Hi dear Sir I have been watching you for quite some time and I'm always amazed. I'm a 47-year-old with with some engineering training over 20 years mechanical experience. your gift to the World, besides your genius, is your ability to think outside of the box please do not ever lose that.
+Warped Perception dude, yes!!! That'd be sick! In exchange for a humble shootout I would even make you an improved one. This one is actually kinda junk because I made a lot of mistakes on it. Email me: makerj101utube@gmail.com
Great video! If you take a look at 2:25, it really shows how the engine was running on the low idle jet, you can even see the fuel reclining down the high speed jet as it runs. Then when he gives it full throttle, the fuel rises up the high speed jet as the Venturi takes over! Again, great video!
That rubber tube is probably what's making the engine run so rough. If you replaced that with a ridged tube, and added a spring to the throttle, it will run pretty smooth. I noticed as it was running the tube kept collapsing.
Yes looks like a piece of bicycle inner tube, Definitely needs to make a an aluminum manifold so the vacuum pressure won't collapse the rubber. Crude design but it works.
super duper explanation on how idle circuit works at the end of the video, I haven't been able to grasp substantially how it works so far, now everything is clear to me, thanks a lot
This is exactly the explanation I was looking for!!! I hadn't been able to understand choke valve function and nobody was explaining it. Thanks a lot!T
+KaeiGuy don't worry, it's in the pipeline. I needed some content in between because I've hit some snags and it'll be about another week and I figured you guys wouldn't mind more content :)
Makerj101 yayyyyy, can't wait😁. I was thinking of the ignition, and why not use something from a weedeater? Because I'm building something similar, and I'm trying to think of ignition too😕
alos, since the fuel is pulled in from the air moving above the needle, where is it getting the airflow? is the engine pulling air through it nad that is what pulls the fuel through the needle?
Fantastic explanation of a carb. My kid started go karting last year and I found myself wanting to know more about how carbs work and potential options for tuning them. I've got to show this video to my kid.
+FireAndGasoline The only requirements are paying dues which are $50 per month and coming to one shop clean every quarter or doing other improvement/cleaning/fixing/etc at the shop. Members meetings and stuff like that are optional
That was actually a really understandable demonstration of how a carburetor works, and I definitely appreciate that you made it out of acrylic :) I've got a feeling that (tonight's gonna be a good nighhtttt) this carb will be attached to your homemade engine for 'testing' purposes. Can't wait for the update :)
Dude ..!!! this is amazing..!!! I haven`t seen a clear and simple explanation like this in a while/ and please can you make a video of how that air and fuel mixture distributed to combustion chambers after going through a carburator??/ a big THUMB UP for you in Advance
Try rotating your carb 90 degrees and drill your idle orifice where the butterfly valve opens at the bottom towards the motor. With the valve partially open the hole should be located directly underneath where the velocity will be the greatest. This should help with start up and should idle smoother. Great video !
Your slow motion at 3:06 to 3:10 is interesting in that it shows fuel from the main jet bouncing off the far wall of the venturi with every intake stroke.
Doc Brown as a boy haha! Start working on the flux capacitor as soon as possible? :D No matter what it's always great to see someone who's really into what they're doing!
Thanks for that video just what I needed I am wanting to make a classic looking carb for a vintage motorcycle you gave me some great ideas keep the videos coming
Gotta love seeing someone who paid for years of college finally get a taste of real world physics. Isn't it amazing that folks 100 years ago already figured out more than you will EVER acheive?
I watched alot of carb videos to try to exactly understand them. Thanks to this one, I have it down now, thanks. you the man 👊 now how do you make your own transmission gears (car grade) from scrap metal? 🙄
Very nice video! Congrats on building a see through carb. It shows how non-uniform the mixing of the air and fuel actually is. This is the main reason why there are huge cycle to cycle variations in the cylinder pressure on the carburetor engines - one cycle gets rich mixture while the next cycle gets lean mixture. Overall, all the cycles get poorly mixed the air with the fuel. Much better combustion is possible with gaseous fuel like natural gas or propane. This is the main reason why green gas gases (CO2) from gaseous fuels are considerably lower than on the gasoline engines. Well done!
Amazing work! Idle mixture seems ok, but at 2:53 you can clearly see that the main jet is delivering too much fuel, causing the engine to run too rich. When you close the throttle it's almost speeding up a bit. Nevertheless a great model!
Bernoulli's principle makes a LOT of sense once you go beyond the gross oversimplification you've been fed. The "pressure" you refer to is *static pressure* . In order to make sense of this, you need to also be aware of *dynamic pressure* and *total pressure* . Bernoulli's principle is an expression of the fact that total pressure in the free stream does NOT change as flow speed changes, as long as compressibility effects do not apply. It is a very simple definition - static pressure + dynamic pressure = total pressure. Additionally, we ought to define static and dynamic pressure - static pressure is simply what the barometer shows when it is not subjected to gas flow. Dynamic pressure is fluid pressure given rise to by the fluid's motion. It is a representation of the kinetic energy in the fluid and is proportional to the square of its velocity. It is zero when there is no flow. Going back to our definitions - as speed increases, so will dynamic pressure. In order to satisfy the Bernoulli condition - keeping total pressure constant, static pressure must reduce by as much as dynamic pressure increases. For low speed (incompressible) flows, this is the dominant pressure phenomenon.
Great job on the clear carb. I really liked the quarter too.When starting you can use a drill like Project Farm does in his experiments.Come to think of it you guys should look into doing a collaboration.
Hey, I was wondering, how did you knew that that was the right, or enough, amount of mixture? Or, did you calculated the air to fuel ratio that is flowing into the cilinder? Like, how did you get the right size of the venturi?
When the butterfly valve is closed, where does the vacuum come from that pulls gas thru the idle jet? Oh I see there is just enough air coming by the valve that pulls a little fuel up through the idle jet
way gul there is supposed to be a couple small holes in the butterfly, or he had it set to where it could never fully close. But the vacuum is caused by the Piston going up and down. But with out those holes, it would just choke it out .
Some question i have, does the butterfly valve position matter relative to where the venturi is, i mean, Does it matter if it was placed before or after? Is there a reason behind why you put it behind the venturi?
Nice... Now make a transparent-acrylic progressive 4-barrel carb, or a Weber downdraft-style multi-carb setup. Either would be a helluva showpiece at the local cruise scene.
What was the compressor from that you used in your compressor to internal combustion engine project? I got one from a mini fridge but I think it might be to small😭.
+ironGAMER36 yeah, mini fridge would be way too small. A window AC unit or dehumidifier should be big enough. I got mine from a condenser unit just like this: goo.gl/images/W2wptG
Makerj101 thanks I will head back to the dump and see what I can find... I will still try with the mini fridge compressor just because I already cut it open.
Congrats on being featured on Smarter Everyday.
Smarteveryday got me here👍
Hi dear Sir I have been watching you for quite some time and I'm always amazed.
I'm a 47-year-old with with some engineering training over 20 years mechanical experience. your gift to the World, besides your genius, is your ability to think outside of the box please do not ever lose that.
Can I mount this on my next see-through Engine episode? It's going to be nitromethane.
+Warped Perception dude, yes!!! That'd be sick! In exchange for a humble shootout I would even make you an improved one. This one is actually kinda junk because I made a lot of mistakes on it. Email me: makerj101utube@gmail.com
I really want to see this happen!!!!
One of you guys need to make a see through side cove for a horizontal shaft 3 horse. ThT would be fun to watch
Best ever explanation of how a carburetor works. And thank you for all your hard work. And for taking the time to make this video and share it .
Great video! If you take a look at 2:25, it really shows how the engine was running on the low idle jet, you can even see the fuel reclining down the high speed jet as it runs. Then when he gives it full throttle, the fuel rises up the high speed jet as the Venturi takes over! Again, great video!
Your personality in these videos make me happy☺☺☺
Adjustable hammer. Love it.
Also props on the build. Great video and great work.
+Joel Sullivan hehe I love metric adjustable hammers!! 😂 thank you!
That rubber tube is probably what's making the engine run so rough. If you replaced that with a ridged tube, and added a spring to the throttle, it will run pretty smooth. I noticed as it was running the tube kept collapsing.
Travis Piper I did as well
That too.
Yes looks like a piece of bicycle inner tube, Definitely needs to make a an aluminum manifold so the vacuum pressure won't collapse the rubber. Crude design but it works.
Also the jets probably need some tuning, but yeah that spacer probably doesn't help
I wondered about this, but do not know enough about it to comment!
super duper explanation on how idle circuit works at the end of the video, I haven't been able to grasp substantially how it works so far, now everything is clear to me, thanks a lot
Love how you used a quarter as the butterfly valve 😂
+Matt Paff I try using coins for washers and random things just for the fun of it haha
Makerj101 might as well! I wonder if you were to use an older, softer coin if it could be used as a gasket for something.
+Matt Paff sure!I don't see why not. I'd anneal it first which would soften it a lot too
Makerj101 I’d love to see you try something like that!
+Matt Paff I'll keep it in mind!
I can honestly say that was explained very well... Great video!
That was another fantastic demonstration. Keep it up bro!
This is exactly the explanation I was looking for!!! I hadn't been able to understand choke valve function and nobody was explaining it. Thanks a lot!T
What happened to part 7 of the internal combustion engine from a fridge compressor😥
+KaeiGuy don't worry, it's in the pipeline. I needed some content in between because I've hit some snags and it'll be about another week and I figured you guys wouldn't mind more content :)
Makerj101 yayyyyy, can't wait😁. I was thinking of the ignition, and why not use something from a weedeater? Because I'm building something similar, and I'm trying to think of ignition too😕
so. part 7? it has been months, and im not rushing you or anything, but i would really like to see it :)
alos, since the fuel is pulled in from the air moving above the needle, where is it getting the airflow? is the engine pulling air through it nad that is what pulls the fuel through the needle?
@@Scotty-vs4lf it's called the venturi effect. When air moves through that constriction, it's pressure drops. The low pressure pulls the fuel up
Fantastic explanation of a carb. My kid started go karting last year and I found myself wanting to know more about how carbs work and potential options for tuning them. I've got to show this video to my kid.
Nice job on the carburetor! I especially love the quarter as a butterfly valve. The maker space is awesome, unfortunately im an hour away from it.
+FireAndGasoline haha thanks!! Dang, an hour is pretty far. Although there are some members that drive that far to come to our space.
Its not that i couldn't come that far, i wouldn't be able to do it enough to meet requirements for being a member. Maybe we can do a collab one day.
+FireAndGasoline The only requirements are paying dues which are $50 per month and coming to one shop clean every quarter or doing other improvement/cleaning/fixing/etc at the shop. Members meetings and stuff like that are optional
Hey, I'd consider that lucky. I'm 3 hours away. lol
maker space is yuppie drivel ~
Two bit throttle assembly, love it.
Thanks for sharing.
Less... is more...
Smartereveryday got me here. Nice. Can’t wait for a lathe myself.
That was actually a really understandable demonstration of how a carburetor works, and I definitely appreciate that you made it out of acrylic :)
I've got a feeling that (tonight's gonna be a good nighhtttt) this carb will be attached to your homemade engine for 'testing' purposes. Can't wait for the update :)
Great video. This guy is different in a good way. I could see him blowing up on youtube
Or just blowing up hahaha
TH-cam blowing up? That's Colin Furze :Y
The Nocturnal Alchemist i know his brothers
You are very educational and entertaining too. I'm a small engine tech and I did find your video very accurate.
one of the most interesting things I have seen on TH-cam. Please keep making videos they're so cool.
Awesome explanation! Had trouble conceptualizing how the carb works but that example with the water cup really helped me understand functionality.
7:18 "This is a proportionality!" Not sure why but the way you said that made me lol.
Dude ..!!! this is amazing..!!! I haven`t seen a clear and simple explanation like this in a while/ and please can you make a video of how that air and fuel mixture distributed to combustion chambers after going through a carburator??/ a big THUMB UP for you in Advance
Try rotating your carb 90 degrees and drill your idle orifice where the butterfly valve opens at the bottom towards the motor. With the valve partially open the hole should be located directly underneath where the velocity will be the greatest. This should help with start up and should idle smoother. Great video !
Your slow motion at 3:06 to 3:10 is interesting in that it shows fuel from the main jet bouncing off the far wall of the venturi with every intake stroke.
The valve that controls the flow of air and fuel mixture is a quarter!! Awesome!!
Doc Brown as a boy haha! Start working on the flux capacitor as soon as possible? :D
No matter what it's always great to see someone who's really into what they're doing!
Great video. I've heard the function of a carburetor explained befor but now I really understand it. Thanks
Thats also how airbrushes work. You know the pencil things that you can paint with?
You made it so simple for me to understand. Thanks mate
Great instructional video. Tinkering is fun and educational.
Nice job on that carbi and a good explanation on how it works big thumbs up mate
Thanks for that video just what I needed I am wanting to make a classic looking carb for a vintage motorcycle you gave me some great ideas keep the videos coming
Gotta love seeing someone who paid for years of college finally get a taste of real world physics.
Isn't it amazing that folks 100 years ago already figured out more than you will EVER acheive?
Great job! I noticed your rubber intake boot was clasping under vacuum. Try changing it to a wire core hose or hard pipe and see if that helps.
Whoa nice video. You did great in explaining how carburetor works. With those principles you said. Simply amazing.😍
This was great from start to finish
Awesome presentation, thanks.
I like this new style of presentation XD
Excellent video. Great explanation. Really is.
Good job bud. Going to use this for my turbo project to supply the necessary fuel under boost
very nice job, sorry for the late comment I have been a very busy person, also new videos up and I have a really cool project coming up.
Nicely done!
that was awesome!!!! thank you young genius!
I watched alot of carb videos to try to exactly understand them. Thanks to this one, I have it down now, thanks. you the man 👊
now how do you make your own transmission gears (car grade) from scrap metal? 🙄
with a shaper and a turntable ~ or a mill
All you need is a forge and a hobber :D
I really appreciate this. thank you!
Great video and explanation. Thanks chief
i know them in and out but its a great vid to see the real time workings, good job brother boi, comin at ya from aussie!
Very nice video! Congrats on building a see through carb. It shows how non-uniform the mixing of the air and fuel actually is. This is the main reason why there are huge cycle to cycle variations in the cylinder pressure on the carburetor engines - one cycle gets rich mixture while the next cycle gets lean mixture. Overall, all the cycles get poorly mixed the air with the fuel. Much better combustion is possible with gaseous fuel like natural gas or propane. This is the main reason why green gas gases (CO2) from gaseous fuels are considerably lower than on the gasoline engines. Well done!
Or what, great video, funny guy makes me smile. I agree, make the rubber tube more ridged and get a spring on the throttle.
Amazing work! Idle mixture seems ok, but at 2:53 you can clearly see that the main jet is delivering too much fuel, causing the engine to run too rich. When you close the throttle it's almost speeding up a bit. Nevertheless a great model!
Great information dude 🙏🙏👍
Nice carb. Had a similar idea of making a see though intake or intake spacer for something like a opposed twin briggs just to see the atomized fuel.
Can you add a "static mixer" after the carburetor?
i really enjoyed that slow motion
Bernoulli's principle makes a LOT of sense once you go beyond the gross oversimplification you've been fed.
The "pressure" you refer to is *static pressure* . In order to make sense of this, you need to also be aware of *dynamic pressure* and *total pressure* . Bernoulli's principle is an expression of the fact that total pressure in the free stream does NOT change as flow speed changes, as long as compressibility effects do not apply.
It is a very simple definition - static pressure + dynamic pressure = total pressure.
Additionally, we ought to define static and dynamic pressure - static pressure is simply what the barometer shows when it is not subjected to gas flow. Dynamic pressure is fluid pressure given rise to by the fluid's motion. It is a representation of the kinetic energy in the fluid and is proportional to the square of its velocity. It is zero when there is no flow.
Going back to our definitions - as speed increases, so will dynamic pressure. In order to satisfy the Bernoulli condition - keeping total pressure constant, static pressure must reduce by as much as dynamic pressure increases.
For low speed (incompressible) flows, this is the dominant pressure phenomenon.
Very excellent work!
Always wondered how it works that's genius
10 Thumbs up. Well done!
Excellent explanation.
Great video. Is your glass carburetor for sale. I would be interested just as a educational tool. Thanks, Don
Could you please demonstrate with 2 fuel sources of contrasting colors to the 2 jets?
Great job on the clear carb. I really liked the quarter too.When starting you can use a drill like Project Farm does in his experiments.Come to think of it you guys should look into doing a collaboration.
Wicked dude !!!
Now.. It's time to crank out a glass G3 with a flag style governor for the old Victa Mark III 70 Series YEEEEW !!!
Best description, I've seen of how a carburetor works! Nice! I wonder if a carburated engine could run in zero gravity? Over thinking LOL.
Toby Whitaker Well a carburettor works due to air pressure, so it’s definitely possible to use one in a zero gravity situation.
So awesome good sir! Well done and great video! Subsribed
Nice work, congratz.
This video was excellent!!!
Nice demo tool!
Your awesome man you remind me of Bill Nye the Science guy
Thats cool u actually see the turbulent micro bubbles go back to the low pressure zone at the throat of the venturi when u close the butterfly valve
Hey, I was wondering, how did you knew that that was the right, or enough, amount of mixture? Or, did you calculated the air to fuel ratio that is flowing into the cilinder? Like, how did you get the right size of the venturi?
engine sound.
I would love to try see you make a transmission for that engine, for a gokart.
Great video!
I think this principle would be perfect for building and oil burner for a furnace, any thoughts?
+HV Labs yeah! I think it'd work well. I think the Doble Steam Car using a venturi type carburetor for its burner
Thank you
When the butterfly valve is closed, where does the vacuum come from that pulls gas thru the idle jet? Oh I see there is just enough air coming by the valve that pulls a little fuel up through the idle jet
+way gul the vacuum is caused by the piston going down and trying to pull air into the cylinder.
way gul there is supposed to be a couple small holes in the butterfly, or he had it set to where it could never fully close. But the vacuum is caused by the Piston going up and down. But with out those holes, it would just choke it out .
Nice job. Ty man!
Fun video. Good stuff.
Some question i have, does the butterfly valve position matter relative to where the venturi is, i mean, Does it matter if it was placed before or after?
Is there a reason behind why you put it behind the venturi?
Nice... Now make a transparent-acrylic progressive 4-barrel carb, or a Weber downdraft-style multi-carb setup. Either would be a helluva showpiece at the local cruise scene.
That's awesome!
Cool work
What was the compressor from that you used in your compressor to internal combustion engine project? I got one from a mini fridge but I think it might be to small😭.
+ironGAMER36 yeah, mini fridge would be way too small. A window AC unit or dehumidifier should be big enough. I got mine from a condenser unit just like this: goo.gl/images/W2wptG
Makerj101 thanks I will head back to the dump and see what I can find... I will still try with the mini fridge compressor just because I already cut it open.
Would this be possible with a glass hourglass?
Lightning Lochy no it's too thin
This was a great video
You need to get in touch with the guy off of project farm!!!!!!
Nice Job!
nice work
Wonderful
Cool video man!
I learned more in this video than I did studying 4 years of Accounting at Penn State lol Don't go to college kids
Awesome video.
man you're great
i love him so much
Hey buddy pressure is inversely proportional to the velocity of the fluid
ZAMIN'S WORLD Which pressure?
Buddy the pressure due the fast changing mass
What the fuck are you talking about?
Wouldnt pressure and velocity be inversely proportional because you said they are proportional.
Tanks man