The fact that the original designer and builder of this one of a kind engine specifically reached out to Rob for this speaks volumes about how far he has come. There are so many rotary shops around the world who would kill to get their hands on this thing yet he chose the one and only Dahm. Tyson is one those guys who does not ask ''why?'', but instead asks ''why not?, when prompted with a challenge. There are so many unique one-off solutions in this engine that may seem obvious when looking at it here, yet no one else have done it. And the fact that he proudly shows off all his work instead of keeping it a secret to himself, like a lot of rotary shops like to do, is so incredibly cool. I can't wait to see what it is capable with all the modern tech hooked up to it.
Im sure thats why he went to Rob. He has totally designed his own modern injection and timing map for a 4 rotor turbocharged engine. To get the ignition timing and fuel injection to work together is something Rob has learned to do from the ground up.
The level of machining done to create this engine is absolutely mind boggling. Every 30 seconds my mind was blown. Just the cooling and lubrication of three 4-rotors in one block is insane, not to mention the splined e-shafts. Hats off to Tyson
@@petermerkin6428 i mean, rob quite literally assembled and machined most of the engine components on the four rotor. He tunes and builds his cars from scratch, hes really a mastermind when it comes to this stuff. I would consider him the rotary king.
@@petermerkin6428 As a 3rd gen automotive engineer, ( 43yrs trade life) you would be correct. One very clever man to use the footprint of a chevy, and package 12 rotors in it. No counter balancing, infinitely adjustable firing via crank clocking. Veeeerrrryyyy cool. #RobDahm you have definately been blessed by a very clever man. Me thinketh Rob will really shine light on his very clever mind also. 😉🙂👍👍
As a CNC machinist I can appreciate that this man constructed this "near flawless" masterpiece first time round! That level of precision, efficient design and highest grade materials along with innovations that improve every aspect and vulnerability that the rotary engine previously had; it makes this true masterpiece of engineering! Right down to the balance cancellations through counter-rotating the assembly, the increased torque via dual lobe firing is like an epic level of engineering 👌 Lastly I'm going to state that I saw the video clip of this engine running with a glass of water sitting on the intake......in the video he revs the engine and it doesn't even make a ripple in the water in the glass! The balance is by far the best I've seen of any combustion engine yet?
Same here this is truly a piece of art. The hours of machine time and the weeks of planning that went into this monster of a project is beyond me by light-years. This makes what I do look like child's play. This is makes rocket injector plates look like plinko boards.
As a guy who “had a Bridgeport mill” for a couple of years, I have MAD RESPECT for machinists, ( I watched some guys who supported The Cape in the 70s work) and this device is literally a work of Magic in a field of Magicians.
It's fking insane. The custom work here is insane. This guy came out of nowhere with this motor, makes me wonder what else is out there in the wild and not on youtube.
This man is clinically insane. Not only did he make a 12 rotor engine, he had one bank spin opposite to the other and balance it in such a way that he never needed any counterweights!
This has to be the most insane motor i have ever seen. The fact the builder chose Rob and his team shows the amount of respect earned from the rotary community. Years of hard work and contagious passion for every aspect of rotary race performance engineering from you Isaiah and the rest of your crew has paid off. You made me a avid watcher of arguably a niche car genre I would have probably passed on. I think a quote from a resent movie fits best : "You're where you belong".
Very few times in my 47 years of being a professional mechanic, lifelong automotive enthusiast have I ever felt inadequate mentally, but my mind is blown! Absolutely without a doubt beyond my comprehension!
Hey mate I'm with your mindset. Been a petrol head & professional auto engineer 4 over 50 years. Still can't comprehend how incredibly gifted the designer & builder of this engine is. Wow.
I half expect some Mazda rotary engineers and others to reach out to you, just because they have ideas about how to make this thing work better. It's SO unique, not what I was expecting at all.
I’m sure if he asked nicely he could get Mazda in on it. Or any other car brand. Imagine giving this to the Rolls Royce engineering team to tune and balance it for a few months
@@samuelhokanson7560 Its not gonna happen, what killed rotaries was emissions and fuel efficiency not power and reliability. Which is such a shame honestly because a sportscar or a big truck is inherently an inefficient thing to drive, so what's the point?
@@Skinflaps_Meatslapper just stop. He clearly explains it in the video and its the same reason v12s dont need counter balances or on straight sixes. Same principle applies, the rotors balances themselves out the way they are oriented..
I'm still confused about the balance... the left and right 4 rotor banks are counter-rotating, but the bottom bank doesnt? I guess it will still torque somewhat, but no more than a regular 4 rotor. At first I thought the layout was going to be like 2x 6 rotors arranged in a V configuration, but it's more like 3x 4 rotors in a W configuration.
I've never seen any of Rob's videos, never have been interested in rotary engines...yet I'm a new subscriber because this looks so damn cool and Rob seems so genuinely excited over this. Can't wait to follow this series
FINALLY!!! I read through this entire build thread probably 20 years ago!!!!!! Glad he’s finally getting recognition for this absolutely stunning build. As an engineer the cleaner something looks… the more hours spent. And this is BEAUTIFUL!!!
This dude.. is insane. The amount of engineering an thought he put into it just because he wanted to do it. If thats not amazing, then I don't know what is.
@@captaintoyota3171 No kidding man. Imagine decades of work into the rotary by the best motorsports engineers. The 787B's engine was magnificent back in the day when they started to dial it in.
This is insane. Not only that Dahm has managed to up the ante *yet again* having already blown even the most optimistic followers away, but the very engineering and potential of this engine and its creator is just incredible. Incredibly pumped for this partnership. A few years ago it would have been near impossible to believe that Dahm would be the right guy for this job, but after years of humility, listening, learning, striving and achieving, he's proven more than worthy. The trajectory has been incredible and I couldn't be happier for the guy.
Just goes to show you the human brain is still the best computer when you use it. Most people want to push a button and get a answer. Pyramids hoover dam etc was all by the human imagination of what if. Insane amount of thoughtfulness
It really is an incredible partnership. I remember studying the development pretty closely on this engine years ago. Far before UPS "lost" the original turbo 4 rotor. I been following Rob Dahm from the start of his journey but that was long after the 12 rotor disappeared mysteriously from the spotlight for years and I nearly crapped a brick when I discovered what Rob was doing with it the other day just scrolling Instagram. I seen this coming... my mind told me subliminally it would happen while pondering rotary stuff in the back of my mind watch a 4 rotor vid. I also told my mind it was stupid and it would never happen. Stupid me. Made a fool of myself 😅
Rob, you're one of the best things to happen to the rotary community. I'm not just tooting your horn or exaggerating. Having INNOVATIVE rotary technology shared in an easy to digest format (videos), whilst also being well documented is something im extremely grateful for. Thanks for taking the big step and doing this for as long as you have. I admire your curiosity and appetite for learning more.
When you go from being an enthusiast to one of the leading rotary mechanics in the world over just a few years!!!!!!!!!!!!!!!!! Congrats Rob and Co. you guys deserve to be the ones bringing that into full working order! But please what ever you put it in make sure the designers name is prominent and visible that man deserves all of the credit for designing and building that motor.
Seriously though, is everyone gonna gloss over the MODULAR rotary engine aspect? That ease of 2 4 6 8 rotor builds is a multi million idea that he should have been pitching to mazda or other third party brands.
@@R0FLC4T5 With the new upcoming rotary supplementary engine from Mazda I’m hoping they’ll properly revive the purely rotary-driven cars again, a modern-day RX-7 with a cutting-edge rotary would be 👌
Pretty damned fine engineering... must have run out of $$$ as he is using spur gears... Engine that size will be losing ~100+++ HP in those gears instead of something superior but more costly to machine
@@w8stral i mean he did also mention that the tech to even have efi for it didn't exist and they were using 2 jag v12 setups. He really constructed the main body in assembling and machining the entire housing setup and shafts. I'm sure there's a lot to modernize and overhaul to get every drop of power out.
I'd like to see it run, instead of bs'ed about a guy who says it runs... and if it runs I figure the next rebuild willl be very soon considering all the seals 1 rotor needs 9 compresion seals.. thats 108 seals that could go bad.... lol no rotary's are not great...
Absolute genius for the counter rotation build. I can't even imagine how this would sound. It's going to take some impressive radiator setup to cool this beast.
the amount of hours this guy put in on just the R&D the engineering put in and the technical stuff to make this a reality would be unfathomable. pretty exited to see this series to see it run in the end
Amazing, yes. Performing a useful purpose, no. As the Rotary Engine has a number of inherent flaws making this the modern equivalent of the Hall-Scott Military Truck engines, as used in the Dragon-Wagon which were replaced by Turbo Diesel Engines... I wonder what they could do if they made a Horizontally Opposed Piston Turbo Diesel Two Stroke, as instead of getting half the efficiency with a rotary when compared to a conventional engine, they could achieve almost double the efficiency...
@@davidhollenshead4892 designs have their ups and downs. take Detroit engines for example. You know them, the Screamin' Jimmys. Yeah they're not the most efficient, but they make fantastic generator engines because of just how fast they get up to higher RPMs compared to 4-stroke diesels.
I remember watching Tyson build this about a decade ago, I was in shear amazement and still am at the level of engineering and creativity. I never thought it would revolutionize offshore racing engines like he did, but I had to give him an A+++ for effort and innovation! This wasn't the only insane build he did either, lots of super cool boat, engine, and powertrain builds. He's a true innovator for sure!
@@DannyMcmonagle94 I followed his builds on Offshore Only (it's a offshore boating forum). There's years of his content and creations on there. Simply amazing stuff.
Those twin turbo Smith power big blocks are a work of art. They went into a 388 on GLOC that was smoking fast. Glad to see them bringing out the 12 rotor.
@@prepchris145 The 388's are a fast hull, but you're 100% correct, those Smith Power engines were nasty! It was sad to see Brad pass away due to a stupid accident back in 2013 (?). He was a super talented builder, fabricator, and tuner. I still have one of his old black "Smith Power" tee shirts with the chrome letters! 😎
Wow, what a talented engineer he is! Wouldn't it be cool if you were able to create an engine management system that could adjust how many rotars you used for the power needed at the time to save fuel and increase lifespan?
I'm studying mechanical engineering and I was feeling a bit down about the career, but seeing this type of things just makes me want to finish as soon as possible and start working on some awesome stuff like this. Definitely you are one of my biggest inspirations for doing what I'm doing, making with every single video remember me why I want to do this. Thanks Rob❤
Gasoline engines alone have many orders of magnitude left in their potential. It's critical to know, what the public has been using, is only a fraction of what is possible. Have you noticed that garage builders never try to innovate the fundamental design of an engine? Never. You need to find a way to invent a new combustion technology. That's where the future is. Lean burn engines are VERY POSSIBLE. The 1973 Shell Oil sponsored race, a 1959 Opel got 376 miles per gallon.
Wow! The amount of engineering this guy went through. You're going to do this guys legacy a lot of good justice. He couldn't have given his project to a better TH-camr.
Have dreamed about this video for a long time! So excited that it’s FINALLY HAPPENING!!!!!! :D Rob and the guy that designed/built the 12 Rotor are cut from the same cloth! So amazing watching them work/engineer/ do ANYTHING together! One bright light meets another bright light and you get THE SUN! 😂 Cannot wait to see the next video!
As a machinist listening to this guy is awesome. Just the way he built the whole thing to come to get her inside and not at the face of the aluminum is amazing
Not a minute in and I like your demeanor, you convey your excitement, without being over the top like other channels. Quality content. I didn't know much about rotarys until today. You just got you a sub and hope you get many more.
I’ve been watching Rob since he had around 1,000 subscribers. He continues to get better and smarter with each video. He has always broken things down to an easy to understand level for people who may not know much about cars and rotary engines. Amazing content since the beginning
I was so used to seeing V engines because of pistons and even though I knew this was a rotary engine, I didn't realize this was actually 3 4-rotor engines connected together until I saw the 4 throttle bodies that are supposed to feed 12 rotors meaning 3 rotors per body. This engine is priceless and the maker of it is really pleasant to listen to.
@@BigBlockCaprice I ugly laughed when he was like "Yeah I saw your video talking about a bearing front support? We made bearing front supports on this 15 years ago"
My favorite part about this engine, is it’s smooth enough you can sit a glass of water on the engine itself and it won’t ripple. Absolutely astounding and incredible workmanship and passion was put into this piece of “automotive” artwork. Since it was made for marine applications
I just want to say I’m honoured to be alive and breathing to be able to witness this masterpiece of a video. The Chevy man himself to build such a godly weapon that no one on this earth would do and also educate me as well to rob on everything he did was just perfection. I’ll be getting a divorce and pay child support to live in a abandoned shed with window washing profits for data to watch this series
I remember many years ago seeing the potato quality video of this beast... and im still in awe to this day on the level of engineering this man put into this. Seriously beautiful piece of craftsmanship.
Thank you Rob, 6:40 “Picking up a new skill at 30” Hearing you say that is Motivation Brother. Thank you, I came across this video first. I’m now subscribed and look forward to learning more from your content.
This just broke my brain in half. I'm honestly speechless. Just when you think you've seen everything the internet has to offer this comes along. I'm so f**king stoked to see what Rob does with this monstrosity.
I saw this engine years ago... I was just in awe and still am. The fact he's brought it to y'all to make all the hrrrsprrr's is just incredible! Can't wait to see it fire up!
Hi! New viewer, and a Neanderthal Harley tech. Rotary motors have been nothing but a legend or myth like in my life. But I feel like a combination of 3D printing, nitride coating and this man’s design is going to be the future of powertrain production. Easily expandable to infinite and reduced parts is genius
I’m leaving two comments here, but holy cow. This is such an incredible engine. I look forward to seeing everything come together and run this/next year. Really, really great. And you can tell the guy who made it is an engine building genius for sure.
It was built 15 years ago, Whoa!! Counter rotation 😮 it’s incredible how big a Big block is, this engine is far above my level of understanding, but I can appreciate the sheer genius of even thinking of let alone making such a engine 😃
I'm not even a car guy but as a novice engineer who loves seeing how things work this video was really cool. What a cool engine and what a cool guy who built it. Very impressed. The engineering on this is very inspiring.
A great example of what happens when someone who has tons of experience pushing limits outside of the rotary world comes into the rotary world. Crazy how simple he made the complexity. Awesome opportunity and video.
I actually get excited everytime I see anything Rob posts. By far my new favorite TH-cam channel. I have been hooked since I saw the first 4 rotor video
I have no idea why this is in my recommendations, but I have really enjoyed this video. I am an HVAC tech that does small engine repair and wood work for hobbies. (and $ 😉 ) I didn't know that I wanted to know about rotary engines, but NOW I do. That looks like a very interesting way to make your mind go boom.
Your enthusiasm for this project is infectious, I absolutely love it. For someone who literally doesn't know anything about engines, you are the perfect teacher. Cant wait for the next video, please keep it up Mr. Dahm
Rob I am as excited as you are to see this and can't imagine what the possibilities are. Not to mention the Absolute Solid Brilliant Design and Work of Art Gorgeous Appearance. You are very . . . very lucky to have Tyson share this with you. I look forward to the videos that will follow, and I have subscribed. WoW.
i'm not even a gearhead but i was glued to this video and will check in to watch the entire series. i want to see this puppy run. could probably power an entire neighbourhood.
Man this is insane, this sounds like an easy 3000hp, also can't wait what this could mean for future cnc projects, dual 4 rotor with 2 massive turbos for maybe a, i dunno, diablo or something anyone?
I remember seeing this engine here on TH-cam like over a decade ago & couldn’t wrap my head around how it actually was a 12 rotor let alone how it worked. This is one helluva treat! Excited to keep up with this series.
Rob going full kid in a candy store this entire vid, lol. Don't blame him, that engine is legit one of the most beautiful pieces of CNC engineering I've ever seen.
When it still sat in the van, my first thought was: "OMG, this is a piece of art". And then you said it too. And it is even a thing of beauty on the inside. Just WOW !
This is INCREDIBLE and Rob is the coolest, best and most enthusiastic guy to give an engine like this to. I'm not even a Rotary guy in any way but I;ve learned so much about them from watching Robs channel and gotten sucked in by his enthusiasm and awesome personality on camera. Such a fascinating channel and such a work of art engine. This guys a bloody mechanical genius.
This is why i love Rob's videos. His excitement seeing this motor is the same child like giddy energy that i would get seeing it and not a manufactured hands over the face typical youtube reaction
I saw this engine on tiktok and immediately thought you'd lobe it, but never did i imagine we'd get teardown content from you while talking to the mad genuis who built it. You consistently impress and surprise with your content, I love it. I think at this point I know more about rotaries than any other ICE engine
after many many years scratching my head with the minimal pics available of this beasty motor. i must say a BIG thank you for allowing us an inside peek at this monster motor :)
i remember the video of this from 9 years ago with the 2 glasses of water and all ❤ we NEED a CAD model of this, this is a work of art and a once in a lifetime engine ❤ im a ongoing engineer (fascinated by machining , motors, cars, cnc machines and all that) and the work that went into this is enourmus, the thoughtprocess to the machining, 📈im inpressed to the moon
When I was a kid my brothers and I build a see through Wankle Rotary Wngine kit. It was so cool because all the parts moved and you could see how it all worked. It always made so much sense to me the constant motion in one direction would be more effect than a reciprocating engine. I guess dreams and reality are to different things. That said this is the most amazing looking engine I’ve ever seen. I’d put this up with the Merlin V-12.
Wow mind blown, with a custom 12 rotor, very impressive design and I’m excited to see how the fueling, ignition timing and exhaust systems work! Awesome project Rob and team!
Absolutely unbelievable absolutely amazing peace of engineering..hell electric.give me a rumble every time.. very impressed I watched the Dyno video first and had to watch everything I could find about this marvel.. thanks for energizing my motor head... 😮
I cant belive you actually got your hands on this, i watched tysons videos way back in the day when my friend showed me and i always wanted to see someone do something more with it, this is amazing
Wow.... just wow. Tyson is a master of his craft.. and Rob im so excited to see all the videos and interesting things you are going to be able to do with this machine. Lets go buddy!
oh man I’m SO GLAD this is being documented here on the biggest rotary channel!! This way there’s at least some sort of documentation on how this beast was built and how it works. This is just way too awesome!!!
This is an excellent opportunity to talk about balance of configurations. How the engine balances firing orders, etc. so when people dream big about combinations like this or other theories, why a 5 rotor or even a 7 isn’t considered. Because stacking combos like this gets strange.
The fact that the original designer and builder of this one of a kind engine specifically reached out to Rob for this speaks volumes about how far he has come. There are so many rotary shops around the world who would kill to get their hands on this thing yet he chose the one and only Dahm.
Tyson is one those guys who does not ask ''why?'', but instead asks ''why not?, when prompted with a challenge. There are so many unique one-off solutions in this engine that may seem obvious when looking at it here, yet no one else have done it. And the fact that he proudly shows off all his work instead of keeping it a secret to himself, like a lot of rotary shops like to do, is so incredibly cool.
I can't wait to see what it is capable with all the modern tech hooked up to it.
Im sure thats why he went to Rob. He has totally designed his own modern injection and timing map for a 4 rotor turbocharged engine. To get the ignition timing and fuel injection to work together is something Rob has learned to do from the ground up.
Tyson is a brilliant engineer. Adding Rob's know-how to feeding his monster should offer interesting results. What a team-up this could be.
He also knows they will find out the TRUE potential of this beast of an engine !!! Hopefully Tyson will be a part of helping bring the beast out !!
@Raczoon I'm so excited for this team up. They'll learn so much from each other!
Very well said!
The level of machining done to create this engine is absolutely mind boggling. Every 30 seconds my mind was blown. Just the cooling and lubrication of three 4-rotors in one block is insane, not to mention the splined e-shafts. Hats off to Tyson
Agreed 💯
Top, top content. What a machine.
Top notch video Rob, great job! amazing engine too
No u
Where's the Holden, Marty?
kinda makes you wanna stop farting around with all those silly squid builds you've been pumping out for years.....or not.
pretty sure Moog and Marty got hooked on wank(el)s because of Dahm obsession with wank(el)s lol
@@NoBallsInWomensStalls people luv thoes builds tho
Can we just all take a second and thank this man for the incredible rotary content he puts out! All hail the king of rotary!
I think the rotary king is the person who created the 12 rotor. Wouldn’t you say. No offense but rob puts it together and doesn’t make the engines.😂
@@petermerkin6428 i mean, rob quite literally assembled and machined most of the engine components on the four rotor. He tunes and builds his cars from scratch, hes really a mastermind when it comes to this stuff. I would consider him the rotary king.
@@petermerkin6428 As a 3rd gen automotive engineer, ( 43yrs trade life) you would be correct.
One very clever man to use the footprint of a chevy, and package 12 rotors in it.
No counter balancing, infinitely adjustable firing via crank clocking.
Veeeerrrryyyy cool.
#RobDahm you have definately been blessed by a very clever man.
Me thinketh Rob will really shine light on his very clever mind also.
😉🙂👍👍
Gold content, this is absolutely nuts
@ 26:35 he says he has a bigger diesel one , Would love to see that one
As a CNC machinist I can appreciate that this man constructed this "near flawless" masterpiece first time round! That level of precision, efficient design and highest grade materials along with innovations that improve every aspect and vulnerability that the rotary engine previously had; it makes this true masterpiece of engineering!
Right down to the balance cancellations through counter-rotating the assembly, the increased torque via dual lobe firing is like an epic level of engineering 👌
Lastly I'm going to state that I saw the video clip of this engine running with a glass of water sitting on the intake......in the video he revs the engine and it doesn't even make a ripple in the water in the glass! The balance is by far the best I've seen of any combustion engine yet?
Same here this is truly a piece of art. The hours of machine time and the weeks of planning that went into this monster of a project is beyond me by light-years. This makes what I do look like child's play. This is makes rocket injector plates look like plinko boards.
@@iWilburnYou why did you skip me to the vital greens Rob is promoting?
As a guy who “had a Bridgeport mill” for a couple of years, I have MAD RESPECT for machinists, ( I watched some guys who supported The Cape in the 70s work) and this device is literally a work of Magic in a field of Magicians.
and he's so casual about it too
It's fking insane. The custom work here is insane. This guy came out of nowhere with this motor, makes me wonder what else is out there in the wild and not on youtube.
This man is clinically insane. Not only did he make a 12 rotor engine, he had one bank spin opposite to the other and balance it in such a way that he never needed any counterweights!
woah thats smart
Reminds me of Napier deltic. One crankshaft spins in the opposite direction.
Similar Idea to the 50's Napier Deltic engine...
Yes we watched the video too
@@MadScientist267 watch it again
Rob's channel is going to be popping this year, so many exciting projects.
It will be literally popping
I cannot wait to see the reaction when this goes live
Brapping you could say
June and July look mint as well
We already popping brother
This has to be the most insane motor i have ever seen. The fact the builder chose Rob and his team shows the amount of respect earned from the rotary community. Years of hard work and contagious passion for every aspect of rotary race performance engineering from you Isaiah and the rest of your crew has paid off. You made me a avid watcher of arguably a niche car genre I would have probably passed on. I think a quote from a resent movie fits best :
"You're where you belong".
Very few times in my 47 years of being a professional mechanic, lifelong automotive enthusiast have I ever felt inadequate mentally, but my mind is blown! Absolutely without a doubt beyond my comprehension!
Hey mate I'm with your mindset. Been a petrol head & professional auto engineer 4 over 50 years. Still can't comprehend how incredibly gifted the designer & builder of this engine is. Wow.
I half expect some Mazda rotary engineers and others to reach out to you, just because they have ideas about how to make this thing work better. It's SO unique, not what I was expecting at all.
I’m sure if he asked nicely he could get Mazda in on it. Or any other car brand. Imagine giving this to the Rolls Royce engineering team to tune and balance it for a few months
@@samuelhokanson7560 Its not gonna happen, what killed rotaries was emissions and fuel efficiency not power and reliability. Which is such a shame honestly because a sportscar or a big truck is inherently an inefficient thing to drive, so what's the point?
@@mortache rotary’s are coming back now
@@Agilepickleunite did Mazda or someone else announce something? I do want them to come back, but a man's gotta be realistic
@@mortache as a range extender motor in a hybrid car
Wow…. Opposed spinning rotors and no counterweights. This guy is a fkn genius! Added with Robs passion, talent and this thing will be incredible
Fr, he should be designing space shuttles 😂
There's still going to be some dynamic imbalance there no matter how you arrange them, it's just not going to be catastrophic to the engine.
@@Skinflaps_Meatslapper just stop. He clearly explains it in the video and its the same reason v12s dont need counter balances or on straight sixes. Same principle applies, the rotors balances themselves out the way they are oriented..
The gentleman also said, "...on my bigger diesel one." OMG is he saying that he has a bigger diesel version of this beast?
I'm still confused about the balance... the left and right 4 rotor banks are counter-rotating, but the bottom bank doesnt? I guess it will still torque somewhat, but no more than a regular 4 rotor.
At first I thought the layout was going to be like 2x 6 rotors arranged in a V configuration, but it's more like 3x 4 rotors in a W configuration.
I've never seen any of Rob's videos, never have been interested in rotary engines...yet I'm a new subscriber because this looks so damn cool and Rob seems so genuinely excited over this. Can't wait to follow this series
FINALLY!!! I read through this entire build thread probably 20 years ago!!!!!! Glad he’s finally getting recognition for this absolutely stunning build. As an engineer the cleaner something looks… the more hours spent. And this is BEAUTIFUL!!!
That guy is my hero 😎
He's got a TH-cam channel
So good! Everything about this is so good! 👏
When he pointed out the BB architecture the brilliant thought behind it started to fall into place... so good!
This dude.. is insane. The amount of engineering an thought he put into it just because he wanted to do it.
If thats not amazing, then I don't know what is.
The amount of engineering that went into this motor is hard to fathom... thanks to everyone involved for bringing us this amazing rotary content!
Id just like to see F1 engineers take this to extreme
@@captaintoyota3171 No kidding man. Imagine decades of work into the rotary by the best motorsports engineers. The 787B's engine was magnificent back in the day when they started to dial it in.
This is insane. Not only that Dahm has managed to up the ante *yet again* having already blown even the most optimistic followers away, but the very engineering and potential of this engine and its creator is just incredible. Incredibly pumped for this partnership. A few years ago it would have been near impossible to believe that Dahm would be the right guy for this job, but after years of humility, listening, learning, striving and achieving, he's proven more than worthy. The trajectory has been incredible and I couldn't be happier for the guy.
WELL SAID.
Just goes to show you the human brain is still the best computer when you use it. Most people want to push a button and get a answer. Pyramids hoover dam etc was all by the human imagination of what if. Insane amount of thoughtfulness
It really is an incredible partnership. I remember studying the development pretty closely on this engine years ago. Far before UPS "lost" the original turbo 4 rotor. I been following Rob Dahm from the start of his journey but that was long after the 12 rotor disappeared mysteriously from the spotlight for years and I nearly crapped a brick when I discovered what Rob was doing with it the other day just scrolling Instagram. I seen this coming... my mind told me subliminally it would happen while pondering rotary stuff in the back of my mind watch a 4 rotor vid. I also told my mind it was stupid and it would never happen. Stupid me. Made a fool of myself 😅
I’m just blown away at how robust and overbuilt that is. So amazing!! Love seeing stuff like this!!
Rob, you're one of the best things to happen to the rotary community. I'm not just tooting your horn or exaggerating. Having INNOVATIVE rotary technology shared in an easy to digest format (videos), whilst also being well documented is something im extremely grateful for.
Thanks for taking the big step and doing this for as long as you have. I admire your curiosity and appetite for learning more.
When you go from being an enthusiast to one of the leading rotary mechanics in the world over just a few years!!!!!!!!!!!!!!!!! Congrats Rob and Co. you guys deserve to be the ones bringing that into full working order! But please what ever you put it in make sure the designers name is prominent and visible that man deserves all of the credit for designing and building that motor.
He turned a essentially a two stroke to a four. Its set up like giant cam shafts thats insane. Love it thats absolutely genius
As a precision engineer.....I am in awe, this guy is a legend. Make it work Rob.
Seriously though, is everyone gonna gloss over the MODULAR rotary engine aspect? That ease of 2 4 6 8 rotor builds is a multi million idea that he should have been pitching to mazda or other third party brands.
@@R0FLC4T5 With the new upcoming rotary supplementary engine from Mazda I’m hoping they’ll properly revive the purely rotary-driven cars again, a modern-day RX-7 with a cutting-edge rotary would be 👌
Pretty damned fine engineering... must have run out of $$$ as he is using spur gears... Engine that size will be losing ~100+++ HP in those gears instead of something superior but more costly to machine
@@w8stral i mean he did also mention that the tech to even have efi for it didn't exist and they were using 2 jag v12 setups. He really constructed the main body in assembling and machining the entire housing setup and shafts. I'm sure there's a lot to modernize and overhaul to get every drop of power out.
I'd like to see it run, instead of bs'ed about a guy who says it runs... and if it runs I figure the next rebuild willl be very soon considering all the seals 1 rotor needs 9 compresion seals.. thats 108 seals that could go bad.... lol no rotary's are not great...
That engine gives me the chills. Never have I seen something that is as much a work of art as it is a threat.
Now imagine the amount of fuel it'll require to make it go full send.
Ever seen a fighter jet? Lol
@@OfficialParkit Jet engines are indeed awesome, but they are function over form. They have NOTHING on this monstrosity.
@@risingwind8943 fax, both function and form
Absolute genius for the counter rotation build. I can't even imagine how this would sound. It's going to take some impressive radiator setup to cool this beast.
the amount of hours this guy put in on just the R&D the engineering put in and the technical stuff to make this a reality would be unfathomable. pretty exited to see this series to see it run in the end
Amazing, yes. Performing a useful purpose, no. As the Rotary Engine has a number of inherent flaws making this the modern equivalent of the Hall-Scott Military Truck engines, as used in the Dragon-Wagon which were replaced by Turbo Diesel Engines...
I wonder what they could do if they made a Horizontally Opposed Piston Turbo Diesel Two Stroke, as instead of getting half the efficiency with a rotary when compared to a conventional engine, they could achieve almost double the efficiency...
@@davidhollenshead4892 designs have their ups and downs.
take Detroit engines for example. You know them, the Screamin' Jimmys. Yeah they're not the most efficient, but they make fantastic generator engines because of just how fast they get up to higher RPMs compared to 4-stroke diesels.
@@davidhollenshead4892 Have you been here long?
I remember watching Tyson build this about a decade ago, I was in shear amazement and still am at the level of engineering and creativity. I never thought it would revolutionize offshore racing engines like he did, but I had to give him an A+++ for effort and innovation! This wasn't the only insane build he did either, lots of super cool boat, engine, and powertrain builds. He's a true innovator for sure!
Is there any content online??
@@DannyMcmonagle94 I followed his builds on Offshore Only (it's a offshore boating forum). There's years of his content and creations on there. Simply amazing stuff.
Those twin turbo Smith power big blocks are a work of art. They went into a 388 on GLOC that was smoking fast.
Glad to see them bringing out the 12 rotor.
@@prepchris145 The 388's are a fast hull, but you're 100% correct, those Smith Power engines were nasty! It was sad to see Brad pass away due to a stupid accident back in 2013 (?). He was a super talented builder, fabricator, and tuner. I still have one of his old black "Smith Power" tee shirts with the chrome letters! 😎
Wow, what a talented engineer he is! Wouldn't it be cool if you were able to create an engine management system that could adjust how many rotars you used for the power needed at the time to save fuel and increase lifespan?
I'm studying mechanical engineering and I was feeling a bit down about the career, but seeing this type of things just makes me want to finish as soon as possible and start working on some awesome stuff like this.
Definitely you are one of my biggest inspirations for doing what I'm doing, making with every single video remember me why I want to do this.
Thanks Rob❤
Gasoline engines alone have many orders of magnitude left in their potential. It's critical to know, what the public has been using, is only a fraction of what is possible. Have you noticed that garage builders never try to innovate the fundamental design of an engine? Never. You need to find a way to invent a new combustion technology. That's where the future is. Lean burn engines are VERY POSSIBLE. The 1973 Shell Oil sponsored race, a 1959 Opel got 376 miles per gallon.
@@andyharman3022 i will, thanks for the recommendation pal
@@Ritalie There's a reason super-heating fuel into vapor before having it enter the combustion chamber never caught on.
You should quit now...
You might as well finish, those student loans won’t pay themselves, and billy bob Biden won’t help you! 😂
An absolutely awesome piece of engineering. It does not get any more impressive than this. Well done. Gold star.
This is the definition of engineering at its finest. ❤️🙌👏
The engineering here is masterclass, can't wait to see Rob work his magic on this internet legend
Wow this thing is nuts the amount of thought and engineering that went into this is astounding
This is the kinda thing that happens when you tell a brilliant engineer he _can't_ do something and he says "hold my beer".
"you can't do it"
"Bet"
Beer ya ha I practice fractional distillation
Dude fr said "watch me"
Wow! The amount of engineering this guy went through. You're going to do this guys legacy a lot of good justice. He couldn't have given his project to a better TH-camr.
Have dreamed about this video for a long time! So excited that it’s FINALLY HAPPENING!!!!!! :D Rob and the guy that designed/built the 12 Rotor are cut from the same cloth! So amazing watching them work/engineer/ do ANYTHING together! One bright light meets another bright light and you get THE SUN! 😂 Cannot wait to see the next video!
As a machinist listening to this guy is awesome. Just the way he built the whole thing to come to get her inside and not at the face of the aluminum is amazing
There’s literally no other way to do it lol
Not a minute in and I like your demeanor, you convey your excitement, without being over the top like other channels. Quality content. I didn't know much about rotarys until today. You just got you a sub and hope you get many more.
I’ve been watching Rob since he had around 1,000 subscribers. He continues to get better and smarter with each video. He has always broken things down to an easy to understand level for people who may not know much about cars and rotary engines. Amazing content since the beginning
I was so used to seeing V engines because of pistons and even though I knew this was a rotary engine, I didn't realize this was actually 3 4-rotor engines connected together until I saw the 4 throttle bodies that are supposed to feed 12 rotors meaning 3 rotors per body. This engine is priceless and the maker of it is really pleasant to listen to.
No, 4 rotors per body…
"How many rotors can we fit in a big block" Absolute legend
Time to pull a 454 out of 57 Chev and wack in a 12 rotor 🤣
@@MrStuwr250f I'm imagining this in a C10 truck
@@MrStuwr250f And if you thought the 454 liked gas---
BTW, I've had a couple of 454s.
@@JamesBalazs Given how PRETTY this thing is, something basically missing the front end. It NEEDS to be shown.
@@JamesBalazs I'm imagining this in a lambo.. but maybe that's just me
When 2, 3, 4 or 6 Rotors are NOT enough, Mr. Dahm HAS to go for a 12 Rotor just to flex on us! Absolutely INSANE! 😂
the other guy was the one doing the flexing lol hes the one that made the motor
@@BigBlockCaprice I ugly laughed when he was like "Yeah I saw your video talking about a bearing front support? We made bearing front supports on this 15 years ago"
Still the 4 rotor isn't finished 😂😂😂
I'm joking, it's the meme!
More Dahm is always awesome, not matter how, what, why or when!!!
@@JohnWiku the 6 rotor still isn’t finished 😅
@@BigBlockCaprice I never said Rob built it...
that's an awesome piece of engineering. this is one engine to follow stories on for decades to come!
I’ve never clicked on a video so fast before
Same bto
I had to re read the title to believe it lmao
Same, it was instant
No way you saw it 3day before everyone
Never thumbed up a comment so fast before
This beast was built like 15yrs ago and almost got taken out by the Joplin Tornado back in 2011. Good to see the engineer still has the engine.
What the fuck?? This was in Missouri???
@@codynelson3493 Yea! I was following this guy on Rx7-club when that tornado barely missed his shop.
@RotaryPerfection dude I have always always always wondered about this engine and it was about 50 minutes away from me
@@codynelson3493 That's crazy!
My favorite part about this engine, is it’s smooth enough you can sit a glass of water on the engine itself and it won’t ripple. Absolutely astounding and incredible workmanship and passion was put into this piece of “automotive” artwork. Since it was made for marine applications
I just want to say I’m honoured to be alive and breathing to be able to witness this masterpiece of a video. The Chevy man himself to build such a godly weapon that no one on this earth would do and also educate me as well to rob on everything he did was just perfection. I’ll be getting a divorce and pay child support to live in a abandoned shed with window washing profits for data to watch this series
This is a jaw dropping feat of both engineering and machining. Well done.
👀i'm really curious how this engine will run & sound..
Don't know nothing about cars.. but just listening to you guys , the passion you speak with about this rotors . I'm a new fan .. bravo
I remember many years ago seeing the potato quality video of this beast... and im still in awe to this day on the level of engineering this man put into this. Seriously beautiful piece of craftsmanship.
This is absolutely insane to see! The simplicity of a rotary engine allows for the world to do these things, this is nuts!
Thank you Rob, 6:40
“Picking up a new skill at 30”
Hearing you say that is Motivation Brother.
Thank you, I came across this video first.
I’m now subscribed and look forward to learning more from your content.
This just broke my brain in half. I'm honestly speechless. Just when you think you've seen everything the internet has to offer this comes along. I'm so f**king stoked to see what Rob does with this monstrosity.
Smh. I know right. Whole thing literally took my breath away...
I was flabbergasted when I saw a video of this monster many years ago. Amazing piece of engineering.
I saw this engine years ago... I was just in awe and still am. The fact he's brought it to y'all to make all the hrrrsprrr's is just incredible! Can't wait to see it fire up!
Hi! New viewer, and a Neanderthal Harley tech. Rotary motors have been nothing but a legend or myth like in my life. But I feel like a combination of 3D printing, nitride coating and this man’s design is going to be the future of powertrain production. Easily expandable to infinite and reduced parts is genius
I’m leaving two comments here, but holy cow. This is such an incredible engine. I look forward to seeing everything come together and run this/next year. Really, really great. And you can tell the guy who made it is an engine building genius for sure.
It was built 15 years ago, Whoa!! Counter rotation 😮 it’s incredible how big a Big block is, this engine is far above my level of understanding, but I can appreciate the sheer genius of even thinking of let alone making such a engine 😃
I'm not even a car guy but as a novice engineer who loves seeing how things work this video was really cool. What a cool engine and what a cool guy who built it. Very impressed. The engineering on this is very inspiring.
A great example of what happens when someone who has tons of experience pushing limits outside of the rotary world comes into the rotary world. Crazy how simple he made the complexity. Awesome opportunity and video.
I actually get excited everytime I see anything Rob posts. By far my new favorite TH-cam channel. I have been hooked since I saw the first 4 rotor video
Donde esta el 4 rotores
I have no idea why this is in my recommendations, but I have really enjoyed this video. I am an HVAC tech that does small engine repair and wood work for hobbies. (and $ 😉 ) I didn't know that I wanted to know about rotary engines, but NOW I do. That looks like a very interesting way to make your mind go boom.
The amount of engineering he put into this is mind blowing.
Code name: Mikey.. 'j3333333wwsss j3333333333wwss'
Your enthusiasm for this project is infectious, I absolutely love it.
For someone who literally doesn't know anything about engines, you are the perfect teacher.
Cant wait for the next video, please keep it up Mr. Dahm
Rob I am as excited as you are to see this and can't imagine what the possibilities are.
Not to mention the Absolute Solid Brilliant Design and Work of Art Gorgeous Appearance.
You are very . . . very lucky to have Tyson share this with you.
I look forward to the videos that will follow, and I have subscribed.
WoW.
Holy crap that thing is amazing, I cannot wait to see you guys help this man realize his vision. That is pure engineering & art combined
The most impressive engine I've ever seen. I can't wait to see what you guys can accomplish together
i'm not even a gearhead but i was glued to this video and will check in to watch the entire series. i want to see this puppy run. could probably power an entire neighbourhood.
Man this is insane, this sounds like an easy 3000hp, also can't wait what this could mean for future cnc projects, dual 4 rotor with 2 massive turbos for maybe a, i dunno, diablo or something anyone?
5000hp with twin 106mm turbos @ 50psi... according to an article i read
At that point fuel capacity becomes a huge consideration
I'm calling 5000hp
@@R03333 well, who needs passengers anyways? Slap a gigantic fuel cell in the passenger seat and surround it with absurd ammounts of fire suppression
@@R03333 tbf its a boat motor so storing fuel isnt that much of a problem
I remember seeing this engine here on TH-cam like over a decade ago & couldn’t wrap my head around how it actually was a 12 rotor let alone how it worked. This is one helluva treat! Excited to keep up with this series.
I love this engine. The design is so well thought out, and not to mention it's beautiful. The inventor is brilliant.
Rob going full kid in a candy store this entire vid, lol. Don't blame him, that engine is legit one of the most beautiful pieces of CNC engineering I've ever seen.
When it still sat in the van, my first thought was: "OMG, this is a piece of art". And then you said it too.
And it is even a thing of beauty on the inside. Just WOW !
This is INCREDIBLE and Rob is the coolest, best and most enthusiastic guy to give an engine like this to. I'm not even a Rotary guy in any way but I;ve learned so much about them from watching Robs channel and gotten sucked in by his enthusiasm and awesome personality on camera. Such a fascinating channel and such a work of art engine. This guys a bloody mechanical genius.
Rob is such a treasure to the car community, really enjoying everything he puts out and all the knowledge he’s teaching us 🙏🏻
This is why i love Rob's videos. His excitement seeing this motor is the same child like giddy energy that i would get seeing it and not a manufactured hands over the face typical youtube reaction
Wow...I'm not even a rotary guy (never owned one) but have appreciated the engineering since I built a working model as a kid. Killer engineering!
I saw this engine on tiktok and immediately thought you'd lobe it, but never did i imagine we'd get teardown content from you while talking to the mad genuis who built it.
You consistently impress and surprise with your content, I love it. I think at this point I know more about rotaries than any other ICE engine
after many many years scratching my head with the minimal pics available of this beasty motor. i must say a BIG thank you for allowing us an inside peek at this monster motor :)
AMAZING…I’ve followed you, for years…this project…like nothing else, ANYONE…has ever done!!! Insane…but as a team…you will pull it off! 👍
That engine is art. The amount of thought and workhours that went into creating it are unimaginable
i remember the video of this from 9 years ago with the 2 glasses of water and all ❤
we NEED a CAD model of this, this is a work of art and a once in a lifetime engine ❤
im a ongoing engineer (fascinated by machining , motors, cars, cnc machines and all that) and the work that went into this is enourmus, the thoughtprocess to the machining, 📈im inpressed to the moon
the cad file for ahura is ridiculous already, 14gbs 😭😂 but I agree a cad model of this engine would be epic.
I'm kinda curious as to the Budget it had on the Engineering and Mfg side of it ... I'm guessing a Half Milly if not a bit more 🤔 😳 😬......????
Just Fantastic! Cannot Thank the inventor/builder enough! And you for carrying on! AMEN! J
Finding the best tune for this sounds like a neverending nightmare. I'm so excited to see this come alive.
This is incredible. Unlike many others here, I had never heard of Tyson or his twelve rotor. Cannot wait to see how this goes!
When I was a kid my brothers and I build a see through Wankle Rotary Wngine kit. It was so cool because all the parts moved and you could see how it all worked. It always made so much sense to me the constant motion in one direction would be more effect than a reciprocating engine. I guess dreams and reality are to different things.
That said this is the most amazing looking engine I’ve ever seen.
I’d put this up with the Merlin V-12.
Wow mind blown, with a custom 12 rotor, very impressive design and I’m excited to see how the fueling, ignition timing and exhaust systems work! Awesome project Rob and team!
I can’t wait to hear this run! What an engineering marvel! 🎉
My first car I ever had was a 79 RX7. I loved that car. This engine makes my car look like a toy.
I'm so happy you guys finally got together and this is happening.. I remember wishing this would happen years ago!
My little mind is officially blown. Thanks for the great content yet again! Keep it coming Rob!
Absolutely unbelievable absolutely amazing peace of engineering..hell electric.give me a rumble every time.. very impressed I watched the Dyno video first and had to watch everything I could find about this marvel.. thanks for energizing my motor head... 😮
I cant belive you actually got your hands on this, i watched tysons videos way back in the day when my friend showed me and i always wanted to see someone do something more with it, this is amazing
Rob has come along way I've followed him for a long time it's awesome to see him at this point!!
Really excited to see the result!
I never ever dreamed that this engine would ever land in Rob's hands. I thought it was a failed project. Damn, this is amazing!!!!
Rob in 10 years: “I Built a 24 Rotor, 6-wheel drive RX-7”
This engine is the start of flying cars 😂😂😂
Don’t forget FD rx7😅…
There's always a VERY fine line between madness and genius, and I haven't made my mind up about this yet!!!
Wow.... just wow. Tyson is a master of his craft.. and Rob im so excited to see all the videos and interesting things you are going to be able to do with this machine. Lets go buddy!
I remember watching this build years back. Incredible. Just an amazing work of art. Can’t wait to see what Rob and Isaiah figure out with it.
My brain is trying to believe my eyes, & process the beauty, the expected braun, & just the "Amazingness" of what I am witnessing! Thank you sirs!!! J
oh man I’m SO GLAD this is being documented here on the biggest rotary channel!! This way there’s at least some sort of documentation on how this beast was built and how it works. This is just way too awesome!!!
This is an excellent opportunity to talk about balance of configurations. How the engine balances firing orders, etc. so when people dream big about combinations like this or other theories, why a 5 rotor or even a 7 isn’t considered. Because stacking combos like this gets strange.