Building the 12 Rotor Exhaust with Legos

Подписаться 1,2 млн

Просмотров 322 тыс.

50% 1

Try Rocket Money for free: RocketMoney.com/robdahm #RocketMoney #personalfinance
T-Shirts: www.dahmracing.com/collection...
Patreon for Build Videos: bit.ly/2koiw8G
Instagram: bit.ly/RobDahmIG
Subscribe to Rob Dahm: bit.ly/1OAN9yi
AWD 4 Rotor Video Series: bit.ly/2QiFduE
Music:
------------------------------
Digital World by Alex-Productions / alexproductionsmusic
Creative Commons - Attribution 3.0 Unported - CC BY 3.0
Free Download / Stream: bit.ly/3NtoaS7
Music promoted by Audio Library bit.ly/48foZpB
------------------------------
Drifting Away by Devyzed / devyzed
Creative Commons - Attribution-NoDerivs 3.0 Unported
Free Download / Stream: bit.ly/3Ts1zZY
Music promoted by Audio Library bit.ly/3TlOQbf
------------------------------
Did You Know Better by Pyrosion / pyrosion
Creative Commons - Attribution 3.0 Unported - CC BY 3.0
Free Download / Stream: bit.ly/4ajO4BB
Music promoted by Audio Library bit.ly/3uYG4ps
------------------------------

Авто/Мото

Опубликовано:

23 янв 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 749

@matthewdeatsch2787 3 месяца назад

Hey I'm a machinist at my day job and just FYI .004" runout on ER collets is WAY more than it should be. If you get name brand collets and holders you should be well under .001". It was cool to see you use the exhaust legos though, Ive always wondered how well they work.

@robwigglezz944 3 месяца назад

Agreed.

@spdcrzy 3 месяца назад

Hell, even a thou of runout is too forgiving at this level of insanity. I'd argue for five tenths, no more.

@travisolander4749 3 месяца назад

I'm pretty sure the guy with the garage and all the one-off, custom builds knows what he's doing.

@802Garage 3 месяца назад

@@travisolander4749 He is the first to admit he isn't a machinist and is always learning. He def won't mind advice from the pros.

@joealex65 3 месяца назад

@@travisolander4749 For the most part he does, but he LOVES good advice from the experts, that's how he learns new stuff, it has always been that way for him.

@fordcent 3 месяца назад

My depression is cured every time a 12 rotor video comes out.

@pleite567 3 месяца назад

This! But to bad its just temporary 🤪😂

@brianmunyongani5172 3 месяца назад

@@pleite567 😮😊😅😅😅

@fordcent 3 месяца назад

@@pleite567happiness is temporary, 12 rotor is forever

@phillgizmo8934 3 месяца назад

It's not a depression then, it's a addiction.

@squidikka 3 месяца назад

@@fordcent 12 rotor is happiness, therefore happiness is forever

@chris661 3 месяца назад

That long header will likely need bellows or something to account for the larger amount of expansion along its length compared to the other runners. I was working in F1 exhaust systems the year we changed to turbo engines and even on those short headers we had bellows. This was mainly due to the tight angles we had due to packaging constraints and the outside of the bends getting much hotter, therefore growing more. Does look a little tight for packaging some bellows in there but I’m sure you guys will manage it! This thing is going to be insane when it’s done.

@feenyx6394 3 месяца назад

Now there's a documentary I'd love to see

@podulox 3 месяца назад

@OP - You Sound Like Rick...

@Sebastian-zf7di 3 месяца назад

teasing everyone with that "turbo, sorry, exhaust"

@ScaredEdit 3 месяца назад

And the Garrett shirt

@mildxdrifter243 3 месяца назад

In one the first videos with this motor he talks about putting turbos on it

@fayrebrand1402 3 месяца назад

it would make me sad put a turbo on a NA 12 rotor 2000-2500hp (and he said « for boost sorry for exhaust »)

@christophercantwell1412 3 месяца назад

@@fayrebrand1402 he later says turbo at 8:50

@gordythecreator 3 месяца назад

My 85yr old Pops & i don't have much to talk about, but THIS MADNESS always makes an easy conversation starter. Weight is the only complaint from the Old SCA-Racer.

@Token_Black_Guy 3 месяца назад

Talk to that old man more I wish I did the same for mine

@Jack_Hurst_ 2 месяца назад

Same me and my dad although ur probably same age as my dad

@robwigglezz944 3 месяца назад

A common machining process to flatten surfaces is to have it on 3 points with a 4th adjustable point to allow the material to spring back in after the first cut. You'd be surprised on how much stuff will move after machining off the scale surface.

@thomasbaxter8138 3 месяца назад

tool maker chiming in id square it off on a bench grinder. lol

@mostlymotorized 3 месяца назад

You'd be surprised at the difference in warpage Machining 303 vs 304

@thomasbaxter8138 3 месяца назад

@mostlymotorized didnt catch him say that now that you mention it

@thomasbaxter8138 3 месяца назад

@mostlymotorized didnt catch him say that now that you mention it

@gabbermaikel 3 месяца назад

stainless wil warp like shit any way. You think you have a flat piece of stainless? Wel try again after machining, or welding for that matter.

@tristynleetl 3 месяца назад

“For boost.. I mean exhaust” - bro if you boost the 12 rotor, I’ll cry joyous tears of blood

@halofreak1990 3 месяца назад

It's not going to make 5K HP N/A, so for its intended application as a powerboat engine, it'll have to be boosted

@kabenhanson5878 3 месяца назад

at this point, we would no longer be measuring efficiency in miles per gallon, but perhaps gallons per mile haha

@802Garage 3 месяца назад

Interesting to see the approach they took before. Exhaust crossed between the intake runners from the center. Definitely not ideal for heat management. This approach will be much more efficient for the turbo... I mean exhaust... To not heat the intake runners. Really cool stuff as always, Rob and team!

@Just_A_MG 3 месяца назад

Was so cool meeting you at PRI, crazy to think all of this was going on behind the scenes while you were there. Thank you for the opportunity!

@eriklarson9137 3 месяца назад

Yup, me too.

@brent5832 3 месяца назад

“Here’s the first one. The second one is coming up next.” Pure gold.

@marktverskoy7927 3 месяца назад

Innocent bystander here, but when you make the manifolds don’t forget to account for clearance for wrenches/extensions to get to all the fasteners! It would be a tragedy to go to all the effort designing and building these pieces only to find you can’t get to a fastener because a header is in the way. You’re doing wild stuff guys, keep it up!

@scorchpowdispenser 3 месяца назад

So happy to see @ fabricationfather ❤

@Laffatit 3 месяца назад

Rob Dahm is the Mike Patey Of automobile. I love to see his passion for the rotary and the meticulous approach to everything!

@michaelgoldberg4000 3 месяца назад

Since you are gonna be making your own crank shaft, or at least working with one where you can change the intervals however you want, you don't absolutely need equal length exhaust headers. Play with the firing intervals to suit your design needs, in a 12 rotor engine it won't matter much anyway and you can save a lot of piping weight.

@changes8 3 месяца назад

Yes. Make it TT 12 rotor. The mad scientist continues his wild experiments 😂

@Bdude1111 3 месяца назад

Glad to see Isaiah in the vid! He hasn't been in/mentioned the last several videos and Rob posted on Instagram a few weeks ago that he was looking for a fabricator. I was getting nervous that he left.

@aserta 3 месяца назад

This entire process is very entertaining to watch, interesting too. Love it when someone's between "discovering new pathways" and "applying knowledge they learnt". Awesome stuff!

@mickaeldrouin9452 3 месяца назад

Yoooo it's so gooood to see Isaiah back

@taylorpratt6287 3 месяца назад

Rob have you considered doing more off a log style exhaust manifold? You’d be able to pull the exhaust further from the intakes and have a bit more room for heat management

@DustinHasVideos 3 месяца назад

I’m not an engineer or exhaust expert, but this was my thought as well. It seems like with the space constraint it would be the best option

@itsseb359 3 месяца назад

I think depending on firing order, there can be some substantial power gains with long tube headers vs log style, (similar argument to equal vs unequal length) if it fires like a cross plane, then I'd agree that a log style exhaust would maybe make more sense, however typically a log manifold is more turbulent leading to less flow

@easygoingdude9990 3 месяца назад

So happy to see Isaiah dude

@LavshBeatsTMlavishbeats 29 дней назад

Can’t wait to see how much power this thing makes

@nickalderman5943 3 месяца назад

I feel like that middle manifold would benefit from a 4-2-1 design that not only allows for scavenging, but also a slimmer form factor. I imagine you've already been down that rabbit hole though as this was filmed months ago and I am no engineer lol

@2ARM2 3 месяца назад

i feel like with the space constraints though getting a nice equal length would be difficult no?

@michiganengineer8621 3 месяца назад

I was thinking the same thing about a 4-2-1 design. And then he "slipped" and said the word turbo. That made me try to picture THAT plumbing job . . .

@2076649 3 месяца назад

@@michiganengineer86213 100mm snails!?!? Dahmn

@shize9ine 3 месяца назад

4-1 Manifolds would be so much easier but wouldn’t sound or look as cool.

@DJKr15py 3 месяца назад

@@2076649why not 6 and aim for top fuel dragster territory?

@joshuawinegar4303 3 месяца назад

Just a thought, and it would mean more machining, but you could make the 4 center exhaust flanges have a built in angle. You could machine the port to come out vertical!

@trustfire 3 месяца назад

Exhaust legos are genius!

@brianrainey2739 3 месяца назад

LEGO. There is no S. Ever. BTW, awesome that you have teamed up with RocketBunny.

@podulox 3 месяца назад

EVER!

@SergeyPupkoMusic 3 месяца назад

RocketMoney lol... But I'm sure Rocket Bunny would be open too. 😂

@TheSilverShadow17 3 месяца назад

Then how would you describe multiple of one object if you really believe there is no 'S' in Lego? People say Legos out of habit or because it's plural context.

@brianrainey2739 3 месяца назад

@@TheSilverShadow17 Lego is a brand name. Lego bricks are what you construct with. Bricks is the plural. Saying Legos is primarily an American thing for some reason…

@TheSilverShadow17 3 месяца назад

@@brianrainey2739 As an American myself I've been under that impression myself until upon realization. I don't get why people don't say Lego bricks as opposed to the basic 'Legos'

@trevormoore4456 23 дня назад

It's cool as heck watching you run CNCs!! I CANNOT wait until you start thinking in the world of metal AM!!

@fionnmcmahon-grace7065 3 месяца назад

Thanks for the 22.5 minutes of dopamine Rob!!

@JoeMadds0 3 месяца назад

Fabdaddy Isaiah is back! I was getting worried after not seeing him the last couple months.

@diegofranco8276 3 месяца назад

Was wondering what happened to him. Great to see him back tho!

@hugojeller 3 месяца назад

RIGHT? Every video I was scrubbing the entire thing just to check on him lmao I didn't even watch this video and scrolled to the comments haha

@PaddyQuiggin 3 месяца назад

Such a relief, I was so sad when I thought he was gone

@MattMoeMedia 3 месяца назад

I think I’ll have a stroke hearing this start up for the first time, very excited rob! Been watching all these videos!

@leonanthony7007 3 месяца назад

Only channel were i drop everything to watch

@zeadlots 3 месяца назад

The heat is going to be crazy. Best of luck!

@Tclans 3 месяца назад

That is so cool. It is Lego actually, it says on the box 😆👍🏼

@boxcarbro3043 3 месяца назад

Exciting to think what this engine will sound like.

@ttsupra87 3 месяца назад

I've wanted this kit for a while. The money saved in time for design is so worth it

@krusher74 3 месяца назад

should have designed it in cad, you could 3D print prototypes and cost less than $750.

@vadimm6432 3 месяца назад

I really hope this is going to be a TRIPLE TURBO setup!

@kennethparker573 3 месяца назад

Make a log manifold for the center exhaust and keep a lower profile for the intake

@hunterjames8251 3 месяца назад

I enjoy Ethan’s segments and hope he gets more comfortable with the camera. Also good to see Isaiah back, maybe he’ll help with that lol

@jimhimes3506 3 месяца назад

Ethan good job having your hand on the estop. You never know when something can go wrong on a newish setup and finding the estop when you’re panicking due to a crash can be a bit daunting

@tekia9233 3 месяца назад

This man is carrying rotary's legacy on his back❤️❤️❤️❤️ Love you Rob.

@kita1318 3 месяца назад

the definition of "trust the process"

@MikePruszkowski 3 месяца назад

Aluminum composite sheet is in your future (heat shield) Banger video 👍

@diano1987 3 месяца назад

I want to see an f1 style race with 12 rotors and Rob as the FIA leader.

@mccullummedia 3 месяца назад

Those lego like exhaust pieces are so cool!

@jgq5 3 месяца назад

Man please cure my addiction to your 12 rotor😂

@bobby43rocks 3 месяца назад

Rob and team, I'm BEGGING you to try to get a 12 to 1 exhaust for this thing. I know that the engineering challenge will be near next to impossible, but based on the videos that you guys put out, I'm certain you guys can do it

@TheBCninja 3 месяца назад

If it's going turbo, I don't know if it would be possible to go 12-1. First off those primaries are large so the collector and subsequent flange would be massive. Second, the turbo would have to be off of a space shuttle to be sized for 12 rotors.

@floodo1 3 месяца назад

This is gonna be 3 turbos watch

@TheBCninja 3 месяца назад

@@floodo1 Specifically three Garrett G57-3000 106mm turbos :)

@thefunniestfarm4731 3 месяца назад

@@floodo1 Yup, I expect no less than 3 turbos.

@ImKairyu 3 месяца назад

Saw DDE using these and I knew you would get your hands on them for this project!

@Zdub811 3 месяца назад

I thought the same thing… Mike Essa is a DAWG

@Rhainee 3 месяца назад

He said boost. What insane turbo setup is this mad man planning!?

@Barton_Motors_Ltd 3 месяца назад

This is gonna be wild

@animal_engineering 3 месяца назад

Looking good. when it comes time to transfer the bends to tube, keep the ice modelling kit away from acetylene. I accidently spilt my bottle over and it fused a bunch of them together. It is good for when they split in half to join back up though.

@Silvia_Jay_S14 3 месяца назад

The Rotary king 👑 at it again.Like they say only Rotary be long in a RX7 or RX8.

@FreddyKrugerGloves 3 месяца назад

Cant wait to see this engien in action 🤩🤩

@NagronCZ 3 месяца назад

I dont have notifications on this channel, yet somehow I still click on all the vids the minute they drop. Always makes a day better

@Maximum_777 3 месяца назад

I still can't believe the 12 rotor is real, it's just so crazy.

@budthecyborg4575 3 месяца назад

These videos are ASMR made of mechanic jargon, he can talk forever with the same tonality and cadence and it becomes and auditory massage.

@Musclecarera69 3 месяца назад

Love this, can’t wait to see how you deal with the collector and how you’re going to deal with scavenging of the exhaust pulses. Don’t know how much scavenging affects Wankel engines.

@randominternetguy 3 месяца назад

Why scavenge when you could boat motor?

@Big_Fe11a 3 месяца назад

No need to scavenge if it's going to be forced induced.

@Musclecarera69 3 месяца назад

@@Big_Fe11a engine pulses still cause issues with forced induction.

@savydude1 3 месяца назад

Great build... :) *Check out the Mercedes Gtr....the intake is the exhaust and they run outside air over the centre "V" to cool the turbos and exhaust.* You could do something similar.

@ftovr2957 3 месяца назад

Seeing where the runners have to go, you appreciate the insane difficulty of packaging this. It's like trying to cram a V12 into the space of a V8.

@Grimm-Gaming 3 месяца назад

How about the kid sticking the v12 in his miata? Hahaha

@ftovr2957 3 месяца назад

@@Grimm-Gaming True! But at least in that case, there aren't any exhaust ports in the valley 😂

@Sun-ut9gr 3 месяца назад

Not as far-out as you'd think, cause making a V12 the size of a V8 was done! Look up the W12 from VW/Audi. It's wild, and it's not even the biggest one--they made a W16 and stuffed it in a Bugatti 🤣

@yutub561 3 месяца назад

Clean your table before your second op on the mill! any tiny chips or coolant underneath will throw off your flatness

@medalami17 3 месяца назад

I love these cnc videos, because I recently had classes of g code. I haven't studied it for like 3 years, so this combination of classes and rob's videos is a great refresher lol

@PossumSwanger4 3 месяца назад

Been watching for awhile now since I saw you on this vs that.. the stuff you do with these rotary engines absolutely amazes me man! Great stuff!

@Jrakula10 3 месяца назад

always a joy to see uploads on this channel

@rhoninence4654 3 месяца назад

I could not imagine trying to get an equal length for the exhaust with all of those tubes. it'd look insane

@ethanruedinger1630 3 месяца назад

Let’s go Rob! I have been absolutely loving the content lately and I’m super excited for what comes next

@ethanruedinger1630 3 месяца назад

Someone who comments “I’ll do as many push ups as this comment gets likes” or a fun fact of the day would probably get more traction than this

@clearskies8098 3 месяца назад

Great video Rob, keep up the hard work. It’s definitely paying off. Cant wait to see it finished!!!!!!!!!!😊

@hahaha12345678993 3 месяца назад

man, i cant wait to hear this thing run

@jacobnewman3152 3 месяца назад

Can't wait to here this thing start!

@AndrewRzymski 3 месяца назад

cant wait to hear it run!!

@KaineVarley 3 месяца назад

@Rob Dahm, it's always such a surprise when your videos end... Always makes me laugh... Love it.

@jonasjohansson1511 3 месяца назад

Never have i repeated the words "log style manifold" in my head before in 20 minutes.

@roboman2444 3 месяца назад

A scan of the engine (or a quick and dirty model just made with measurements) and some cad for tubing would work great here.

@Jessen_2002 3 месяца назад

You should buy an oil skimmer for your cooling water, great video 🙂

@mrsomething0075 3 месяца назад

Wow! Im so amazed to see the progress of this engine. I am super invested to see the future of rotaries! Cant wait to see this in a car and hear it run! Regards from South Africa.

@StarPower999 3 месяца назад

Seeing rob put his fingers down there to grab the tool really shows how big this motor is, easy to forget how big it is in the video

@BorisSpark 3 месяца назад

Avoid Pi cuts like wild fire, lose of flow velocity due to imperfection on the inside, each weld brings a weak spot (a point of possible failure) due to the heat affected zone and there is so much more, building an exhaust system that makes power is an absolute art and it difficult af. Have fun lads and its an absolute pleasure witnessing the build! Thank you.

@polarbub 3 месяца назад

That flood coolant is looking really red xD

@jamesh5460 3 месяца назад

The whole engine just looks amazing beastie!

@cumbob 3 месяца назад

IATs gonna be crazy on this thing

@gnydick 3 месяца назад

One thing it seems a lot of car guys don't realize is that flowing gas doesn't like corners. It doesn't matter how smooth the path is, if the bend is basically a tight corner, it makes a lot of resistance.

@killersmith92 Месяц назад

Run ITBs with velocity stacks and turbo the car, enclose the velocity stacks in a ported box(s) and have the turbo(s) feeding air into them.

@simon.ad84 3 месяца назад

You guys really need to do outros on your videos🏁👍🏻

@lameboysmtb6705 3 месяца назад

Omg omg more 12 rotor content from the man the myth the legend yessir

@Digimanis 3 месяца назад

What a beauty!!!

@boochasaorusrex8231 3 месяца назад

Best rotory channel hands down!

@DustinAnderson82 3 месяца назад

FINALLY Isiah is back. Was starting to worry. I feel like he hasn't been in the past several videos

@weedfreer 3 месяца назад

Hey Rob if youre chasing microns,.you probably want to get yourself a tool presetter device. It allows you to check your tool is seated correctly in the collet/tool chuck. Not only that, some of them can look at your tool and make sure that the tool/bits mounted on it are not damaged...down to microns of precision...also. You'd be surprised what gets missed setting tiols by eye only.

@lukelikens2057 3 месяца назад

This has to be the best rotary engine build on the Internet

@streetlifetv9241 3 месяца назад

Knowing how much rotary engines love air that thing is going to be a pair of 98s

@levilueth7778 3 месяца назад

Can't wait to see more

@brianouwersloot 3 месяца назад

Great stuff as allways sir

@billyking722 3 месяца назад

Again another very interesting video on a very complicated inlet and exhaust system more to come I am sure thanks

@Hero3life 3 месяца назад

So damn excited to watch this thing fire up

@jaysonG2010 3 месяца назад

3 turbos for the win🥶

@adamlancaster5364 3 месяца назад

love the N. Custer Rd sign 😂😂😂 gotta keep some Monroe with you!

@beatsbymooncricket1042 3 месяца назад

a surface grinder would be ideal to get those flanges flat as possible.

@mecabe5137 3 месяца назад

Been crazy weeks of work and Rob's videos just recharge and boost back up my dopamine level for real! So happy to see Isiah back to action after so long and dayum! Rob should get Ethan talk more in the camera, it's good to see him more instead of just silently working behind hahaha