When I saw the small picture to the video I was thniking wouhaaaa a new 2 stroke engine, new injection system with a new concept of exhaust valvle maybe......... NOPE :)
Even though this is how Japanese 2 strokes engines have been working since the 80s, it is magnificent to see that there's still one Japanese manufacturer that promotes and makes 2 stroke engines. Seeing as the other 3 has stopped manufacturing many of the older parts this year (2021), it's time to move over to Yamaha! Yamaha prevails gents!
@@Kadabra86 yes friend, KTM with its sub companies Husqvarna & GasGas. Sherco, the French brand and then Beta like you mentioned. But when it comes to the Big Japanese Four, it's only Yamaha that still makes brand new :'(
You all forget the best.... Tm bikes are faaaar way better than bêta or ktm's. They have the same passion for 2 stroke singe 1970 now. You def should learn how they are made and what they can do. Leader in the karting and that's not an hasard
@@longlivekawasaki what’s amazing is that Yamaha haven’t changed their 125 and yz250 2stroke for over 15 years and still kept up with KTM that has been updating their 2strokes for all those 15 years. Says a lot about Yamahas motors! Plus they last longer than the other 2strokes as well. I’ve seen so many postings of ppl with KTM’s having all sorts of motor problems. Plus ppl I’ve talked to at the track. I want to get a new Yamaha 2 smoke after seeing a couple this weekend. They sounded absolutely amazing and seem to have plenty of power considering the one guy was not small at all.
@@Josh-cw8by which is absurd because Kawa is making a 250cc in-line four. The r-6 and the Suzuki gsxr6 were the go to bikes in WERA because they could be raced on so many classes. The only bike more useful as an amateur racer is an SV650
@@masterpain7742 reverse flow of the exhaust gasses at bottom dead centre, the 2 stoke pipe is shaped is such a way that the exhaust gasses will pulse and reverse flow back into the cylinder so that less air fuel mixture is wasted out of the exhaust, therefore making more power.
The YPVS system is genius. I'm kind of slow with mech tech and studied a shop manual for a YZ250 power valve system for 2 hours once then closed my eyes and pictured it in my head with the forces from the gyro flowing to the linkage to open up the valve. I love simple mechanical solutions problems they are much more beautiful.
An old, simple but so effective idea from YAMAHA that managed to change the 2-stroke world forever. The way YPVS enriches the power curve puts many 4 strokes into shame. Back in the day I could open the throttle of my DT200R without much care on what revs and gear I was in and the bike was accelerating without complains. Dead easy to work on those bikes too.
@@Jaredpostzstuff Wish I still had mine, it was my first bike. Yamaha released game changers back in the day (XTZ 750, TDR 250, DT200R) and this was the one with the least issues.
I had 2 Yamaha 125cc DT's. The first one was from the early 90's and the second was brand new in 2001. If I remember correctly, they were identical, only some minor changes in the YPVS wiring and some small stuff. :D The second one was stock and I didnt know how to bypass the YPVS, which was used to restrict the power. After I sold the DT, I found out that they had the YPVS wires crossed so it worked backwards.
Cool! Thanks for continuing to build these I really appreciate it! I wish I could get a sponsorship and or a job designing the bikes and especially atvs
In my country in late 90's there was a 2 stroke single cylinder sportbike model Yamaha TZM 150cc. It has YPVS and YCLS, also have radiator (liquid cooled system). It design look like 250cc sportbike and look bigger than it same class competitors at the market, Honda NSR 150, Kawasaki ZX150, Suzuki TXR 150.
I'm more impressed by the fact that Yamaha cared to do an animation about two-stroke technology after all these years. I wonder if whoever did it had to model that engine from scratch or had to install a CAD package from the 90s lol
Despite their higher power to weight ratio, 2 stroke engines are the opposite of an atkinson cycle engine, throwing away a lot of energy still in the gases before the exhaust port opens.
This is demonstrating the fuel loss inherent to all 2 stoke engines. When the piston is down forcing fuel into the combustion chamber, fuel escapes trough the exhaust port. Meaning smokey dirty emissions. This system yamaha has come up with is to use exhaust gas to push the fuel back into the cylinder before the piston closes off the exhaust port. And as everyone knows more fuel equals more power. This is a new approach to that problem.
Yes, Yamaha still makes some 2T engines, but to be honest, they haven't put a lot of R&D into their 2T motors in a very long time. Yamaha's emphasis these days is clearly on 4T technology. I would respectfully disagree with you that Yamaha's 2T motors are industry leading. There are other manufacturers that continuously strive to improve the performance of their 2T engines, and I would argue that some of these companies produce superior 2T motors (KTM and BRP are just two examples).
Yea that true to an extent, the money you save on the yammy though you can drop in aftermarket parts and it’ll be just as competitive as any of those Austrian bikes for about the same price. Pick your poison I ride with two guys who have 350sxf and they got more top end but my yz 250 is a lil quicker, I do have boysen reeds and a turbine power core 2 pipe though as well. I do agree though, I’m a die hard Yamaha fan but they’ve been out classed more recently when talking about factory models. Still more reliable in my opinion, cheaper and easier to find parts too. Everyone should just get whatever speaks out to them. There all competitive for the most part.
Hello. I used YAMAHA RX 115 from 2011 to 2016. 11.7 kW (16 HP) of power provided incredible performance. I was racing 600 cc motorcycles at traffic lights. It is one of the best quality engines produced by YAMAHA. However, the import of 2-stroke engines is prohibited due to Turkey's customs laws and environmental emissions. The RX and RD series are legendary. Congratulations to the engineers who put so much power into a small engine. MADE IN JAPAN
A tecnologia atual já nos permite ter os 2 tempos com muito , muito menos poluição, creio que chegou a igualar um motor 4 tempos , vide os motores 2 tempos injetados KTM e Husaberg, o problema : Mais de 40 mil reais uma moto dessas. E não podemos emplacar. Paciência.
They have never stopped making 2 strokes and they're the only manufacturer of the Japanese Big Four that still produce 2 strokes, aside from the kids 2 strokes which most brands still make.
@@1980VINZ yeah maybe I am young but, in my country they haven't sell a single bnew adult size 2strokes anymore for the past 20 years only chainsaws and tiny mini bikes. From what I've known, they took out 2strokes from street use because of emission standards. So if Yamaha improves this system I am hoping to see a KTM 350EX killer that complies with this bs emission standards.
I drive a qt50 moped, it's yamaha and it's a 49cc 2-stroke, the little motor is wonderful, it's modifiable, and still in stock by changing the size of the moped's wheels, I managed to reach a cruising speed of 50 km/h
i remember TZM 150, thats cold, i have hope Yamaha make a 2 stroke engines with fuel injenction for motorcycle like a TZM series, YZ series, RD series or RX series
@@mas.syamuel Since 45 years I love 2-strokes and e.g. own a Kawasaki 750H2 since 34(?) years, but for most Europeans the combustion engine became EVIL in a very short period of time and they believe that it will kill us ALL! (not the wrong use and not the permanent purchase of 2-tons-cars for inner city areas)
I want that in my life! Which bikes do have this? Is there something big and road legal for Europe? I would love to have a modern 300-500cc two stroke in a street bike.
You can't buy them but go and look at Alan Millyard chanel. He makes the extraordinary big 2 strokes. For instance a Kawasaki 500 modified to become a water cooled 4 cylinder engine by grafting on the top ends from 2×250 yamaha Lc 's
Nah, you can't buy them new because they pollute too much. This tech was invented back in the 1980s, and the bikes that had them were freaking great, the RD350 YPVS for example. Not available now.
I would like to see Yamaha upgrade its YZ250X by adding an electric start, 6-speed wide-ratio transmission, and off-road lighting. I am not wanting auto lube or fuel injection like KTM's TPi bikes.
Why? Do you like smog from burned oil and noise or what? Advantage of two stroke is power to weigh ratio on and ability to rev high with low component count. For environment its poop because it burns oikl
![[Full Episode] Hell's Kitchen Thailand EP.13 | 5 พ.ค. 67](http://i.ytimg.com/vi/Uhzt_Oprgc4/mqdefault.jpg)
After 3 decades finally an animation of two stroke's powervalve
4 decades.
Hahahaha
When I saw the small picture to the video I was thniking wouhaaaa a new 2 stroke engine, new injection system with a new concept of exhaust valvle maybe......... NOPE :)
10 decades if you count 2 strokes in general!
@@fidelcatsro6948 Video is about YPVS technology. Later transfered to 4 strokes as the EXUP power valve.
Even though this is how Japanese 2 strokes engines have been working since the 80s, it is magnificent to see that there's still one Japanese manufacturer that promotes and makes 2 stroke engines. Seeing as the other 3 has stopped manufacturing many of the older parts this year (2021), it's time to move over to Yamaha! Yamaha prevails gents!
ktm and Italian Beta make 2stroke advanced technology inyection for 2t
@@Kadabra86 yes friend, KTM with its sub companies Husqvarna & GasGas. Sherco, the French brand and then Beta like you mentioned. But when it comes to the Big Japanese Four, it's only Yamaha that still makes brand new :'(
I have an 84 rz350 with this tech. way ahead of its time
You all forget the best.... Tm bikes are faaaar way better than bêta or ktm's. They have the same passion for 2 stroke singe 1970 now. You def should learn how they are made and what they can do. Leader in the karting and that's not an hasard
@@longlivekawasaki what’s amazing is that Yamaha haven’t changed their 125 and yz250 2stroke for over 15 years and still kept up with KTM that has been updating their 2strokes for all those 15 years. Says a lot about Yamahas motors! Plus they last longer than the other 2strokes as well. I’ve seen so many postings of ppl with KTM’s having all sorts of motor problems. Plus ppl I’ve talked to at the track. I want to get a new Yamaha 2 smoke after seeing a couple this weekend. They sounded absolutely amazing and seem to have plenty of power considering the one guy was not small at all.
Yamaha has won over so many people just for the sheer fact that they still produce 2 smokers and Sport Quads. Long Live Yamaha!
Yes, i have two ;)
Sadly I can't Get a Sport Bike With 2 Stroke
Love that Yamaha still make their 2 strokes!
What don't they make.
@@nellawell4976 The R6 anymore 😟
@@Josh-cw8by which is absurd because Kawa is making a 250cc in-line four.
The r-6 and the Suzuki gsxr6 were the go to bikes in WERA because they could be raced on so many classes.
The only bike more useful as an amateur racer is an SV650
Wish honda kept the CR 250's going at least :(
they still do??
I still remember the sound of the YPVS testing itself when I turned on the ignition of my RD350Fll 25 years later 💓
Yesssssss👍
Yessss #2 👍👍
rang tang tang rang rang tang tang rang rang tang tang rang
@@fidelcatsro6948 Yesss!! #3 👍👍👍
Amazing bike... fast and light
Interesting this animation shows the reversionary pulse, most don't.
What is that
@@masterpain7742 reverse flow of the exhaust gasses at bottom dead centre, the 2 stoke pipe is shaped is such a way that the exhaust gasses will pulse and reverse flow back into the cylinder so that less air fuel mixture is wasted out of the exhaust, therefore making more power.
its called resonance effect.
The YPVS system is genius. I'm kind of slow with mech tech and studied a shop manual for a YZ250 power valve system for 2 hours once then closed my eyes and pictured it in my head with the forces from the gyro flowing to the linkage to open up the valve. I love simple mechanical solutions problems they are much more beautiful.
An old, simple but so effective idea from YAMAHA that managed to change the 2-stroke world forever. The way YPVS enriches the power curve puts many 4 strokes into shame. Back in the day I could open the throttle of my DT200R without much care on what revs and gear I was in and the bike was accelerating without complains. Dead easy to work on those bikes too.
I’ve still got one sir! An impressive bike for sure
@@Jaredpostzstuff Wish I still had mine, it was my first bike. Yamaha released game changers back in the day (XTZ 750, TDR 250, DT200R) and this was the one with the least issues.
sadly two strokes are no longer street legal in my country :(
YPVS最高です！これのおかげで低速からトルクもりもり、高回転もしっかり回ってくれて乗りやすい
これからもRZRR乗るぞー！
RZ250に乗っていたのでRZRでのあのイグニッションを入れた時のニーニーって作動音が羨ましかった
どういう仕組みの機構なんだろうと思ってたので、視覚化した説明が見れるのはとてもわかり易くて面白いです。
I had 2 Yamaha 125cc DT's. The first one was from the early 90's and the second was brand new in 2001. If I remember correctly, they were identical, only some minor changes in the YPVS wiring and some small stuff. :D The second one was stock and I didnt know how to bypass the YPVS, which was used to restrict the power. After I sold the DT, I found out that they had the YPVS wires crossed so it worked backwards.
Japanese Bikes are always best with quality that shows the discipline, passion and ethics towards R&D.
次世代型 環境対応２サイクルエンジンが出るとしてもＹＰＶＳは必須の技術
Для двух тактных двигателей оптимален непосредственный впрыск, тогда топливо не будет бесполезно сгорать в выхлопной трубе
@@FAU740 I think next generation of 2-stroke motorbike engines could use the YPVS technology together with direct-injection as you said
Cool! Thanks for continuing to build these I really appreciate it! I wish I could get a sponsorship and or a job designing the bikes and especially atvs
great detail
In my country in late 90's there was a 2 stroke single cylinder sportbike model Yamaha TZM 150cc. It has YPVS and YCLS, also have radiator (liquid cooled system). It design look like 250cc sportbike and look bigger than it same class competitors at the market, Honda NSR 150, Kawasaki ZX150, Suzuki TXR 150.
I'm more impressed by the fact that Yamaha cared to do an animation about two-stroke technology after all these years. I wonder if whoever did it had to model that engine from scratch or had to install a CAD package from the 90s lol
Despite their higher power to weight ratio, 2 stroke engines are the opposite of an atkinson cycle engine, throwing away a lot of energy still in the gases before the exhaust port opens.
I have an 86 dt200. Yamaha had a much earlier system that operates with a rotational valve driven through cables from a remote motor.
Thx Yamaha for what you have bring to 2 stroke world. Without your system, i think i would be already dead riding my italian TM 300cc smr aha
U dumdum yamaha didnt invent it and your tm 300 have powervalves
@@robinblomqvist5786 No shit sherlock
初代RZのころは、6,000rpmくらいからパンチの効いたいかにもという2stのパワー曲線だったが、TZRくらいになってから
全回転域にわたってすごくつながりがよく、コーナーでも安心してスロットルを開けられるのはこのデバイスが一役買ってますね
91年式のTZR250Rを持ってますが、ホントに名車だと思います
This is demonstrating the fuel loss inherent to all 2 stoke engines. When the piston is down forcing fuel into the combustion chamber, fuel escapes trough the exhaust port. Meaning smokey dirty emissions. This system yamaha has come up with is to use exhaust gas to push the fuel back into the cylinder before the piston closes off the exhaust port. And as everyone knows more fuel equals more power. This is a new approach to that problem.
Gotta love tech from the 80's 😁 Anyways next show the YEIS 🙏
... and the YICS !
Yamaha is the king of two strokes and always will be, the best period.
Yes, Yamaha still makes some 2T engines, but to be honest, they haven't put a lot of R&D into their 2T motors in a very long time. Yamaha's emphasis these days is clearly on 4T technology. I would respectfully disagree with you that Yamaha's 2T motors are industry leading. There are other manufacturers that continuously strive to improve the performance of their 2T engines, and I would argue that some of these companies produce superior 2T motors (KTM and BRP are just two examples).
Yea that true to an extent, the money you save on the yammy though you can drop in aftermarket parts and it’ll be just as competitive as any of those Austrian bikes for about the same price. Pick your poison I ride with two guys who have 350sxf and they got more top end but my yz 250 is a lil quicker, I do have boysen reeds and a turbine power core 2 pipe though as well. I do agree though, I’m a die hard Yamaha fan but they’ve been out classed more recently when talking about factory models. Still more reliable in my opinion, cheaper and easier to find parts too. Everyone should just get whatever speaks out to them. There all competitive for the most part.
Спасибо, что ещё раз напомнили как работает мощностной клапан на 2т моторе. Нам бы сток в чувства привести...
素晴らしい技術！
ヤマハ、最高！
Wow. Thats pretty interesting design that solves some of the problems with a two stroke engine.
my rd350ypvs could hit 120mph in a jiffy back then!
Rotax have done this exhoust vale all the way back to 2001
@@viktorhaggstrom2305 Yamaha have been using it since 1977
If you guys could remake the banshee you'd make a killing in today's market.
Id jump on that
oh man!!
Would never pass regulations.
@@Jellyrollrider regulations suck.regulations are 4 4stroke girlie men.
@@madeindade.3242
Haha...says the manly girl who just got its TH-cam licence...
Hello. I used YAMAHA RX 115 from 2011 to 2016. 11.7 kW (16 HP) of power provided incredible performance. I was racing 600 cc motorcycles at traffic lights. It is one of the best quality engines produced by YAMAHA. However, the import of 2-stroke engines is prohibited due to Turkey's customs laws and environmental emissions. The RX and RD series are legendary. Congratulations to the engineers who put so much power into a small engine. MADE IN JAPAN
studio is useful for adding knowledge and adding insight into knowledge, thank you for the toritoial
Seria Muito bom se existe moto de rua com motor 2 tempos. Bons tempos...
Concordo em GÊNERO NÚMERO E GRAU
A tecnologia atual já nos permite ter os 2 tempos com muito , muito menos poluição, creio que chegou a igualar um motor 4 tempos , vide os motores 2 tempos injetados KTM e Husaberg, o problema :
Mais de 40 mil reais uma moto dessas.
E não podemos emplacar.
Paciência.
Jawa , иж планета 5 самые крутые
Yamaha : YPVS
Kawasaki : SUPER KIPS
Honda : RC VALVE
Suzuki : AETC
husqvarna : HTS
rotax: RAVE
Ktm???
Ktm : SUCKS
Honda isnt ATAC?
I hope yamaha still can produce the 2 stroke spare part cuz is very hard to find the original part this day
見ているとワクワクしますね！
オフロードで長らく生き延びてきた2stエンジンですが、RZ250の時のように最後の2stモデルだと思ってもう一度市販車の投入に期待してます。
250cc〜65ccまであるYZのバリエーションで転用できたら最高です。
現代のオイルの技術革新とインジェクション化をして排気ガス規制をクリアできませんかね。
残り少ない脱炭素の波にどう2サイクル車を投入するか期待してます。
また、高額でも良いので過去の車両のメーカーでレストアやリフレッシュプランプランなどのサービスとして拡充も検討して頂けたら嬉しいです。
Excellent animation 👍
TDR 250 Ypvs owner, many years ago... love that bike.
Only, those Nissin brakes were not at TDR 250 level.
当時RZ350からRZR250に乗り換えた時、低回転から発進出来るのが驚きでした。
YPVSは先駆け
ホンダのATAC/RC-Valve
スズキのSAEC/AETC
カワサキのKIPS
レーサーレプリカブームの頃に必死で覚えたなぁ
モノサスもYAMAHAからだったね
当時、モトクロスで直前までリア廻りを隠して、カバーを外した時に「うおおお！サスが無いぞ！！」と声が上がったと当時観戦していた人から聞いた
I have a 1985 CR80R with the ATAC valve. It's useless. They ditched it in 1986. It was short lived, only available in the 1984 and 1985 models.
i guess i agree!!🤷🏿♂️..team yamaha...!!
YPVSの起動音が最高にテンション上がる
Love yamaha from indonesia🇮🇩👍
loved the earlier DT200
That system has been around for awhile now,cool though
Good job Yamaha 👍
ヤマハの2スト技術は世界最高だと思ってます！
RZ-Rの始動時にキーオンした時のジィージィージィーってYPVSのモーターが起動してたの懐かしく思います。脱炭素に負けず、また素晴らしいエンジンを開発していただくことを祈ってます。
Hm good...
Muy instructivo y específico excelente para material de estudio
long existence at 2t!! ♥
Such a magnificent process
I have a Yamaha 350 ypvs 1986 y.o. Nice bike! 👍
solo imaginarse, con la tecnologia de hoy, como seria los motores de dos tiempos......
i always wondered how the power valve system worked.
👍👍👍👍 Awaiting eagerly for production
この動画出したからには、部品供給の安定化を期待します。
Cómo se llama la música del vídeo?
I am from Indonesia🇮🇩
I like 2 Stroke engine💨💨👍🏻
Thank you TH-cam for recommending me this😍😘😘😘.
เป็นประโยชน์มากครับ ขอบพระคุณมากครับครู 🙏❤️
Yamaha...the best of the history!!!!
Yes, 2 stroke is back!
They have never stopped making 2 strokes and they're the only manufacturer of the Japanese Big Four that still produce 2 strokes, aside from the kids 2 strokes which most brands still make.
Nope 2 strokes isn't back, it never left... And this YPVS system is same age than me........41 years old.
You should be very young I bet... 😉
@@1980VINZ yeah maybe I am young but, in my country they haven't sell a single bnew adult size 2strokes anymore for the past 20 years only chainsaws and tiny mini bikes. From what I've known, they took out 2strokes from street use because of emission standards. So if Yamaha improves this system I am hoping to see a KTM 350EX killer that complies with this bs emission standards.
Excellent videos ! 👍
何故に今2ストの解説？
でも嬉しいですね。
ヤマハは今でもYZ250などの競技用2ストオフロードレーサーを開発、市販しているんですよ
’26年以降の F1,MotoGp案件のためなら色々な意味で、とても嬉しい
見てて楽しいです😊
I still use 2stroke until now. 2stoke lovers from indonesia 🙏
Deve ganhar muita potência. Muito bom.
Não ganha potencia, ypvs deixa o motor mais linear.
YAMAHA é show 👏👏👏 Muito bom suas motos deixa Honda no chinelo
I have 2stroke Yamaha made in 1989 and every day have great emotions with japan engenering!!!
heres my 1983 yamaha kitty!
imgur.com/a/W1YtzSz
I always wondered if you can build 4-stroke engine with a 2-stroke mechanism
r1z乗ろうと思ってるからYPVSがどんな機能をするのか知れてよかった。
でも完全に理解するには数日かかるwww
Sir may I know the software name used to create this impressive and knowledgeable video
Yamaha é excelente
I drive a qt50 moped, it's yamaha and it's a 49cc 2-stroke, the little motor is wonderful, it's modifiable, and still in stock by changing the size of the moped's wheels, I managed to reach a cruising speed of 50 km/h
A bit of motogp tech made its way to production
i love 2 strokes engine
yamaha had the most reliable system all the other brands had issues and problems long term
水素エンジンが実用化出来れば2サイクルエンジンが公道復活出来る可能性が出ると思います。
その時YPVSもRZの時以上に必要とされるデバイスになると思います。
I remember when YPVS came out, on the 1982 YZ’s I believe. It was a little Black box by the gas tank…I don’t know what it did🧐
YPVSの恩恵に授かった 初代TZR(KT1)乗りだった自分は、都内の下町だったが、渋滞も激しい時代で、低速トルクのありがたみを実感できた
２ストが絶版車になり、RZV500が永遠の夢になってしまったが、何時かは乗りたいと思ってる50代だ
電動モーターに取って変わる時代になり、内燃機関が終わりを迎えるとは、本当に悲しい
アイドルでも高回転でも走るトルクにたまげたよ。すげーなヤマハって
Absolutely stunning love YPVS technology
Я обожаю твои технологии.
2型R1-Z乗ってました！キーをＯＮにした時のYPVSの音が懐かしいなー♪
よーし！走りに行くぞ！って気分にさせてくれる音ですねw
残念ながらCDI故障&お小遣い範囲内での維持が困難になり手放してしまいましたが、できることならもう一度YAMAHAパラツインに乗りたいですな♪
Smart simple and acurated pungsion nice solusion
i remember TZM 150, thats cold, i have hope Yamaha make a 2 stroke engines with fuel injenction for motorcycle like a TZM series, YZ series, RD series or RX series
yes TZM what a memory, the only problem is power valve tend to crack but maybe with new material it will solve the issue
nope, even 4-stroke is considered as history now...
@@cagr4249 why not, this machine still has potential
@@mas.syamuel Since 45 years I love 2-strokes and e.g. own a Kawasaki 750H2 since 34(?) years, but for most Europeans the combustion engine became EVIL in a very short period of time and they believe that it will kill us ALL! (not the wrong use and not the permanent purchase of 2-tons-cars for inner city areas)
So made is reality in indonesian markets now.
I love 2 stroke
I LOVE YAMAHA
Vídeo Muito bom!
エンジン周りの部品再生産してくれないかなぁ。
お願いします！
Спасибо, что не забрасываете надёжную и не прихотливую технологию.
да, только с этими "клапанами" она уже не такая надежная и прихотливая;)
@@Tim_1o1 этот клапан выкинуть не проблема, и без него двигатель будет работать.
YPVSは感動の一言だった。
できればYEIS解説CG見てみたいです。
DT 200R. A MELHOR MOTO DO MUNDO.... PARABÉNS🇧🇷🇧🇷🇧🇷🇧🇷
Conhecir na hora...
I like yamaha motor ☺
Which way will the viscous material enter the engine to lubricate?
2t bikes are still the best 😁
I want that in my life! Which bikes do have this? Is there something big and road legal for Europe? I would love to have a modern 300-500cc two stroke in a street bike.
You can't buy them but go and look at Alan Millyard chanel.
He makes the extraordinary big 2 strokes. For instance a
Kawasaki 500 modified to become a water cooled 4 cylinder engine by grafting on the top ends from 2×250 yamaha Lc 's
Nah, you can't buy them new because they pollute too much. This tech was invented back in the 1980s, and the bikes that had them were freaking great, the RD350 YPVS for example. Not available now.
There is no bike like a RD350YPVS for putting a smile on your face.
I love the Honda company, 私はホンダの会社が大好きで
I would like to see Yamaha upgrade its YZ250X by adding an electric start, 6-speed wide-ratio transmission, and off-road lighting. I am not wanting auto lube or fuel injection like KTM's TPi bikes.
Now I am understand how that engine work.....
its like the vva of 2 stroke engines
Dope tune. 🤙
O melhor motor do mundo é o 2tempos,simplesmente maravilhoso....seria o motor ideal para o Brasil....
Why? Do you like smog from burned oil and noise or what? Advantage of two stroke is power to weigh ratio on and ability to rev high with low component count. For environment its poop because it burns oikl