats mind blowing
And this is why you should always use good quality engine oil and change it regularly
Good video 👍😊
That butterfly Valve is on something strong💀
Physics question: does it take more energy to rotate a reciprocating mass than an equivalent mass with no reciprocating components, ignoring fruction?
Very good 👍
It's crazy that engines don't break more often.😮
I'm telling my brain that: "it's not like fastforward edited video!"
Me staring at it: "I'm waiting for it to break".
Super vidéo
On se demande comment les cycles à 4 temps ont le temps d'être complet.
Il y a une inertie des gaz adm et échap assez relative.
On multiplie tout ça par X cylindres, et cela devient presque de l'horlogerie.
I just want to tell those who delight in how fast the pistons turn in the car, that when the engine has, for example, 4 cylinders, it is a little different in the way the whole engine works, the piston actually zaps so fast but 3/4 of the upward movement is involuntary although lubricated but it is the 4th stroke that does the work. Overall, it is worth learning about the mechanism of the engine because it is very interesting and maybe someone will come up with a new engine
grate video
is that clock denoting x1000 is rpm??
Yes, rpm
Explosions detonate and move on that fast??? Crazy
We are ideally approaching the time taken by the fuel for burning and time taken by electricity for lighting the sparkplug.