Machining the 3 Rotor for 1200 HP. Taking things up a notch.

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  • Rob Dahm about to get a cease and desist from Frito-Lay for making his own Doritos.

    Kyle KeoghKyle KeoghUukausi sitten
    • @cncaliguy09 ?

      Scared HamsterScared HamsterUukausi sitten
    • I hope you can stuff. I would by a rotor engine made by you in a heart beat.

      cncaliguy09cncaliguy09Uukausi sitten
    • Was wondering where you went Where I went Where we all are How yah been

      Jay StrumJay StrumUukausi sitten
    • 😂😂😂👍

      Armand LaurinArmand LaurinUukausi sitten
    • Ya'll laugh, but one day, Rob's gonna turn up the dorito factory, and chips are gonna fly out of the exhaust.

      asertaasertaUukausi sitten
  • A socket would have been fine as a bearing pusher right?

    Bda BndBda Bnd2 päivää sitten
  • How do your centre the plates on the cnc machine so it drills perfectly centered?

    Bda BndBda Bnd2 päivää sitten

    Bda BndBda Bnd2 päivää sitten
  • Just asking, what happened to his 4 rotor?

    DaanDaan4 päivää sitten
  • quick question seeing as you have the cnc machine why don't you take 1k-2k off the iron faces to remove that step?

    Kester 135Kester 13515 päivää sitten
  • No freezing the bearing to make it easier, no lube... NO IDEA..!

    Anthony NAnthony N16 päivää sitten
  • So you think throwing a new huge garret turbo on and just feeding it boost is going to make HP..? Do you have a torque figure, or where you want power to come on and how the curve of that power is produced..? So many factors you are missing, such as size and shape of inlet porting, the exhaust ports and how they are shaped/ported. Whether you port them upwards or down and the size will greatly determine your power curve. You have a lot to learn in terms of what will make more power easily, and what will hold you back.

    Anthony NAnthony N16 päivää sitten
  • No ROB... The manufacture of those 4 rotor shafts from NZ are out on the fazing. TDC won't be precise, its what is flogging bearings and will kill the 4 rotor..!!! IM GETTING SICK OF TRYING TO TELL YOU..! The 4 rotor shafts are not to spec..!

    Anthony NAnthony N16 päivää sitten
  • Most power for a triple rotor 1000 HP... What planet are you on Rob, are you up to speed on what's happening in the world...? Guys are making 1500+ HP from 13B's/ 2 rotors..! You really talk some stupid shit..!

    Anthony NAnthony N16 päivää sitten
  • EMS has numbers and pretty colours on it.... everything must be good..! Lmao.....

    Anthony NAnthony N16 päivää sitten
  • Don't peck with a reamer, spindle speed should be half of the speed of the drill and feed twice as fast. Also you should be helical ramp milling and not reaming at all, then you can adjust your diameter and slowly get it exactly where you want it.

    Chase GurganiousChase Gurganious21 päivä sitten
  • You need to machine a fixture plate with pins sticking up in stock oem locations so you can drop a stock housing on your mill and fire away. You will then have perfectly aligned dowel pin holes

    tajellytajelly28 päivää sitten
  • This series should be called "The Art of Drilling a Hole" by Rob Dahm.

    Robert IrvineRobert IrvineUukausi sitten
  • So am I seeing this correctly that you're using the Renishaw probe to reverse engineer everything?

    NischNischUukausi sitten
  • rob love your work keep it up. max from Australia

  • My man looking brave right there with that carbide bit on the 180 degree die grinder and no tape on the rotor plate woe... Mannnn I tell you IM a pro at the things I do best but I ALWAYS take precaution protocols bcs imo a pro isnt just about the odds you may or may not make a mistake... its about the guarantee of never making a mistake. Hmmmm EDIT: I noticed he used tape but that was later down the line lol...... You know what they say, ppl always use tape AFTER something gets messed up lol. I didnt see anything but I have a feeling something got nicked or scratched bcs he wasnt using tape in the beginning.

    Auto Body EverythingAuto Body EverythingUukausi sitten
  • I love rotaries but Im bot a rotary owner so Im learning a lot. Too bad I have not seen this level of mechanical fabrication for 4 cylinder or just piston motors bcs thats more what I mess with. I love the education here Im learning lots but I cannot apply it to inline piston applications.

    Auto Body EverythingAuto Body EverythingUukausi sitten
  • You'd be proud if how far I have come on my 10thAE 2nd gen,nothing like you but us white guys gotta rep as much as we can lol

    ThatguywithnopancreasThatguywithnopancreasUukausi sitten
  • 27:53 It's a B... earing!

    Kristoffer LinderKristoffer LinderUukausi sitten
  • Hey Rob, are the ports that you are porting now the same as on the 3rotor before it died ?

    A- XISTHA- XISTHUukausi sitten
  • Rob need to look into work holding and making fixtures. When you get good efficient work holding, you can bust out identical processes and pars quicker and easier. Soon enough you’ll be fully making your own housings and irons!!

    Nendo CrescendoNendo CrescendoUukausi sitten
  • I keep thinking that the damn 3 rotor soumds like a fcking RB26 😂😂😂

    Cathal OwensCathal OwensUukausi sitten
  • You should really collaborate with Tavarish on that three rotor he is putting in a ferrari

    Michael MackamanMichael MackamanUukausi sitten
  • “I’m cutting into a virgin *big pause*” Rob -Dahm 2021

    Isaac WilsonIsaac WilsonUukausi sitten
  • stop going 100% rapid on first try like wtf you gonna fuck the machine soon

    Marcus NilssonMarcus NilssonUukausi sitten
  • should be shallow, proceeds to use the full length of his shaft.... perfection

    jamesjamesUukausi sitten
  • Rob, i am not an expert what so over (and can't realy tell from your vid) but if you a are using a reamer, drill your holes (for this diameter it is 0.2mm i believe) under nominal. Then ream with a low rpm (say 800/900ish) and feed with about 0.15mm/revolution. For the steps don't retract with rapid retraction, but use about 10x the feed rate.

    d3amonicusd3amonicusUukausi sitten
  • How are these tight tolerances and clearances going to be affect by heat cycles? Will they shring/expand/distort?

    Richard PruettRichard PruettUukausi sitten
  • 0:14 is what rotaries in racing games should sound like

    Mr.MMr.MUukausi sitten
  • 5:50 Wait... Did he just used his right hand to write? Where is he from?! :o First American recorded on video!

    Stanimir RankovskiStanimir RankovskiUukausi sitten
  • Perfect to learn on = the previous owner was incompetent....

    Paul AguirrePaul AguirreUukausi sitten
  • you need a f0cking torque converter bro... so your takeoffs are less fucked on driveshafts for one, and so you can really make it scream, drop the clutch, then lock up the torque converter and shift normally. lockup century with the 4 rotor, coming soon?

    BCzepaBCzepaUukausi sitten
  • there ever gonna be an fc on this channel?

    Devin JohnsonDevin JohnsonUukausi sitten
  • So I guess what I learned from this is if my living room has become a home gym the answer is diamonds (thanks FIworld!). Never had so many ads in a vid. Ever. It's actually quite hilarious at this point...just about every other minute.

    PearlBlueSoulPearlBlueSoulUukausi sitten
    • I can’t see how many ads FIworld auto suggests. How many were there roughly? I can manually put ad points and make them less than youtube does automatically

      Rob DahmRob DahmUukausi sitten
  • Rob, you are so blessed to do what you have passion for! In these Covid times... I doubt my job in IT. Thanks for all of these great videos, really cool🤜

    Bas eBas eUukausi sitten
  • do an rx8 renesis build in the future

    ImAnActualPotatoImAnActualPotatoUukausi sitten
  • All this talk about design and engineering of which he doesn’t know anything about. The final products speak for themselves......piles of shit.

    Lloyd V.Lloyd V.Uukausi sitten
  • hey Rob, i saw you left the measuring tools in the machine. If your tool holder is not outside the machine, it will suffer from the coolant. It then remains wet and then gives malfunctions. I also work in a CNC milling company :)

    TheJeanParisTheJeanParisUukausi sitten
  • Can you please address the EPA trying to kill our car culture and community and some of our lives if you do not know the EPA is trying to ban everything car related including tuning, boost and many other things. We are under attack we need to address this now before it becomes too late. We can counter this if we gain Support for the RPM act the link to SEMA's page on it is listed below. Please give support so we can keep the car culture alive. To give your voice and save this thing we love go to

    thomson himesthomson himesUukausi sitten

    AAUukausi sitten
  • Sticks finger in wet hole Rob: yeah that feels soooo good

    nissan 240sxnissan 240sxUukausi sitten
  • 👍👍👍

    noldhy 1111noldhy 1111Uukausi sitten
  • Bearings would be easier to install if put in freezer for a few hours, temperature differential would shrink the bearing to fit housing and most likely wouldn't need the press to install them

    Nik BartelsNik BartelsUukausi sitten
  • Typically with reamers, you feed twice as fast as a drill and spin at half the speed. That would help it cut to size and reduce reflection

    Derek CookDerek CookUukausi sitten
  • Always love watching you get new things to advance your work and seeing progress from it keep up the good work.

    james cloudsdalejames cloudsdaleUukausi sitten
  • That new toy look on Rob's face.

    Steve PetersSteve PetersUukausi sitten
  • What if Rob Dahm makes a miniature rotary engine from the aluminum scraps he has , like all the parts including rotors, to put in an rc car

    Danies AlexDanies AlexUukausi sitten
  • Why no boring bar?

    Luke FLuke FUukausi sitten
  • I've been making rifle barrels on Haas cnc machines for over 20 years. Please take my knowledge. Slower speeds on the reamer. Adjust feeds as needed. But, sub 800 rpm on the reamer if you want it to last. Jus a tip.... and, only the tip mind you. LoL Also, stub length tools are your friend. Other than that, your clearing and machining seem to be great.

    David BlanckDavid BlanckUukausi sitten
  • One rotor Insight?

    zakura ayamezakura ayameUukausi sitten
  • On this episode of rob dahm, rob has repeated issues with penetrating deep enough

    OtterConnorOtterConnorUukausi sitten
  • Its called chatter not vibratey thing, I can machine and I want to come play Rob….. I need to build one

    ErocErocUukausi sitten
  • 31:16 - 31:19 is the real life version of the youtube comment experts

    ValentineValentineUukausi sitten
  • One Rotor gokart.

    ssplintergirlssplintergirlUukausi sitten
  • Rob went from Billet rotors to Billet tools :D

    ValentineValentineUukausi sitten
  • Rob throw that sweatshirt out before that stupid lace gets caught in something and you get hurt.

    the shurthangthe shurthangUukausi sitten
  • temperature of the material is also VERY important when machining to the tolerances you want. coolant temp control can help get more consistent cuts

    andrewdini pandaandrewdini pandaUukausi sitten
  • I always rig up a vacuum cleaner hose on the other side of the port I am grinding with a safety glasses and a mask. Those filings are hell. Car Club for Turbo Car Car Club for Turbo Car OwnersUukausi sitten
  • when are you getting Billet Rotors Billet Rob?

    andrewdini pandaandrewdini pandaUukausi sitten
  • Awesome work Rob! Cant imagine a better Turbo and IC engine combo than a multi chambered Rotary! Msg on FB re rotors. Car Club for Turbo Car Car Club for Turbo Car OwnersUukausi sitten
  • Is it already bridgeported? If not please do

    Lucifer IILucifer IIUukausi sitten
  • Dont put your face un front of your piece on the press lol x)

    RemiRemiUukausi sitten
  • Looking for more power??? Can you take any of these builds to the track already ... you havent even proven you can drive any of these cars with any power... to be called a race engine you actually have to race

    dsaucedo0303dsaucedo0303Uukausi sitten
  • I like how a "new" fat iron is more expensive than 80% of the price of the entire engine.

    Nicolas GibsonNicolas GibsonUukausi sitten
  • It should be easier to get better surface finish on aluminum with a 4 flute endmill.

    Tyler McGrathTyler McGrathUukausi sitten
  • This guy went from amateur tuner to a master

    aurora2319aurora2319Uukausi sitten
  • Have you ever brainstormed a bigger wankel rotary layout? Say maybe a 1.5 scale 3 rotor? More air more fuel more boost etc. 🤷🏻‍♂️ if anybody has the brains (and outstanding hair) to pull it off it’s you sir.

    Big Dad EnergyBig Dad EnergyUukausi sitten
  • Oh God! I love PRECISION! I an hear it, I can feel it, and occasionally see it. Tolerances ROB! Seems like too tight ain't healthy for "Dinosaur Engines"

    Gordy KilcollinsGordy KilcollinsUukausi sitten
  • "Blake martinez" has a good 13b rebuilding video.

    Creator 262Creator 262Uukausi sitten
    • And "fullboost"

      Creator 262Creator 262Uukausi sitten
  • Seeing ROB Measure the blocks is refreshing. Get those damn dowel holes right! Tolerances are everything!!

    Gordy KilcollinsGordy KilcollinsUukausi sitten
  • All those half sloppy holes will allow flex

    BIG SMOKEBIG SMOKEUukausi sitten
  • long time subscriber, Love your channel, one request though MORE dyno's/destruction/and Chaos like the old days lol

    Bryan OldakerBryan OldakerUukausi sitten
  • What you need is a lathe Rob.

    SpaitzoSpaitzoUukausi sitten
  • Love the video

    RotaryNationRotaryNationUukausi sitten
  • Hey Rob, how does a twin turbo 1 Rotor Miata sound?🤔

    JeebuzJeebuzUukausi sitten
  • How bout you drag race one day cause power isn’t everything if you can’t go fast

    junior damotajunior damotaUukausi sitten
  • What is the life expectancy of these wankle engines? You just built the 4 rotor and now its tore down for the third time? Does making power destroy these engines? If they last as long as a Bic lighter and little more, Whats the point? I have built 750 HP N/A V8's and 950 HP turbo V8's that lasted 10 + years so far with out a single issue. You built a 4 rotor that made awesome power but its down again? What is happening to your engines? Are they really that unreliable at the power levels you made? I am a machinist and have a few 13 B's in my shop I was thinking about trying out building a 3 rotor engine for a sand rail. But if they have a 6 month life expectancy, Why bother?

    Tyrell BoggsTyrell BoggsUukausi sitten
  • I wonder what the max HP you could get from a one rotor? single rotor?

    Colin StuartColin StuartUukausi sitten
  • it looks like you are using mostly uncoated endmills for all of your work. As a machinist i would suggest buying some coated 5 flute endmills for anything other than aluminum, you'll end up with much better finishes and longer tool life

    Michael ShortinoMichael ShortinoUukausi sitten
  • Yes, Rob is using a framing carpenter's Speed Square to mark a precision bearing in an engine; but then again, we've seen him using a claw hammer when a ball peen or dead blow mallet would be better. ...that's Rob. 😉

    John GuilfoyleJohn GuilfoyleUukausi sitten
  • 2:55 barely a bearing indeed.

    Darvin BlackDarvin BlackUukausi sitten
  • 36:10 weird technique but it gets the job done well!!

    Jacob WebbJacob WebbUukausi sitten
  • Rob needs one of those rotor balancing machines like Angel Motorsports has.

    tippyc2tippyc2Uukausi sitten
  • On the term "spinning a bearing". In my opinion its worded like that because a sliding surface bearing is meant to give a better/replaceable riding surface. I would say roller bearings are supposed to spin, but not surface sliders. Thatd be bad news bears.

    Chandler FrazierChandler FrazierUukausi sitten
  • Rob if you died right now would you die happy?

    coco Boococo BooUukausi sitten
  • And as you guess Rob stopped using oem studs from now on for his projects.. ❤️

    TEO WAYTEO WAYUukausi sitten
  • the 3 rotor sound as good as ever.

    DeathCAPDeathCAPUukausi sitten
  • you don't even know how happy it makes me to see rob using big bad ass machines like the cnc to make his own engines and not need to rely on some bullshiter shop somewhere.

    Keegan SpencerKeegan SpencerUukausi sitten
  • When you were cutting the press your were cutting in the wrong direction the machine shouldve been going counter clockwise or you get thay chatter like how you got. Think of how a skill saw cuts the cutting edge going against the feed

    bsmb091011 Bbsmb091011 BUukausi sitten
  • Rob 18:46. Me, heavy breathing

    fuelnfire92fuelnfire92Uukausi sitten
  • I love your ingenuity!! 😁Fab Form factor! This like a kid, watching his favorite movie. Keep up the good work.

    Mket DesignMket DesignUukausi sitten
  • i saw this coming rob dahm spec dowel bolts nice

    Steven WechterSteven WechterUukausi sitten
  • Sometimes you like a little vibration in your tool, just not when you're machining parts.

    iRdMooseiRdMooseUukausi sitten
  • Will the cast and aluminum rotor parts. Have the same issues with cooling at different rates as they do with most inline, V, engines?

    JTTOJTTOUukausi sitten
  • Some of the chatter is from the stick out on that end mill

    Mark CorkeryMark CorkeryUukausi sitten
  • When you are done practicing you must try kennametal. They have the best inserts i have tried for turning, milling, and their endmills can take so much abuse it is scary 👌

    Thomas DegnThomas DegnUukausi sitten
  • Yeah ! Fueltech !

    AeroGarageAeroGarageUukausi sitten
  • bearings or bushings?

    orion khanorion khanUukausi sitten
  • Rob don't take the iron out of the fixture to test fit stuff unless all of the holes you make for that operation are complete. You'll stack up tolerances that you really don't want.

    Noah KachadurianNoah KachadurianUukausi sitten