Four Strokes Moves Your Body, Two Strokes Moves Your Soul.....

I liked the crankcase case compression ratio explanation never thought of that!

I love the 2 stroke in dirt bikes, snowmobiles and jet skies.. There is nothing better in these applications

@awesomeproducts1582

15 күн бұрын

For sure, and people still wanna argue that 4 strokes are better 😂than

@ct1762

8 күн бұрын

Outboards are absolutely awesome in 2 stroke configuration as well.

@paulsawczyc5019

3 күн бұрын

@@awesomeproducts1582 It's the noise and oil/fuel mixing that people don't like - plus smoke.

The most humble face reveal without asking for likes :) liked

@cheesebusiness

Ай бұрын

Where?

I haven't found any video explaining this much details about 2 stroke engines... everything is there.. all the secrets behind I hv learned through this... pls keep up ur work... Thanks..

Fun fact: There has been (at least one I know of) experimental engine that used electronically/hydraulically controlled poppet valves and would work as either 2-stroke or 4-stroke depending on the load. 2-stroke under high load for power, 4-stroke under low load for fuel efficiency.

Top 5 two stroke engines 1. All 2. Of 3. Them 4. Are 5. Sick

@Akeirbuah

15 күн бұрын

2 stroke go braaaap

@kevinm.n.5158

12 күн бұрын

Dang I hope they get better

Thank you so much for such a great video! I'm a two stroke freak and I waited so song for this video 😁 Could you make a video about heavy duty engines and its durability? I would be greatful 🥰

That has to be the best explanation on a two stroke engine that I have seen!!!

@remreiniger

18 күн бұрын

Fr

Great video really explains it all so well.

FYI: Must mix the gas and oil. 2 stroke engine oil mandatory. The motor is louder. Just the right motor for a dirt bike. Climb that hill. Have fun on an open field. Yamaha said it is all right. Enduro!

Thank you. I didn't understand how important the exhaust/expansion chamber was on a stroke engine but you explain it well.

@paulsawczyc5019

3 күн бұрын

Yeah - it's almost kinda like a pump.

Your videos are the type of videos I didnt know I needed, this stuff is really cool. Please continue!!!!

Good update keep it up the good work 👍👍

thanks bro this is perfect keep it up and keep us updated

@repairman22

Ай бұрын

Thank you!

This is an excellent video. Thanks for taking the time to make it. I found it very informative and I'm looking forward to watching more of your stuff. 👍

Very well explained man! Helping to realy understand this type of engine!🎉

Great video. It would be cool to see images of the actual parts like reed valves etc in the video.

Hey, love your videos! I teach equipment operators for a trade school. Do you mind if I share some with my students and credit you? Some exposure.

@repairman22

Ай бұрын

Sure. No problem.

Good animation, covers it mostly. A few points missed but nothing major.

@pauloconnor7951

Ай бұрын

Yeah not too shabby !. Where in Au are you ?

@repairman22

Ай бұрын

Hi. Tell me those points so I add them in other video. Thank you!

@AuMechanic

Ай бұрын

@@pauloconnor7951 In Melbourne, Sthn Burbs, grew up here.

@AuMechanic

Ай бұрын

@@repairman22 A bit too lengthy for the comment section. I do 2T vids that go down the rabbit hole on each topic so maybe look over those if you like. I sent some via your email. But as mentioned your vid covers the basics fairly well.

Great video Thankyou. Subbed up

The port leading from the carburetor to the crankcase is the intake port. The port leading from the crankcase to the cylinder is called the transfer port. The transfer port and the exhaust ports are the ones open at the same time, the exhaust and the intake ports never are. A three port engine is also called a loop charged engine. Nearly all two stroke outboard motors are reed valve engines. In my personal experience I’ve only ever seen two rotary valve two stroke engines. One was a horizontally apposed twin cylinder McCullough US Air Force surplus drone engine. The other was a 90cc Suzuki street bike. The owner told me it had no carburetor because is wasn’t on the cylinder. We found it hiding under the side cover. When we removed it we could see the rotor through the intake port, and could expose the rotor port by rotating the crank.

@yiorgos272

11 күн бұрын

Rotax 2 stroke engines used in microlights (jet-skis too?) have rotary intake valves. Also, model airplane engines typically have hollow crankshafts that incorporate rotary valves

Perfect video

Glad you say 2 stroke and not 2 cycle.

GR8T animation! See, this is what the Interwebs are acutally for You R the "Two Stroke Engine Whisperer"

Don't forget about if/when the float needle sticks open and floods the crankcase with gas and then you can't get it to start for days because of it. Or when the crankshaft seals wear out and you can't get it to start for days because of it. Or what about when the crankshaft seals are worn-out and your trying to slow down at an intersection and the engine starts accelerating uncontrollably because of it?

@ct1762

8 күн бұрын

what are you talking about? im an outboard mechanic and have only seen 2 crank seal leaks in motors from the late 1970's on through the early 2000's have a crank seal leak. o rings and oil seals. extremely effective!

Tes vidéos sont excellentes =)

No mention of Schnuerle porting which is more effective than loop scavenging?

If the blower pump on diesel was not so expensive, it will work 100% on petrol feul injection

Love the smoke and smell tho

Forgot piston ramping case stuffing reed stuffers port shapes crank balance floating the shaft ports inside shape degrees of duration hell a fuck ton of info

There are cleaner lawn care 2t engines that leak clean air in front of the transfer ports so it's clean air 1st then a/f mixture, since the 90's-Present (RedMax: Strato-Charged). :)

@pauloconnor7951

Ай бұрын

Really ?. Who does that please ?

@Bill-sp8kb

20 күн бұрын

​@@pauloconnor7951That's irrelevant. The only things that matter, are power, reliability, and light weight.

@ct1762

8 күн бұрын

@@Bill-sp8kb i agree with that but for boats, having a DFI 2 stroke that gets 35% better fuel economy at cruise is huge! some are even better than that like an OptiMax

Why not constantly pressurize the intake? So when both intake and exhaust are open, the pressure in the intake will push all the used air out and feed fresh air in at the same time, minimizing the oil coming in, since the air doesn't need to enter the crank case. The crank case can be also modeled like on the 4 stroke engines for lubrication. I think the downside is, it will be required to use injectors. Is it a dumb idea?

Effects of port timing

Fantastic! I will come back to make questions, and more questions to develop simplified and cheaper electronic ignition (or piezo atomizer😅) and injection, with cheaper sensors and microcontrers like ESP-32, photodiodes for monitoring temperatures like EGT, and solve my problems with stability (and share with you) here in Brazil with this admirable trash tools!

My Jawa 350TS has 3 rings as a 10:1 compression ratio.

I dont understand why the otto cycle 4 stroke is the standard in almost all vehicles instead of the 2 stroke design used by detroit? 2 strokes are more efficient since you eliminate the friction coefficient of the intake and exhaust strokes that don't produce any power and two strokes produce more torque since they have more powerstrokes per crankshaft rotation. Likewise I don't get why we don't use 2 stroke opposed piston emgines like the one achates power made but they have been around long before then in WWI WWII tanks. They have a higher thermal efficiency of 55 percent or more.

Two words, Schnuerle scavenging.

You forgot 2 stroke outboard engines for boats (up to and including V-8 engines) and inboard Jet Ski watercraft's. as well as snowmobile and ultra-light aircraft engines. you also did not mention just how many 2 stroke die hard fans there are around the globe. NOTHING can compare to the lightweight horsepower that can be achieved with a highly tuned 2 stroke. and the really odd thing about those highly tuned 2 strokes, is they can also be quite fuel efficient at the same time. Also, those "heavy" rotary valves and reed valve parts that you are describing, weigh in at less than 8 ounces typically if properly designed. the "loop charged" deflector pistons were ridiculous though. they were a very poor design. and limited R.P.M. SIGNIFICANTLY.

@ct1762

8 күн бұрын

not loop charged you mean cross flow. yes they had heavy pistons and less potential as in a looper outboard, but they idled like a sewing machine and most where very quite.

Direct injection doesnt work because the bottom end runs too hot without fuel cooling. KTM have already proven that.

@ct1762

8 күн бұрын

many many outboards used DFI/Ficht/HPDI/TLDI direct injection with no problems in crankcase heat! most used a vapor tank that recirculated warm fuel by cooling it down and putting it through the crankcase. oil had a seperate pump directly to cylinder walls and crankcase, which is what really helped combined with raw water cooling

What about pistons with one piston ring arent they faster

@liloldsnoopy4279

11 күн бұрын

Must have been faster, with less friction. Older road racing bikes had 1 ring, eg Yamaha TZ 125, 250, 350, 750cc

👍👍

The animation shows the piston below the intake, but this never happens on 2 strokes

@repairman22

Ай бұрын

In any part of the video, the piston goes under the intake port.

@Not1Edit

Ай бұрын

@@repairman22 Yes, & it's wrong. The piston top never goes low enough to open the intake, it would defeat the scavenging if it did. Look at any 2 stroke, Your video is wrong!

@franckn8338

Ай бұрын

​@@Not1Editsorry, if the piston doesn't open the fresh air intake port, nothing will happened.

@Not1Edit

Ай бұрын

@@franckn8338 YOU HAVE NO CLUE HOW A 2 STROKE SINGLE CYCLE ENGINE WORKS, & IT SHOWS. INTAKE VACUUM IS CAUSED BY THE PISTON GOING UP & AWAY FROM THE INTAKE PORT WHILE COMPRESSION OF THE CHARGE THAT CAME THRU THE TRANSFERS IS ON IT'S WAY TO COMBUSTION. AS THE PISTON GOES DOWN ON THE POWER STROKE IT IS OPENING THE EXHAUST TO LET SPENT GASSES OUT. WHEN THE EXHAUST IS ALMOST GONE THE TRANFERS BEGIN TO OPEN, & SCAVENGING TAKES PLACE DUE TO THE DECENDING PISTON PRESSURIZING THE LAST INTAKE CHARGE & BLOWING IT OUT THE TRANSFERS, SWIRLING AROUND THE COMBUSTION CHAMBER & OUT THE EXHAUST BEFORE THE SOUND PULSE FROM THE EXPANSION CHAMBER HOLDS IT THERE & THE PISTON RISES & CLOSES TRANSFERS & EXHAUST PORTS AS THE PISTON COMES UP ON THE NEXT STROKE DRAWING IN THE NEXT INTAKE CHARGE FROM UNDER THE PISTON, NOT ABOVE IT. THE INTAKE IS NEVER ABOVE THE RINGS IN A 2 STROKE.

@jan-akelofgren7547

Ай бұрын

@@Not1Edit Well it happens in a 50cc engine called Huskvarna Flinta. The aftermarket crankshaft is wrong, they have increased the stroke by 2mm but only downwards, so the piston opens the intake port.

When trying to explain how a 2 stroke works, just send them over to this presentation. Very difficult to explain to people who have no idea how they work. Too much going on at the same time. 4 strokes are simpler to explain.

Pior que eu não entendi nada 😕

O

first

The four stroke revs higher than a two stroke.

Great video. Forever 2stroke

Full of shit for any given capacity most two strokes rev lower than four strokes!

@MSKarting

19 күн бұрын

no?

@Blanchy10

19 күн бұрын

@@MSKarting No what? Have a look

2 Strokes are such garbage,

@BH-ro4ly

15 күн бұрын

Nah

@bobbyblenio4571

12 күн бұрын

So is Your Existence