Probably my favourite channel in terms of reviewing and explaining anything with an engine. No bullshit titles, no stupid gimmicks, just someone passionate about their vehicles sharing with the world. You get better and better with your vocabulary with every video mate, keep up the amazing work!!!
Roger Tycholiz Honda did exactly that. They had eight gears to keep engine in its tiny power band. Walter Kaaden’s MZ two stroke 125s continued to blow them into the weeds. Kaaden understood harmonic pipe tuning and gas flow around a 2 stroke piston. He was the first to get 200bhp per litre and the first to see >30bhp from a 125.
@@rogertycholiz2218 The Honda 50 cc of 1962 was a single. The last race of the year in Japan, Honda won with a 50 cc twin. Their only 5 cylinder in the sixties were the 125 cc RC148 and RC149. Read my book "Honda's Four-Stroke Race HIstory 1954 ~ 1981".
I had in late 90' a wartburg 353 car and yes two stroke 50HP sounded like 250, no wonder this car was called as wartburgini. The sound of the engine at 130kph was incredible (only the sound, nothing else).
Two strokes depend on sonic shock waves travelling between diverging and converging cones. The piston ports open, expanding cone sucks exhaust and new charge into the exhaust header. The returning shock wave rams that gas back in before the exhaust port shuts. Peak power happens when piston speed (port open time) matches the pipe length. Small engines can rev high but the peak for a 125 cc is about 12000rpm. 250cc is slower because the speed of sound does not change and the distances inside the pipe are longer. 4 strokes have gas flows controlled by valves so they can rev higher.
Lmao i would always make the joke they had splitter buttons on their shift knobs because the stick would show 6 gears or they'd have 6 slots on those shifters lmao
Fantastic video again. The tiny strokers are fascinating.I remember Angel Nieto seemed to win all the time in the '70s on the little bikes. Morbidelli were actually a woodworking firm back in the day.
U revived olden Goldie's .those days won't come back.Two sts are agile,sharp,never say die.they gave confidence.thanks for bringing back the nostalgia.
EmeraldFX Vittuakos mua hintiks haukut, kun en ees herralle puhunut. Kyllä tiiän että viilatusta 50 voi saada ton irti mutta en kyllä tollasesta tyypistä usko että se mitään viilailee.
Have to point out that not all 2 strokes are in need of drastic rebuilds as claimed, many Vespa's and Lambretta's did tens of thousands of miles without anything more than needing a spark plug and a air filter clean
true, but a 4 stroke often goes several times more then that between rebuilds. Most people never have to rebuild a 4 stroke, but most 2 stroke owners need to rebuild theirs (granted, it's much easier rebuilding a 2 stroke)
yeahh nahh yeahh nahh all 2 strokes sound similar especially in the top range rpm, but low range rpm they can sound a bit different. it really mostly depends on the exhaust and silencer. if you were to take off the exhaust on all of those bikes.. they would almost sound the same in the top range rpm
Nice video, thanks! The RP68 shown was actually a RK67 2 cylinder as the RP68 never was run or put in a frame due to the FIM rule change limiting the number of cylinders for 50cc to 1.
Its Also Funny when Comparing newer Cars Or even Japanese 90's-00's Small Cars to Older Large American/Australian Muscle Car V8's & Big Straight 6's from 80's,90's,00's. My Car Which is a 4 Cylinder 2.0L from 1999 with Turbo Makes About 165 KW @ 3000 Rpm Until About 6000 RPM where its 140 KW @ 7800 Rpm Redline (Its Still Stock Boost @ 14psi) But Big thing is the 340 NM Peak Torque by 3500 Rpm. **Only For Americans => (Thats 220 Hp & 250 Ft-lbs.)** That is more Power & Torque than Most 5.0L V8's Up Until about 2010, Specially the Torque. My Little Thrashed 2.0L with 250,000KM (160,000 Miles) on clock Tows a 2 Tonne Boat (4,000 LBS+) Better Than Most Pre 2010 V8's (Excluding Diesels & Boosted V8's Obviously)
@@karlkukk7080 I understand that, but here in USA you can take off mirrors and install a turbo. You can even build a bike with viper or helicopter engine and drive it...
Stinkwheels one and all......but don’t we love them, I’m an original LC hooligan......I miss the two strokes more the older I get! Thanks for the video visio lad 👍👍👍
i had a 90cc twin yamaha with a 100cc top end and carbs off of a 200cc yamaha street bike. ran gas and blendzall mix for fuel. "total loss" ignition ....no weight from a flywheel used a battery to spark the points.. the engine was in a mini-enduro frame with the rear shocks removed. rigid-tail. flattracker....16,000+ rpm according to the tach. and it was a terror on the race tack. i was 12 years old going sideways, throttle wide open to the outside of the turns. no one had ever seen anything like it. and yes...i always won lol
2 Strokes are awesome. I've been driving one for the last year and intend on taking it to university whenever the weather is good enough. You just can't dislike the smell they make
Hey dude, you could do a video of the 2-strockers of the "eastern block". You know, like Jawa 350 TS, MZ 251 ETZ, Tomos APN 6 and 4... I find those bikes really interesting, especially the weird mechanical solutions of the Jawa 350 TS. Just a suggestion.
i love 2 strokes. ive had a few now, just sold a 1994 honda cr80, limiter was 14,000 RPM really fun little bike if your a small guy or girl.. felt like riding a bmx with an engine, great fun
Yes, when you have a quarter million subs (Visio does), when you offer quality educational videos full of solid information (he doies), there is no need to do click baiting. By the time I received notification of this video, there were already over 6,500 views. This channel will continue to grow because of the quality and hard work Visio puts into the production. I hope he montizes and receives a paymernt from YpouTube. That will be his reward for all the past effort and his "labor of love."
Jan, great catch and thank you. I am working halfway around the world from home base and get zoned out at times. TH-cam is a pleasant distraction as I watch the US market overnight from SE Asia. I have corrected the improper spelling.
MZ was instrumental in development of the high performance 2 stroke engine. Suzuki benefitted greatly from their experience by "hiring" a rider/developer Erbst Degner in 1961, assisting his defection from East Germany. He was instantly made into a rich westerner.
At the beginning you said that 2strokes make more power while using lower revs. Correct me if I'm wrong but I thought it was the complete opposite. 4 strokes make more torque at a lower rpm. That's why people bog out going up a hill because they weren't keeping the rpm high enough. Where as my 4 stroke can power through the lower rpm and the 2 stroke just bogs and rpm drops.
Have you seen a four-stroke to make 400 hp/litre? F1 made around 300 hp/litre and revved up to 19,000 rpm. The same goes with the MotoGP engines. they are at like 240+hp/litre and still need to rev higher than a two-stroke. Just compare the Honda NSR500 and Honda RC211V for instance. There might be some regulation limits, but two-strokes just do twice the work (one bang every revolution while a four-stroke fires once per two revolutions).
VisioRacer wasn't asking which engine type is better, they both have their pro's and cons(I own both). Was asking specifically about the low end power of a 2stroke. They are known for having non, yet your intro said they do. Which is incorrect. Also, thank you for the quick reply! Love your video's and your English is improving! Thank you from the US. P.S. all my experience is from motorcycle engines. Don't know much about F1
Paul Kirk Two strokes makes more power at the same amount of rpm, or same power at lowers revs. Because every single rev have an explosion, while it takes 2 revs to make an explosion in a four strokes (for each cylinder).
Bought a 1975 Yamaha RD350 brand new from the dealership in 10/75 for $1100 at the ripe old age of 18. Promptly rode it from San Diego to Kernville and back with nothing but a sleeping bag and a pocket of spark plugs. Fouled a lot of plugs with the altitude changes. Lots of rain on the 5 freeway. Great bike when the carbs were synched.
Yes and addictive, im 53 and was in goose pimples watching that,still braking down in the middle of nowhere on em. Burie me with my Aprilia Rs250, 96 Rep and Kdx250
My uncle drove a Kreidler 50cc 1978 and the following years in the german championship and 1979 at the grand prix at Hockenheim. I have been there at the age of 11. Great experience I will never forget. All the stars with nearly noch limits to go where you want to. I Have been in the tent of world champion Kenny Roberts Senior. Unbeleavable today. Barry Shene, Toni Mang, and as a guest the greates of all: Agostini Yes I miss the times of the great sounding machines.
I still have to repair my grandad´s Derbi Fenix (50cc) when i get a license this year. Greetings from Spain, and thank you for all your work. I know is not your style on the videos, but can you do one about the history of Eduardo Barreiros? He´s like a legend for me and for all the Galician mechanics.
Kacper B ... you go back to school learn some English and how to respect ambiente and people with the disgrace of living around your noisy nuisances . That is "what you'll say about ...
haaa le 2 temps ! quel pied ! tout y est ! l'odeur,le bruit,la puissance et les sensations! mais aussi la mort,les casses moteur et le melange huile/essence en directe a la station ! le 2 temps fait parti de toute ma jeunesse ! j'ai eu RD50,RD 125 ,DT50,DTLC125,minareli 50(cross) ,BPM125(rotax),KX250,RM125,GT125(bi cylindre!) et beaucoup de mob(103/51) ! ;)
2:48 in two strokes this valve is called the "power valve". It controls the flow out exhaust gas out of the engine, opening and closing depending upon the rpm of the engine, to improve power output throughout the rev range.
Dude, your’e research on this subject looks impressive. I just cleaned about 2kg of carbon from a ts185 exhaust. Gotta love the blue smoke. Ps, you haven’t lived till you’ve heard an Inter 2 stroke diesel.
100cc kart engines from the late 90’s were up to about 21k. Mean piston speeds were higher than F1. Needed the overrrev in direct drive/single gear classes to ensure the engine was on the pipe to punch out of the tight infield sections. But we also replaced pistons every 40mins😂. Aircooled and no clutch. Lock it up, rear wheels lock up with it. Crazy times.
I Ride a Kreidler myself. A Suzuki GN Powered bike wich doesnt have much to do with the original kreidlers exept the Design. My father had a Kreidler Florett RMC From the Late 70s and my grandfather had a regular Florett From the late 50s. Honestly to me nothing Beats a Kreidler (Florett RS). The Sound of the Van Veen is awesome
They'd probably all be from the early 1900's. The lowest revving modern bikes are probably Harley's and some large Japanese cruisers like the Yamaha XV1900 and Kawasaki VN2000.
MT-01 also have low rpm, I love seeing that bike go fast, because although u full throttled it all the way up to the red line, that bike still not screaming.
Royal Enfield made diesel motor bikes for the war, they would probably be the lowest revving. In 2005 Kawasaki made a diesel off road bike that made peak HP at 5500 but revved to a usable 1500-7000rpm.
I still ride with my fingers over the clutch to this day incase of an engine seizure , even though I’ve got a four stroke Gsxr , a habit I developed from riding and thrashing two strokes in my youth :)
I took my ducati in for a service , the only loan bike the had was an Aprillia 250 ... it took the piss out of my riding ability ... 250 miles in a day , while i was working says everything about how much fun that bike was :-)
Now do a video featuring the early Honda 50cc racers. Double overhead cams and err 22000 rpm! Shame you didn’t include the old MZ 125 in the two stroke category . The designer defected to the west, well Suzuki where he designed their race engines! But nice video
Nino Brown Yeah that's true. Is your Simson modified? I am building a fuel injected am6 engine. And I'll see what it revs up to when I finish there project. As before my ignition limited it to 13.
Ruslan yeah it's heavily modiefied, one has an 80cc reed valve engine with custom made pipes and 30mm carburator. The othe is an old Simson Star from the 60s. It has a custom made crankshaft with more travel, the Original sleeve was removed, bored out and one with more diameter was put in, also 28mm Carb and Custom pipe. Has now 87cc but is rev limited by a long pipe to 10k due to a weak gearbox and overheating issues. But has good torque. A fuel injected am6 should be killer, you got Facebook or Insta Account to follow the build?
hei there! the video is great, but still, i was watching the whole video and waited to see a TOMOS, a was a bit disappointed Tomos DM-GP; 19,5 PS at 16000 /min-1, max speed 204km/h!
This valve in the RG 150 Suzi exhaust was first used by Yamaha on their highly successful production racers. The 50 cc Bultaco's were made by the two Dutchmen Jan Thiel and Martin Mijwaart. The 50 cc Derbi shown is NOT a Nieto ridden factory bike, but a 1973 production racer, air cooled instead of water cooled, with a claimed power of 15.5 hp.
The valve you are talking about is a 'power valve'. There are different designs, but they all do the same thing and that's adjust the exhaust port height, changing the exhausts opening angle, increased duration and surface area. Takes the peakiness out of the engine and combined with a large capacity engine is an experience that should not be missed!!!
Actually the powervalve, not only does it make the power stroke longer at low rpm by lowering the exhaust port, it also retains heat inside the combustion chamber. Engine manufacturers discovered, that at certain RPM plasma appeared inside the combustion chamber. They also discovered, that the engine runs better and more efficiently when the plasma was present. This valve also helps widen the RPM range in which this plasma is present. Although the effect isn't very big, it's there. But most of the advantage from having a powervalve comes from lowering the exhaust port at low RPM and then opening it up when better gas flow is needed for high RPM.
The RG150 (and the UK's RG125F and RG125UN variants) were one cylinder from the RG250 and Aprilia RS250 engine, they share exactly the same head, barrel, power valve assembly. In a way you've covered the same engine twice here. (I've owned RG125UN, RG250VJ21 and 22, RS250 Mk 2, familiar with every last part on all those engines)
Raced a go-kart in the seventies that had an Italian built 100cc rotary valve Komet K-78 on it. Stock the engine put out 15hp at 12,000rpm. When modified it put out 25-30hp at 17,000rpm. That engine ripped and was so fast I always had to run 40lbs. heavier than the 100cc Yamahas that also ran in our class.
Probably my favourite channel in terms of reviewing and explaining anything with an engine. No bullshit titles, no stupid gimmicks, just someone passionate about their vehicles sharing with the world. You get better and better with your vocabulary with every video mate, keep up the amazing work!!!
You know it's a racing bike when the tachometer doesn't even START until 8k rpm lol
if it is running under 8k it better be parked
@@ImNotADeeJay good answer lol
Yeah, idling like crazy
50cc, 20.000rpm @ 200kmh lol..
those are strange numbers..
A Frog when you are 16 and they only allow 50cc😂😂😂
A Frog - I believe Honda in early 1960 made a 50cc OHC 4-stroke engine with 5 cylinders revving 20,000rpm.
Roger Tycholiz
Honda did exactly that. They had eight gears to keep engine in its tiny power band.
Walter Kaaden’s MZ two stroke 125s continued to blow them into the weeds. Kaaden understood harmonic pipe tuning and gas flow around a 2 stroke piston. He was the first to get 200bhp per litre and the first to see >30bhp from a 125.
@@rogertycholiz2218 The Honda 50 cc of 1962 was a single. The last race of the year in Japan, Honda won with a 50 cc twin. Their only 5 cylinder in the sixties were the 125 cc RC148 and RC149. Read my book "Honda's Four-Stroke Race HIstory 1954 ~ 1981".
And 16 gears
Two strokes make each horsepower feel like 2 hp
I've never heard it explained better
I had in late 90' a wartburg 353 car and yes two stroke 50HP sounded like 250, no wonder this car was called as wartburgini. The sound of the engine at 130kph was incredible (only the sound, nothing else).
It fires everytime, so yeah.
You mean the displacement feels as doubel...
Two strokes depend on sonic shock waves travelling between diverging and converging cones. The piston ports open, expanding cone sucks exhaust and new charge into the exhaust header. The returning shock wave rams that gas back in before the exhaust port shuts. Peak power happens when piston speed (port open time) matches the pipe length. Small engines can rev high but the peak for a 125 cc is about 12000rpm. 250cc is slower because the speed of sound does not change and the distances inside the pipe are longer.
4 strokes have gas flows controlled by valves so they can rev higher.
16 gears..lol ..did guys from fast and furious get this idea from?
The rc166 (fastest 6cylinder in 1966)have a 14 speed 50cc
@@akhmadridha4156 the rc166 only have 8 speed, 6 inline 250cc.
you got it.
Lmao i would always make the joke they had splitter buttons on their shift knobs because the stick would show 6 gears or they'd have 6 slots on those shifters lmao
I love the smell of 2 smoke in the morning.
ChuckieFinzter Reminds me of my school years.
Hyppyrotta ah yes....FS1e and APs
Smells like heaven.
ChuckieFinzter ah yes. I'm currently daily driving a 50cc 2 stroke minibike so I do indeed love the smell of it in the morning :D
Esp with Castor bean oil,
Those Aprilia's were a favorite of mine. 20k rpm sounds like a very large pissed off bee!
Yeah, they all sound like a load of angry wasps trapped in tin cans to me.
the Kreidler Van Veen 50 sounds like the 80's arcade game Pole Position hahaha
Dont you just love the smell of 2stroke exhaust?
Homebrew Subaru r
Homebrew Subaru top of the top !
60's and 70's two stroke racing tech is fascinating to me. Bless you blue smoke......bless you.
Fantastic video again. The tiny strokers are fascinating.I remember Angel Nieto seemed to win all the time in the '70s on the little bikes. Morbidelli were actually a woodworking firm back in the day.
U revived olden Goldie's .those days won't come back.Two sts are agile,sharp,never say die.they gave confidence.thanks for bringing back the nostalgia.
WTF I can't believe a 50cc 2 stroke engine can make 19HP
Jason wong my aprilia sx 50 makes 13
mine 22-25hp and its moped but it has 90cc 😄
Salmon Editing Bullshit it does. What mods does your aprilia have?
EmeraldFX Vittuakos mua hintiks haukut, kun en ees herralle puhunut. Kyllä tiiän että viilatusta 50 voi saada ton irti mutta en kyllä tollasesta tyypistä usko että se mitään viilailee.
peuransäkit einyt herroittelemaa tartte :3
Finally someone mentions Derbi in a bigger video, I have a 2006 Derbi Senda Xtreme that redlines at around 15k
derbi just isnt a player in the bike soon, derbi is for teenagers
The snap and crack at idle. The clean screams through the gears. The smells. Great video. Wish I could smell them.
Have to point out that not all 2 strokes are in need of drastic rebuilds as claimed, many Vespa's and Lambretta's did tens of thousands of miles without anything more than needing a spark plug and a air filter clean
true, but a 4 stroke often goes several times more then that between rebuilds. Most people never have to rebuild a 4 stroke, but most 2 stroke owners need to rebuild theirs (granted, it's much easier rebuilding a 2 stroke)
A top end rebuild is like half an hour work on most 2 strokes :p
Piston and rings is the top end of a 2 stroke.
I had a 2007 aprilia rs 125. I had it for ten years 35,000 on the clock and only one top end rebuild.
And that's 35,000 miles, not km.
Nice two stroke music
719Moto Mx they all sound the same
Ostblech or dont listen Close enough to the engines. Pop Music Sounds all the same but 2 Strokes are a Sound-Rainbow of beautiful engine noise :D
Yes
yeahh nahh yeahh nahh all 2 strokes sound similar especially in the top range rpm, but low range rpm they can sound a bit different. it really mostly depends on the exhaust and silencer.
if you were to take off the exhaust on all of those bikes.. they would almost sound the same in the top range rpm
Nice video, thanks! The RP68 shown was actually a RK67 2 cylinder as the RP68 never was run or put in a frame due to the FIM rule change limiting the number of cylinders for 50cc to 1.
90's muscle car guys had a heart attack when they saw 500cc's doing 200hp.
Its Also Funny when Comparing newer Cars Or even Japanese 90's-00's Small Cars to Older Large American/Australian Muscle Car V8's & Big Straight 6's from 80's,90's,00's.
My Car Which is a 4 Cylinder 2.0L from 1999 with Turbo Makes About 165 KW @ 3000 Rpm Until About 6000 RPM where its 140 KW @ 7800 Rpm Redline (Its Still Stock Boost @ 14psi)
But Big thing is the 340 NM Peak Torque by 3500 Rpm. **Only For Americans => (Thats 220 Hp & 250 Ft-lbs.)**
That is more Power & Torque than Most 5.0L V8's Up Until about 2010, Specially the Torque.
My Little Thrashed 2.0L with 250,000KM (160,000 Miles) on clock Tows a 2 Tonne Boat (4,000 LBS+) Better Than Most Pre 2010 V8's (Excluding Diesels & Boosted V8's Obviously)
Especially the last one was piece if gem....!!!! Extrremely good work!!!
Simply brilliant to see so many of these machines in one video.
at high revs they sound like mosquitoes
CUTE BUT EVIL When they are inside your ear
Yah it’s annoying af
I couldn’t ride one. Any time I even hear a two stroke, I just think weed wacker lol
Αφού μεκαρονια
your v8 truck sounds like a lawnmover so what?
Imagine a 1000 cc 4 cylinder 2 stroke made by suzuki with 16 gears and 20000 rpm..
Hayabusa dont even existt
It would be nearly impossible for it to rev up to 20,000 rpm since pistons are now bigger which is 250cc per piston. More mass equals less rpm
Emission standards
@@karlkukk7080 emission standards are different everywhere so who cares to mention it.
ItalianPasta the hayabusa isn’t sold in europe because of emission standards. This thing wouldn’t be sold anywhere but China or India.
@@karlkukk7080 I understand that, but here in USA you can take off mirrors and install a turbo. You can even build a bike with viper or helicopter engine and drive it...
2 strokes and Castor oil, for ever in my heart!
Rod CASTROL OIL LOL
Collector Guy no its castor bean oil
Rod Motul
Castor are good untill it gums everywhere
I prefer olive oil
I own a Yamaha rd350 from the 80's and it's awesome
Stinkwheels one and all......but don’t we love them, I’m an original LC hooligan......I miss the two strokes more the older I get! Thanks for the video visio lad 👍👍👍
I am so happy you included the Suzuki RG150 in this list, i have one with only 7000km on the odo
I owned one a few years back, still to this day my favourite bike I've had yet
fucking sunday warm weather riders
my racer still had over 35k on the clock
@@ohhi5237 I still have mine, has 10000 on the clock now but haven't riden it in ages, I have a Bandit 1200 now
my CR250 elsinore w/ CR500 front end was super funky
i had a 90cc twin yamaha with a 100cc top end
and carbs off of a 200cc yamaha street bike.
ran gas and blendzall mix for fuel.
"total loss" ignition ....no weight from a flywheel used a battery to spark the points..
the engine was in a mini-enduro frame with the rear shocks removed.
rigid-tail. flattracker....16,000+ rpm according to the tach.
and it was a terror on the race tack. i was 12 years old going sideways,
throttle wide open to the outside of the turns. no one had ever seen anything like it.
and yes...i always won lol
Are there videos of it?
2 Strokes are awesome. I've been driving one for the last year and intend on taking it to university whenever the weather is good enough. You just can't dislike the smell they make
Hey dude, you could do a video of the 2-strockers of the "eastern block". You know, like Jawa 350 TS, MZ 251 ETZ, Tomos APN 6 and 4... I find those bikes really interesting, especially the weird mechanical solutions of the Jawa 350 TS. Just a suggestion.
its not a racer
i love 2 strokes. ive had a few now, just sold a 1994 honda cr80, limiter was 14,000 RPM really fun little bike if your a small guy or girl.. felt like riding a bmx with an engine, great fun
I like how your channel didn't do click bait even though car news central is a pos click bait * like if you agree so he sees this*
//The Redstone Torch\\ //AVB/\TRT\\ agreed
Thanks :)
Yes, when you have a quarter million subs (Visio does), when you offer quality educational videos full of solid information (he doies), there is no need to do click baiting. By the time I received notification of this video, there were already over 6,500 views. This channel will continue to grow because of the quality and hard work Visio puts into the production. I hope he montizes and receives a paymernt from YpouTube. That will be his reward for all the past effort and his "labor of love."
lol "notafaction" xD
If you`re dyslectic, I apologize, but if you`re not:
Fucking LOLZ :D
Jan, great catch and thank you. I am working halfway around the world from home base and get zoned out at times. TH-cam is a pleasant distraction as I watch the US market overnight from SE Asia. I have corrected the improper spelling.
MZ was instrumental in development of the high performance 2 stroke engine. Suzuki benefitted greatly from their experience by "hiring" a rider/developer Erbst Degner in 1961, assisting his defection from East Germany. He was instantly made into a rich westerner.
At the beginning you said that 2strokes make more power while using lower revs. Correct me if I'm wrong but I thought it was the complete opposite. 4 strokes make more torque at a lower rpm. That's why people bog out going up a hill because they weren't keeping the rpm high enough. Where as my 4 stroke can power through the lower rpm and the 2 stroke just bogs and rpm drops.
Have you seen a four-stroke to make 400 hp/litre? F1 made around 300 hp/litre and revved up to 19,000 rpm. The same goes with the MotoGP engines. they are at like 240+hp/litre and still need to rev higher than a two-stroke. Just compare the Honda NSR500 and Honda RC211V for instance. There might be some regulation limits, but two-strokes just do twice the work (one bang every revolution while a four-stroke fires once per two revolutions).
VisioRacer wasn't asking which engine type is better, they both have their pro's and cons(I own both). Was asking specifically about the low end power of a 2stroke. They are known for having non, yet your intro said they do. Which is incorrect. Also, thank you for the quick reply! Love your video's and your English is improving! Thank you from the US.
P.S. all my experience is from motorcycle engines. Don't know much about F1
I said lower rpm, not low. And that's what I further explained in my comment above. Thanks and cheers
VisioRacer But they don't make power at lower rpm's. They make all their horsepower at high rpm. No low end torque is their only down fall.
Paul Kirk Two strokes makes more power at the same amount of rpm, or same power at lowers revs. Because every single rev have an explosion, while it takes 2 revs to make an explosion in a four strokes (for each cylinder).
Bought a 1975 Yamaha RD350 brand new from the dealership in 10/75 for $1100 at the ripe old age of 18. Promptly rode it from San Diego to Kernville and back with nothing but a sleeping bag and a pocket of spark plugs. Fouled a lot of plugs with the altitude changes. Lots of rain on the 5 freeway. Great bike when the carbs were synched.
Love the smell of 2 strokes engine ❤
Still remember those good ol days having my single cyl Yamaha two stroke! Love to rev it high especially!
2 strokes sound like a pissed of bee
4 strokes sound like a fart
LOVE THEM BOTH
Best comment ever 😷
@@Edwin777-z9x I did not make this comment originally I just really liked this one and I thought to share it
Listen to a v6 Mercury/Mariner outboard.Orgasmic.
your chanel is easily one of the best motor related chanels!
unbelievable that a 500 2- stroke can beat a 1000 4- stroke.
Good old times :(
markus w it can Produce the 1.5x Power Output at the same cubic capacity
Markus Barry (7)Sheene can vouch for that ..
Yes and addictive, im 53 and was in goose pimples watching that,still braking down in the middle of nowhere on em. Burie me with my Aprilia Rs250, 96 Rep and Kdx250
TOMOS: 1979 - 49cc engine, 20 HP, 17000 rpm... when tested, it did 204 km/h (127 mph)!!!
How
How
Keep on believing in fairy tales...why did Tomos never, ever win a world championship race? They even didn't come close!
My uncle drove a Kreidler 50cc 1978 and the following years in the german championship and 1979 at the grand prix at Hockenheim. I have been there at the age of 11. Great experience I will never forget. All the stars with nearly noch limits to go where you want to.
I Have been in the tent of world champion Kenny Roberts Senior. Unbeleavable today.
Barry Shene, Toni Mang, and as a guest the greates of all: Agostini
Yes I miss the times of the great sounding machines.
What about the Aprilia RSA 125cc with incredible 54 horsepower at 13000 rpm?
I still have to repair my grandad´s Derbi Fenix (50cc) when i get a license this year.
Greetings from Spain, and thank you for all your work.
I know is not your style on the videos, but can you do one about the history of Eduardo Barreiros? He´s like a legend for me and for all the Galician mechanics.
What you'll say about lowest revving gas engines?
There is something similar considered, sure
VisioRacer unfortunately I can't find that...
Kacper B ... you go back to school learn some English and how to respect ambiente and people with the disgrace of living around your noisy nuisances . That is "what you'll say about ...
Manuel Luis your wish is my command...
Harleys
haaa le 2 temps ! quel pied ! tout y est ! l'odeur,le bruit,la puissance et les sensations!
mais aussi la mort,les casses moteur et le melange huile/essence en directe a la station !
le 2 temps fait parti de toute ma jeunesse ! j'ai eu RD50,RD 125 ,DT50,DTLC125,minareli 50(cross) ,BPM125(rotax),KX250,RM125,GT125(bi cylindre!) et beaucoup de mob(103/51) !
;)
That 'Bultaco 50' has a Kreidler engine, with water cooling and rotative disc inlet!
And where did you get that total nonsense?
The mechanical tach probably took 50% of your power to run in those 20,000 rpm 50cc bikes! 😂 😆 😂
The Sound of Freedom
It's all fins and rods and edges and noise... t̲h̲a̲t̲'̲s POWER man! ... and you're part of it.... you're strong like it is!
Midnight, Stone 1973
The sound of vzzzzzz bzzzzzz :)
2:48 in two strokes this valve is called the "power valve". It controls the flow out exhaust gas out of the engine, opening and closing depending upon the rpm of the engine, to improve power output throughout the rev range.
Nice! There's something about two strokes...
Awesome video! Ended up here because I have 2stroke myself that revs to 13000 rpm’s
But really, where is Tomos? 50cc 200kmh....
jishimoari the real deal my friend
i thought thomas is a train. thomas and friends
Blaž Benčič tomos, the best
jishimoari where is tomos famous? I live in germany and only know them from the Internet
Aaron schulz Tomos was racing many many years ago, but it goes 205 kmh
Dude, your’e research on this subject looks impressive. I just cleaned about 2kg of carbon from a ts185 exhaust. Gotta love the blue smoke.
Ps, you haven’t lived till you’ve heard an Inter 2 stroke diesel.
V3 50 ccm doing 200 km/h on 16th gear. Now I've seen it all.
100cc kart engines from the late 90’s were up to about 21k. Mean piston speeds were higher than F1. Needed the overrrev in direct drive/single gear classes to ensure the engine was on the pipe to punch out of the tight infield sections.
But we also replaced pistons every 40mins😂. Aircooled and no clutch. Lock it up, rear wheels lock up with it. Crazy times.
Love 2 stroke engines.
I Ride a Kreidler myself. A Suzuki GN Powered bike wich doesnt have much to do with the original kreidlers exept the Design. My father had a Kreidler Florett RMC From the Late 70s and my grandfather had a regular Florett From the late 50s. Honestly to me nothing Beats a Kreidler (Florett RS). The Sound of the Van Veen is awesome
Only Thing a Kreidler fears are Sachs engines.
Now do the lowest revving bikes
They'd probably all be from the early 1900's. The lowest revving modern bikes are probably Harley's and some large Japanese cruisers like the Yamaha XV1900 and Kawasaki VN2000.
Probably the Rocket 3, thanks to it's tremendous torque?
MT-01 also have low rpm, I love seeing that bike go fast, because although u full throttled it all the way up to the red line, that bike still not screaming.
Royal Enfield made diesel motor bikes for the war, they would probably be the lowest revving. In 2005 Kawasaki made a diesel off road bike that made peak HP at 5500 but revved to a usable 1500-7000rpm.
Gamer The Banning easy its those armchairs with a brigs and straton oops sorry i meant harleys
I still ride with my fingers over the clutch to this day incase of an engine seizure , even though I’ve got a four stroke Gsxr , a habit I developed from riding and thrashing two strokes in my youth :)
Thx from thailand.👍👍👍💘💘💘 #RG150veryFAST
I took my ducati in for a service , the only loan bike the had was an Aprillia 250 ... it took the piss out of my riding ability ... 250 miles in a day , while i was working says everything about how much fun that bike was :-)
what about tomos?
Domen Ujčič there are many tomos racing bikes starting from d5 to gp77 going 220kmh and specially d9 bike with 9 gears
Another fantastic selection of motorized marvels to discover thanks to this channel.
My personal favorite engines
My 2021 Honda Cb125r is a 4stroke 4 valves and pick rpm is 11500rpm
20 000 Rpm? This is madness! Я в шоке.
stay woke
причём если оно обороты снижает, то и моща падает катастрофически. Резонансный двухтакт как он есть. Для этого и 16 передач.
Now do a video featuring the early Honda 50cc racers. Double overhead cams and err 22000 rpm! Shame you didn’t include the old MZ 125 in the two stroke category . The designer defected to the west, well Suzuki where he designed their race engines! But nice video
Kreidler💪🏻
Many years ago i had a Honda ns 125f in white with red striping and a blue tank, it wasn't like fully amazing like these but i still enjoyed it
i love yamaha rxz
J’ai eu une Suzuki RGT 250 2temps et c’était sans nul doute la meilleure des motos de ma vie ❤❤❤
cagiva mito ???
Missing.
I really enjoy your videos. They are well thought out, detailed, entertaining and I like that you always give credit when it is due.
Its mainly aprilias that need rebuild after rebuild . I no this because I own one and my bank balance hates it 😂
Another brilliant film. THANKS!
ring... bing... bing... bing tinny sound from expansion pipes! But, but, but, look at all that SMOKE! what about the Errrrrth!
She'll be fine. If you ain't smokin you ain't strokin 😁
Yeasts in a ground and waters have a different opinion. Micro droplets of hydrocarbons are tasty for them.
The sound of that Yamaha bouncing off its limiter gave me goosebumps.
Great video. Thank you.
Tomos smoke them all!!!
Beautiful. Pure gold.
What about the 50cc AM6 engine? Standard they rev to 12000 rpm, but when modified they rev a lot higher.
Yeah and Derbi engine's
Yeah but modified every two stroke eingine revs higher. My sweet little Simson revs up to 13.
Nino Brown Yeah that's true. Is your Simson modified? I am building a fuel injected am6 engine. And I'll see what it revs up to when I finish there project. As before my ignition limited it to 13.
highend bidalot 16k rpm
Ruslan yeah it's heavily modiefied, one has an 80cc reed valve engine with custom made pipes and 30mm carburator. The othe is an old Simson Star from the 60s. It has a custom made crankshaft with more travel, the Original sleeve was removed, bored out and one with more diameter was put in, also 28mm Carb and Custom pipe. Has now 87cc but is rev limited by a long pipe to 10k due to a weak gearbox and overheating issues. But has good torque. A fuel injected am6 should be killer, you got Facebook or Insta Account to follow the build?
What do you think about the Tomos D6?
KR-1 ❤❤❤
AWESOME SOUNDS! IM LOVING IT!
hei there! the video is great, but still, i was watching the whole video and waited to see a TOMOS, a was a bit disappointed
Tomos DM-GP; 19,5 PS at 16000 /min-1, max speed 204km/h!
Yes! There should be Tomos in this video!!!
@@matejbrezovsek6695 And the video author, correct me if I'm wrong, is from Slovenia, land of Tomos.
@@Istoeumapemba Sorry to say, the Tomos racers were an absolute flop when it came to GP racing!
This valve in the RG 150 Suzi exhaust was first used by Yamaha on their highly successful production racers. The 50 cc Bultaco's were made by the two Dutchmen Jan Thiel and Martin Mijwaart. The 50 cc Derbi shown is NOT a Nieto ridden factory bike, but a 1973 production racer, air cooled instead of water cooled, with a claimed power of 15.5 hp.
What about Tomos?
you are the mc professor!! been on bikes since 1966...still going strong...anything about the van veen from the 70+s..rotary engine...need some info!
Are they incapable of idling ?
Repeatedly revving the engine is so annoying.
Its very hard to adjust idle with so oversized carburators
With this old carbs ist nearly impossible at low rpm
Nothing in this engine likes low rpm
yeah the're not,,,
having mods for higher rpm sacrifices d idling...
ones it idle low like d standard specs it wud stop
Low rpm will foul the plugs and cause misfires,hence the reving to keep the plugs clean,2 stroke engines will load up.
The valve you are talking about is a 'power valve'. There are different designs, but they all do the same thing and that's adjust the exhaust port height, changing the exhausts opening angle, increased duration and surface area. Takes the peakiness out of the engine and combined with a large capacity engine is an experience that should not be missed!!!
10:10 lol that fart rocket
Mr Ford Shelby lol yeah that thing was screaming and going like 20
Actually the powervalve, not only does it make the power stroke longer at low rpm by lowering the exhaust port, it also retains heat inside the combustion chamber. Engine manufacturers discovered, that at certain RPM plasma appeared inside the combustion chamber. They also discovered, that the engine runs better and more efficiently when the plasma was present. This valve also helps widen the RPM range in which this plasma is present. Although the effect isn't very big, it's there. But most of the advantage from having a powervalve comes from lowering the exhaust port at low RPM and then opening it up when better gas flow is needed for high RPM.
Where is the honda nsr 125?
one of your best vids yet
love the two stroke stuff
2stroke or nothing
Lo mejor de las pequeñas bestias!!!
where is the Cagiva Mito Evo III 125ccm from 1997.. most beautyful bike in the world ever..
The RG150 (and the UK's RG125F and RG125UN variants) were one cylinder from the RG250 and Aprilia RS250 engine, they share exactly the same head, barrel, power valve assembly. In a way you've covered the same engine twice here. (I've owned RG125UN, RG250VJ21 and 22, RS250 Mk 2, familiar with every last part on all those engines)
what about Tomos :(
TOMOSi so imeli okrog 16KM
kar je 320 konjev/liter prostornine,kar ni slabo...do kok obratov pa se vrtijo?
B K mislim da okoli 16000
se pravi se kosa najboljšimi v tej listi...v tej listi omenja namreč motorje ki se vrtijo najhitreje
B K mogoče je namerno izpustil TOMOS
Raced a go-kart in the seventies that had an Italian built 100cc rotary valve Komet K-78 on it. Stock the engine put out 15hp at 12,000rpm. When modified it put out 25-30hp at 17,000rpm. That engine ripped and was so fast I always had to run 40lbs. heavier than the 100cc Yamahas that also ran in our class.