BTS "How Does A Carburetor Work?" - Behind the Scenes Commentary | Smarter Every Day
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- čas přidán 5. 07. 2021
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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 CZcams 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 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.
Also we demand more Dad on Smarter Every Day!
Imagine how emotional these videos are going to be when the unfortunate day of his dad's passing. I like how even tho he is a grown man with kids he is still a kid with his dad. The thing I love the most about this video is the relationship between them. The love the friendship the respect.
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!!
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.
I have a classic mini with a carburetor. I live in Scotland while my farther is in England. While i was restoring the car, i couldnt get the fuel supply so i phones my father and he gave me a very similar strip down examination, only it was purely from memory as i was over 500 miles away. He had me strip it down, and reasemble it and i learned how it worked.
This video brought back great memories, but also gave me a greater apreciation of the beauty inside the carb whilst operational.
Thank you for this video!
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 .
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.
Destin, this series was a lot of fun to watch--both for the technological topics being explored and for the awesome father-son interactions.
That said, selecting a carburetor from a Briggs and Stratton engine is both a blessing and a curse. It's a blessing because it's such a simple device--it's kind of the My Little Pony of carburetors: the way its major functions work is pretty easy to see (such as the atomization of fuel in the venturi.) However, it's also a curse because, being so simple, other functions are not as easy to see or understand (such as the tricks used to achieve a reasonably-decent fuel/air mixture at idle.)
I'd recommend a follow-on to these videos using a passenger car carburetor--either a two- or four-barrel carb with progressive secondaries and an automatic choke. With such a unit, you'd be able to see how the dedicated low-RPM idle circuit works, how the main jet(s) meter fuel for a wide variety of load and RPM scenarios, how accelerator pumps make it possible mash on the gas pedal without having the engine bog down, and the way mechanical linkages ensure that the choke (and secondary barrels) do the right things in most circumstances.
Your Dad has a bunch more knowledge related to these more complex carbs; he slipped and commented on "metering rods" which are something often seen on larger vehicle carburetors, but I could tell he was working hard to keep the conversation at the My Little Pony level so his son could learn from the ground up.
Thanks for sharing such a wonderful experience!
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.
My oldest son just graduated from a MST Magnet High School. During his time there they would have Science/Engineering Fair (students from his school have actually won the ISEF). He worked on a Rasberry Pi controlled irrigation system that measure soil moisture content, then opened sprinkler valves when needed. It also had a RGB LCD readout and app interface he built. He wrote a lot of python for it and some Java. It worked great and he actually got an environmental conservation award from NASA for it. It conserved water by only delivering exactly what was need. He mostly learned he didn't want to be an engineer or computer programmer :), but he learned a lot about the process. He is now going into pre-med focused on neuroscience.
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.
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 proud you are of your father. So heartwarming
He has me cracking up when he keeps backhanding his dad in the chest lol
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 …
This video has given me shivers. I am desperately interested in playing with carburetors now.
Destin, you have a unique relationship where you and your father respect each other. That is a very rare thing these days
From a gearhead perspective, this was a great explantion for beginers.
He started that tiller first try, haha. dropping the Dad mic hard.
Love this format Destin. Keep it coming!
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.
30:30 is my fav moment. I love learning, and witnessing things helps me learn. I can intuitively understand what’s going on, but only if I’m witnessing it. Thanks for doing this, Destin! Please consider making a video that displays a transparent carburetor feeding a transparent combustion chamber so we can witness the strokes at the same time.
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.
So fun -- and learned even more watching this commentary. Thank you Destin!
very honest and genuine, loved it.
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)
That was fun, thank you for the video.
Really enjoyed the video especially seeing you hang out and learn from your dad!
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.
Loved this!!!!!
Turtle to rabbit is the best scale ever. I love that lawn care engines still use it.
I love the deep throaty “teach me.”
-Stuff Made Here, 2021 4:12
Your verry lucky to share that kind of relationship between you and your dad. I loved your vid 👍
Awesome series of videos !!
I learned a great deal from them !
Love Your Father !! !
(lucky to have him around)
This was a fun video to watch on both Smarter Every Day and Smarter Every Day 2! Super informative and I learned a lot!
Great content, really informative, and enjoyable.
I can easily talk for hours about mundane things like this.
GREAT VIDEO, THANKS
Thank you for your teaching!!!!!
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.
Keep up the great work and entertainment Destin
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.
oh man this is really cool! I love seeing commentary on CZcamsrs videos. I always wished cgp gray would do this. That being said I didn't know I wanted to see this until I found it in my sub feed
Man I loved your dad in that video. So great.
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.
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.
Thank you so much for this, it has been an Honor to see the evolution of what, a mechanic like my self, relates what we were taught, Years ago, and be able to see a visual explanation. and how it makes sense. Atomization of fuel to air mixture.
Amazing! 💖💖👏🏼👏🏼
Loved this video!!!! great relationship with your dad, cherish it!! Hope to maybe see you around town (Huntsville) someday!!!
I loved the live stream. 😊
Such a wholesome series of videos. You should do a follow up and teach your kids how it works. Pass it along!
it was absolutely beautiful i said it in the video thank you for sharing it was amazing
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!!
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.
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.
Loved to see the interaction between you and your dad. So much mutual respect between you two but you can still tell who the Alpha is, yet you can also see how proud your dad is of your abilities and ah hah moments. I have had very similar situations with my dad but now we are half a country away from each other.
My gramps taught me how to fix small engines, and i wish he was around still so i could show him this video. i would sometimes show him some of your videos in the past, and he always thought they were awesome
You are very respectful to your father something that you don’t see any more
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 moment at 25:58 was when it finally clicked in my brain why early Spitfires struggled with negative Gs during WW2.
Cant wait for the" Dad Every Day" channel ! :D
Спасибо за видео, комментарий в поддержку вашей работы
The book was originally published in 1972 but the version you have there is an updated version that was first published in 1990.
You should do more videos like this
I have that same 4 volume "how things work" that called to me from a bookstore shelf many years ago.
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 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!
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.
This video you’re watching is from SmarterEveryDay. You made that video.
I guess you commented before fully watching.....
@@mikeuk666 I watched the video before I commented, actually.
Your dad is a metrologist?
I would seriously love to see you just sit down and have a chat to him about his work.
When simply measuring something becomes an occupation and trade in its own right you know that there's something deep and fascinating hiding in there somewhere.
Also, vapour lock is simply heat from the engine causing fuel to vaporise in the fuel delivery line to the fuel pump, which was commonly part of the carb. You then end up putting vapour into the bowl instead of fuel and you lean out the motor or even stall altogether. Depending on the pump design the vapour can also cause a loss of prime and be hard to get going again.
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.
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.
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.
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.
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!
I love that Destin likes Old Testaments.❤️
Why didn't I get invited to this meeting? lol You should take a look at a Holley 3310. People either love Holley's or hate them. If they HATE them it is because EVERY aspect of the carburetor is calibratable. If they LOVE them it is because EVERY aspect is calibratable, and they have a dyno and exhaust gas analyzer or a drag strip. I fit into the ladder category.
Wait, stop. I need to say something. Carburetor technology became amazing over time, but carb's SUCK compared to fast computers running EFI.
Someone asked the question if there is a perfect air fuel ratio why not run it all the time? GOOD QUESTION!
Good answer: Because the perfect ratio changes based on ... load (intake pressure/vacuum), engine temp, ambient temp, intake air temp, fuel quality, engine RPM, etc., etc., etc...
Fuel injection delivers fuel based on the needs of the engine at that time. Note: Based on the programming of the computer.
Back to the video, I'm listening but I need to be watching.
I'll be back.
At 57:00 to 57:05 Like I said, "your inferior clear carburetor made a much better video than a real carb could have". Beautiful indeed!
I can tell from this video you are learning more and more about carbs, and I would like to think that my comments on the second video might have played a part in this. This might be a good time to warn you to expect comments on the upcoming fuel injection videos. ;)
You also said "people on the internet are angry". I strongly disagree. ha ha
Tell Dad, oops I mean Darryl thank you very much.
At 4:30 he turns into AVE!
Love this series. Have you thought about attaching the suction to a controllable suction pump and use water instead of the engine? I'd love to see some slow mo experiments changing the internal shape of the body and the throttle/choke. Real world .....Can't think of the word....... something Dynamics 😂🤣
"How Do Carbureators Work?"*
"How Does A Carburetor Work?"*
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.
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!
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
Like the live video sessions. Hoping to see a vertical shot from the canon...can you fire a rocket from it :)
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.
My dad has volume one and two of that book from like the 60s!
The vol 2 book was published in 1982 by Edito-Service S.A., Geneva
Was this supposed to be a patreon-only video? Because I like this very much
Venturi's are often asymmetric with a shallower exists. This is to expand the flow gradually and thus minimise turbulence.
Broooooooooooo. Lol, Destin.
21:41 Missed opportunity for purple pen (blue air + red fuel)
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.
The book from what little research I did was printed on October 1st 1971. 20 years before my exact birthday
Edit: oh u were asking ur live stream audience lol