Il primo motore ha il tendicatena della distribuzzione a destra il secondo girando al contrario dovrebbe averlo a sinistra e stato bravo perché il secondo motore gira al contrario quindi ha dovuto pensare al camme e all'accensione . Non è stato bravo alle lavorazioni alle macchine utensili ma a come far andare il secondo motore con una rotazzione contraria . Se avesse fatto girare i 2 motori allo stesso senso con una catena oppure con un rinvio sarebbe stato più semplice . Quindi complimenti al meccanico

id love to see little honda gx25 - 25cc engines put into an inline 4 configuration for an inline 4 100cc

Do it with puch 2 strokes instead. Might be more easy, as you do not have valves. I suggest puch, yamaha or honda cylinders.

Since It's air cooled and the second cylinder sits behind the first one it will probably suffer overheating though. Not enough air-flow for the second cylinder I fear.

@@EbonyPope doesnt have to be made from air cooled honda type engines... yes. thats the issue they do have. rear cylinder gets toasty. water cooling can fix that. comeon, the point of this channel is he straps existing engines together and they run. they arent intended for production...

What makes it adjustable

@@icanbuildit4977 A lot of things, but if you watch the video there is an adjustable distribution system.

Rotax made the bmw f800 parallel twin adjustable. It figure a third rod for vibration dampening and is set up at 360° on the f800 line but 315° on the Husqvarna nuda 900 twin. Also the two bike really works differently. The BMW have multi-plexing, the nuda not.

@@4sstylz f800 is not adjustable like engine in the video because you need replace crank and camshaft to change it from 360° to 315°. If you change those parts you can modify every pallalel twin to any offset between firing. Engine in the video is adjustable because you can change angle between cylinders without any additional parts, its just unscrewing some parts and adjusting them to work differently.

@@Dymitr_Nawrocki You're right. But the number of engine with more than 1 firing order is prety rare.

To be fair two strokes are 65% dark magic, 20% resonance and 5% of autism. Once you figure out that you never actually learned anything about the inner workings of them besides the name of the parts and surrender to impulse, you'll be able to build anything 😂

​@@jerekalevijarvinen1389still trying to find the two stroke in the video that ur talking about

@@jerekalevijarvinen1389 this is not a 2 stroke dude, clearly you have not learned even the names and parts

It's really easy just take about 7 grams of mushrooms in a machine shop and when you come back to reality something amazing will have been built 😂

​@@jerekalevijarvinen1389 It's clearly a 4 stroke...

270--Ямаха ТДМ❤

И 90, тое Маха ТДМ❤

Absolutely agreed, his engineering skills are mind boggling. He has a good set of tools & machinery at though, to work all that out & manufacture something no one else does is extraordinary. Bravo I say

he is in Vietnam and so am I, from my perspective and that of most Vietnamese people, youtube ledan is number 1 on the topic of mechanics

i see it as he is a mechanic, maybe made a few oddballs in his spare time of an evening. same deal as millyard. he was doing it well before YT... a hobby... someones like... "hey, maybe i film it next time?" no real intention of going big, just having fun doing what he does... whereas the fake "restoration" video is rehearsed and staged from every step of the way. a team of people, every shot carefully thought out... then the fake accounts clicking "like and subscribe"... how many accounts can a bot make in a day, how many upvotes and views? once you hit that magic number, go monetary, flood the recommendations list with smoothly edited rubbish content... playing the algorithm... my god YT is a strange place when you sign out of everything and erase cookies, etc... its pretty bad when you dont! ever tried filming yourself doing anything? i have lots of little things i _could_ document and post... but it never works out that way. i was modifying a fireplace i made yesterday... hmmm... fire the camera up and document? so, first step... mark this line on a pipe with this here "liquid paper" pen... it doesnt work. fine. sidetrack, document getting a tin of thinners, clearing the tip, back to marking line... battery goes flat. sigh. toss camera aside, make fireplace. done. undocumented but done. quite warm :)

Don’t forget the mandatory paint job to make ik look like new.

Like I Said...👍

and there's perfect engine balance with contra rotating crankshafts at 360degrees i think. that should improve performance.

@@martin-vv9lf That would be the 180º, with 360º they move up at the same time and then down at the same time.

@@adrian55051 The contra-rotating crankshafts can have perfect primary balance if the counter weights are increased from the single cylinder design.

@@adrian55051 With 180 degree timing the out of balance forces with the pistons halfway down the bore would add, increasing vibration. 360 degree could give perfect primary balance if the crankshaft counterweights are adjusted, as helixworld says.

360 sounds good like an English twin,

No, on flipflops.😏

yes but with H2

KIEN GIANG - VIETNAM

Some people just have excellent spatial reasoning skills and don't need any fancy CNC machines. I've ground a rod for an 0.010 over bearing by hand with a file and crocus cloth and the car is still going strong 14 years later. I'm definitely impressed by LeDan's work but it is also something I could do myself if I were determined to do so. I've been toying with the idea of making a pushrod boxer twin using aircraft engine cylinders. Would probably use Lycoming O-235 parts for a displacement of 117.5 ci, along with a blower, and put it in a drag bike to go up against Harleys.

I keep asking for more 2 stroke content. But not sure if he can see these comments

@@josephwu3136 Me too, still waiting for 2 stroke engine mods.

subs for what? not a word was spoken

pretty sure at this point the front oil pump is pumping in the wrong direction aswell it seems very few people have noticed these points im gonna say the balancing of this engine isnt great aswell we are looking at some moto gp tech with the counter rotating crank this will help with keeping the front wheel on the ground lol

​@@stuartlawson9119he did something with the oil pump and I thought he might have reversed the flow direction by changing the hole positions...however i did not check that

May be an idea for next video😊