BTS "How Does A Carburetor Work?" - Behind the Scenes Commentary | Smarter Every Day
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- Опубліковано 28 вер 2024
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Main Channel Video:
• How Does A Carburetor ...
Extended Cut with my Dad on the 2nd Channel
• Transparent Carburetor...
A pretty good video by Briggs & Stratton
• How Does a Carburetor ...
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Warm Regards,
Destin
I’d love to know what you think of this format. The idea is that after making certain videos I’ll do a livestream exclusively for Patreon Supporters. I’ll make sure to keep some of the discussion Patrons only, but after several days I’ll make an abbreviated cut of the stream live on the second channel. Thoughts?
P.S. Thank you to those who support on Patreon!
I like this! It's cool not to lock content only to patrons while still incentivizing people to join!
Python user here. We primary use python for data analysis. Pandas is a library that python uses. Think of it like, excel in code. Like any other programing language it's going to be most difficult to understand syntax and what to do when. Just stay away from multi-threading for a while.
Pretty good idea, makes me want to support on Patreon actually
My dad gave me version one, of How things work
I think it’s a good idea to get our feedback and to see your expressions on the first video was priceless.
I did want you to ask you dad his opinion of this idea and to also get your opinion. I have seen it on UA-cam once where someone ran a pickup on the fumes from a gas can. A tube from the top of the gas can, above the fuel, straight into the engine, no more fuel bowl, no more carb. The air from the gas can runs the engine. I know it would run lean, but outside of just running an engine like that until something goes wrong, if anything went wrong at all, I don’t know what would happen and I don’t personally have an engine to do that with. I just want to see what you and your dad say about it 🤷♂️
The carburetor topic was secondary, this video was really about a son and father doing things together. I think this is your most beautiful video yet. Thank you Destin!
I so wholeheartedly agree! This was food for my soul and apparently I am not alone in that regard. I am not sure who is more proud of whom here, father or son, but I know I was proud to bear witness to the incredible love and deep respect that was so clearly demonstrated for all to see and hopefully absorb. The knowledge and wisdom imparted here is beyond fascinating and enlightening--it is precious, it is joyful, it is inspiring, it is indeed healing AND it is profound for the incredible example it sets for everyone the world over. In this world, where so many are discouraged, misguided, broken and in hurting each day, I know that this video captured some thoroughly awesome moments, tiny engineering miracles and a countless bits of almost insane, next-level MAGIC that can touch the minds and hearts of even the most hardened among us!
Thanks again, Destin.....and to you as well, Mr. Darryl Sandlin, if you happen along this comment thread. May you both have many more wonderful and blessed years together. I wish I had so great a fortune to have had as many precious years with my parents as you with yours; but alas, that was not what God had in store for my life. I suppose that is why I really wanted to write to you here today after watching this in its entirety, Destin. I was sincere in my separate comment further up in the main thread when I stated that hearing you say, "Yes, sir," that very first time to your dad brought tears to my eyes.
Maybe it's just my doggone allergies or the crummy weather or the 'Ozone Action Day' here in North Texas .....who knows..... but if I'm being perfectly honest, this video took me through a roller coaster ride of emotions and indeed had tears streaming down my cheeks while simultaneously making me goofily grin from ear to ear. I am grateful to you because it made me reflect on those most precious times in my life that I did have with my mother (in particular), prior to her passing in '93 when I was just 21 years old. Life is short and love can be far too scarce nowadays; as are respect and integrity.
Peace to you and all who follow you here.
Biased Be.
Namaste
💫
The carburetor video was the first time I knew more than Destin - an amazing feeling - probably won’t ever happen again!
Haha. Same for the helicopter videos. Though I loved him for making those videos. Great for my students
My dad apparently knew waaaayyy more about this than I thought.
Ditto… but I knew it from a practitioner perspective, not a scholarly one. The slowmo blew my effing mind.
Sooo… the choke controls the mixture ratio and the throttle controls how freely that mixture is available to burn in the cylinders… 👌🏻
@@ArmchairDeity the throttle changes the “vacuum signal” or strength of suction the main jet sees and pulls more fuel up when open or less fuel when closed. The choke adjusts overall airflow allowed to enter the engine and fine tuning of air fuel ratio/mixture for varying conditions. The size of the hole in the main jet in combination with the size of the throat or opening in the carburetor dictates its general air fuel ratio/mixture. Generally once an engine is warmed up, the choke is ran wide open or nearly, and the throttle blade regulates total airflow to the engine and varies position based on engine load, or your right foot for a car.
I really enjoyed the format here of analyzing a video!! Thanks for mentioning the Glass Head Engine and the Shout out, the gift that keeps on giving!!☺
I knew that your name was familiar!! Everytime Scoutcrafter mentions you on one of his videos, I feel like there's something I'm missing!! Now I know where I know you from!!
Also we demand more Dad on Smarter Every Day!
Back in the 60's, a metal fuel line would 'vapour lock' when the line was too close to the exhaust manifold. The fuel in the line would heat up and vapourize in the line so that when it got to the fuel pump (old school systems) there was nothing for the pump to pump. It was designed to pump liquid not vapour.
So, the vapour locked up the fuel pump. The fix was to wrap a few layers of tin foil around the line to insulate it enough to stop vapourization.
I had the same issue on my ‘64 thunderbird. I wrapped the fuel line with some insulation to fix it!
This 100%. The person on the video saying that it was caused by a blocked gas cap vent is mistaken on two accounts: 1) that is not vapor lock, and 2) it was not at all unusual for a blocked gas cap vent (or mistakenly replacing a vented gas cap with an unvented one) to result in such a vacuum in the gas tank that the tank itself would implode.
This is actually still a problem on small aircraft engines (Cessna size is what I'm familiar with) - in some models the fuel line to the carb heats up and can lock up in the same manner, such as when trying to start the engine again after having already run it (engine already warm and the heat "soaking" into other components due to no airflow for a few minutes). Basically just have to let everything cool down until the problem goes away.
I watched this carberator video like 5 times. I liked it when things "clicked" in your understanding.
Those moments are my favorite part of his videos. He reacts like a little kid and its beautiful.
Vapor lock occurs when fuel overheats and vaporizes in a fuel line, carburetor or fuel injector, disrupting the correct air-fuel ratio. And since air can be compressed and liquid can't, the gas bubble acts as a super stopper.
I think.....
Edit, super stopper was supposed to read spring or stopper.
close. you're right all the way up to the super stopper part. if the bubble is in the fuel line it restricts flow like a kink in a hose. if the fuel in a bowl is near boiling temp then the venturi will suck vapor instead of fuel since the vacuum in the "straw" will instantly vaporize it, thereby disrupting the forces that make a straw work. (like when you accidently bend a straw trying to get it out of the wrapper and create a hole and then drink from it. also you don't get vapor lock in a fuel injection system. the fuel is under a LOT of pressure which keeps the fluid gasoline from turning into gas.
@@davidburton3447 yes you can get vapor lock with fuel injection systems. Early corvettes with fuel injection were notorious for it. Modern fuel injection systems aren't as prone due to the fact they use pumps in the tank and push fuel rather than pull it. And with the addition of fuel return lines.
thanks .
I love the way you honored your dad in this video. Humility is important. Love is important. Respect is important. And so, you teach important things and you also taught us some things about carburetors. Thank you.
Love how your dad broke down the vibrations in the bowl. Smart indeed! My favourite part too.
If you want to see scary examples of an engine "running away" look up when an old diesel will do it, because diesel fuel doesnt combust via a spark like gas, if the engine finds an unregulated source of fuel it will continue to Rev untill rapid unplanned dissassembly.
Oh yeah, turbo seals usually, white cloud, knock knock, who's there, the 3rd cylinder. I always have this in the back of my head because I drive an old TDI Skoda with a broken killchoke. Apparently the thing to do is 5th gear and brake hard. Stall it.
After watching the interaction between you and your dad, I was deeply moved when I looked up your profound Proverbs reference … you guys are inspirational …
As a kid in the 70’s, as a birthday present, my parents got me a book with a title like “365 The Way Things Work,” with the intent of learning something new every day. I managed to be patient for a few days. Then we had a few rainy days and I read ahead several months worth. The next year, they got me “Another 365 The Way Things Work” (or similar). Those books were way better than most toys.
I love how adorable Destin's dad is, but also how obviously proud he is of his dad too.
Makes me miss my dad, cherish your parents while you can.
I thought it was one of your best video's. Demystified the whole black magic area of carburation. I have been a car guy for 25 years and have never owned or worked on a car with a carb and like you understood the concept but did not understand it in the way someone who has years of experience with them. Your dad seems like a really knowledgeable & nice guy by the way.
So fun -- and learned even more watching this commentary. Thank you Destin!
Your verry lucky to share that kind of relationship between you and your dad. I loved your vid 👍
This has been a fun series of videos. I bought my first vintage motorcycles a couple years ago so I've been learning a lot about carburetors. I thought I had a pretty good idea about how it all worked, but there were defintely surprises in your experiment. I've always been impressed that the tiny float needle, with just the pressure from the float, can completely shut off the flow of gas. If any gas leaks through that small needle seal, your carb will overflow.
I love the deep throaty “teach me.”
-Stuff Made Here, 2021 4:12
Love the music! Also thanks for sharing the stream! For people not being fortunate enough to afford Patreon this is really nice. Learned so much extra to the original video and the supercut on this channel.
Destin, you have a unique relationship where you and your father respect each other. That is a very rare thing these days
I can easily talk for hours about mundane things like this.
Love the format and discussion. Could listen to stuff like this all day.
As a mechanical engineer myself, you do a fantastic job of making me feel dumb and humble (which is a good thing when you're eager and willing to learn new things)
Lately I have been very into small engine repair, which is basically 50% carb related, so this video was perfectly timed and incredibly fascinating! Also, I love your dad.
I love two moments in this video.... I know, I know you were to focused on triggering the high speed ;)
First Destin realizing that a 4 (8.. insert favorite number here) cylinder motor runs on a single carburetor.
Second ... Destin asking after overfilling the bowl "Is this how you flood the engine?"
While it was a lot of fun watching and learning about carburetor, it was a pleasure to see you and your dad doing things you love.
Keep up the good work.
Vapor lock is when gasoline vaporizes in the fuel system before being injected into the air-stream, causing a difficulty in measuring the correct quantity of fuel for the mixture and or interrupting fuel flow in the fuel system. Vapor lock happens in the fuel rails, not in the gas tank.
Also, I don't believe that was nebulized or vaporized gas, in that shot, that was more likely combustion/exhaust gasses coughing back out through the intake instead of out the exhaust as it should. If you watch closely, it looks like it runs out along the top of the intake from the engine towards your hand and then settles down as it cools after mixing with the cooler outside air.
Love the channel as anyone who loves learning will. Today I got the bonus of seeing so much of my dad in your dad. I lost him years ago and miss him very much. Thank you for the visit.
Turtle to rabbit is the best scale ever. I love that lawn care engines still use it.
I'll keep editing my comment as I see more in the video.
2:54 Mr Destin and yes i called you that(I'll explain at the end of my comment why), we know your dad knows what he is talking about cause he is YOUR dad. I mean look at you. You make youtube videos explaining extremely amazing phenomena and observations and you tell the truth and only that. We don't need confirmation that your dad is awesome. We already know that.
I called you Mr Destin or sir if you like cause you are one of the people who deserve it. You basically teach people about science and you do it with excellence and ease. Whoever dislikes your videos is probably a robot channel that doesn't even see the video. just a computer that is programed to dislike videos.
The moment at 25:58 was when it finally clicked in my brain why early Spitfires struggled with negative Gs during WW2.
The choke doesn't produce a rich mixture of fuel as such. Cold air has more of a rick oxidiser, in this case oxygen. The gas molecules are tight together, so because of the rich oxygenated air, the air needs to be choked. As the air travels to the warm engine the mixture ratio then changes, that is when the mixture becomes rich in fuel. That's how intercooler work, before the air travels into a turbo. Love the channel. Keep up the good work.
Still love the little Bible quotes at the end of your videos :)
39:22 this is my fave part. It really feels like Destin's dad actually baited him into the whole "harmonics/tuning fork" while knowing he was completely wrong.
So he baited him in, then took him to school.
What a dad! And he did it so lovingly.
Python is VERY mathematically proficient. It's used in a lot of mathematical and statistics based algorithms. But it can do a lot of other things and it's "fairly" easy to learn and use.
He has me cracking up when he keeps backhanding his dad in the chest lol
EFI computers make up for gasoline clinging to the walls (in this case throttle plate also). Its called "wall wetting" and when you're tuning with EFI it is something to consider. The computer uses it as part of the fuel scheduling algorithm.
The book was originally published in 1972 but the version you have there is an updated version that was first published in 1990.
RE: PETG. I used to only print in PLA because it came out better, but then I discovered APT (advanced polymer tape). It's like a yellow tinted tape almost like packing tape, and I wrapped it in rows around my heated bed. Now my PETG prints so good the bottom has a glossy surface!
I was not able to grow up with my dad and I'm a bit older than you I believe and I know my father is older than your dad we are finally getting some time together and you are right those moments are priceless my dad is a very smart person we would have both benefited greatly if we could have been able to grow together.
That was fun, thank you for the video.
Really appreciate your youthful exuberance on every topic you choose to ‘work over’! Seriously impressed by your skill in so many areas too, really.
You’ve got that ‘good teacher’ gene, just like your dad.
Thanks brother, appreciate you.
Patiently awaiting the natural course follow up video: Rebuilding a Holley 600 ‘double pumper’ 4 bbl, with Destin!!
Loved this video!!!! great relationship with your dad, cherish it!! Hope to maybe see you around town (Huntsville) someday!!!
very honest and genuine, loved it.
Smooth changes in surface allow laminar flow, whereas a step change leads to turbulent flow. You want the entry to the venturi to be laminar, so the suction generated is not going to have a variable component, but after the fuel is introduced you want turbulent flow, so the diameter can change rapidly to allow more turbulent flow.
Great job, the air space above the maximum gas level in the float bowl also plays an important role. Your model carburetor should be able to illustrate the role of the float bowl level also. Great job!
This was a fun video to watch on both Smarter Every Day and Smarter Every Day 2! Super informative and I learned a lot!
I was going to post on your original video that the carburetor float kind of operates similarly to the interaction between a floater ball and a flapper in a toilet tank.
it was absolutely beautiful i said it in the video thank you for sharing it was amazing
Venturi's are often asymmetric with a shallower exists. This is to expand the flow gradually and thus minimise turbulence.
I just ordered a complete set of those books, and i probably overpaid a bit lol. There are 4 volumes if anyone is wondering, and there are quite a few sets on amazon. There are a number of dates listed, that are all wrong. They were published in 1969, just before ISBN became a thing. They don't seem to have an ISBN applied after the fact from a later printing either. Its also a european english series. because of all that, amazon has probably 20 different listings for the set, and even more for each book
The illustrations look identical in style to a favorite of mine "The How and Why of Mechanical Movements" by Harry Walton, illustrated by Ray Pioch. Popular Science, Dutton publishers, 1968. I have been looking for something similar and I think at last I've found it!
You are very respectful to your father something that you don’t see any more
Vapor lock is when the fuel in the supply line to the carburetor gets to hot, boils and creates air bubbles that interrupt or stops the fuel from flowing to the carburetor.
Lived with this regularly in the 1940s and 50s. If you insulated or rerouted fuel lines you ended the problem.
I wish my grandfather was still around. He died when I was 10, over 30 years ago. Sleep apnea, and diabetes.. wish I knew then what I do now.. cause it's easy to fix..
Anyway, he was an awesome engineer.
I at least have my father-in-law though.. he's in his 80's, but was out working on a tiller carburetor a few weeks ago!
My dad has volume one and two of that book from like the 60s!
it’s the fuel undergoing a phase change causing a loss of prime somewhere in the fuel system. it can vary based on fuel system design and arrangement.
Coming to your question at the end - i work a lot with python - both private and for work. At work i automize processes like running software tests, controlling power supplies or converting files to a specific data format. When programming for pure fun i already build a smart rgb-controller for my pc which was connected via a proprietary protocol to a deamon on my pc, currently i am working on a fan controller for the basement, which only starts the fans when the dew point is acceptable.
GREAT VIDEO, THANKS
can u also explain other carburetors because after watching ur carb vid i also saw a youtube channel called mechanic restorations and he restores old mowers and stuff like that but anyways when he was restoring and disassembling some of those engines they had real strange carbs that looked nothing like these ones and i couldn't recognize any familiar parts. id love to see u explain some of those old carbs too
Sounds like a great opportunity for a collab with Holley or Edelbrock to deep dive into fuel/air mix and making 'splodies bigger.
I don't want to learn from somebody paid to do it...."I want to learn "X" from my Dad". Words to live by.
I cherish the days my dad spent showing me and teaching me how to do things.
Gasp! At 34:39, Destin introduces Non-Laminar Flow!
The only suggestion I have is use a rigid table. The wobbling at the beginning of the video was giving me motion sickness (and I never get that).
You should do more videos like this
I'm still doing a lot of batch files today :D
I started learning python this year but now I shifted to C# again because of my job.
Zapper lock is when fuel vaporizes in the needles.
The up and down motion on a resin printer is to break the print free of the fermented sheet. You then need to lower the print back to where is barely contacts the few sheet.
41:53 macro high speed fuel induction moment...
You can see the fuel stream gets pushed out(to the inlete) for a few frames( 3-5? don't know your fps) this is a demonstration of the effects of " cam lobe overlap", were the E valve is almost closed and the I valve starts to open allowing "reversion "(reverse flow) a major dynamic in performance cams/heads.
side note This was the first form of diesel "EGR" (exhaust gas recirculation) most will argue that a light duity Cummins didn't get EGR till MY07.5 ,however, they just don't understand that lobe overlap was increased in MY03.5 to enhance this reversion effect to replace a % of the fresh air with inert(used up dirty soot laden air) in an attempt to reduce NOxx production. This was technically not EGR as it was not recirculated just traped. It retained all of its latent heat which overwhelms the cooling system by keeping more latent heat in the cylinder and it has a very poor percentage of NOxx emission reduction if any.
At 4:30 he turns into AVE!
Speaking of see through engines and carburetors: what about an acrylic hybrid rocket engine? I mean many people showed those before, but no one ever had a phantom at hand :P
Edit: oh an btw, it IS a rocket nozzle and you were totally right calling it that. The crucial difference is just that you don’t reach Mach 1 In the throat because you don’t have enough flow/pressure.
I can't wait until Destin stubles on something that has Snatch Block and Laminar Flow in one thing. Man he's gonna lose it xD
I have that same 4 volume "how things work" that called to me from a bookstore shelf many years ago.
Did you see the video by tested on time lapsing a resin printer? Not certain if it'd work with the formlabs printer but if you can trigger the camera with the exposure light, you can get a perfect timelapse with no effort.
Amazing! 💖💖👏🏼👏🏼
Спасибо за видео, комментарий в поддержку вашей работы
i would love to see some slowmo and mechanics of a cnc machine. slow mo tight shot of how the bit cuts into the materiel
I've never seen a hard back copy of one of those I us to get those as a prize for completing work back in 1972 and they where old paper back at the time I was receiving them second hand I think they most have been printed around 1965 .
Keep up the great work and entertainment Destin
Those secondary vortices help mix your fuel with air. Maybe it's a good thing.
Why didn't you print the baffles in resin on the UV 3D printer? The resin presumably has higher temperature and solvent resistance?
let's take a sec to just respect ur old man... u wanted to get some good old fashion dad time... ur dad drops the father and son power play and pulls off the old "hey boy get on down here and lemme teach ya bout how carbs work " now let's remember the time and place becuz this prolly hasn't been something that's happened In 2 decades lol I'm 36 and I know my dad's dad prolly pull this same move in 56 haha
Was this supposed to be a patreon-only video? Because I like this very much
OMG I HAD THE WHOLE SET OF THOSE BOOKS… they got lost in a move. 💔 I loved those books.
Whole set of what?
@@Corn0nTheCobb point taken. Text adjusted. The whole set of those How Things Work books. They are fantastic reference works on pretty much anything pre-digital.
So what are the 2 holes in the center-line under the venture? From the fuel bowl up through the center.
40:30 4-stroke cycle: Suck, Squeeze, Bang, Blow :)
I love how southern your dad is. Pure American
The info on the 4-volume set, as you requested, good sir:
Title: How Things Work Volumes, I to IV
Binding: Hardcover
Illustrator: Roger Jean Segalat
ISBN 10: 1114119512 / ISBN 13: 9781114119512
Published by Edito-Service, 1900
Published by Bibliographisches Institut and Simon and Schuster, 1984
Published by Simon and Schuster, 1990
0:46 yes I did, but not exactly a mower: my uncle used to have a car with a carburetor. And if sometimes the battery or the starter would die, we would start the thing up with a manual crank.
I have a great video idea for you. Dowsing, aka witch sticks and finding underground utilities.
40:25 made you feel stupid and proud
Jet engines have one more operation, turn. Suck, squeeze, bang, turn, blow. I have to memorize that when I got my AW wings.
Above the main jet in the bowl is the emulsion tube. The gas going up through the jet gets emulsified into a fine spray of gas as it enters the venturi tube. The emulsion tube is the worst for getting.clogged because it uses very fine holes to aerate the fuel. It shoild be unscrewed out and cleaned for sure.
Rockin a Leatherman? Nice
I'm very sad that I could not join that stream while it was live!
We use python at work for anything from webserver to data analysis. I think python is a good tool for quick program writing and I'm sure you'll put it to good use!
when you went into reading the bible verse you included it touched me. dont know why. got a litle choked up. that been happening to me more and more lately. maybe its because theres not enough of that on a daily basis in todays world of social media
39:40 to me it seems the thing shakes 2 times as hard.
it shakes back and forth for each stage. if it was not double it would go 1 direction on the down stroke, and the other on the up stroke.
So to me it looks like a double yes.
I am a Patreon supporter and loved the 'making the video' video. But it doesn't have to be an hour. And maybe more time for questions.
I know the stoichiometric ratio of air to gasoline because of a video game (s/o to Automation: The Car Company Tycoon Game)
How about running other fluids then gas through the transparent one and create a vacuum with a vacuum cleaner?
Daddy made us some content
When my dad first taught me carburetor mechanics I got confused every time he referred to the needle cuz I thought he was pointing at the pin that holds the float in place lol. I didn't realize the needle was inside and above the float.
what would happen if you run two carburetors in line or parallel
How Things Work Volumes, I to IV Hardcover - Illustrated, January 1, 1990
whats funny is right before destin said the four words to remember the cycles, i while watching the video couldnt remember them, but right before he said them i remembered suck squeeze bang blow