So this means you’re making an RC tractor and miniature farm for it to work on right? 😄

Sounds like a mini top fuel dragster when cranked up

Cool engine. I like the big flywheel low speed revving!

A toast to all the shell casings that left the industry to be cast in a new roll.

The tiny amount of valve lift is hilarious I need that camshaft for my small block race truck

I think it's a gorgeous engine, I especially love the shrouded radiator and fan, as well as the centrifugal governor. Bit of a bummer that it was a rather shoddy build. Someone not mechanically inclined probably wouldn't have noticed the coolant issue and kept running that thing until the bearing surfaces were completely nuked. I kind of get it, these aren't built on a massive factory line. I imagine there aren't a lot of these built at all, so there are going to be cock-ups. That they used the wrong size o-rings, however, was a pretty big cock-up. Especially as these things aren't exactly cheap. That said, I kind of wish someone could get them to make a submarine diesel. I would be all over it like stink on poo if they did, lol...

mesmerizingly beautiful shots, thanks

A fast RC car is something we see all the time. RC Tractor Pulling thats something i would watch. Raw tork and heavy duty gearbox working to the max.

This is my favorite content to watch! Love your cinematic expertise!

One of the best sounding engines yet! seriously cool!

I really appreciate that you let us enjoy your hobby with you by showing us all these beautiful model engines.

I do enjoy the sound of these little engines. For some reason I'm imagining this engine being used to create a scale Armstead/Fordson Snow Motor screw drive tractor.

Appears to be a number of fixes required for a new, out of the box, engine. Hopefully it wasn't too expensive.

Awesome little engine(with its flaws), but what suprised me the most is that it got a centrifugal gouvener controlling the gas. I had to rewatch the video just to see it clearly. Those 2 rotating brass balls right behind the flywheel at 1:16

I dig the tractor flap on exhaust . way cool

Давно смотрю твои видео, спасибо за интересные разработки!

Fabulous video! Happy New Year

Rich man's engine, 1500 clams for that baby! Guess I'll just be watching . Great quality video 👍

Great job. It's beautiful made of mostly brass

This thing is yet the coolest engine. i love it.

I like most of your videos but this one is fantastic, one of my favorites

that`s a real nice running engine

So cute! Reminds me of a small puppy dog growling. Thanks for sharing.

Pretty close reproduction of the old Holt 75! Good catch on the cylinder sleeve o-rings! That could have been a really bad thing in short order. I'd love to see this running a small genset (i.e. a permanent magnet motor) and load it down with some lights and such. It would probably smooth right out with a load on it!😁

Nice looking engine, sounds great

You do amazing work 👏🏻👌

A beautiful machine with a great sound

Beautiful engine!

Very cool. Nice sound.

Muy buen trabajo 👍, FELIZ AÑO VENIDERO saludos

Nice build

I love this farm engine it is the coolest engine I have ever seen. It also has a great sound to it. Love your channel and content. Always waiting for the next video. ❤🇨🇦

This channel is the best.

I see an RC bulldozer in your future! And, of course, a build video to go along with it.

You find the coolest engines

What a coincidence, just bought exactly the same scale today 😀

Pretty cool. You should make an oil bath air filter for the intake.

That thing is A Beauty. Would make a Great boat Power house

For a miniature engine this thing sounds really good

She sounds GREAT at idle!

a work of art.

This needs to be made into a mini tractor, and @Luke Towan should build an environment for it to work in!

These are so cool!!! I wonder what one would sound like with a "muffler"?

This is a Jianzhong Dong engine, and Jin is an excellent engineer. However, I haven't bought this engine, as it is very expensive and has been problematic with water leaks from the cylinder liners. He is selling improved liners, but should be providing them to previous buyers of this engine for free.

Johnny please make a tractor for this engine. Would love to see the one like they have that do tractor pull competitons. 😂

I love watching all your videos you're very talented the V8 supercharger superchargers trying to compress the air in the wrong direction it should spend around to the outside of the case and then as the blades interact with each other it forces the air down to stay in that chamber if they spend to the inside a lot of the boost runs around the outside of it rotors back to the carburetor side and the boost will be more consistent keep up the awesome job love them all

Tnx for your video i hope one day buy one of them...

I'd love to see all of this little engines on a Dyno to see how they compare.

nice engine.

Looks beautiful

Nice engine.

At 3:32 you can see that the water pump belt is crossed. I looked on the linked website to buy, and it isn't crossed. Maybe that had something to do with the lack of coolant flow? Love your vids!

Man I would love to see it put under some load and see how well the governor works

Luvely job. I can even smell the sweet exhaust fumes.

Dope AF. How's the timing for ignition handled? Is there a crank sensor?

I once saw a similar engine in an rc hot rod car that would be a cool project for you

You have to build a Tank around it, it perfectly sounds and performs for it 😮

Those little engines are so neat. I wish those kits weren't so expensive though. As a tinkerer, maker, and mechanically minded person, I think it would be super fun to get a big box of parts and put together an engine model like that. I would totally hook up a little generator and a string of LED lights or something just to make it do something and be pretty also. If you ever have any kits you want to get rid of, I'm right over here in Southwest Washington haha.

You sir... have the COOLEST toys and tools lol. Now you need to make an RC tractor. Lol

This is what's going to power my future hybrid car, based on the trajectory of current events

Very cool, now it just needs an extra bank of cylinders! 😉

Sounds sweet

I have never clicked on a notification this fast before

My crank case covers didn’t seal at all so I used a thin piece or rubbed gasket to seal it up to hold a little oil in the crank case but it runs great

If i could get one of these to fit in one of my 1/14 semi, i'd build a hell of a truck.

I'm not 100% positive, but I believe the oil leak is standard on the full size model also. 😅

I've never seen anything more beautiful! I would really like something like that! unfortunately far too expensive for me! My grandfather was a farmer in Laussa, Austria, and he had a machine like this, but of course it was big. nice greetings from Österreich

I kind of want to see a hydrostatic transmission at this scale (as seen on late 1900s cub cadet garden tractors)

01:05: Is it absolutely necessary to add oil to the fuel if the engine has an oil pan with lubricating oil? 😊

This is cool just wish it could be turned into a diesel or there were a diesel version. I remember there was a way to turn the nitro 2 strokes into a diesel with a fuel that had more than just diesel in it to help it burn with less compression.

it's amazing how many engineers dont understand that o-rings need to squash. the idea is that it's a round cross section going into a square profile and the ring squashes into the angled corners. I've seen engineers cut a 3mm chanel 3mm deep because the o-ring was 3mm.

You need a mini dyno. I'd love to see the numbers on this beauty.

Did you replace the rings in all the cylinders or just the one?

What a beauty 👌🏻😎

Batteries to work. Hmmm. Try fitting a magneto? Dynamo? Does it have spare ooomph? At that price, & that level of QC, I won't be going for one. Nice vid, thanks for sharing.

Even has the sould of a Holt

God that's a beautiful piece of engineering! Is it a kit? If so what it's its name please? Any information would be appreciated. Many thanks

This things needs to be put into an RX7 drift car model. It has a very “rotary” type sound

So cool! Would be even cooler is you made it into a rc crawler or a towing rc tractor cause why not🤷

No tractor sounds like this 😁👍

Pretty color

Yeah a new video !

Love the video , also what is the name of the song playing at the end of the video ? 😎👌🏼

So good ii boss 👍👍

Do you have a link where you got the O-rings from? Is 19mm the outer or the inner diameter? I have exactly the same problem with my Holt H75. After each run, most of the cooling liquid dissapears into the sump.

Good evening Johnny q 90. I have a small four stroke engine. M 16 is in question. I am interested in how much oil should be put in the oil pan if the ratio is 4%. Should you use oil for two-stroke engines or oil for four-stroke engines? I usually put 1 milliliter of four-stroke engine oil in the oil tank and make a two-stroke mixture according to the ratio that I put in the tank.

My friend has a real version of this engine along with tank engines a jet powered riding mower Etc I can't wait to show him this video

Cool, but why did you use 2stroke oil in a 4stroke engine?

Every video we get closer to a diesel powered mini rock crawler.

Hi Johnny, I need micro electric generator for my drone. Which engine should I choose?

it would be really cool to build a small hydraulic pump and then built a scale hydraulic log splitter!

Would love to see a 5 cylinder!

Johnnyq90. What is your opinion of that engine? It’s a toss up between the gn-n100 or the h75. Would love both but can’t afford both. Trying to get the best for my buck that will last me. Thanks for your wonderful videos! Can’t wait to see what you do with it!

Please make a compilation of max rpms of all your engines.

"Memmeh, I need it."

Where can I get the oring ?Also is 19mm inside diameter ?

My God, the sweet one is the little engine 😋😋

Would love to see a radial. 10 or 12 cyl.

Do you own a Flir camera? Sometimes I think it would be cool to see where these tiny engines are storing the most heat.

Awesome.