Making a TWIN RC Wankel Rotary Engine - The Crankshaft (Eccentric Shaft)

22. nov.. 2020
2 429 585 Ganger

Ever since I made the video with the starter modification on my O.S Wankel engine, I wanted to make a multiple rotor assembly. Last year, I found a second one, new on ebay and I didn't lose the chance to buy it. I know many of you will ask me why not a 3 or a 4 rotor engine? It would be absolutely crazy and beautiful, but the cost is really high (almost a grand each) and the complexity is much higher for my skills. We'll start with the 2 rotor and if it works we can dream. Making this crankshaft was quite the task, because due to it's thickness, when the diameter started decreasing on machining, it kept bending slighlty. I was constantly checking with the dial indicator, and the best I could do was to finish the part with 0.02 runout. I could have used a steady rest, but I don't have one at the moment. Also one of my concerns is that I won't heat treat it as it would bent to the point that it'd be unusable. Heat treating is not an option for me unless there is some secret I don't know.
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    MDG gamesMDG games16 timer siden
  • Introduce us to who feeds you and does your laundry, JohnnyQ90.

    Michael AnthonyMichael Anthony22 timer siden
  • I applaud while standing!

    Pavel BoberPavel Bober2 dager siden
  • that was siiickkk

    N-JOIN-JOI3 dager siden
  • 小川精機?

    Itirou SuzukiItirou Suzuki3 dager siden
  • Turbo!

    Joachim SinghJoachim Singh4 dager siden
  • Where can i geht one of these?

    ExploitZeroExploitZero4 dager siden
  • your parts look like factory quality

  • where did you get the plans? can you please share to me?

    ClausiusClausius7 dager siden
  • 👏👏👍👍👍

    Art SiominArt Siomin7 dager siden
  • An absolute madlad. I wouldn't attempt this without a programmable lathe. You definitely deserve all the pride this development can muster.

    OmniverseOmniverse9 dager siden
  • now a mini rx-7

    Jacob BeckmannJacob Beckmann11 dager siden
  • Hi Johnny, are you interested in other unique designs there might be customers for? Excellent work! I can tell you know what you're doing! GodSpeed

    Mike NomathMike Nomath14 dager siden
  • Вертуоз.

    Alex BrandAlex Brand15 dager siden
  • What lathe is this?

    yomustdie 94yomustdie 9419 dager siden
    • It's an Optimum TU2004V mini lathe.

      JohnnyQ90JohnnyQ9019 dager siden
  • 9:08 damn thats trippy

    Mikkel lorentzenMikkel lorentzen20 dager siden
  • You’re so best 👍👍👍

    Dusty25Dusty2520 dager siden
  • I love watching your videos. I’d really love to have your machining and fabrication skill. Very impressive as always.

    Sly DawgSly Dawg22 dager siden
  • Hello keep up good work! I have a question, how can we find blueprints or schematics for this project ?

    Cengiz Eren CansızCengiz Eren Cansız24 dager siden
  • Whoa! That crank,....I get seasick just watching! Skill.

    John Ashcroft-JonesJohn Ashcroft-Jones25 dager siden
  • The bawdy ethiopia aerobically wail because cart cosmetically guard about a level africa. glossy, harsh lemonade

    Margaret MargaretMargaret Margaret27 dager siden
  • Nicely done My dads a tool & die maker I used to have the coolest paintball gun parts

    Malcolm AdamsMalcolm AdamsMåned siden
  • oh my god its so cute!!!!

    NeoIsrafilNeoIsrafilMåned siden
  • Rotary is perfect

    ADADMåned siden
  • what is the model of this lathe?

    Renato Moreira Alves MarcondesRenato Moreira Alves MarcondesMåned siden
  • Evet öyle keriz bulursanız bizede söyleyin

    Musa KalkanMusa KalkanMåned siden
  • you make a realy Good job for RC CARS, but it is interesting to See how it Works to be a 3ROTOR our a 4ROTOR emgin for a RC car!!! 👍🏼😉👌🏼 lets do it..........🤣👍🏼😉👌🏼 realy Good Work!!!!!

    EmilioLEANDRO TodoEmilioLEANDRO TodoMåned siden
  • Hi friend i need a crankshaft wanna sell the original one?

    Ali GbkAli GbkMåned siden
  • Miss my Mazda RX 7 🥺

    Dani AltairDani AltairMåned siden
  • Вы просто талантливый человек,super. Super 🙏👍💪🎁

    Евгений УнтураЕвгений УнтураMåned siden
  • Well done. Congratulations from Brazil.

    Pedro FulgencioPedro FulgencioMåned siden
  • no axial segments ???????

    niki RH Kadirovniki RH KadirovMåned siden
  • How can it be wankel and rotary when there 2 different engines all together and before I get started on I am a fully trained Mazda technician with 25 years experience

    Charlie EllisCharlie EllisMåned siden
  • Next up is a 4 rotor!

    Biscuit RacingBiscuit Racing2 måneder siden

    NoriNori2 måneder siden
  • Any plans to ever sell off some of these parts or offer custom fab work? I've got a couple of these motors already on hand and would love to buy an eccentric shaft from you.

    ragea1ragea12 måneder siden
  • Joe Pie ( has put a lifetime of machinist experience into his videos; they might be helpful. Stan at Bar Z ( makes small heat-treat ovens; couldn't hurt to ask if he'd cook your part for you.

    Jim's videosJim's videos2 måneder siden
  • This is an art of CNC machining

    Roy PratomoRoy Pratomo2 måneder siden
  • очень крутая токарка, автор красавчик!

    ololo broololo bro2 måneder siden
  • Great job, love your solution for excentric turning. I saw in another video that you plan on hardening the shaft. I think you might get into some problems, because even if you take the right precautions (e.g. heating the shaft standing upright) the part will warp and scale on the surface. Normally hardened shafts get premachined with some allowance left, hardened, tempered and then either ground or hard turned to final dimension.

    CatNolaraCatNolara2 måneder siden
  • My grandfather said the rotary engine was voracious. Is it so?

    YelloLight [SW]YelloLight [SW]2 måneder siden
  • Mini subaru boxer engine 👌

    Michael KugleyMichael Kugley2 måneder siden
  • whats the purpose of these

    Un NamedUn Named2 måneder siden
  • Id like to see it on a rx7 shell

    eyad Hossameyad Hossam2 måneder siden
  • Wow! Speechless.

    Cell PhoneCell Phone2 måneder siden
  • where can i buy one of these RC rotary engine's?

    Tony LeTony Le2 måneder siden
  • Watching the lathe alone made the video worth it. Time to get one already

    VV2 måneder siden
  • Low-key if I had the money I'd buy one if it was for sale especially that im learning to become a mechanic lol

    The Three MusketeersThe Three Musketeers2 måneder siden
  • I'm from Ukraine, Lutsk national technical university, car's and transport technologies departament, PhD. Very interest job. But, can You tell me where and how we able buy a multiple rotor original O.S Wankel engine?

    Николай КолькинНиколай Колькин2 måneder siden
  • Why the lathe dog, instead of the chuck?

    henmichhenmich2 måneder siden
  • Cmon those are some mad ass machine skills, wow

    Bringeroflight EternalBringeroflight Eternal2 måneder siden
  • Incredible work.

    SED71SED712 måneder siden
  • Lol the 1.2k dislikes are just from a bunch of people wishing they could do something that cool. Keep up the good work! Impressive.

    Nick RoppoNick Roppo2 måneder siden
  • Brilian

    Yogi muhamadYogi muhamad2 måneder siden
  • 🙂🍭

    ペロペロあめペロペロあめ2 måneder siden
  • 11:11 2001: A Space Odyssey

    Pj SlatteryPj Slattery2 måneder siden
  • .....BIG COMPLIMENT !!!! ..... such e very nice work !!! kind regards from Switzerland !!!

    joerg wiesmannjoerg wiesmann2 måneder siden
  • I wanna get one!!

    Mok TingMok Ting2 måneder siden
  • lathe master!

    Jhonangel GimenezJhonangel Gimenez2 måneder siden
  • a model Mazda 787b would be badass bith this engine

    Iron ChickenIron Chicken2 måneder siden
  • Watching you loosen those bolts in a circle instead of a cross pattern hurt my soul.

    Kur NorockKur Norock3 måneder siden

    Luca RomanoLuca Romano3 måneder siden
  • thanx.

    Mason DabbagMason Dabbag3 måneder siden
  • Holy commercials!!

    ClaytonClayton3 måneder siden
  • Lose the HSS and get yourself some VBMT finishing inserts for aluminium. These are very +ve rake carbide inserts and they are what you need to stop your surface finish in gummy steel looking like the dog chewed it. Your small lathe cannot deal with -ve rake inserts (not stiff enough) and even with HSS and mild +ve rake your SF still looks like shit. SF is determined by tool edge sharpness, rake & stiffness. There is a minimum cut pressure and if you dick with that, the tool will intermittently not cut and... well.. its the tram lines of doom for you. To avoid this you either need to increase machine stiffness (not practical), increase sharpness (for a very small machine the increase would need to be ludicrous) or increase rake. So increase rake. My machine is not much bigger than yours and heavily positive rake tooling has been a game changer for surface finish.

    evildromeevildrome3 måneder siden
  • Im a rotorhead myself and i have to say ur work is freaking awesome 😎🤙🏼

    manny1782manny17823 måneder siden
  • Great with périphéric ports, but you don't need join on the périphérie of rotatif piston ?(like on the real one ?)

    Nicolas BietteNicolas Biette3 måneder siden
  • Huge wow factor.. Your a real master at your craft. Thanks for posting.

    Mark KennardMark Kennard3 måneder siden
  • This is a really expensive hobby da3 måneder siden
  • Amazing craftmanship and skills, my friend!!!

    Maurizio ZanniMaurizio Zanni3 måneder siden
  • Оставлю здесь русский комментарий. Через год приду проверю.

    Максим БогомоловМаксим Богомолов3 måneder siden
  • Гениально!!!

    она утонулаона утонула3 måneder siden
  • Хорошая работа

    SlavicSlavic3 måneder siden
  • mmmm machining ASMR

    Tyler DeleringoTyler Deleringo3 måneder siden
  • I wanted an O.S rotary so bad years ago. They always caught my attention in the Tower catalog, but where expensive and meant for planes which I never got into. Amazing work building a two rotor! Hoping to see more in the future!

    Ben RuetherBen Ruether3 måneder siden
  • 작동 되는 모습을 보여 줘야지?

    멸망지구멸망지구3 måneder siden
  • You are lucky dude, you can spend so much time on such things .. If you lived in Ukraine, you could only think where to make money for a piece of bread and not die of hunger or disease

    AndrianAndrian3 måneder siden
  • 偶々鑑賞したけど、なにこれ!すっげ~~~!。機械工学とか全く縁がない俺でも見入ってしまいました。

    横尾ただし横尾ただし3 måneder siden
  • That is some of the most beautiful precision work wow

    Phillip BrewsterPhillip Brewster3 måneder siden
  • so now it will drink twice more oil. Great job.

    rice artrice art3 måneder siden
  • Never use sandpaper on turning lathe! It could be reason of your hands cutting off!

    Никита АндреевНикита Андреев3 måneder siden
  • Always love to see your works. What a nice e-shaft

    Helmy SetiabudiHelmy Setiabudi3 måneder siden
  • Always was curious how long those cutting/shaping/shave tools last? I was thinking like maybe 4 or 5 uses?

    Tru MaverickTru Maverick3 måneder siden
  • Это мотор от бензотримера?

    Роман ГребенюкРоман Гребенюк3 måneder siden
  • I can imagine it'll be hella loud... Wonder what RPM it'll hit though? My best guess is around 20k rpm top end, depending on your tolerances (but you seem pretty precise, so 20k is my bet)

    Ian VisserIan Visser3 måneder siden
  • if you dont harden that crank bearing area... the rollers on that bearing will eat up the crank bearing surfaces in a matter of minutes...

    Renaissance ManRenaissance Man3 måneder siden
  • Is this for sale

    underconstructionunderconstruction3 måneder siden
  • Нихуя не понятно, но очень интересно!

    Барабашка НаглыйБарабашка Наглый3 måneder siden
  • That is a real piece of engineering art. Absolutely beautiful

    PholiagePholiage4 måneder siden
  • this makes me want to design and make an engine from scratch. I'm not wealthy though so uh. Back burner for now I guess lmao

    SilverSilver4 måneder siden
  • That's impressive work. Do you think you could make an exact copy of a Bic lighter out of metal?

    Paul the PainterPaul the Painter4 måneder siden
  • 4:30 what is this thing you are tightening on?

    NysiosNysios4 måneder siden
  • Wow

    Freeblowjob forallFreeblowjob forall4 måneder siden
  • I mistake and it's done

    Swaroop ISwaroop I4 måneder siden
  • Those apex seals have always seemed amazing to me.

    GoatZillaGoatZilla4 måneder siden
  • Better at 2xspeed lol

    illuminOzilluminOz4 måneder siden
  • 787b !!!!!!!!!!!

    Unknown1Unknown14 måneder siden
  • Love what you are doing where and the between centers turning is a first class. It took me a watching a couple of times to really appreciate the cams. I've been watching machining videos this year and in particular people working through steam engine kits and all of those have eccentrics to operate the valve and NOBODY has done that the way you have. They all have crank shafts to. I don't know if you are involved with the Pocket NC or not but you are their best advertisement. I know there's 2 version of it with the spindles. If you have any recommendations on that please let us all know.

    Tony WilsonTony Wilson4 måneder siden
  • I don't understand why the middle part of the shaft (between the 2 eccentrincs) is not a cylinder? Does this shape have some double function?

    grinrause2grinrause24 måneder siden
  • we cant buy it? :-(

    Jesús Marín TristanteJesús Marín Tristante4 måneder siden