Big thank you for watching this video :) Please check out the making video. Part1 : kzfaq.info/get/bejne/gL2Aq7Nj2tunemg.html Have a great day :)

Next up: Flying a plane with a micro radial engine.

Maker B. The only person that would build a micro radial engine to cool his coffee.

You deserve that cup of coffee, great work! I’m subscribing!

What a fantastic course on metal working techniques with a fun purpose in mind! On top of that, the inner workings of the engine mimic a real radial engine very closely on the principles of operation. Well done, sir!

Love how it starts up kinda rough then smooths out. You'd think it was running on gas. Video is excellent.

He has heard our pleas, and we are grateful to him

Honestly?! In terms of explaining, building and giving this to us, you are an ARTIST! THANK YOU MAN! 🍀👍😃🍾🌹💞

Excellent presentation style! Thank you for putting thought and time in the making of this video for our enjoyment.

Hi Maker B, I just watched your videos on the construction and modification of your 9 cylinder radial engine, so first off may I congratulate you on your workmanship, it is absolutely superlative and I have turned a strange shade of green with envy over your workshop. I haven’t read all the comments, so forgive me if someone has already brought this up, but I may have a way of increasing the efficiency and power output. In your video you stated that the coils were being energized in numerical order starting with 1 at the top and then proceeding counterclockwise from the camera’s point of view to 2 then 3, 4, 5, 6, 7, 8 & 9 before starting the next cycle. After you installed the clear crank case cover I noticed that by energizing the solenoids in sequence the amount of movement of the next solenoid’s piston (technically it is solenoid core, but piston sounds better) is fairly small. For example after energizing coil 1 you energize coil 2 which only pulls the piston a short distance and rotates the crank through 40°. However, if you look closely at the position of all the pistons you will find that coil 6’s piston is almost completely out of the coil. Unfortunately, while energizing coil 6 would drastically increase the comparative movement induced of the piston and by inference the crank it is more than 180° (200° to be precise) past the position of coil 1 and would cause the crank to try and rotate in the opposite direction. However, the piston of coil 5 is also almost extended fully and is 160° past coil 1. Therefore by energizing coil 5 instead of 2 it would produce a much greater movement in the piston which would result in the crank rotating through 160° instead of 40°. If this sequence is extrapolated advancing the coil energization by 120° each step the sequence would be 1, 5, 9, 4, 8, 3, 7, 2, 5 and back to 1 producing 3 rotations of the crank instead of 1. Having said that trying to rotate the crank through 120° per coil energization may be too much so it might work better if only advance the energization order by 80° giving an energizing order of 1, 3, 5, 7, 9, 2, 4, 6, 8 then returning to 1, which serendipitously corresponds to the firing order in actual radial engines. It shouldn’t be difficult to try as all you would need to do is either rewire wire the coils appropriately or if change the sequence by reprograming the microcontroller. Great work, masu

This is the coolest thing I've seen in a long time dude... when the whole world has gone to shit and it's all bad news this made my day. Cheers

Outstanding! I appreciate the complexity, the precision and the imagination it takes to do this. I also appreciate the care and high quality videography it takes to present it. I do have a couple questions: Where do you get these ideas and do you do this for fun (hobby) or professionally (as in build working prototypes on contract)? PLEASE keep them coming!!

Incredible machine work and craftsmanship. The engineering and precision involved to produce such intricate parts is truly superb. Very enjoyable to watch an expert at work!

Wow, just seeing the internals and only knowing its electrical pulses I now know exactly how this engine works! Very cool.

I love how it sounds like an old Biplane starting up... Just love it!

Believe me, this guy has the video of highest quality ❤️❤️❤️😍

Fun stuff. I was particularly fascinated by the way the whole crankcase flexed as this thing ran. Cool hobby you've got yourself there.

Correction: 8:04 Maximum RPM is shown as 1,808, but the detector is reading the blades hit, which it reads as 2 per each roatation as there are 2 blades for the propellor. So the actual RPM is 904. May be the detector has a setting, where it auto corrects for this issue, if so let me know @Maker B. Thanks, I really enjoyed watching the video.

I am actually impressed when i saw part 1 but I mostly enjoyed watching part 2

Good stuff. I went into a bar in Yuma, Arizona earlier this year. On the wall, they had a wooden sculpture. Customers asked what it was and no one that worked there knew. The barmaid asked me if I knew. I did. It was a wooden sculpture of a WWI airplane radial engine. A beautiful thing to behold. Never seen another one like it.

I always wondered how radial airplane engines worked. Thank you for the very well presented video.

This video is also beautifully lit and filmed with great care. Impeccable work.

That is so cool. At idle it has the same lopping sound that a real Gas Powered Radial Engine has.

Thing is straightforward art piece of mechanical engineering

What a surprise the Shigley!! Magnificent book for mechanical design and widely used in all engineering schools in the world ...Good job

This is absolutely gorgeous. I love to build things. The meticulous detail, and the cleanliness on this is outstanding. Very impressive.

Wauw. Even the starting sounded like a full scale one.

Thank you! I have always wanted to know how a radial engine works. Amazing!

Lovely work, both the motor and the video editing. First class.

I've always wondered how radial engines worked. Now that I can see how. It's awesome. Really makes you appreciate the old aircraft that flew using them

I enjoyed every second of this video!! I've seen the model combustion engines in action as a child in the model planes my father build. Love this!

Fantastic work man, looks great. I want to see it in a plane so badly.

Excellent craftsmanship. I learned today that all radial petrol engines have odd numbered cylinders

Beautifully machined. I wouldn’t be able to resist the temptation to fit it to a model Corsair

I'm disappointed the engine didn't drag the table across the room and fly out the window.

That’s the most beautiful electric motor I’ve seen.

Well done, sound also cool! World needs more radial solenoid engine! 🙂 Keep them coming!

PS: awesome skills, really liked the Ali cover you did first but cool to see the guts at work, cheers.

Best thing from KZfaq recommendations so far!

Nice Job kid! I always enjoy your builds

Your first acrylic crank cover looked amazing, when you were turning it over, looked like the Bussard collector on the original enterprise!

A true stunning work of machine art! Can’t imagine what those “thumb-downers” were. thinking...

This is so beautiful! Instant sub!

This is great! Can’t believe there’s not a full scale one in operation out there in your garage to go on a real airplane! Pretty much a zero emissions one! Keep up the great works, wish I had the time to bring my creations to life too! The coffee cool 😎 at the end was a nice touch! Congrats!

50 years ago I made one of those as a project in 8th grade electricity class. Much cruder of course, and only one cylinder. (Modeled more like my store-bought steam engine that burned pellets under a boiler.) Wound the solenoid by hand. Crank shaft was a bent piece of clothes hanger. Flywheel was a steel coffee can lid. A cam on the shaft pushed copper strips together firing the solenoid from a big square 6 volt Ray-o-vac lantern battery. Nobody had ever seen anything like it. Maybe 600 rpm, way too fast to count. Wow, these videos brought that memory back, and the challenge of cobbling that thing together from garage scraps.

That is an incredible beautiful peace of technology ❤️

Fantastic editing and video quality

3:24 "Starting Up" Age of Z Origins ad: *WARNING*

You got a great engine, I really liked it, I will put a like for your efforts

An electric motor that sounds like a radial gas engine, how awesome is that!!!!!

ㅋㅋㅋㅋ커피 식히는 용도 였군요~ 너무 아름다운 엔진이네요 감탄하고 갑니다

what puzzles me - why are putting so many people their thumb down? I guess those are the ones who haven´t got a clue how this motor works nor how much skill it takes to construct and fabricate it. Congrats - excellent work!

I don't often make comments on videos but I must compliment your engineering expertise, fantastic, thank you for sharing..

A few hall-efect sensors, small magnet, some electronics to control the switching... Very nice project!

That thing is ridiculouly awesome. I still want a large one but that would be super expensive

Thank you for sharing, beautiful machine!

That's a very nice rotary engined fan you built there, great work no seriously great work, this is how you take model airplanes to a whole new level.

That is by far the coolest desk fan I've ever seen. I might even copy it! Gotta love the way the EM fields flex all the coil wires. What did you drive it with? Please tell me you went old school with a 4017 and 555 and not an arduino!

Proposed changes to make it look even better. 1. Change the acrylic's cross section (AT the ends) from square to round, have the bolts be inside.That way you can still look inside and aesthetically looks better. 2. Under the brass cylinders, make a spacer (from whatever thin gauge material you have that's stout enough) that has two holes, enough for you to pass the wires through and neaten the whole aspect. 3. Hollow the stand and make a star shaped receiver for the wires. Pass them though and put the whole engine on a bigger base that allows you to house the electronic bits, switch, pot et cetera. 4. profit.

This was really cool! Thank you.

Great job! I also need such souvenirs. Thanks for the video, I will try to assemble this model as well. )

That feel when your coffee is too hot so you build a plane to cool it off

I wanna see him make a whole airplane at that scale with really scaled doen plain parts

Congratulations. Wonderfull job!

I hope you are capturing that back emf man!!

This is 'Beyond' Bad ass. I'm speechless.

Looks like a dancing spider in slow motion 😂 But its pretty cool

Really a great job .WONDERFUL

This is amazing. Great job, also with the tiny 4-stroke engine

Would like to hear more about the power source.

7:20 When you try to build the LEGO City rescue helicopter to save the man in the river but you made the propellor too strong

It's gorgeous! I love the sound of solenoid motors. I want one in an electric car or bike.

For an electric engine (something i never thought i would say as an aircraft mechanic)This looks almost kind of practical! You have a true mast-art rod & counterweight assembly on that crankshaft! So frigging cool! Would the induction on those rods heat them up too much to be usefull if this was more life- sized?

DUDE!!!!!!! You even got the WASP engine rumble when you spin it over to start up!!!! In the words of Montgomery Burns... EXCCCEEEELLLLEEENNNTTT!!! I know it's a LOT of work, but the curiosity in me would love to see a double wasp, with a tri or quad blade prop, housed in a gullwing fighter plane model, flying!!! haha Yeah yeah a lot to ask, but hey... if you're going to ask why not ask for it all!! Any idea how much total construction time you have in this? Beautiful work and excellent vid work with it!!! Keep it up! What's next?!?! /evil grin

Incredible. At some point we could see a vibration mode due to the sampling rate of the camera being nearly exactly a inverse multiple of the frequency of that mode

Fantastic work... A thing of beauty without doubt.. Good job. How can anyone put a dislike on this video is beyond me.... SMH

Just absolutely a thing of complete beauty.

Its cool how the technology used in such a motor is also used to make speakers(coils) and other stuff.

Waiting to see pretty big RC airplane with this on it's front

That is Amazing Bro. God Dame it. That Sounds quite Good

I just loved it!! Awesome👍👏😊

What sis you use for lubrication for the internals of the motor... you might have shown in your last video about making it but I don't remember... Thanks, great videos...

와~ 저게 9기통 엔진이군요~ 대단하네요~ ㅎ

Thank you for this video. I enjoyed it so much I subscribed so I can find videos.

I'm impressed with the lath you built it with, pretty awesome. Now you need to put that in a remote control airplane

* sees the domed acrylic front * Yeaa ... That's gonna be a magnifying effect ... x)

I think the term ridiculously awesome very proper for this toy, a term from one of the comments!

Great build very impressed with the that mate , nice 🤙🤙🤙😊

Excellent work!

Best coffee cooler ever ☺️🙏

덕분에 기계공학과 엔진에 대해 관심이 많아졌습니다 ^ㅁ^

I thought your flat 4 cylinder was amazing - I was wrong! And you're a comedian too!!

Honestly I admire you so much

ONE THING MORE : YOU MUST TO ADD OIL INSIDE THE ENGINE to reduction the friction and sond 🥰👍

Sry if this was already said, but I think you could move the propeller a bit higher from the table edge so you can get full performance

On the last video I commented on adding a clear plate to the front to see inside. Thankyou sir

Now to see it in a flying RC plane. :) Awesome motor.

I'm curious about the acrylic cylinders you teased two videos ago. Might be much quieter and more efficient. Love the channel!

Me: my motor broke, I got to buy another one . Maker b: I think I have all the materials.

Very nice work and craftsmanship