Homemade DOUBLE GX200cc ENGINES !? 400cc 20hp

Рет қаралды 2,895,568

Күн бұрын

Пікірлер: 748

@christiantrab6160 5 ай бұрын

Great job! On two 4 stroke engines, you could have timed the pistons, so they are both in tdc at the same time, and one fires and the other is in between exhaust and intake stroke, then the next time they are in tdc, the other will fire and opposite. Right now it is an oddfire engine, where you have uneven gaps between the fires - but I like it! :-)

@platyperrin 5 ай бұрын

Would that vibrate more than having them balance each other? Genuine question, i really dont know

@christiantrab6160 5 ай бұрын

@@platyperrin Good question, I don´t know really. But I have been tinkering with motorcycles many years, I know that a lot of the 2 cylinders are twin as they are called, where the pistons move side by side, so that the combustion strokes are one hole rotation from each other to make them run smooth. Anyway, it works :-)

@DDC59805 7 ай бұрын

Odlicna stvar, eeee sad na to staviti turbinu :D

@benjamincresswell3713 7 ай бұрын

When I was 14 a younger friend asked me to show him how to rebuild a small engine. So we got 2 Briggs and Stratton 3hp engines and pulled them apart. He did one, and I did the other. We did not bore them, just new piston rings, gaskets, spark plugs and cleaned everything up real nice. When done they both ran. Then I had 2 little 3hp engines that I didn't know what to do with. I had a Go-Kart, but it had a 5hp Briggs on it, so 1 puny 3hp did not interest me. Then I thought about combining them. I pulled the cranks back out and took them to school and in machine shop I threaded the outside of the pilot shaft for the recoil on one and inside the pto end on the other so the two crankshafts screwed together. I made up a common manifold and braised them together with something like Fonson or Phonson. ( I can't remember what it was, but it was not braising rod) When I got all done it worked and I really enjoyed the sound of a 2 cylinder engine on my Go-Kart. But, I got a lot of criticism for not timing the pistons. I had simply screwed the two engines together and wherever they were when it got tight was it. Some said the timing should have been so close that one coil could fire both for the most hp. Some said the two fought each other and it made far less than one by itself. Well, I had ridden my Go-Kart with a 5hp Briggs on it plenty, so I knew how much power that had, and I could dispel their criticism because my 2 engine Go-Kart had a lot more power than that single 5hp did. What do they say about proof is in the pudding? I had a lot of pudding time with my 5hp and this double engine had a lot more pudding. Also Too, I wonder: Did the engine in this video sound like an old John Deere B engine? I had a 2 cylinder engine on a two wheel walk behind tractor called a Standard Twin. BOTH PISTONS WENT UP AND DOWN AT THE SAME TIME TOGETHER. They fired alternately. It sounded perfect. I have had engineers tell me it couldn't have or it would vibrate itself apart. Well, somebody forgot to tell The Standard Engine Company of Minneapolis Minn. or just never bothered. Because they made a lot of them from the1930's to the 1950's and they didn't vibrate at all when running. John Deere I have read thought it would be too hard to balance their 2 cylinder engine if they had both pistons going up and down together at the same time firing alternately, so they did like the guy in this video. With the John Deere one piston fired at TDC while the other piston was at BDC so there were two power pulses 90°apart, then a long lag of 630°? ( something like that, do the math I may not have it right) until the first one hit again. What we hear at idle speed is the 1st one, it has to bring the engine speed back up from the long lag and pumping losses, and that makes the 2nd one inferior in sound, which is where they got the name "Johnny Popper.' Until the engine worked hard enough to have both power pulses working hard, to me, the John Deere B always sounded like it was misfiring. Hey, that was a long time ago and I'm gettin a headache from trying to remember it. ben/ michigan

@МилошБрат 7 ай бұрын

Svaka cast! Mislim da je mogao jedan prekidac da gasi oba motora, samo ih povezi zajedno.

@orginyigam732 7 ай бұрын

How is it even possible.... Amazing.

@FrustratedBaboon 7 ай бұрын

People stop comments of criticism of his work. He busted a theory every one of us had as a child growing up. I used to think if I could connect four of these I could make a car etc.. He just made a video to show it.

@hankcuccina5260 7 ай бұрын

Don't forget his brilliant editing.

@liudon676 7 ай бұрын

The ignition switches can be integrated as single one by changing the wirings. Great job!

@W3c16B 7 ай бұрын

I would try two carburetters instead and you need to adjust them 100% precisely. I don't know where to get it, but many many years ago I tried to adjust doubble caburators using a vaccum measuring system, on Audi 80, on the fly on a highway, we meassured the vaccum at 120km/h because they didnt work even at that speed.. In short terms we drove 120Kmh, notiched the vaccum differiencies and stopped at nexe haigway exit, adjusted, drove again.. VERY interresting how a very small difference, could give a huge result in engine performance. We adjusted the nozzels with very small round metal files. If the engines are not running at 100% precise torch, one engine will have to use power to turn the other. It's difficult to explain, but if you think about it it actually logical, IF you use a single caburetter, the distance to each cylinder must be 100% the same, polish the tubes on the inside as mush as you can, and the same goes for the exhaust system ( maybe two exhaust systems are better?) if not same lenght, one cylinder will sort of block the other cylinders outlet a little. Finally you could try to adjust the angle between them, eventually 45 degrees, and adjust the crank so it "kooks" like a Harley? just for fun :)... or buy a 400cc engine instead hahaha

@facereader99 6 ай бұрын

Wow! That is a lot of work. Thanks to your ingenuity and hard work!

@brenathedadal9929 6 ай бұрын

Thanks verymuch for mechanic engine study.. success always Mr...

@tkmad7470 6 ай бұрын

Fun project! An elastomeric shaft coupler might make life a little easier on the engines as it dampens the impulses a bit.

@honeybadgeractual5734 7 ай бұрын

You should convert this to a draw through HCCI style engine, and use water injection just before the intake port where each case pulses it's own or each other's fuel pulse pumps, you may want to make sure the pumps will handle methanol or ethanol. Now you could use a butterfly as a throttle, and set it up to inject a small ethanol (vodka, 40% ethanol) boost each cycle. Homogenous charge carburetor runs better for a twin cyl than your carb, and the ethanol aka vodka injection system helps keep the engine clean, keep from overheating, and allows it to run very lean with less risk of issues, which is the main issue with HCCI carburetion. Could boost your low end torque and horse power higher, certainly will boost fuel economy.

@support2587 6 ай бұрын

Finally a way to max out my Harbor Freight wood chipper! Seriously, nice work.

@jamsvaganza5622 6 ай бұрын

Begitu banyak yang dipertaruhkan saat dua mesin dijadikan satu, tapi anda berhasil melakukannya, luar biasa👍👍🔥🔥

@mazdamaniac4643 7 ай бұрын

Spark plugs with multiple electrodes doesn't make more spark, it forces the ignition coil to work harder than it should because it's trying to drive two spark 'plugs' from one coil output. You end up with either multiple weak sparks per plug, or the spark becomes unstable and ignores one electrode completely at random. Just use single plugs for a strong consistent spark. You may also want to think about timing the crankshafts so they work together, therefore each engine fires 360-degrees apart. It'll smooth out the fueling through the carburettor. That'll result in more consistent firing, less vibration from a more balanced power delivery, smoother overall torque...all of which is ultimately more reliable and lasting fun.

@gordononkyo2713 4 ай бұрын

I was hoping to see a solution for two motors combined when needed and single when only halve power is required. This would increase efficiency very much. Maybe three motors could combined too in a usefull way part time clutched together.

@MetalStrength- 7 ай бұрын

Now we're talking, perfect job man, keep going ❤

@philipjonathanmanoharan445 4 ай бұрын

Very good sir. For demonstration please clamp the engine base plate to the work table by using a C-clamp. You are a genius.❤

@damnyiffers 7 ай бұрын

Hope you've staggered the ignition strokes. One engine needs to be exhausting while one is fueling or your gonna have one engine taxing the other

@Neoscae 28 күн бұрын

I am ver impressed , I honestly though it will not work since the length of the gasoline feed was to long, now I learn something new , thanks !!!

@lise1255 7 ай бұрын

Surprisingly great sound it makes 👍

@wuttichairc 4 ай бұрын

In my think, for 4 stroke engine must balance timing at TDC for each engine but one at Comparison stroke and other one at Exhaust stroke

@disintegration83 4 ай бұрын

Exactly... Like a Fiat 500 / 126

@YSLee-xg8eh 7 ай бұрын

Your dexterity is amazing.

@VanillaGorilla145 6 ай бұрын

Your level of craftsmanship is incredible you make me want to get out in the shed

@foxwhiskey 7 ай бұрын

The whole building-process looks really very accurate. Congrats !😊 great job, nice vid.

@ewanbaxter9199 4 ай бұрын

Your videos are great, no language barrier and easy to follow with a sense of humour thrown in, makes for very enjoyable video

@stevaughngammon1175 4 ай бұрын

I truly loved and appreciate the engineering and look to build on soon qnd can't wait to see wat beast u make with that monster unit..

@geo2cv6tron14 7 ай бұрын

Really really cool, looking forward to seeing what such an engine will be used for 🤩👍

@JamesLuther-q6h 7 ай бұрын

Svaka cast ja bi mu stavio Hladnjak jer ima vise od 1 cilindra i sigurno ce se pregrijati

@ABT14.MF-000 7 ай бұрын

Un travail extraordinaire Vous êtes génie doctor Excellente modification Me5👍👍👍

@kikilafrite09 6 ай бұрын

Do a double carburetor setup with a turbo charger, that would be your best bet at making powa

@Rufusbully 6 ай бұрын

Masterclass! Very good bro!!! Greetings from Italy🇮🇹

@quadrant2005 7 ай бұрын

i would be interested in seing this with the GX200 electric start conversion fitted to see if it would be able to turn over the two engines, nice work...

@miguelpagansr6128 7 ай бұрын

Nicely done doctor, can't wait to see what it's going into. You're an evil genius 😂.

@Kieranzxt1 2 ай бұрын

Would be interesting to play with different crank phasing, 360 degree crank, 270 degree etc.

@andybes237 7 ай бұрын

You are such a clever young man.

@siyabulelankumane9760 4 ай бұрын

Only a technician can do that your work is a master piece a theory of an experienced engineer dream

@coreysmith2774 7 ай бұрын

My idea has always been to make an engine mounting plate for however many engines you want (2, 4, 6). Instead of physically connecting the engines, they would each be connected by chain and a centrifugal clutch to a shaft mounted to the bottom side of the engine plate with pillow block bearings. The bottom shaft would act as a crankshaft in a sense, but you could run however many engines you wanted based on the centrifugal clutches.

@hankcuccina5260 7 ай бұрын

Very clever and very entertaining.

@ncopp4358 7 ай бұрын

Where do you learn your machining skills? I would kill have equipment like that, but it's way out of my price range. And Im young/broke. Repect to the machinist out there.

@onskuponsku_11eo21 5 ай бұрын

same here

@35gilton 7 ай бұрын

The engines runs very well together!!! What is the next level.. Create an V8 engine out of single engines??? 👍

@MissRepairmanLixa 4 ай бұрын

I really like the way you decorate your office, it's so beautiful, I wish you good health, God will always bless you

@ganprottas6259 7 ай бұрын

that is super cool! looking forward to seeing what it will power! perhaps an airplane?

@vinniedurrant 6 ай бұрын

That's sounds lovely! Good job 👍

@MustafaAlemdaroglu-no5vi 7 ай бұрын

If only a turbo was added to this

@sylkelster 4 ай бұрын

Now gang 4 engines together and add fuel injection. Fuel injection might be a tad easier to implement in that configuration. I hereby challenge you! I might try it one day myself. I have machine skills, but need to polish my fab skills. Well done sir.

@rubberduck4966 7 ай бұрын

Having only one carburator you should use 360° as then the airflow is symetric to the two engines and therefore both engine-halves would produce the same ammount of power. At the moment you loose some power of the non-perfect airflow in the intake behind the carburator.

@clayhunna7357 7 ай бұрын

brilliant, well done!!

@IbisOffgridLiving 7 ай бұрын

Put it in a go kart now 😅

@horstszibulski19 7 ай бұрын

Just get a "Y" spark cable and get rid of the other coil, the piston that is at bottom dead centre gets just a waste spark, but you minimize the hassle with two sets of spark contacts etc...great job, the decision against the governor and for a bigger carb will pay out... 😉👍👍

@Polvoranca 3 ай бұрын

bravooo este señor es todo un profesional y madre mia que herramientas mas buenas tiene son el sueño de cualquier hombre qu ele guste estas cosas

@YTRYGamingTripZz 7 ай бұрын

Just going to put it out there but mounting 2 10hp motors together isn't going to push 20hp it'll probably be pushing 12-14hp at max, but Torq would be more of an advantage.

@Игорь-з1е5и 16 күн бұрын

Чëтко, эти движки очень уневерсальные, доктор маладец.

@juankisaka 7 ай бұрын

Muy buen trabajo👍🏼 Has provado de poner los dos pistones arriba y alternar los tiempos? Felicidades👏🏻👏🏻

@simonallan9941 7 ай бұрын

Maybe you should have had both pistons at the top like my Yamaha 650 twin 🤗 makes it sound like a Triumph 😮, that is one exhaust and one compression stroke.

@victorriceroni8455 7 ай бұрын

That is sweet. Some of the best fab on youtube.

@stephen3727 6 ай бұрын

Great job for better than most people could ever think about doing

@leomenchey3726 6 ай бұрын

That was very cool I liked the build I would have put electric starter on the one and then I will use a Honda Key dignition but wire the kill into both engines so you didn't have to do the stop button twice

@jaszvjoroh2077 7 ай бұрын

It was brilliant.. bravo 👏

@AidenRisk 3 ай бұрын

I have questions, is the secondary flywheel necessary? could you just modify the female coupler to fit the second engine and use only one flywheel with opposing magnets for spark? Maybe use one for a two cylinder? I’m thinking, if you time it so that the engines are on different strokes and the magnets opposite, you could get away with using just one flywheel, I think you could get some more high end power, a more responsive engine and save some weight by doing so

@SteveTheCanadian 7 ай бұрын

This is amazing! Well done

@chrisosti 6 ай бұрын

I salute you! You, sir, are an absolute GENIUS!!! Now, you must follow the inventors rule...if one is good...two are better...if two are better...FOUR WILL KICK ASS!!! Get to it sir!

@TrungTheMaker 6 ай бұрын

you should totally build a double wide mini bike

@itsziya2969 7 ай бұрын

Cool projekt, well done. But can you pls turbo charge this engine

@goranilic183 7 ай бұрын

Bravo majstore veoma mocno zvuci tvoj duo motor!😂 Imam jedno pitanje kakvo izkustvo imas sa Einhell tp-cd 18/50 li-i baterijska srafilica, uzeo sam sebi jednu za kucne potrebe, pozdrav!

@StarDust-zo8gd 7 ай бұрын

Za kućne potrebe ili neke hobi stvari može proći, baterije im nisu nešto na kvaliteti..ali to je to..hobi alat.

@surfkite1622 7 ай бұрын

We also manufactured general-purpose engines for 2-wheeled bikes and 4-wheeled vehicles, such as GX200cc ENGINES.

@SiempreConTrasto 5 ай бұрын

You may now play a bit with crankpins angle offset. And make a 270 deg offset just like in new motorcycles of Yamaha.

@lauriperamaki5354 6 ай бұрын

Amazing. With you skill you could make something even more incredible

@thorstenschreier7891 7 ай бұрын

Nice work.Have the same engine at home.Very interesting to me.

@massimofusillo 7 ай бұрын

È fantastico vedere i tuoi video grande Doc👍💪💪💪

@TheOriginalAndysGarage 6 ай бұрын

I can see your welding skills are about as good as mine

@ari_setyo.86 7 ай бұрын

Getarannya seperti mesin harley😂👌🏻👍🏻

@benskai2475akurfishing 6 ай бұрын

Very genius, senior. I like your brilliant idea

@sindo7672 6 ай бұрын

one of the most bad ass inline twins ever! sounds crazy

@PPG_Kielce 13 күн бұрын

bro, I'm giving you a challenge: build a paramotor with this engine.

@qubrochanel1755 6 ай бұрын

Top markotop masse.. buat aku aja kwk kwk

@propelerMlbb 6 ай бұрын

bjir

@denda88 6 ай бұрын

I'm from Indonesia. Very impressed to see your ability to create

@mateuszdomaszynski5624 7 ай бұрын

You did a great job, but you would need a tig for these tubes

@DaveWLeech 7 ай бұрын

absolutely awesome job.. now i have a project to do myself,,instant subscibed also . appreciate the posting. and ill go through your channel and check out other projects also . thanx again

@ElmetBrown 7 ай бұрын

The idea is good, but how long do you think the front crankshaft will withstand twice the load under load?

@tiborgarage 7 ай бұрын

Brutalno extra posao svaka čast e sad to treba stavit na neki karting

@HighTech.360 7 ай бұрын

mass production machine, Fascinating! video!

@aklana96 7 ай бұрын

Accurate number 99 top...thumbs up 100% cool my boss...extraordinary great

@garysweetland32 6 ай бұрын

You would get a smoother and more even firing order if you had both pistons at the top at the same time. So ones firing while the other is on the overlap.

@vinniedurrant 6 ай бұрын

I'm not sure about that tbh, the pistons need a counter balance otherwise that'll jump around like a brick in a washing machine.

@alientiger21 6 ай бұрын

That would be the exact opposite of smooth. The engines should already be mostly balanced so any imperfection in the balancing would be essentially doubled.

@yuyundwiyani8565 5 ай бұрын

😅 i saw full video Great job bro Great bengkel bro Komplit bengkelnya Keren👍👍👍

@elmarko9051 7 ай бұрын

Cranks are designed to carry power, among other things...would there be an issues with too much power snapping the crank if the motors are too heavily loaded?

@quietprolink5322 5 ай бұрын

Awesome entertainment. I am not fully equip neither tools or knowledge but have basic understanding. Very satisfying to watch. Great work on VDO editing and the hands on portion .