I think a lot of people that don't know machining or engineering wouldn't have any idea how much effort it takes to make something like this. Especially with how amazing it ran! They always say you can tell just how good a motor is by how it sounds and how smooth it runs... And usually engines on the smaller side (especially 4-stroke) can be a little finicky. When I was in my junior year of tech school i made a single cylinder pneumatic motor that had a small generator rigged up to it, I wired it to a small maglite light bulb and that was about it. It took a good bit of machining and I had to get the tolerances pretty tight but it was an awesome project! It's almost 30 years old into this day you can still start it right up and it purrs like a kitten! Even the original maglite bulb still works

now that's a 1 cylinder, 6.6 microliters, 120 mousepower engine that goes from 0 to 60 feet/h in under 3.5 seconds

This was insanely cool! I've been a machinist for many years and this takes it to a whole new level! You could sell this as a DIY kit and I would buy one. Very cool and Good Job!

This is like watching an artist work sir! The perfect machining, to the exact tolerances required, to create such a small scale working engine. Mind blown...

No words, no music, just work. Excellent! Without this “when I was child, I saw an ice engine and..”

If I may ask, how great did it feel after 1000 hours of design and building to hear that engine start successfully? This was beautifully done and well executed. Nice work sir!

No talking, no music. Just awesome stuff being done.

I've watched this and now I'm trying lift my jaw from ground. So much precision, so much skills, so elegance, so perfection, so magnificence. Great job bro.

Very impressed. No matter what, you'll always have that little engine as a reminder of your skill. Great job man!

if only youtube had Oscars, the award for content creation would go to this guy. I'm a Civil Engineer, but this video made me respect the mechanical engineers, even more. salute to you sir.

I spent my youth and early adult years competing in racing control-line model airplanes that had 2.5 cc engines. (FAI Class F2C - Team Race) There were many aspects of the sport/hobby that were required in order to be successful, from a light but strong model, to a high performing quality motor. As nothing competitive was available off the shelf at hobby stores, everything was hand made, from the model, to in some cases the motors itself. We had a highly skilled machinist who for several years made the motors from scratch, while in other years we relied on motor specialists who had mini mass production runs, and made their motors available for sale to some competitors. Motor technology was continuously refined and performance improved and the motors became more capable. My brothers and I raced planes with diesel (compression ignition) two stroke motors that had to fly in 100-lap qualifying heats, and 200-lap finals. There were strict limitations on plane dimensions, including fuel tank size. Essentially our plane had to fly at about 125+ mph for at least 33-laps on 7-cc of fuel, then make a pit-stop to refuel. A really good 100-lap heat race time including two pit stops is in the low 3-minute range. A successful racing engine is all about metallurgy and precise tolerances. We bought some Russian-made motors which were consistently winning at the time, and our machinist couldn't figure out how they made the pistons, which are critical to success. It appeared to be some sort of sintered blend of aluminum that was high in silicon. As our racing motors were always run lean to get the most range, they ran very hot, so the science behind pistons was in how to control thermal expansion at high temperatures so the engines didn't seize while running hot, yet expanded at the same rate as the cooler cylinder to maintain compression, while being hard enough to show little wear after many races running with low percentages of lubricant in the fuel. Cylinders were typically chrome-coated and had a very slight taper so that when pistons were lapped to fit they were 'tight' at the top of compression, yet ran 'a little loose' through the rest of the bore to minimize friction. We had to learn a lot about everything from aerodynamics; construction and design techniques; materials science; combustion and fuel science; to competition strategy. We were lucky to receive 'free samples' of new high-strength materials, such as just developed Kevlar and Carbon fibre, from companies like Dupont, and fuel additives from Shell, who were willing to support our efforts. We we lucky enough to qualify on the Canadian team about 6 times to compete at the FAI Control-Line World Championships in Europe in the 1970's, 80's and 90's. It was a great learning experience and an opportunity to travel and represent our country in a highly competitive and technical event. A quick search on UKposts of - FAI Class F2C - Team Race - will show what the racing is about.

There's a joy in my heart I can't describe with words when I see someone do something like this for the sake of doing it.

On behalf of all engine heads, thank you for this awesome video and thank you for your creativity. God bless 🙌

I love how he didn't explain anything verbally and that there wasn't any background music. Just the sound of the machines sublime!

No music, no voice narration. Perfect video.

Unlike every other video I've seen, this is literally the most productive video and time was used very wisely on this engine. I've seen videos of people doing dumb stuff and TRYING to "invent" things we will never do or use a single day in our lives. This video just taught me that there really are talented people out there that are actually productive! Very rare to find people like you! I'll give you a 100 out of 10. Over all, this engine was fine crafted with precision, and a very clean engine, clean cuts on every component. You must be the most talented person I've seen a video on.

Excellent work. It looks like the piston gained an o-ring by the time you assembled it ;) What type of o-ring is that? Does it hold up?

Fantastic planning, design and manufacturing skills - well done. I started my apprenticeship in 1978 and you brought memories flooding back when you used the Engineers Blue for marking out - I had forgotten that stuff ! Great job !

I'm no machinist, but it's easy to tell you know exactly what you're doing right down to the spec. That was a beautiful build, bravo sir.

All that anticipation, and he never opened the throttle to hear it scream. Still great piece of mechanical art.

I've seen quite a lot of miniature engines including some radials up close and personal. Made by guys/gals that have an arsenal of machines to fabricate them, But I have to say the precision and accuracy, let a lone the design, that you've done with a Sherline is the most impressive build I've seen in my old age. I enjoyed the build videos but this compilations is an inspiration in machining and videography! Thanks very Much for the ride and hope you continue to test yourself with projects like these!! Hat Tip ~PJ

When you first began to turn it over I realized I had actually slid forward and was literally sitting on the edge of my seat. When it started I actually cheered out loud. Fantastic work!! 🏆

The average person can't even spell carburetor, let alone make one from scratch. The amount of knowledge you must have to create on this level is never appreciated on the scale it deserves. So cool.

The precision at this scale, insane!

This really blew my mind away. Amazing application of engineering, design & craftmanship. Making stuff at this scaly requires some scary pinpoint accuracy. Super cool !!

All a person can say is, "Wow!". You are a very talented machinist.

This is one of the most impressive things I've ever seen in my entire life. Well done.

this is amazing

The sheer accuracy of the design and the making of each component is very entertaining to watch. Final product was awesome. Reminds me of how scared I am about making something cuz of low accuracy haha. Really great stuff tho never disappoint 👍

Is design time included in the 1000 hours? That's almost half a year at 40 hours/week! Thank you so much for such a great video!

I can just imagine the moment the engine roars to a start he’s standing behind the camera all stoked like: “It’s aliive! It’s alive! Hahah!”

This is just amazing. The delicacy, the precision. Wonderful example of machine work here 🍻

This is amazing! It's crazy how they designed and built motors without CAD back in the day

Who in the freaking world dislikes this? This is incredible.

You have some insane off-center chucking skills. You make it look easy!

I admire both your skills and imagination. As you were showing the various components you were about to machine I was thinking that I would have absolutely no idea were to even start. Well done!

Impressive! In scale, accuracy and probably in lots of ways I'm too ignorant to appreciate, this is impressive!

本当にすごい！ 男心をくすぐられワクワクしながら見てました。

When it pops out at 1-45 , that was purrfect m8, I’m a qualified mech. Engineer but haven’t worked on a machine in 30 yrs I really miss it sometimes, that is brilliantly crafted also brilliantly shot video , well done you !!!

Episode 1 : Piston and Connecting Rod ukposts.info/have/v-deo/kJqdip15kJuZkZc.html Episode 2 : Gear & Valve ukposts.info/have/v-deo/bodye6mem3iXtWQ.html Episode 3 : Crankshaft and Camshaft ukposts.info/have/v-deo/bKB6hKipmq1-kXk.html Episode 4 : Engine Block and Cylinder Head ukposts.info/have/v-deo/nnV_jauafmd2upc.html Episode 5 : Carburetor, Flywheel ukposts.info/have/v-deo/b2Skip2jh3lqzKM.html Episode 6 : Final Assembly and First Run ukposts.info/have/v-deo/oaOmn6mFsKd9y2w.html

This is now one of my all-time favorite videos. 😭❤️👍🏼 It's so comfy to watch. The craftsmanship is amazing.

The amount of precision, and how beautifully it runs is amazing.

Awesome, it took like 10 seconds of watching a jet needle being made to work out how accelleration works on a practical level - that's mega! Thanks!

This is a phenomenal video. Thank you for posting! I wish that everyone had a fraction of your work integrity.

This was so satisfying to watch, I was immersed the whole time, and when it fired up, I had the biggest smile on my face. Faith in the algorithm restored. Thank you!

You made an entire, working engine! This is beyond anything one would ever expect to see on UKposts. This is beyond outstanding even. It's a wonder.

I audibly said "yes!" when you popped the piston out of the cylinder! Great stuff

Absolutely unbelievable. One of the most impressive things I have ever seen on the Internet.

Absolutely stunning! I love seeing such a complex final product being made from scratch!

Thank you for sharing something as amazing as this with us. I know absolutely nothing about engines, or mechanical engineering at all, but I appreciate that you decided to show us this. Can't even begin to imagine the amount of work that went into this.

Beautiful! Just beautiful. This can about make a grown man weep.

I can't imagine how ecstatic it must've felt to get that running.

Absolutely brilliant! I love watching people do precision mechanics, and wish I had a lathe myself.

i'm still convinced the combustion engine is one of mankind's most impressive engineering feats, second to nuclear fission.

Simple, just take a little metal and a sophisticated lathe, and just like that you got an engine. So easy even a child could do it. Laugh out loud. Great video thanks.

That jig that let you cut the cam shaft was pure magic to me

You know you’ve got some serious talent when you have a 15+ minute video and not one word is spoken and I watched the whole thing.

Most people don't realize how hard even the 3d drawing part is. Amazing work!

After watching this short video I instantly subscribed! Aside from being fortunate enough to have all this amazing equipment at your disposal, you are extremely gifted and talented! This is absolutely brilliant work! I wish I was half as gifted as you man!

i was thinking its a beautiful model and had my doubts it would actually take the force of combustion, even at small scale, but then you showed it running. completely blew me away with that. amazing. absolutely amazing

Beautiful little model engine! Nice to watch the build. Thank you for sharing this build. I think Joe Pi needs one like this to power his miniature workshop's future Transmission to run the tool machines with belt drives.

This would be a great desk ornament, a work of art . I would buy one in a heartbeat

this guy deserves way more support and acknowledgement

Gotta be a good feeling to make your own motor, extremely impressive.

Wer mit solchen Heimwerkermaschinen so genau Teile bearbeiten kann, hat echt was drauf, weil man zum eigentlichen Aufwand noch die Macken und Abweichungen der Maschinen "kompensieren" muss, was dann allgemein als Berufserfahrung bezeichnet wird. TipTop!

小さな4サイクルエンジンが動作する姿は本当に美しい｡

Still working on the turbo, ha! =D A piece of art!

Fantastic! A thing of beauty. I could feel the thrill when you assembled it!!!

sounds 10x better then I thought it would

I'm a doctor and I think I'm pretty cool...but you are MUCH cooler. I forget that there are people in this world with those kinds of skill and brains. Amazing.

Hard to comprehend that one person can have the engine design and machining skills that you have. Amazing project!

As a mechanic and a machinist I really love this! Outstanding work!

You are INSANE!!! great work mate

I didn't read through all 4190 comments so I'm not sure if anyone asked already, but what kind of lubrication does this use? Also, if I may indulge in a follow up question, I'm wondering what flavor of pop tart you would recommend? Thanks in advance.

The precision of everything from design to the end product of the engine (along with the editing and video shooting as well) was so nice 💯💯. This is going into the record books, and I hope that upcoming generations of engineers watch this and get inspired. Thanks a lot 💯😇

Fantastic work! One of the best DIY engines I've ever seen. My only disappointment was that you didn't open the throttle a bit when it was running. I'd love to se it rev!!

I've never said this sentence before but... That spark plug is adorable!

That was so cool watching you make that engine. I loved every minute of it and I subscribed to your channel.

As someone who has purchased a mini engine before it's far cooler watching a machinist make one by hand

Wow that thing is a piece of art i mean imagine how tight tolerances does a engine like such need to work and this guy achived that in his home shop with commercially available machines 🤯🤯

thanks for the upload. didn't even know this was possible. absolutely amazing

Seeing that gear being made... In my head I just hear Chris Fix "Beautiful"

This is not engineering. This is art. Truly amazing work

Love it, that engine sound at it end just gives a great felling of satisfaction.

Truly a masterpiece. I may have missed something but I don't recall seeing any lubrication or oil in the crankcase.

shoulda let that engine run for a full minute with sound at the end. Make another video where it just runs. It's so satisfying.

absolutely mind-blowing! could watch it over and over again. Congrats to this amazing project

She makes a whopping 2.5 horsepower at 700 rpm she is a beast in the engine world And I thank your for building this it’s so cool

that was some fine skills at work there. Joy to watch you work.

That is extremely impressive. Surprisingly loud too.

That is awesome. I can't wait for my machining courses, stuff like this inspires me!

Absolutely amazing, impressive work. Thank you for sharing your skills with us.

What a fantastic work of art! What kind of lathe & mill do you run? I'd love to see a video on the two of them

That motor sounds super healthy definitely surprised!!!

Great video, many thanks. Keep up the work on the small machines. It is encouraging to folks who do not have room for larger machines .

So amazing. I could watch these types of videos over and over. So much talent. I know the engine is not a new thing but to watch people craft the parts out of blocks of metal stock just amazes me. It takes a lot of talent and know how and patience. Great work. Certainly enjoyed the video.

That was AWESOME.. I was amazed at how good that little engine sounded..

I am incredibly impressed by this. What an achievement

That was strangely satisfying, well done very well done.

This might be the most amazing thing I've seen on UKposts. Did you design the engine on your own? As in, all the parts that you finally put together? How many errors did it take (apart from the timing error that you mentioned on the video)?