How 2-stroke exhaust pipes work | Offroad Engineered

27.11.2019
986 409 Näkymät

If you ride a dirt bike, you most likely have a 2-stroke, especially if you do Enduro. However, it is also likely that you don't fully understand how your bike works or why it has certain parts. For example, have you ever wondered why the exhaust pipe, one of the most important parts of the 2-stroke bike, is shaped the way it is?
If you haven't, here's your chance! After this video, you'll understand perfectly how it works, the reasons behind its shape, and how it affects the performance of your bike.
Enjoy and subscribe to know more about the bikes we love to ride!
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Cheers!
#ExpansionChamber #2Stroke #ExhaustPipe

Kommentteja
  • Thank you all for the love you have shown, I really appreciate it! 😊Note: No, I did not mention the first back pressure generated when the pressure wave reaches the divergent, which is responsible for creating some suction on the crankcase. I left that info out to make the video clean and simple (so everyone can understand it without being intimidating) and focus on the main pressure wave generated on the pipe!

    Steps to PodiumSteps to PodiumVuosi sitten
    • Thank you so much mate!! 💪💪

      Steps to PodiumSteps to PodiumUukausi sitten
    • You have done a great job mate spread the 2 stroke genius 👌👌👍👍🇬🇧🇬🇧 love from England 👍👍

      Guxy GuyGuxy GuyUukausi sitten
    • @donnie baker you have it exactly right, when your power band as people like to call it is kicked in and you're flying your pipe is at full capacity ! Max flow

      Jim WilliamsonJim Williamson2 kuukautta sitten
    • Thank you so much! I really appreciate the comment! 🙏🙌🙌

      Steps to PodiumSteps to Podium2 kuukautta sitten
    • @Richard Key MZ

      Guxy GuyGuxy Guy2 kuukautta sitten
  • Esse sotaque portugues nao engana ninguem ahahah. Subscrito! Adorei o conteúdo e a explicação direta ao assunto.

    Francisco CostaFrancisco Costa16 tuntia sitten
    • 💪💪💪

      Steps to PodiumSteps to Podium16 tuntia sitten
  • Not even sure why I watched this lolz! Know how 2 stroke pipes work already. But I have to say this guy did a really good job. You just made a few people a tab bit smarter. Could you imagen if this guy used cards with pictures on it.... All these kids after 2010 would actually learn something then LOL!

    Rich MorgensteinRich Morgenstein21 tunti sitten
    • Thank you sooooo much for that! Im glad I could teach you something, you just made my day 🙌🙌

      Steps to PodiumSteps to Podium21 tunti sitten
  • the best explication.

    Andre LuizAndre Luiz2 päivää sitten
    • Thank you! 🙌🙌

      Steps to PodiumSteps to Podium2 päivää sitten
  • Evem zlatan doesnt know he is on youtube talking about two strokes.

    Kamal GillKamal Gill4 päivää sitten
    • 🤣🤣🤣

      Steps to PodiumSteps to Podium4 päivää sitten
  • Coincidentally, these same animations can be used to explain what happens when I eat chicken nuggets.

    Psycho's NeighborPsycho's Neighbor5 päivää sitten
    • 😂😂😂

      Steps to PodiumSteps to Podium5 päivää sitten
  • What about the end of the pipe? What effect does stinger length have on performance? I wanna make mine a little shorter on my RZ350 LC.

    Monkey SpannerMonkey Spanner8 päivää sitten
  • Bray brap for life

    Punisher 506Punisher 5068 päivää sitten
    • Amen for that!

      Steps to PodiumSteps to Podium7 päivää sitten
  • So a 2stroke like uses backpressure to create a the powerband.

    Shanathan RaikonenShanathan Raikonen8 päivää sitten
  • Very intresting.

    jp1234554321jp123455432110 päivää sitten
  • some racing 2 strokes have completely straight pipes , no bends :)

    AndreaAndrea10 päivää sitten
  • Can you explain the "Stinger" size. Length? Diameter? Effect? Etc?

    mike wilksmike wilks11 päivää sitten
    • Yes I can, and I will!!

      Steps to PodiumSteps to Podium11 päivää sitten
  • Ótimo vídeo meu caro! Reconheci seu sotaque português de cara! Um abraço do Brasil!

    Rafael PaivaRafael Paiva11 päivää sitten
    • Muito obrigado Rafael! 🙌 um enorme abraço de Portugal! 😊💪

      Steps to PodiumSteps to Podium11 päivää sitten
  • My question is why 2 stroke is better for enduro than 4 stroke ....... explain with more animation and its science .more deeply.

    R. SINGH BISHTR. SINGH BISHT12 päivää sitten
  • Ok this definitely makes sense to me as rc engines have a tuned pipe as well. The nitro rc engines run as normal from idle to about half throttle and when you wide open them they really scream almost like you hit the nitrous switch. My question is why don't 2 stroke equipment have these tuned exhaust and is there any real gains to muffler modifications or would this be damaging to say a chainsaw or trimmer?? In the landscape world more power is generally a good thing but not if the cost is a peice of equipment with a lot shorter engine life.

    Shawn DubayShawn Dubay12 päivää sitten
  • Maybe its worth mentioning that this design were invented by east german engineers at MZ factory, later stolen by a MZ engineer who fled to the west and sold the stolen invention to Suzuki, now spread across all brands.

    scannorsescannorse16 päivää sitten
  • You confuse pressure with speed, when the pipe becomes bigger, the pressure raises and when it becomes smaller, the pressure drops. Venturi equation

    panos papadopoulospanos papadopoulos22 päivää sitten
    • The fluid must remain at the same temperature throughout the flow

      Steps to PodiumSteps to Podium21 päivä sitten
    • @Steps to Podium which one??

      panos papadopoulospanos papadopoulos21 päivä sitten
    • Venturi equation does not apply here since one of its premises is not met

      Steps to PodiumSteps to Podium21 päivä sitten
  • Parabéns pelo conteúdo!

    RafaelRafael24 päivää sitten
    • Muito obrigado Rafael!! Grande abraço 😊💪

      Steps to PodiumSteps to Podium24 päivää sitten
  • Nice job.

    CodyjrtCodyjrt25 päivää sitten
    • 💪💪💪

      Steps to PodiumSteps to Podium25 päivää sitten
  • ZLATAN!?!?!?!?!?!?!!!!! nah fr, you look dam handsome ...no homo

    little ticked offlittle ticked off28 päivää sitten
    • 🤣🤣🤣🤣🤣🤣🤣 thanks bro 👌😂

      Steps to PodiumSteps to Podium27 päivää sitten
  • I lernt something . I love motorbikes !

    Mohammed ZamanMohammed ZamanUukausi sitten
  • finally i find video that expalins why twostroke engine exhaustpipe looks so weird. i neber kknow that before so thankyou. when i was young i dirive many different mopeds some have normal exhaus pipe and some have that kind of pipe you show us and we called them powerpipes and we do not even know why or how it gives more power 😄 some times i even think it.s give more power because it,s thicker than normal pipe althought the end of the pipe was not thicker at all and then we make power mufflers just taking out all things that are inside the muffler and and we think no we get more power although we get only more noise and maybe stupidest thing we do was to take whole exhaus pipe off and if im right like tthe motor makes less power and more noise and nothing else but we was kids and have mopeds so it,s almost have to try to tuning it faster. best tuning was change the chain gears that way we get the mopeds accelerate faster but stop speed got lover of course but it feels faster.

    alex 1alex 1Uukausi sitten
    • Glad i could help! 💪💪

      Steps to PodiumSteps to PodiumUukausi sitten
  • In short a technical pulse generator that can be tuned for specific rev ranges.. been there done that..

    Rebekah FrenchRebekah FrenchUukausi sitten
  • Boa Diego ensina nos! - super enduro na veia! ae Diego estive pensando em criar tipo um "segundo estágio" ao longo do caminho dentro ou fora do escape ainda não decidi, o que vc acha que aconteceria, será que ia melhorar um pouco a eficiência da queima do combústivel reutilizado ?

    Fabio PetriniFabio PetriniUukausi sitten
  • fiboth.info/like/videot/eXltdX7UscqvdJ0

    warna warniwarna warniUukausi sitten
  • Erm, pressure increases as diameter increases, velocity increases as diameter decreases

    Walker DempsterWalker DempsterUukausi sitten
    • 🤣🤣🤣

      Steps to PodiumSteps to PodiumUukausi sitten
    • Yeah but I never met this Bernoulli fella. He was prolly just joking.

      Jesse noneJesse noneUukausi sitten
    • erm, this is not the Bernoulli equation..

      Steps to PodiumSteps to PodiumUukausi sitten
  • Thank you! That was really clear and made it simple to understand. I once built an exhaust pipe for my 2 stroke and it wasn't easy! There was a very good book on improving 2 stroke performance and the exhaust pipe was a huge part of that. Sadly, I lost that book somewhere along life. :(

    sethbrown1763sethbrown1763Uukausi sitten
    • Im happy to hear that! I bet it wasn't but it sure was a good challenge, I imagine 💪

      Steps to PodiumSteps to PodiumUukausi sitten
  • There's even more going on with the waves in an expansion chamber. Read the two stroke tuners handbook it's explained better and much more in detail than this.

    Black LightBlack LightUukausi sitten
    • @Steps to Podium I think you could've quickly showed and explained more maybe without messing with flow graphics. You can't quickly detail pv tech, but can mention they also affect compression and how expansion chamber diameters(even on the same engine) affect power or compression curves. I'm assuming viewers are mostly interested in the really shapely dirt bike pipes you show. Thanks for the vid.

      Jesse noneJesse noneUukausi sitten
    • @Steps to Podium The book is out of print, so you'd have to borrow it from a real bike mechanic or pay good money for a used copy now. How would you know that "most people" find books intimidating? Because you do? Are you a slow learner? Did you fall on your head too much? That's ok. Books have no time limit - take your time and read slower. Get over your fear of books and quit dumbing people down to your cartoonish knowledge level. From the book's google description; "Gordon Jennings' Two-Stroke Tuner's Handbook was written in the early heyday of two-stroke, motorcycle road-racing, drag-racing and motocross. This book, now long out of print, was the "bible" of two-stroke performance engine builders and racers and it's a treasured addition to any mechanic's library." And I'm glad you're "happy for me" you condescending PUTZ!

      Black LightBlack LightUukausi sitten
    • Dude, take a chill pill... if you have read something, I'm happy for you. For those who don't, this video is a damn good way to understand what most people find intimidating to look up in books.

      Steps to PodiumSteps to PodiumUukausi sitten
    • @Steps to Podium Defensive? Some people do understand how their 2-stroke bike works, and you only need a 5 min video to explain what an expansion chamber does if you actually know what you're talking about. And you don't. The "Two-Stroke Tuner's Handbook" is not an "engineering book". I got my copy 40 years ago. Maybe the idea of reading a 1/2" thick book scares you, since you equate it to "the existence of mankind in detail". You obviously haven't read it. From your description; "After this video, you'll understand perfectly how it works, the reasons behind its shape, and how it affects the performance of your bike." That's some BS! And Anonymous wants his face mask back.

      Black LightBlack LightUukausi sitten
    • Oh, sorry, i didn't know you were expecting that a 5 min video could replace the depth of an engineering book... Next time Ill do a 6 min video explaining the existence of mankind in detail 🙄🤦🏻‍♂️

      Steps to PodiumSteps to PodiumUukausi sitten
  • check my channel to see how you can increase compression

    pietje keesjepietje keesjeUukausi sitten
  • Very informative and explained great. Thanks!

    209CALI* *209CALI* *Uukausi sitten
    • Thank you for watching! 💪💪

      Steps to PodiumSteps to PodiumUukausi sitten
  • Two stroke pipes are called tuned expansion chambers been in the game for some time 😂

    charles manningcharles manningUukausi sitten
  • Does the silencer affect the performance of the engine?

    Funny Clips FirstFunny Clips FirstUukausi sitten
    • @Steps to Podium okay thanks man maybe I'll change my plan

      Funny Clips FirstFunny Clips FirstUukausi sitten
    • It affects a lot! It's hars to explain you since there's a lot to take into account. I would recommend you to do a deeper research into this subject 💪

      Steps to PodiumSteps to PodiumUukausi sitten
    • @Steps to Podium I am planning on building something using 2 stroke engine but I need the exhaust away from some parts, I'm planning to extend the length of the pipe before it reaches the "bulk part" of the pipe or the divergent... does this affects the performance too? In what way?

      Funny Clips FirstFunny Clips FirstUukausi sitten
    • Decreases horsepower but can increase torque, depending on the lenght of the silencer

      Steps to PodiumSteps to PodiumUukausi sitten
    • @Steps to Podium does it lower the performance?

      Funny Clips FirstFunny Clips FirstUukausi sitten
  • very good explanation. thank you.

    Adam KAdam KUukausi sitten
    • Thank you for watching!! 💪💪

      Steps to PodiumSteps to PodiumUukausi sitten
  • I hate 2-strokes. They sound and smell horrible and are often unreliable. My hedge cutter, leaf blower and strimmer are 4 stoke

    Fergus McIverFergus McIverUukausi sitten
  • MIT teachers smell exhausting fumes

    Robert BellRobert BellUukausi sitten
  • This was a great video.

    Jay MJay MUukausi sitten
    • Thank you so much!! 🙌

      Steps to PodiumSteps to PodiumUukausi sitten
  • no explanation as to why return pressure wave pushes gases but rebound wave does not but definitely captures the essence of it

    NOBOX7NOBOX7Uukausi sitten
  • Well explained. Thank you.

    Da NoDa NoUukausi sitten
    • Thank you for watching! 🙌

      Steps to PodiumSteps to PodiumUukausi sitten
  • Are thows pipes like a Cadillac Converter

    John HersheyJohn HersheyUukausi sitten
  • Zappa goes technical! Well done, thanks for sharing.

    Fleetwood McDuecen25Fleetwood McDuecen25Uukausi sitten
    • Thank you for watching! 💪

      Steps to PodiumSteps to PodiumUukausi sitten
  • Tenho 100% de certeza que o narrador é Português. Não faço ideia do porquê, sotaque juntamente com tom de voz, acentuação e ênfase verbal talvez ou se calhar todas essas coisas juntas, só sei que sei.

    João EJoão EUukausi sitten
    • É estás 100% certo! Bom dia alegria! 😂

      Steps to PodiumSteps to PodiumUukausi sitten
  • I still don't get how the pressure wave bounces back, but does not interfere with the exhaust gas...

    Dawn MoonDawn MoonUukausi sitten
    • That's exacty it 👌

      Steps to PodiumSteps to PodiumUukausi sitten
    • @Steps to Podium every pressure wave pushes something away, in this case it initially pushes the air in the exhaust away and pulls the exhaust gasses out of the exhaust. So far to good. But when the wave in the exhaust bounces back ... the only way for that wave to make it back from the exhaust to the engine would be if it's stronger than the next wave outwards. That's the part where I get stuck. But it must probably be calculated and timed in such a way that the 2 waves don't cancel each other out. Amazing technology it is :)

      Dawn MoonDawn MoonUukausi sitten
    • The pressure wave is just the concentration of matter in the air and the exhaust gas is the matter. I even gave an example to try to help understand the phenomenon 😊

      Steps to PodiumSteps to PodiumUukausi sitten
  • So the term "on the pipe" makes perfect sense.

    FranktheDachshundFranktheDachshundUukausi sitten
  • Very educative video. Thanks

    Pedro TalaveraPedro TalaveraUukausi sitten
    • Thank you for watching!

      Steps to PodiumSteps to PodiumUukausi sitten
  • i didnt even know this was a thing but its actually really interesting

    vidaoTimevidaoTimeUukausi sitten
    • Glad you found the video interesting 🙌💪

      Steps to PodiumSteps to PodiumUukausi sitten
  • I thought it was a medical model of the lower duodenum

    SuperTambo69SuperTambo69Uukausi sitten
    • 🤣🤣🤣🤣

      Steps to PodiumSteps to PodiumUukausi sitten
  • Thanks. How does exhaust shape affect the power valve? Another video in the making?

    ChrisNVegasChrisNVegasUukausi sitten
    • Yeeeeeeessss

      Steps to PodiumSteps to PodiumUukausi sitten
  • what about the scavenging effect???

    gorgonsplattergorgonsplatterUukausi sitten
    • I'm going to talk about it on another episode! 😉

      Steps to PodiumSteps to PodiumUukausi sitten
  • Great video! I learn something new everyday!

    Tom KohlmanTom Kohlman2 kuukautta sitten
  • Fun fact: The high pressure wave is actually a sound wave which is used to force the unburnt mixture back down into the cylinder, this gives a slight positive displacement effect like turbocharging. Darn awesome 2 strokes!!!

    A KentA Kent2 kuukautta sitten
    • @A Kent alright then so my idea of it was right. Awesome! Thanks man👍🏼

      Roman BernalRoman BernalUukausi sitten
    • @Roman Bernal this is basically what causes the power band effect, as the revs increase the power increases.

      A KentA KentUukausi sitten
    • So like ..in what way would that affect the powerband

      Roman BernalRoman BernalUukausi sitten
  • Just installed a short-straight pipe exhaust, I can tell it's faster cause its louder Yeeeeee whoooooo

    QuoththeRavenQuoththeRaven2 kuukautta sitten
  • Von braun

    Xico CharruaXico Charrua2 kuukautta sitten
  • Nice. Clear and concise.

    Zee GermanZee German2 kuukautta sitten
    • Thank you for watching!!

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • Latin English, feio d entender....

    Ricardo AlbertoRicardo Alberto2 kuukautta sitten
    • 😘😘😘😘

      Steps to PodiumSteps to Podium2 kuukautta sitten
    • Tava na cara o que era.... O complexo do vira lata!

      Ricardo AlbertoRicardo Alberto2 kuukautta sitten
    • Ui, desculpe realeza britânica 🤣

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • Trehunder cc

    Elijah WilsonElijah Wilson2 kuukautta sitten
  • Wow! If only people could use sound logic like this when thinking Earth is a spinning water pear in an infinite vacuum... LOL

    Plane TruthPlane Truth2 kuukautta sitten
  • Check out what happens when you restrict the stinger pipe at the end (exhaust gas outlet) with different diameter flow restrictors (washers).

    malibu188malibu1882 kuukautta sitten
  • nicely done. 2 stroke engines have about a 6:1 compression ratio once you figgure the ports in.... Timed Area Per Unit of Displacement... explain this next please!

    Luke WarmwaterLuke Warmwater2 kuukautta sitten
  • I ice raced Mercury sno twisters in the mid seventies and the pipes on those machines where never duplicated. Mercury even had Tipsters as modifications to enhance rpm. How to cut and shorten for a given rpm. Very high tech at the time. I believe it was Les Cahoun that developed those pipes. A talented 2 stroke engineer that ended up at OMC in their engineering room. A book called 2 stroke tunrs handbook was our bible in the racing days of design and mods. Cool stuff !

    Thomas StarkThomas Stark2 kuukautta sitten
  • Ypvs

    fastasfoxfastasfox2 kuukautta sitten
  • Wow, excellent video!! Thanks for making it!!

    Chris StevensChris Stevens2 kuukautta sitten
    • Thank you for watching!! 🙌💪

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • It's called an expansion chamber.

    Todd AndersonTodd Anderson2 kuukautta sitten
  • People love two strokes because they make hella power ALOT cheaper. Point blank.

    Tomboy187Tomboy1872 kuukautta sitten
  • In early days the exhaust pipe was also referred to as an “ extractor” and the smaller pipe at the end was the “stinger”. M/Cs sometimes came with narrow stinger openings to get more horsepower but it caused the power to fall off at low rpm so commonly the stinger was widened in diameter to get power at lower rpm and prevent a bike from ‘falling off the pipe” or losing power. There were no silencers when I stated racing.

    Jeff MartinJeff Martin2 kuukautta sitten
  • good information too bad you didn't show the picture of the early Honda Elsinore it's how their pipes used to run underneath the bike frames

    John OehrleinJohn Oehrlein2 kuukautta sitten
    • Suzuki had those too. It worked great on a track not so great on the trail.

      Michael DoseMichael Dose2 kuukautta sitten
  • How can the gasses travel at the same speed, when the cross-section gets ever larger? Should they not be slowed-down to keep the flow constant?

    Kostadin PantevKostadin Pantev2 kuukautta sitten
    • Your looking at it with the Bernoulli equation in mind, but in this case it doesn't apply. 😉

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • Very nice

    QuickDrawDQuickDrawD2 kuukautta sitten
  • in what world is the two stroke getting more popular? -- they are all but phased out - even 2 stroke scooters and chain saws are starting to disappear

    BigGuyLittleBikesBigGuyLittleBikes2 kuukautta sitten
    • That's why 😂

      Steps to PodiumSteps to Podium2 kuukautta sitten
    • @Steps to Podium nope- the USA -- we haven't had road or trail legal two strokes since the 1980's lol

      BigGuyLittleBikesBigGuyLittleBikes2 kuukautta sitten
    • You're not from either Europe, Austrália or South Africa, aren't ya?😁😆

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • спасибо мужик

    Иван ИвановИван Иванов2 kuukautta sitten
  • A good explanation to the black art of two stroke exhaust pipes.

    barry phillipsbarry phillips2 kuukautta sitten
    • Thank you for watching! 😊🙌

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • It's really crazy to think, how just change the exhaust system can completely change both the power and the torque in the 2 stroke engine

    Fauzan RamadhanFauzan Ramadhan2 kuukautta sitten
  • Only half the story

    Jimmy GellJimmy Gell2 kuukautta sitten
  • I think i have a solution to the pipe dent problem, just put a damn metal bar around it.

    Hunter NelsonHunter Nelson2 kuukautta sitten
  • 2 strokes really shine in snowmobiles, where some snowmobiles make 180+ hp while weighing only around 500lbs, and that’s stock. Mods can increase the power to weight to a ridiculous level.

    Hunter NelsonHunter Nelson2 kuukautta sitten
  • yeah it just bounces back ... its that simple.

    Joshua HarrisonJoshua Harrison2 kuukautta sitten
  • The YPVS really helped the RZ 350s get some low end torque, and with a set of good pipes and pistons and reed valves and head work you could fly.

    into the voidinto the void2 kuukautta sitten
  • Walter Kaaden was responsible for the tech originally which came directly from the development of the V1 pulse jet flying bombs from WW2. Fascinating story

    thediamondgeezer78thediamondgeezer782 kuukautta sitten
  • sorry, but per Bernoulli's eqn, the larger pipe the higher the pressure & lower the velocity. The smaller section is the opposite, lower pressure but higher velocity. PV = PV Seems counter intuitive, but that's the physics

    andrew hartwegandrew hartweg2 kuukautta sitten
    • You're right, that's how the Bernoulli equation works! But the Bernoulli equation doesn't work in this case since one of its conditions is not met: in this case, the temperature of the fluid is not constant and cannot be considered constant because there is a tempersture amplitude too big from the moment the fluid leaves tbe header to the silencer 😉

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • Excellent explanation. I've been wondering about that forever.

    OneEyeManOneEyeMan2 kuukautta sitten
    • Glad I could help! 🙌🙏💪

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • It doesnt raise compression, or at least that is not how it maximizes performance.

    HAL CASEYHAL CASEY2 kuukautta sitten
  • Just changed my power bands on my bike. So fast now!

    Justthatguy420Justthatguy4202 kuukautta sitten
  • It’s the other way around , in the diffuser (widened) the static pressure rises . In the Jet it gets lower and the speed rises !

    Reiner ResselReiner Ressel2 kuukautta sitten
  • The question is, why the fuck is it so loud ?

    siedlikmastereksiedlikmasterek2 kuukautta sitten
    • Because BANG BANG BANG BANG BAAANGA BANG BANG BANG

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • Superb

    Gaurang Sir ChemistryGaurang Sir Chemistry2 kuukautta sitten
  • Yeah I get that makes sense no?

    Rosie AnimatezRosie Animatez2 kuukautta sitten
    • Well ofc it does or your bike wouldn't start

      Rosie AnimatezRosie Animatez2 kuukautta sitten
  • So what exactly would happen if I tried to ride my 125 with no exhaust. Obviously it’ll be the loudest thing ever but what would I not have sufficient compression for powerband up top?

    Stevel PlaysStevel Plays2 kuukautta sitten
    • Yuuuuuup

      Steps to PodiumSteps to Podium2 kuukautta sitten
    • @Steps to Podium and crazy damage

      Stevel PlaysStevel Plays2 kuukautta sitten
    • Yes!

      Steps to PodiumSteps to Podium2 kuukautta sitten
  • brilliant lesson

    The ProCutThe ProCut3 kuukautta sitten
    • Thank you for watching!

      Steps to PodiumSteps to Podium3 kuukautta sitten
  • Le sigo desde Colombia

    Ronald BretonRonald Breton3 kuukautta sitten
    • Gracias tio!!🙌🙌💪💪

      Steps to PodiumSteps to Podium3 kuukautta sitten
  • Thanks we'll explained

    Michaael JacobMichaael Jacob3 kuukautta sitten
    • Thank you for watching! 😊💪

      Steps to PodiumSteps to Podium3 kuukautta sitten
  • So what about making a bike with YEIS bottles (volume before/after the carb, Power valves, tunable volume outside the exhaust throat... and a movable cone (like a funnel) shadowing the convergence, inside the expansion chamber so it can be tuned to the revs.... You could even run a U in the header pipe before the divergence like a trombone so you can tune the timing of the gas there...

    The ButlerThe Butler3 kuukautta sitten
  • Just subscribed and I am looking forward to digging into more of your videos! Turning 60 this year means nothing to me, I have four 2 strokes, two enduros and two trials, and I feel like I'm 40! But I have no problem learning from younger people and you clearly know what you are talking about! Thank you for your commitment to providing such good information! Blessings from Colorado!🙏

    Jack oJack o3 kuukautta sitten
    • Thank you so much for your comment and nice words!! I really appreciate it and I hope to see you around in thr comment section! 😃 Let me hear more about what you think about the videos 💪

      Steps to PodiumSteps to Podium3 kuukautta sitten
  • Thanks for the video. it was great. However, I have 1 question. Why is it necessary for the for the exhaust to go back and build pressure? Does it create more power, less power....what is the actual reason and would it do to the engine performance? Thank you

    Poop On-iJUNKsPoop On-iJUNKs3 kuukautta sitten
    • Thanks! The goal is to supercharge the engine!

      Steps to PodiumSteps to Podium3 kuukautta sitten
  • nice video, thanks !

    Lounge LizerdLounge Lizerd3 kuukautta sitten
    • Thank you for watching!

      Steps to PodiumSteps to Podium3 kuukautta sitten
  • I think hard enduro sucks

    LumLum4 kuukautta sitten
  • Bro good video

    Althu electronicsAlthu electronics4 kuukautta sitten
    • thanks! I appreciate it 😊

      Steps to PodiumSteps to Podium4 kuukautta sitten
  • So if it helps add compression, would doing a compression test with your pipe off give incorrect results?

    Red LightningRed Lightning4 kuukautta sitten
    • Yes!

      Steps to PodiumSteps to Podium4 kuukautta sitten
  • Good explanation thank you. Does the length of the tailpipe affect the power/performance please? I have a motobecane 99Z engine.

    barry carletonbarry carleton4 kuukautta sitten
    • Why not, try and see what happens 😂

      Steps to PodiumSteps to Podium3 kuukautta sitten
    • @Steps to Podium No just the long 1 inch pipe there is no silencer just the expansion box which can be exited at the side of the car.

      barry carletonbarry carleton3 kuukautta sitten
    • You mean the silencer?

      Steps to PodiumSteps to Podium3 kuukautta sitten
    • @Steps to Podium Thank you, We have a 50cc Motobecane 99Z engine in a little French car, I fitted an expansion chamber exhaust then a 1 inch pipe to the rear of the car about 3 feet long. With two persons you can feel some torque, I wonder about removing the pipe?

      barry carletonbarry carleton3 kuukautta sitten
    • Thank you for watching! :) Yes, it does! A smaller tailpipe increases peak power and a longer tailpipe increases torque.

      Steps to PodiumSteps to Podium4 kuukautta sitten
  • Although it's counterintuitive, according to Bernoulli equation when the gases leaving the engine first encounter the increase in diameter at the beginning of the muffler, the velocity does slow, however, the pressure Increases (not decreases, as mentioned in the video).

    dunnodunno4 kuukautta sitten
    • ​@Steps to Podium Bernoulli's principle is a simplified model for conservation of energy. It's also for incompressible fluid, but that doesn't change the fact that your theory is backwards: dynamic pressure drops, static pressure increases. It's the pressure wave that you need to focus on, not the volume flow (Bernoulli's principle is helpful in understanding the pressure changes of the volume flow which affect the pressure wave, but isn't the only theory you need to apply)

      ScottScott2 kuukautta sitten
    • Bernoulli equation does say that, but a condition for the bernoulli equation to be valid is that the fluids have to be at constant temperature, which does not happen in this case 🙂

      Steps to PodiumSteps to Podium4 kuukautta sitten
  • I wondered for many years thanks

    Mike FutrellMike Futrell4 kuukautta sitten
    • glad I could help! thanks for watching 😊

      Steps to PodiumSteps to Podium4 kuukautta sitten
  • I have a Polaris trailblazer 250 it’s a 2 stroke is there an exhaust that will make it sound better??

    JB AtvsJB Atvs4 kuukautta sitten
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