As an old British 50cc and 125cc motorcycle road racer from the 1960s, I really appreciate your videos. I raced in an interesting era when the 4-stroke engine had to give way to the 2-stroke’s superior horsepower. Although compared to the 4-stroke, 2-strokes were tricky to ride with their extremely narrow power band. This necessitated 50cc bikes having 12 and even 14 speed gearboxes, and a usable rev range of around just 350 revs. So it kept you pretty busy! I’m a retired British engineer, ironically living in Oslo! I’m now in my late 70’s, but still very much a 2-stroke fan. Keep up the good work. It would be fun to meet you sometime, lykke til, Michael Leary

@Fee.1

Жыл бұрын

He did a 4 cylinder video?

@tirijalito

Жыл бұрын

you sir are amazing

@Fee.1

Жыл бұрын

@@tirijalito thank you 😊

@Bustersword6piece

6 ай бұрын

oslo is not far from me, you raced here in norway?

@2StrokeFamily55

6 ай бұрын

Allahumma shalli 'alaa sayyidinaa muhammad wa'alaa aali sayyidinaa muhammad wasallim tasliima😁😊 Yok Tobat Kawan Dan Jangan Lupa Sholat Dan Sholawat😊😁😊😊😊😊

A wise man one said, “Easy isn’t worth anything”. Your an inspiration Alex! Thank you for being you!

@joshuaharrison9331

3 жыл бұрын

I wrote that on my toolbox lid inspired by Alex!

@thecrazyfarmboy

3 жыл бұрын

I'm proud to say that I got the shirt, it always helps me kick my rear into gear when I need inspiration

@RDEnduro

2 жыл бұрын

I think he meant to write something about having vision and perseverance which is what I see here..easy is worth alot. Especially when your working alone. To me anyway, I think the message he wrote was to himself stay motivated

@TheSharky666

2 жыл бұрын

gay

@2StrokeFamily55

6 ай бұрын

Allahumma shalli 'alaa sayyidinaa muhammad wa'alaa aali sayyidinaa muhammad wasallim tasliima😁😊 Yok Tobat Kawan Dan Jangan Lupa Sholat Dan Sholawat😊😁

Love the fact that you crankout videos this much faster theres been like 3 in a weeks time

@ColaFx

3 жыл бұрын

Suomi mainittu

@2STROKESTUFFING

3 жыл бұрын

😁👍

@11sjv

2 жыл бұрын

suomi mainittu

@4Y4ZATA

2 жыл бұрын

perkele

@konstarautio781

2 жыл бұрын

Suomi

i'm envious of your calmness, i'd have nuked my entire garage and gone on a 'Falling Down' style rampage...

@2STROKESTUFFING

3 жыл бұрын

Many years of practice...

@HUSKY7-1

3 жыл бұрын

Most excellent comment, chapeaux

@falco447

3 жыл бұрын

@@2STROKESTUFFING A real Buddhist!

@davidbeer

3 жыл бұрын

Kicked a hole in the garage door when I couldn't line up the long bolt to put my motorcycle engine in. It wasn't even my garage😌

@tjn1017

3 жыл бұрын

@@davidbeer My garage hae very very thin plywood doors and I hot angry pecause I fucked up a bolt that holds the head on place. So I threw 23mm wrench thru the plywood door and it hit my liltle brothers elbow who was playing on other side of the door

as someone who solders alot, i feel your pain, i have a scar on my wrist for like 12/13 years now

Yes, don't kill a project by trapping yourself in a corner.

@vnsworkshop9961

3 жыл бұрын

Normal rings,normal double porta ex and he will fly,because the main idea head is primary Reed intake and flat valve full opened intake with injection ad secondari. He forget that concept and loose time with no sense exshaust port that broke ring in a minute..

@trevinskiking2165

2 жыл бұрын

@@vnsworkshop9961 A Super high Perf 2 stroke gets by on 1 piston ring.Ask any Japanese engine manufacter.Trev New Zealand (repeat holders of the Americas Cup )

@trevinskiking2165

2 жыл бұрын

Martin...many have !.If he sticks to a Reed intake & dual long timed Ram tuned Rotary valve that with a shot of No2,That should work for him- needs to build a little dyno 1st.Cheers Trev New Zealand

@vnsworkshop9961

2 жыл бұрын

@@trevinskiking2165 of cours ring,not rings,i write wrong. My mistake. All serius performance 2 stroke are single ring.

Test.. break..learn..repeat... What a great project

Just when we think these videos can't get any better, you do it anyway. Fantastic work.

Just remember if you put a bridge in the exhaust port you need to drill holes in the piston for lubrication and cooling. Otherwise the bridge will heat up more than it should and it will snag the piston.

@guigui78340

3 жыл бұрын

i had completely forgot about this. good catch

@DerStoeppel

3 жыл бұрын

make the bridge deeper so that you can guide cooling water thru a channel in it??

@michelem.1461

3 жыл бұрын

@@DerStoeppel Not worth it

@karter9908

3 жыл бұрын

Note:. Bridge in exh should be hand- relieved back from bore by approx .004". Been doing this on kart open motors and controlled motors for decades. Works great! Zero issues. Oil holes in piston will be Much Less necessary!! * Best exh port is 3 port. Large " oval" with "well designed" side ports. Keep champhering to a minimum. Port opening must be incredibly parallel to ring!!!!!! CRG MAXTER 50mm bore on last motors developed, were fantastic, durable. Piston skirt needs to not impede feed into side fransfers. Etc Etc Etc Keep up the good work!

@jjhack3r

3 жыл бұрын

@@DerStoeppel could be higly effective but challenging to execute.

i am from the smokey mountians in north georgia usa you have great taste in music .keep up the great work thanx from round

@langora5804

3 жыл бұрын

Howdy neighbor

@foreverjim5240

3 жыл бұрын

Hey neighbors

@chuckwhitson654

3 жыл бұрын

Im from the great smokey mountains of northeast Tennessee and i agree

@bobbymccourt6794

3 жыл бұрын

Music is amazing. Any idea who’s playing it?

@JohnSmith-ws6jg

3 жыл бұрын

Who performs this music?

One can really see the even faster progress you make while working in your garage halftime 😊👍🏼

@2STROKESTUFFING

3 жыл бұрын

It's really made a difference!

@dunichtich100

3 жыл бұрын

@@2STROKESTUFFING Right! And also the video editing and even your humor is more recognizeable than before! 😊👍🏼

I'm glad you're shelving the 100% port - we all NEED that thing to sing us it's song.

Realy like your content dude, its like a childs paradise here, its so inspiring on my own projects. Keep it up!

You're a legend roughly 2000 dollars for a single cylinder that you designed thats amazing you've put so many hours into research and development I look up to that

Run a ringless piston and run nitro or alcohol / oil mix keeping piston cool just a thought. . Cylinder has to be tapered smaller at top and wider at bottom for ringless piston set up ../ \ ..

The quality of tour videos has realy skyrocketed and i love it, keep the good work up, greatings sweden

Your choice of blues music is superb

@twinshock175

3 жыл бұрын

No mention of who it is, Shazam says its Ma Lady J'ai Le, Blues No7, by Daniel D.

@maristef9773

3 жыл бұрын

@@twinshock175 thanks man, much appreciated hint!

Man i hope you saved all these exact designs via blueprints so one day you can manufacture your own serious 2 strokes✅✅🔥🧡

Lovely Video, as always! I absolutely love watching you do 2 stroke things, i am totally sure you will find a way to get the most powerful 2 stroke ever!

Awesome stuff. I have been waiting for!! Realy appreciate how things are going!!!!

Just because you're addicted to 2t oil, doesn't make it heroin >_>

@mrsnezbit2219

3 жыл бұрын

Also heroin is a trade mark so the video shoud be taken down hahah

@xeigen2

3 жыл бұрын

@@mrsnezbit2219 Bayer lost its trademark rights to Heroin under the 1919 Treaty of Versailles following the German defeat in World War I. It is no longer enforceable. I know you were joking but I found that an interesting little fact.

@MrRaggarRobban

3 жыл бұрын

No because cannabis has never killed anyone and is therefore far too dangerous to lubricate threads with......Fffffffffh....

@mrsnezbit2219

3 жыл бұрын

@@xeigen2 I didn't know that! Thank you

@MrRaggarRobban

3 жыл бұрын

@Alfred Wedmore Well if you never try you will never know I guess ;-D

Yup it's been 3 years.... It would be nice to see you get that thing out on the salt flats this summer

Your commitment is stellar, there's not many people that can keep motivated to finish a great idea. I guess that's why I keep watching I'm always full of dumb ideas, very few ever get finished.

People like you keep the 2-stroke alive, keep up the good work!!!

This has all been done before. The numbers for max port width in a ringed engine are well known. At 50cc you might try to eliminate the ring and go ABC although, the piston expansion rate would be tremendous.

@2StrokeFamily55

6 ай бұрын

Allahumma shalli 'alaa sayyidinaa muhammad wa'alaa aali sayyidinaa muhammad wasallim tasliima😁😊 Yok Tobat Kawan Dan Jangan Lupa Sholat Dan Sholawat😊😁

oh man I love this guy's work

Thank you for your perseverance. This is a wonderful journey to be witnessing 👊🏻

You work a lot for those videos man! Thanks for the explanations and everything as a machinist I know how much work goes in there and you’re doing a great job testing these things! I would probably never have tried a single port like that without at least the little bridge like you did on the new sleeve because of that weak point in the ring but it really is noce to have someone actually try it! Thanks a lot!

These videos are the best!

Try a bigger ring gap. Had similar problems with a Kart engine. After I extend the ring gap the problem was gone.

Wife thinks im dumb for how excited i get when you post new vids.. cant wait to see you on the flats with this engine..

This is great Alex, I’d forgotten about this project you were working on and it popped up on my KZread feed. The last time I seen you on here you were casting the engine. You are doing a great job. I’d love to do something like this.

Hey man, love your work. I would suggest making your cylinder sleeve out of cast iron or brass just for experimentation purposes then go with plaited aluminium later. Cheers. 👍

Sad it didnt work out as planner but your face when it broke for the second time is a verry familiair face😂

You’re a LEGEND in the Making Buddy…. Good Luck with everything, I truly love watching & learning more about how you’re getting SOOO MUCH HorsePower out of engines Sooo Small. By watching you work on these Small Engines, I’m learning more on how I can get more out of Bigger 4-Stroke Engines which I work on. I’ll see you again, next time 👍

That’s awesome! Keep at it that’s very interesting stuff there, can’t wait to see when you have the kinks out!

Hi, I needed to leave a idea for you to consider: You could taper your sleeve and have a tapered hole in your cylinder. Just like a morse cone. This will give you the opportunity to switch sleeves with ease. Clean out carbon from between the sleeve and cylinder, hampering your heat dissipation. Moreover pressing an aluminum sleeve into an aluminum cylinder will not be easy, you run the risk of damaging both parts. Jan Thiel also did this with some cylinders, I do not recall which exactly, but I guess you know his work well ;). I hope you get something out of this suggestion! Good luck! P.s. This might help with timing your sleeve as well. You can fit it, drill a hole for a pin in the top surface of the cylinder, and fit the sleeve even exactly the same every time. Downside will be that the sleeve will need to be very precise in order to get the heights of your ports to line up!

@holmes1956O

3 жыл бұрын

Heating the cylinder block and chilling the sleeve will let it fall together without any pressing necessary

@peterparker9286

3 жыл бұрын

Right on Guys for giving suggestions I only know of cast iron solid cast small blocks. I was going to suggest a diff. Composite of ring. I am outa my league a lil. Thumbs up to the producer the engineer and the star of the show.B.t.w Do not bore the hole 2 big possible ROD problem. G.L.

Cant wait to see the supercharged version of this motor.

@jjhack3r

3 жыл бұрын

I've been pondering that idea for 5 years lol bout time i see it done by someone

@LJ-fe8vb

3 жыл бұрын

Closest thing i have seen is Detroit diesel supercharged 2strokes

The more variety of design you test, the better. Good work so far!

Watching this come together is as cool as the Deathwish truck, the camaraderie is inspiring.

You deserve more sub man

Can't wait for the supercharge and Rotary valves stuff!

@2STROKESTUFFING

3 жыл бұрын

Me neither, and I realized there's suitable small roots blowers available which could be used as a start. Working on not having my builds drag out soooo long...

@jnuxca

3 жыл бұрын

@@2STROKESTUFFING Is there really stuff that small? Please when you eventually try give us more info, wanna try myself one day :D

@tonywright8294

3 жыл бұрын

You can’t super charge a two stroke .

@2STROKESTUFFING

3 жыл бұрын

@@tonywright8294 Hold my beer!

@jnuxca

3 жыл бұрын

Indeed hold the beers 😂

Huge respect for your dedication. Keep going. I'm subbed and will keep coming back to watch.

Mate your diligence is impressive. Keep up the good work.

The sneak peak looks a lot like the FST cilinder (Foekema Symmetric two-stroke)

@2STROKESTUFFING

3 жыл бұрын

Or Frits Overmars' FOS-cylinder... I've never seen anyone pull off the scavenging with this layout, hoping my brute force supercharger approach will circumvent that issue.

@andli461

3 жыл бұрын

@@2STROKESTUFFING Did not realize that there was a scavenging issue with this design. Can you evolve on that?

@2STROKESTUFFING

3 жыл бұрын

@@andli461 I've never heard about anyone getting good power out of the system. Might be cause no one has tried "properly" though. Symmetry is key.

@andli461

3 жыл бұрын

@@2STROKESTUFFING I’m a bit puzzled about that as well...since the first time I saw Frits sketches/prototypes I have really liked the idea. 👍 One thinks someone would have solved it by now. 🤔

@2STROKESTUFFING

3 жыл бұрын

@@andli461 It's harder than it seems I think. So many things that can throw the symmetry off. Uneven heat distribution, small imperfections in the transfer ducts, case turbulence etc. Such an elegant design though, and now I'm going to defile i with a supercharger....

No, no, ....thank you, for your tenacity, inventiveness and dedication.... cheers buddy ❤️

I too am an old 2 stroke racer from the 60's when we were developing fast bikes from slow street bikes. Very innovating ideas with the captured ring. I ran an exhaust port shaped something like a T. I imagine your exhaust port shape is designed that way for scavenging purposes. Also ran a dykes ring. Too much friction??? Seems a larger ring would be easier to hold with your captured ring system. Also we had a graduated chamfer on the top of the exhaust port that eased the ring in a little less abruptly. Love this two stroke stuff! Thanks.

Before I watch. Congratulations! Edit: Thankfully, the words I now live by are written on your wall. You are an amazing example of resilience. Keep going. You have a great proof of concept. All of this work is something that you and all involved should be proud of. Nothing worth doing is easy!

Fantastic Videos, really appreciate your work and it has given me ideas for my projects. One thing - you may have already thought of this - 100% exhaust can still be achieved by adding the thickness of the bridge to the dimensions of the port width = 50% each side of the bridge.... you could then have two bridges if needed.

@DerStoeppel

3 жыл бұрын

exactly!

@DerStoeppel

3 жыл бұрын

or, even more....^^

@trevinskiking2165

2 жыл бұрын

@@DerStoeppel there are those who do & the rest watch it on KZread.No offended.Trev New Zealand

@DerStoeppel

2 жыл бұрын

@@trevinskiking2165 ??eehm, sure?? and, what has that to do with anything, especially the topic? just asking, because some people comment on vids, some dont, regardless of them doing stuff or not... greetz, Stoeppel from Germany

@trevinskiking2165

2 жыл бұрын

@@DerStoeppel Just what it says, your not Autocratic too are you ? More intelligence than wot you wrote.Goodbye.Trev New Zealand

maybe do more than 100%?? something like 200° with one 10-20° bridge in the middle??

This Norwegian American loves the project. You also share my taste in music Delta Blues.

I know thicker rings aren’t great for power, but I seems like a ring double the thickness with chamfers on both sides would alleviate some problems. The ring/cylinder contact would be about the same while allowing the ring to ramp over unsupported walls.

I feel your 'Fuck It' What are your thoughts on running in two strokes? A myth?

@2STROKESTUFFING

3 жыл бұрын

Definitely a myth😁

@frankg3278

3 жыл бұрын

@@2STROKESTUFFING Why am i not totally convinced lol

@raymondo162

3 жыл бұрын

if you use a supercharger, does that mean you no longer need the crankcase to do the pumping?? does the fuel+air charge go straight in to the cylinder?

@laurean5998

3 жыл бұрын

Dude, even a 2 stroke ideling the way it should isn't even running 20% of the time, that kind of tells you what to expect ;)

@frankg3278

3 жыл бұрын

@@raymondo162 The bottom end still needs lubricating though.

It's been 6 months since I told you to add a bridge to the exhaust !

@mrbidule33

3 жыл бұрын

@Eddie Hitler Considering the name you have, you can brush your teeth with a toilet brush

@andylewis7360

3 жыл бұрын

@Eddie Hitler Forgive him, Eddie. He obviously hasn’t discovered Google yet. Or IMDB. Or comedy.....

Never give up! The exhaust so large was a gamble but you tried, now you will have the optimal solution 👌🏻 .. I await the moment that we will hear the engine spinning fast!🙌

I think a bridge may simplify many things. In racing concepts I think making an engine work is a starting point, paring it back down to make crazy power is the second step. Great wishes for the next phase, I look forward to it!

It looks like to me that they heat isn't able to get away from The Ring quick enough and eventually melts the ring

Keep working at it man. I think keeping the single bridge is key to keeping all the flow you need. Unfortunately the ring Gap has to stay up against the bridge. Excellent video I'm a two-stroke fan from the '80s.

Need more guys like you figuring stuff out in sheds Keep at it Bud

The music really suits and complements the video.

Mad skills, I wish I had seen this when I was riding 2 strokes

Loving it as always brother 🤙 enjoy and good luck!

Sad to see this struggle but I’m stoked to see you work regardless

Keep building, you are a very skilled engineer

Been waiting so long for a start video!!

I admire your tenacity!! And humbleness.

@pinned.by.wallstreetbets.761

3 жыл бұрын

Thanks•..•for•..•watching.... For•..•profitable•....•investment•...•and•....•guardians>>>>>> W•H•A•T•P•P•>> +•1•..9..•3•..4•..4•..0•..0•..3•1•..6..•7

Thanks for sharing this with us. Have you thought about harmonics breaking the ring? The shockwave coming back into the cylinder. I was wondering why it would break at that point? Twice? Could it be a defect in the hole in the ring? Maybe you can try cutting the small hole with a laser. This is very exciting to watch. I grew up with mopeds in the 1970s. All of my friends had them. I had the fastest. One guy had a quicker one because he had it two speed. But I could take him in a mile run. it could run at 52 miles an hour on flat ground. It would go over 60 down the bridge On the way to the beach. I live on the east side of Jacksonville Florida. 13 miles from Jacksonville Beach. It sounded like a bad ass chainsaw. I had a puch engine with a Jawa cylinder and piston. I made a spacer plate out of brass. I took the pedals off and had a piece of 3/4” all thread with foot pegs on it. Straight bars. Long seat Suzuki tm 75 front end. Tomos rear wheel. 17mm racing carb that faced frontward. It was fast and agile but a itch to push to get gas. I would pass school buses going to school. Everybody was like what the fuck. It wasn’t pretty but it looked cool and one day I came home and my mother had given it away. Along with my two Honda motorcycles. That sucked but my dad gave me a 1964 1/2 Ford Mustang. He told me you can’t screw on a moped. And I can tell you that it’s a pretty tight fit in the backseat of a Mustang.

I know it has to hurt to lose the full width exhaust port, but you may yet be able to come back to this idea for a visit later. Something in the back of my head is remembering pistons that were plated in a particular fashion that allowed them to be used without rings. Something about expansion and contraction rates the would match the cylinder closely enough that rings were not necessary.

love the smell of 747 in the morning. really interesting watching your development. 👍

You are firmly determinate, and it's great.

Glad to see that ear pro. I can only imagine how loud that pipe must be inside.

@tonywright8294

3 жыл бұрын

Why would he be inside the tuned pipe ?

Try a ring like a total seal design. Make a ring with an inner lip. Then use a ring that catches that lip to hold the ring in place. It has no gap but is smaller diameter so does not contact the cylinder wall. Now no uneven parts on the contact ring. Contact ring should be very light contact. Almost zero tension when cold. Ring and engine expansion when warmed up will provide proper contact. You will need to pump heated coolant through the engine to provide enough ring seal to start.

A sensible move to drop the bridgeless port idea, you have chased your tail on that for so long and nothing so far has proved reliable. Keep up the good work, Kia kaha.

Keep on going great content 👍😃💯 from Cornwall England

Awesome job Love these videos

Amazing craftsmanship

Loved the video production on this one. The colour and tone were engaging & the blues music was sheer perfection. The costuming department did a great job with your plaid shirt as it really looked great with the overall colour temperature of the video. Your past life: -child care worker- Hollywood cinematographer!

Hi great videos. Quick question what's the difference between your premature wear piston and broken ring piston? Why did you get premature wear instead of a piston ring braking?

Is the ring gap sufficient to to keep the ends from touching? If they touch the ring will be pushed in to the exhaust port.

I think the rings push opposite from the ring gap to the pivot. Hole on the ring changed to long hole or bigger. So it moves freely and won't feel stress. Hope you will be back soon. Love 2stroke.

Keep rocking brother you will get it, I know it's possible, I built a killer weedeater, still fs 76, it turns 14000 rpm, and after 2 years of me abusing it, still kicking ass 33cc I think😎

I've been waiting for this! What size/model carb are you using? You probably already mentioned it. I've learned a bunch from your videos, thanks.

Did you thought about the cooling of the bridge or you think with methanol its not a problem?

One of my big issues has been wristpin circlips popping and that piston helps here too.

Looking forward to the next 4 stroke video!

That supercharger idea is very interesting i cant wait to see that!

Keep plugging away and I will keep watching

I hope that set screw won't become an issue. I'd imagine possible bulging of the side of the piston if tightened too much or it getting loose if not tight enough... How does threadlock manage with heat?

Before you add that sleeve, why not try a standard style piston and ring to see if the port will work with a standard piston. You can always go back to the three piece piston later. Would be cheaper and quicker, just a thought. Love your videos!! Good luck..

I love this great high precision work 👏👏

Love the video, the music choice was excellent!

I would be making an ABC type of engine here..Aluminum piston,Brass liner with a tapered bore that's Chrome plated..This way you eliminate the ring altogether and can have an exhaust port as large as you like.

@albertsammut433

3 жыл бұрын

@Joseph Tutor Its been in use in model airplane engines since the 70s..Research on Google...ABC model Airplane engine design and it's all there explained for you.

I commented that it could break the piston ring and also the low pressure on the crankcase. I hope to see the engine soon on the dyno!

Would knife edging the front of the bridge help? Also, could you narrow the bridge down at the points where the piston side-loading are lowest?

I love your dedication to this build, I would not have had the patience to get this far... But I do feel like I just watched a movie where the good guy dies in the end.

@2STROKESTUFFING

3 жыл бұрын

😁 The good guy will rise again!

@robbyrob25x

3 жыл бұрын

@@2STROKESTUFFING excellent, a sequel! Keep up the great work. What about beefing up your fail point on the piston ring?

Nice job, I'm loving it. Damm for that problem about the ring, hopefully you get a cheap new cylinder!!

for the 100% bore exhaust design, have you considered a spiral piston ring design(essentially overlaping, all the way round twice)? with tapered ends tapering towards the piston on both ends during the heat expansion the ring simply slides the edge that is on top, and the edge that is on bottom towards each other but they can never meet, and it should require no locating pin(hence the tapered edges, the piston would need a deeper ring groove, and wider rings I don't quite know how to explain this idea, and I have no drawing skills so hopefully what I've said puts forth the idea correctly, I can't find anyone whos done it before or any designs like it online essentially a piston ring, but the edges keep going around another turn one under one over

Cannot wait for more future videos! Half time in the garage is gonna pay off

Worked on a competition RX2 motor in the 80's and it just chewed up apex seals at high rpm. Made the single port a "bridge-port" resulting in a crazy increase in engine life. Have no idea what the power loss was because we could not get the single port version to last long enough to get to the dyno.

How are you going to lubricate the exhaust bridge? Many two strokes I have seized because the exhaust side of the piston was not drilled below the ring land.