rob actually managed to get me conditioned that when that engine blew my first reaction was excitement like "oh he's going to rebuild the shit out of this!"
Hahaha the engine conditioned me to be excited too. But it is a cool achievement to blow up the engine at full tilt not because of a mistake. Just raw power and limits of fuel/turbo
I just found out today My daughter who is 13 has been watching Rob for a little more than a month. She's in advanced Math, Science, Steam. She said it's how rob explains everything and his excitement for engineering that keeps her watching because that's what she wants to do. So thank you rob very much.
There is a book I based my A Level physics project on called "Turbocharging & Supercharging" by Alan Allard. I found it a fascinating combination of practical advice and physics of fluid dynamics, she might like it.
To anyone that's actually been through the pain and suffering of engine building, this is for whatever reason, absolutely true. I can recall this a few times in my life thinking to myself what went wrong it was running better than it ever has I just roasted a Lamborghini! Then BOOM for no reason LOL
@@FrequencyOfThought agree that engins tend to run best before it blows. tuned alot of 2 strokers profesionaly that run real good and costomers enjoyed there engines for a long time but sometimes with my own engines i done like rob to push the limit and sometimes the limit hit way hard and its just to tair it apart. my last engine tuned for "minigp minimoto" i havent seen the piston on since spring of 2010 and it gives roughly the same power as it got built. revs to round 14.000rpm 80cc used it alot on racetrack to fun on the street and a period drove it to work while the car needed a repair...
Mechanical engineering student, been working on cars my entire life, currently living with my aunt and uncle who are retired automotive engineers while I'm at school. That is one of the best simplified explanations of bearings and oil I've ever heard. Not something many people talk about, and something a lot of people get wrong. High mileage engines, if maintained correctly, should use the same oil they used when new because the bearings will be the same size and shape they were when new. The temperatures, pressures, and clearances are the same.
maybe? Introduce condensation, combustion by products, fuel, excess heat, and super high boost pressures and shit starts changing size, shape, and composition! cheers:)
@@GodsFormula I've had more engines apart than you've seen in your life. I've rebuilt several engines. Have an engine I'm about to rebuild that has 509,000km on it, I'll be sure to measure bearing clearances before machining anything and they'll still be in factory spec.
@@boostaddict_if that was the case, there would be no need for any engine rebuilds in road cars. And both you and I know that they happen… a lot… In the real world, things like cylinder bore coating wear down and lead to burning oil, which eventually gets you oil starvation and consequential loss of material leading to catastrophic failure. Just look at Kia, a 50-60k mile engine has no right in having such catastrophic failures, yet oil starvation is extremely common. Real engines suffer fuel detonation, oil starvation, rich and lean conditions, all through various degrees through their lifespan, and those will proactively lead to your tolerances going down. And let’s not talk about engines made 50-70 years ago, when machining, fuel management and overal drivetrain technologies where not to modern standards
Rob’s done more in the last five years than I have in the last twenty… fml, and most of chats. This is an epic journey. Be grateful to have witnessed it.
All it takes is the right moment and the right opportunity to get stuff done. Prepare yourself to take full advantage of that opportunity, and you'll be golden
At least it blew up trying to do something it wasn't meant to do, rather than blowing up when in it's normal duty! Signs of a solid build tbh given how much you've done with that set up already.
I’ve been out of the loop on the 4 rotor since about when he was doing the first couple dino tests, then I see this. I startled my girlfriend when I yelled “FIVE WHAT??” When he said he’s already done at least 5 near 200mph runs on this engine, and it still ran well enough to only blow when he accidentally boosted it WAY past spec trying to hit 6th. Absolutely unbelievable.
@@thedefenestrator2994 And he hasn't even really done much in terms of customising the engine it's self, other than his dowel hole work and porting. He's gonna CnC the new steels from scratch, and everything to be way beefier and Hold much higher clamping forces!
There's nothing more exciting to hear than "We are building our own engines" after seeing everything you guys go through to get that perfect tune and that perfect run out on the track. 👍
Rob - I am a diesel guy and have just a street 1200HP (capable of 2000)... Duramax - Industrial injection block yada yada - and I have a massive steel girdle for bracing the entire aluminum block - i have lost thrust bearings and other thinga... but never had major block damage and its totally due to the girdle preventing warping. I think you are spot on to put a steel girdle brace of some kind to keep the 4 rotor from warping - perfect plan - Way to go man... take it to the moon... you got this...
Yes more 4 rotor content, I can't get enough of this. I love the half mile runs this car does, I think it is the perfect vehicle for it. Thanks Rob and team.
Im glad you finally posted this video, it's crazy how far you have come with pushing the rotary space and sharing all your knowledge about it openly! I can't wait for my Dahm 4 rotor engine!
I love how he explained oil and pressure waves.I can listen to him explain pretty much anything. He simplifies and makes stuff simple to understand. More great RD content!
Ya know what bro? I love watching your channel... Out of all the automotive channels that I watch, And I tell u what it's alot of them!!! Your channel is the one that I love the most... Why you ask?? It's cause you have a little of ABSOLUTE EVERYTHING!!! You BUILD cars, You RACE cars, You make me LAUGH my ass off a bunch, and the MAIN reason that I love your channel bro!!!! Is HONESTLY BUD, You and Isaiah, always "LEARN" me something!!! And to tell you the truth, I will be honest with ya, 9/10 times I watch car content to be entertained... But just the fact that yall entertain the livin shit out of me, and always teach me something NEW, & EXCITING, that I had NO clue about previously... Is to tell ya the truth, is just down right freaking AWESOME bro!!! I tell ya what brotha, if there are any school teachers out there watching, an reading?? They should take some of what your doing, and apply it to there lessons!!! I know every kid learns differently... But... Me PERSONALLY, I would have been excited to go to school everyday, if my teachers entertained me, as well as made me think.. I mean I know its not realy there job, But I always pay close attention to your videos... Its all the extra shit that makes me wanna learn, lik the little funny banter between Isaiah an yourself that's funny as hell one minute, and then the next minute, Your teaching me how to do my own Mill-Spec-Race-Wiring harnesses, ect. Just a quick example... Anywayz, I absolutely love your channel bro... Keep up the good work you two!! You keep on a making them, and I will keep on a watching the shit out of them!!! Thank you for doing what yall do!!! I really appreciate it, alot more than you even know yall!!! 🙃😜🙃 😁🤪😁
I remember when this was a Chassis being caged at a shop and it was just Rob still working on suspension geometry to this so many years later! Pretty wild ride and now your gonna be machining engines basically dudes living the gear head dream XD
I'm not a rotary guy (yet) but can't overstate how much I appreciate you getting granular into the science, mistakes, lessons and response. You might be my favorite car guy on TH-cam.
The process of the 4 rotor has been EPIC to have been a Subscriber during all the early development... Now to see your Really REALLY stepping it up to an in house CNC manufactured parts .. Rob my hat is off to you and your team... Isaiah is THE man!
I've been following Rob since I was in high school. 17 years now, and I'm still amazed by the intelligence you posess. I love the attitude....break it, find it, fix it, send it. atleast IMO ... Thank you :)
Man I've been following this channel for a number of years now and was aware of it for quite a while before that point. The further I get into my engineering degree the more i appreciate channels like this. I'm very excited to see where this will end up going.
I've never seen someone excited to blow a motor, except for Rob. "it's beautiful, this is exciting" then you went Rob Nye AF which was amazing, along with the BOMB at the end. Insane video, truly amazing. You deserve your own TV show. Too good.
If you’ve seen wind tunnel testing, then you’d know that’s not effecting it as much as you’d think. Robs a smart person, if it was gonna hold him back that much, there would have been one put in before this event.
it missing isn't really causing anything as long as the wing isn't there. the bigger issue is the carbon splitter/plate pulling away from the bottom of the car. they're likely going to have come up with a better way to strengthen it and smooth out the transition from the bumper to the splitter so it's not trying to rip it off the car. now if they were doing track stuff, 100% the window needs to be there because it's effecting the air hitting the wing.
@@1216jimmyz you're so, SO wrong. It VERY much matters. You've got a giant opening where the air is expecting a surface, so that creates incredible amounts of turbulence that will make the rear end hop all over the place. The wing won't be as effective, either. Rob isn't concerned about it not because it doesn't matter, but because the car simply isn't built up to a point yet where it matters more than having a bulletproof engine.
I love watching your content. I've been watching since back around the time you brought out project Lambo. I see shit you do that most of us dream about doing. Best part is, no matter how much work you put into the car, you WON'T stop until it's either perfect, or exactly what you want. And if you get something to that point, and then something better comes out, you're not afraid to tear it all apart just to redo it again.. Love the passion brother!
Rob I notice you don't wear a hans🤔. Also change out that cheap racequip helmet please😊 that thing must weigh 5 lbs🤔maybe 6 with the gopro, have to protect your neck in this fast car. A Bell, stilo,sparco or simpson carbon weigh around 2.5 to 4 with the hans posts, the weight makes big difference on your neck 🤗. You got the lightest wire in your engine harness put the lightest helmet on your head😊 Thanks for the great vids
Everytime I put on a Rob Dahm video, I might as well make some popcorn becuase its always a journey of a movie. Its crazy how much he can cram into 30 mins an still make it flow perfectly. As Always Rob, Fantastic Video!
Thank you for all the content of trials and tribulations to get to where you have. It truly is an inspiration for me to try and keep pushing. Depression is a hell of a thing, and it's hard to be motivated. Seeing your passion and fortitude in tough situations, going through the process to make sure everything is still good and overcoming issues, it makes my little project feel so much more doable since there was a day where you were just like me, a normal dude with a dream turning wrenches in his spare time. You're my favorite part of grid life the last 2 years, though I left you alone this year since I didn't want to interrupt you getting the 3 rotor ready for your time attack. From someone who's been watching for about 10 years now, thank you for keeping with it.
1:45 Seeing a rotary so violently do a burnout to the point where the entire suspension is flexing is impressive and just shows the insane amount of HP and Torque it is making.
I love how Rob has set and forgotten all his patreon tier descriptions, and that they're all almost 5 years out of date. Crazy. Mad respect. Doing Gods work.
i don't know a ton about rotaries except for they sounded amazing when i was drag racing in my 20s... I love how technical Rob is about angles, weights, symmetry, balance and everything for a rotary... Some other youtubers take apart their motors after blowing but the precision he has is, in my opinion, unparalleled in this social media car-universe.
I can't help but think that you're a certified car legend in the making man. All this knowledge and trial and error in order to make the best rotary powered car. When this man starts chilling, in his 60s or whatever. The stuff he'd have achieved will put him in the same leagues as Mr.Nagata and Nakai san and all of them
Yeah even the steve morris smx can only handle 70 psi max...so you hitting 60 is alot. Im really impressed! I know it sucks it broke but what a way to go out. Learning and pushing this platform to the absolute max. Wonderful content! ❤
Its crazy to see how much you have been able to push the rotary engine all these years, I remember watching you years back in the old garage when you was still first building the 3 rotor with the old yellow lambo sitting next to it. Iv always loved the rotary so its nice to see someone show what the limits really are and how you fix it and make it stronger.
Rob, your channel is amazing to those of us who are rotary fans. The fact you and others are still taking this engine platform to new levels allows the rest of us to dream of what we could do to our rotary platforms!!!!
Mad Mike and the billet guys down under would like a word. They have figured out how to build one better than ive seen anywhere else. Good luck on the engineering project
Thank you so much for keeping it technical but still entertaining and not dumbing it down/bro-ing it up. Tribology is such a fascinating field of study and so important to our modern world.
Just watched your video on the Haltech channel and it was nice to see a summary of things you've learned without all the fluff. Really shows how far things have come and how much technology is packed into that car. Nerd stats are always awesome
I've been smiling through the disassembly, just admiring all the parts coming off and recognising the progress that they embody. And I was excited to see more. AND I love the fact that the 4 rotor is being flogged hard and isn't some kind of show pony trailer queen. Lets GO! ROTARY POWER!
Im amazed that its holding up to that much power as it stands. I think the extra bracing across the housings and irons that you mentioned will significantly reduce the wobbling caused but such extreme power. Excited to see how it comes along. Im sure your pockets are hurting, but im glad to see you are seeing this dream through. Best of luck team.
That was absolutely the best Valvoline ad I've ever watched. Probably the best plug I've ever watched! I don't know what or if there was compensation for it, but whatever it was wasn't enough! I could watch an entire video of you explaining how oil works! I want a whole video of how oil works in your engine! Kudos! I would wish you luck on the rebuild but you clearly have science, knowledge, and experience on your side so I feel you don't need much luck! Guess a bit of luck won't hurt. Best of luck anyway! You nailed this one!❤
All of this just gets me excited for the new phase of this project! After all of these years we all know Rob is going to push this beast even harder and make it work.
Rob you're really appreciated as a content creator and car guy. Thank you so much for putting safety first and just walking us through all the stuff as if we were right there. Loved your back music, your cut tos, the angles you used and just the way you put out content. Great work!
I love that this channel has made enough money to allow Rob to keep a smile even when he hurts the 4 rotor with a tuning error... That says a lot. Great outlook!!!!!
I was thinking about that recently. Didn't he say the 12-Rotor ain't much bigger than a V8, or atleast got the same mounting pattern as some chevrolet V8? The C8 should have enough room for that, surely.
HEY ROB ! WE MET ON A FLIGHT TO ATLANTA LAST YEAR, I NOTICED YOU AS YOU WALKED BY ME UP FRONT IN THE PLANE ! I AM A BIG FAN AND I AM ALWAYS AMAZED AT WHAT YOU HAVE BEEN ABLE TO ACCOMPLISH ! I AM PROUD OF YOU, KEEP BEING AWESOME !
Found out about your channel from Hoonigan and it puts such a huge smile on my face seeing how much love has gone into this car and how much you still strive to make it better and better. Amazing stuff!
I love it when you look at toasting an engine like it's a good thing. Then immediately deep dive into the forensics of the situation. Because: science. What a wonderful attitude.
When Originality sparks Curiosity you get an impeccable creator. TKO not for Dahm performance that's data. To be such a well rounded individual your patience brings new possibilities. An technically "Street Legal". Love all Dahm Journey's! Stay Gold! The Ending was the best Cliff Hanger did not want it to end. Thanks for everything you and your team bring
I loved the tear down of the engine after, just sorry that the engine had to blow. Nice video, looking forward to seeing how you fix and improve the engine.
I love how much you love your oil. The knowledge you have on it makes you that much better then a lot of us. You can do whatever however initially to you engine but the oil really is what keeps it all going.
Have almost zero knowledge of rotary engines (I know the concept), not involved in RX-7's in anyway, and barely getting back into the racing community, and this is one of the most interesting and educational videos I have ever come across.
Awesome video Rob, I saw the onboard footage from the other car awhile back and was waiting to see what happened to the motor. Thanks for the extra explanations that always make your videos so interesting. It's a pity it let go when you were well on the way to the 200+mph, but I am sure you will build it back better. The 4-rotor is an absolute weapon!
Motor does it's best to eat itself alive. Rob: *Exciting* 25:21 😂 Love to see you defying the odds of what can be done or what was thought impossible! Keep it up!
@29 min in this is what got me! It’s like the nature of duality’s! Cause and effect! To be & not to be! It’s wild! you have oil going in or out of the motor that pressure wave is created by the speed that you're spinning these at as well as the temperature and the viscosity of the oil. So the stickiness of the oil all of those things create this wave that has a very specific height and how much pressure it can handle. That wave comes from the energy of me spinning it or pushing it or moving it that is considered the loss of energy! it's required it's a natural part of the bearing to take some of that energy to create the bearing's pressure since energy is neither created or destroyed what does that energy turn into? Heat! heat will shake the party! Wow truely amazing! You’re an artist brother.
Even though the carr hasn't hit 200mph, we know damn good and well that it will have no problem reaching and surpassing that speed. You'll get there, and we are here for that moral support.
Pushing the car hard! I think you next iteration of improvements are going to have awesome results. Love seeing/hearing the car scream down the half mile.
Someone smart once said “left to their own devices, a turbo will either blow itself up, or blow your engine up.” I’m so glad this engine survived except for the “parts that are absolutely destroyed” even with 60PSI of boost. I can’t wait to see the future of this build, which is CRAZY to say considering everything you’ve ALREADY done. 🤯🤯🤯
When you said "this is the difference between a good viral video and bad one" was an insta-subscribe. Amazing RX7! Glad to see the man operating it is safe! Great content
this is what i love these video's for that you make, its entertaining, but at the same time I'm learning a basic understanding of the science that makes all of this all possible, not just with how you use it but also how we can use it to improve the engines that we built ourselfs
Whats Crazy is that when Rob starts to hit boost and is short shifting through 2,3,4 then you see the footage from the car next to him...Thats a fast car...And Rob is pulling away from the 'Fast Car' likes its in reverse. Thats Mind blowing.
having watched this channel for a long time I find it funnny how they laugh and giggle finding the broken parts on this motor, when a few years ago it would have been crying.
Even legends have bad days every now and then. You dont look at things as a lose or mistake you take it as a learning process. With all the R&D you've done on the car this year youll be able to address all the flaws and weak points in the car and engine. Next year that 4 rotor will come back better than ever and you'll hit that 200 MPH with ease. Watching Robs channel has changed the way i look at rotaries and ive learn a lot about the engine and how it functions.
Now I'm kinda curious if he can make a 500hp single rotor lol.
What would that sound like?! Please do this!
Yeah no kidding. Lets see it done LOL!
500hp, 200 ft/lb torque
And then slap it on a go-kart
All of the revolutions, for every minute
"This motor is perfectly fine except for the parts that are absolutely destroyed" - Rob Dahm 2023
I came here to say this xDDD I'M ABSOLUTELY DYING RN
Lol 😂
🤣👏🤣👏🤣👏🤣👏🤣👏
😂 the ad they didn't know they needed
1999 RX7 15000$
Just needs brakes and a cluctch, no low ballers i know what i got XD
rob actually managed to get me conditioned that when that engine blew my first reaction was excitement like "oh he's going to rebuild the shit out of this!"
Hahaha the engine conditioned me to be excited too. But it is a cool achievement to blow up the engine at full tilt not because of a mistake. Just raw power and limits of fuel/turbo
@@ChristianAdroverhe talked about it a bit at 31:31
Hell yeah! Rob is such an inspiration. He got me to start building my dream track toy I was putting off for way too long
@@ChristianAdrover no apex seal damage, just bent up the rotor and sheared a key on the multi-piece e-shaft.
@@greatestevar did you not have a cup of copium this morning?
I just found out today My daughter who is 13 has been watching Rob for a little more than a month. She's in advanced Math, Science, Steam. She said it's how rob explains everything and his excitement for engineering that keeps her watching because that's what she wants to do. So thank you rob very much.
There is a book I based my A Level physics project on called "Turbocharging & Supercharging" by Alan Allard. I found it a fascinating combination of practical advice and physics of fluid dynamics, she might like it.
STEM
@@Cjbarker2 Steam...there are 2 different programs. There is stem and steam
@@Cjbarker2 and art… it’s just as mentally stimulating and challenging as science tech and math. He didn’t misspell.
@@Cjbarker2you're either intentionally negating Art, or you're not aware that STEM is now STEAM where A=Art
_"An engine runs at its best the moment before it disintegrates."_ - Keith Duckworth; COSWORTH
To anyone that's actually been through the pain and suffering of engine building, this is for whatever reason, absolutely true. I can recall this a few times in my life thinking to myself what went wrong it was running better than it ever has I just roasted a Lamborghini! Then BOOM for no reason LOL
I've only blown up one motor, but man, it was feeling good right before!
So true my mr2 was flying just before it died
@@FrequencyOfThought agree that engins tend to run best before it blows.
tuned alot of 2 strokers profesionaly that run real good and costomers enjoyed there engines for a long time but sometimes with my own engines i done like rob to push the limit and sometimes the limit hit way hard and its just to tair it apart.
my last engine tuned for "minigp minimoto" i havent seen the piston on since spring of 2010 and it gives roughly the same power as it got built.
revs to round 14.000rpm 80cc used it alot on racetrack to fun on the street and a period drove it to work while the car needed a repair...
@@Will_M600 It's probably because whatever is holding it back from its full potential "self clearanced" itself.. Bwahahahah
i swear the 4 rotor hype train NEVER stops and im here for it
Dorito engines are beautiful. I will never be not hyped.
Any day with a 4 rotor video upload is a good day, we haven't seen this ol' girl for quite a while. The next chapter of the 4 rotor saga will be wild!
Mechanical engineering student, been working on cars my entire life, currently living with my aunt and uncle who are retired automotive engineers while I'm at school. That is one of the best simplified explanations of bearings and oil I've ever heard. Not something many people talk about, and something a lot of people get wrong. High mileage engines, if maintained correctly, should use the same oil they used when new because the bearings will be the same size and shape they were when new. The temperatures, pressures, and clearances are the same.
maybe? Introduce condensation, combustion by products, fuel, excess heat, and super high boost pressures and shit starts changing size, shape, and composition!
cheers:)
as a Physicist that’s completely wrong.
@@GodsFormula I've had more engines apart than you've seen in your life. I've rebuilt several engines. Have an engine I'm about to rebuild that has 509,000km on it, I'll be sure to measure bearing clearances before machining anything and they'll still be in factory spec.
@@XcoolcoolbeansbeansX sure thing coolcoolbeansbeans
@@boostaddict_if that was the case, there would be no need for any engine rebuilds in road cars.
And both you and I know that they happen… a lot… In the real world, things like cylinder bore coating wear down and lead to burning oil, which eventually gets you oil starvation and consequential loss of material leading to catastrophic failure. Just look at Kia, a 50-60k mile engine has no right in having such catastrophic failures, yet oil starvation is extremely common.
Real engines suffer fuel detonation, oil starvation, rich and lean conditions, all through various degrees through their lifespan, and those will proactively lead to your tolerances going down. And let’s not talk about engines made 50-70 years ago, when machining, fuel management and overal drivetrain technologies where not to modern standards
I’ve been waiting for more 4 rotor content for so long you made my day
Rob’s done more in the last five years than I have in the last twenty… fml, and most of chats. This is an epic journey. Be grateful to have witnessed it.
Don't be hard on yourself. You don't do TH-cam full time which also funds the builds. Take it as inspiration
I feel you bro I feel you bro I had dreams of 26b turbo as a kid na I see people are building them it’s so wild
Life moves fast ❤
All it takes is the right moment and the right opportunity to get stuff done. Prepare yourself to take full advantage of that opportunity, and you'll be golden
id say it's never a good time to do it. you have to be committed and not come up for excuses like its not the right time. @@asliceofloaf1984
At least it blew up trying to do something it wasn't meant to do, rather than blowing up when in it's normal duty! Signs of a solid build tbh given how much you've done with that set up already.
I’ve been out of the loop on the 4 rotor since about when he was doing the first couple dino tests, then I see this. I startled my girlfriend when I yelled “FIVE WHAT??” When he said he’s already done at least 5 near 200mph runs on this engine, and it still ran well enough to only blow when he accidentally boosted it WAY past spec trying to hit 6th. Absolutely unbelievable.
@@thedefenestrator2994 And he hasn't even really done much in terms of customising the engine it's self, other than his dowel hole work and porting. He's gonna CnC the new steels from scratch, and everything to be way beefier and Hold much higher clamping forces!
There's nothing more exciting to hear than "We are building our own engines" after seeing everything you guys go through to get that perfect tune and that perfect run out on the track. 👍
This is the title I’ve been waiting for
This is the video I’ve not been waiting for
I've been waiting 6 years how dare you
@@cozza819 Im right there with ya - I don’t think I’ve missed a video since SEMA 2017 😅
Watching Rob work on rotaries gives me the confidence to work on a rotary I don't have.
lmao same! i feel foolishly smart lol
Rob - I am a diesel guy and have just a street 1200HP (capable of 2000)... Duramax - Industrial injection block yada yada - and I have a massive steel girdle for bracing the entire aluminum block - i have lost thrust bearings and other thinga... but never had major block damage and its totally due to the girdle preventing warping.
I think you are spot on to put a steel girdle brace of some kind to keep the 4 rotor from warping - perfect plan - Way to go man... take it to the moon... you got this...
Yes more 4 rotor content, I can't get enough of this. I love the half mile runs this car does, I think it is the perfect vehicle for it. Thanks Rob and team.
I love Rob in there hitting buttons like Anikin pod racing trying to get his engine back up.
Im glad you finally posted this video, it's crazy how far you have come with pushing the rotary space and sharing all your knowledge about it openly! I can't wait for my Dahm 4 rotor engine!
I love how he explained oil and pressure waves.I can listen to him explain pretty much anything. He simplifies and makes stuff simple to understand. More great RD content!
Ya know what bro? I love watching your channel... Out of all the automotive channels that I watch, And I tell u what it's alot of them!!! Your channel is the one that I love the most... Why you ask?? It's cause you have a little of ABSOLUTE EVERYTHING!!! You BUILD cars, You RACE cars, You make me LAUGH my ass off a bunch, and the MAIN reason that I love your channel bro!!!! Is HONESTLY BUD, You and Isaiah, always "LEARN" me something!!! And to tell you the truth, I will be honest with ya, 9/10 times I watch car content to be entertained... But just the fact that yall entertain the livin shit out of me, and always teach me something NEW, & EXCITING, that I had NO clue about previously... Is to tell ya the truth, is just down right freaking AWESOME bro!!! I tell ya what brotha, if there are any school teachers out there watching, an reading?? They should take some of what your doing, and apply it to there lessons!!! I know every kid learns differently... But... Me PERSONALLY, I would have been excited to go to school everyday, if my teachers entertained me, as well as made me think.. I mean I know its not realy there job, But I always pay close attention to your videos... Its all the extra shit that makes me wanna learn, lik the little funny banter between Isaiah an yourself that's funny as hell one minute, and then the next minute, Your teaching me how to do my own Mill-Spec-Race-Wiring harnesses, ect. Just a quick example... Anywayz, I absolutely love your channel bro... Keep up the good work you two!! You keep on a making them, and I will keep on a watching the shit out of them!!! Thank you for doing what yall do!!! I really appreciate it, alot more than you even know yall!!!
🙃😜🙃 😁🤪😁
I remember when this was a Chassis being caged at a shop and it was just Rob still working on suspension geometry to this so many years later! Pretty wild ride and now your gonna be machining engines basically dudes living the gear head dream XD
I'm not a rotary guy (yet) but can't overstate how much I appreciate you getting granular into the science, mistakes, lessons and response. You might be my favorite car guy on TH-cam.
Surprise 4 Rotor Video?? Made my week already 🫶🏻
The process of the 4 rotor has been EPIC to have been a Subscriber during all the early development... Now to see your Really REALLY stepping it up to an in house CNC manufactured parts .. Rob my hat is off to you and your team... Isaiah is THE man!
Rob has mastered the hard out of his videos, now he's practicing hard ins. I feel like I started this in the middle of the video LOL
wait this IS the middle of a video, he shared this before!! The followup!
Hearing this guy talk about breaking down a motor, or explaining oil....... its a magical experience. Like ASMR for a car guy
Let's Go Rob, I LOVE it when you upload, you are so smart I learn something every time I watch your videos. I cant wait to see the engine you build!
I've been following Rob since I was in high school. 17 years now, and I'm still amazed by the intelligence you posess. I love the attitude....break it, find it, fix it, send it. atleast IMO ... Thank you :)
Man I've been following this channel for a number of years now and was aware of it for quite a while before that point. The further I get into my engineering degree the more i appreciate channels like this. I'm very excited to see where this will end up going.
I've never seen someone excited to blow a motor, except for Rob. "it's beautiful, this is exciting" then you went Rob Nye AF which was amazing, along with the BOMB at the end. Insane video, truly amazing. You deserve your own TV show. Too good.
Imagine how fast it would go without the drag of a missing rear screen.
If you’ve seen wind tunnel testing, then you’d know that’s not effecting it as much as you’d think. Robs a smart person, if it was gonna hold him back that much, there would have been one put in before this event.
it missing isn't really causing anything as long as the wing isn't there. the bigger issue is the carbon splitter/plate pulling away from the bottom of the car. they're likely going to have come up with a better way to strengthen it and smooth out the transition from the bumper to the splitter so it's not trying to rip it off the car. now if they were doing track stuff, 100% the window needs to be there because it's effecting the air hitting the wing.
He needs it out to let out all the smoke.
it really does make a big difference@@1216jimmyz
@@1216jimmyz you're so, SO wrong. It VERY much matters. You've got a giant opening where the air is expecting a surface, so that creates incredible amounts of turbulence that will make the rear end hop all over the place. The wing won't be as effective, either. Rob isn't concerned about it not because it doesn't matter, but because the car simply isn't built up to a point yet where it matters more than having a bulletproof engine.
I love watching your content. I've been watching since back around the time you brought out project Lambo. I see shit you do that most of us dream about doing.
Best part is, no matter how much work you put into the car, you WON'T stop until it's either perfect, or exactly what you want. And if you get something to that point, and then something better comes out, you're not afraid to tear it all apart just to redo it again.. Love the passion brother!
Rob I notice you don't wear a hans🤔. Also change out that cheap racequip helmet please😊 that thing must weigh 5 lbs🤔maybe 6 with the gopro, have to protect your neck in this fast car. A Bell, stilo,sparco or simpson carbon weigh around 2.5 to 4 with the hans posts, the weight makes big difference on your neck 🤗. You got the lightest wire in your engine harness put the lightest helmet on your head😊 Thanks for the great vids
Everytime I put on a Rob Dahm video, I might as well make some popcorn becuase its always a journey of a movie. Its crazy how much he can cram into 30 mins an still make it flow perfectly. As Always Rob, Fantastic Video!
Rob is an absolute legend. The ending was amazing. I look forward to the details on rebuilding the engine!
Thank you for all the content of trials and tribulations to get to where you have. It truly is an inspiration for me to try and keep pushing. Depression is a hell of a thing, and it's hard to be motivated. Seeing your passion and fortitude in tough situations, going through the process to make sure everything is still good and overcoming issues, it makes my little project feel so much more doable since there was a day where you were just like me, a normal dude with a dream turning wrenches in his spare time. You're my favorite part of grid life the last 2 years, though I left you alone this year since I didn't want to interrupt you getting the 3 rotor ready for your time attack. From someone who's been watching for about 10 years now, thank you for keeping with it.
1:45 Seeing a rotary so violently do a burnout to the point where the entire suspension is flexing is impressive and just shows the insane amount of HP and Torque it is making.
I love how Rob has set and forgotten all his patreon tier descriptions, and that they're all almost 5 years out of date. Crazy. Mad respect. Doing Gods work.
an incredible journey with rotary engines. Congratulations to the entire team for your magnificent content.
Greetings from Portugal.🤟
i don't know a ton about rotaries except for they sounded amazing when i was drag racing in my 20s... I love how technical Rob is about angles, weights, symmetry, balance and everything for a rotary... Some other youtubers take apart their motors after blowing but the precision he has is, in my opinion, unparalleled in this social media car-universe.
3:17 finally a proper full pull no short shift, it sounds like a beast
I can't help but think that you're a certified car legend in the making man. All this knowledge and trial and error in order to make the best rotary powered car. When this man starts chilling, in his 60s or whatever. The stuff he'd have achieved will put him in the same leagues as Mr.Nagata and Nakai san and all of them
Yeah even the steve morris smx can only handle 70 psi max...so you hitting 60 is alot. Im really impressed! I know it sucks it broke but what a way to go out. Learning and pushing this platform to the absolute max. Wonderful content! ❤
You know you've made a good engine when someone is comparing it to a smx
The bearing explanation was great, can't wait to see the new billet motor build!
Bummed for the mishap, but excited for the future! Love the science lesson at the end. Keep the videos coming Rob & Crew
Its crazy to see how much you have been able to push the rotary engine all these years, I remember watching you years back in the old garage when you was still first building the 3 rotor with the old yellow lambo sitting next to it. Iv always loved the rotary so its nice to see someone show what the limits really are and how you fix it and make it stronger.
Amazing you saved the engine as a whole after that, just shows how well built it is.
Rob, your channel is amazing to those of us who are rotary fans. The fact you and others are still taking this engine platform to new levels allows the rest of us to dream of what we could do to our rotary platforms!!!!
That's the right mindset bro, Never Give up
The hairline difference between genius and sunk cost fallacy… it’s a hard one. Rob is on the right track though.
Mad Mike and the billet guys down under would like a word. They have figured out how to build one better than ive seen anywhere else. Good luck on the engineering project
I cannot wait to see the machining of the new engine parts
Thank you so much for keeping it technical but still entertaining and not dumbing it down/bro-ing it up. Tribology is such a fascinating field of study and so important to our modern world.
Just watched your video on the Haltech channel and it was nice to see a summary of things you've learned without all the fluff. Really shows how far things have come and how much technology is packed into that car. Nerd stats are always awesome
Rob geeking out on oil makes me so excited, I wish I knew more / had more experience to appreciate this fully!
I've been smiling through the disassembly, just admiring all the parts coming off and recognising the progress that they embody. And I was excited to see more. AND I love the fact that the 4 rotor is being flogged hard and isn't some kind of show pony trailer queen. Lets GO! ROTARY POWER!
Im amazed that its holding up to that much power as it stands. I think the extra bracing across the housings and irons that you mentioned will significantly reduce the wobbling caused but such extreme power. Excited to see how it comes along. Im sure your pockets are hurting, but im glad to see you are seeing this dream through. Best of luck team.
Probably needs more dowels too.
That was absolutely the best Valvoline ad I've ever watched. Probably the best plug I've ever watched! I don't know what or if there was compensation for it, but whatever it was wasn't enough! I could watch an entire video of you explaining how oil works! I want a whole video of how oil works in your engine!
Kudos! I would wish you luck on the rebuild but you clearly have science, knowledge, and experience on your side so I feel you don't need much luck! Guess a bit of luck won't hurt. Best of luck anyway!
You nailed this one!❤
You need to shorten that shifter, you are reaching way up and over. Takes so much time to do just that, not to mention it just looks uncomfortable.
you need the leverage on a sequential
All of this just gets me excited for the new phase of this project! After all of these years we all know Rob is going to push this beast even harder and make it work.
Man that rotor dent tho
Rob you're really appreciated as a content creator and car guy. Thank you so much for putting safety first and just walking us through all the stuff as if we were right there. Loved your back music, your cut tos, the angles you used and just the way you put out content. Great work!
As a auto tech (BMW-Mercedes) I find this episode satisfying. Love the engineering you guys put into that motor. Curious on RPM max on those runs?
I love that this channel has made enough money to allow Rob to keep a smile even when he hurts the 4 rotor with a tuning error... That says a lot. Great outlook!!!!!
S tier content. Dahm's team is going to be the stuff of legend.
The ability to shear that key, is insane! Just think the stress on key that also had to make it past the taper fit. This is awesome stuff!
I knew my boy would come through on his promise! Cant wait to see the c8 when you finally 4 rotor that thing.
I was thinking about that recently. Didn't he say the 12-Rotor ain't much bigger than a V8, or atleast got the same mounting pattern as some chevrolet V8? The C8 should have enough room for that, surely.
@@JackTheRipper2613same footprint and mounting as a big block chevy, too big for the ls-sized spot in the c8
Isn't the C8 getting the 6 rotor?
@@Hugh.Gilbertnah, the 6 rotor is too long, he said he could put it in a diablo but he would need a new roller one not his current one
@@Hugh.Gilbert I'm not sure, is even anything been really planned for the C8 as of now?
HEY ROB ! WE MET ON A FLIGHT TO ATLANTA LAST YEAR, I NOTICED YOU AS YOU WALKED BY ME UP FRONT IN THE PLANE ! I AM A BIG FAN AND I AM ALWAYS AMAZED AT WHAT YOU HAVE BEEN ABLE TO ACCOMPLISH ! I AM PROUD OF YOU, KEEP BEING AWESOME !
Rob felt like the Bill Nye of rotary science in that last bit
Did you know that it is the same Nye from Nye Lubricants. Big Fan of Tribology Bill Nye.
Been here since the beginning of the build. Loving every upload. The passion he has, every car guys can relate
Found out about your channel from Hoonigan and it puts such a huge smile on my face seeing how much love has gone into this car and how much you still strive to make it better and better. Amazing stuff!
I love it when you look at toasting an engine like it's a good thing. Then immediately deep dive into the forensics of the situation. Because: science.
What a wonderful attitude.
The Tony Stark of rotary engines. Love watching Rob do his thing pushing those motors. His passion for cars is contagious
When Originality sparks Curiosity you get an impeccable creator. TKO not for Dahm performance that's data. To be such a well rounded individual your patience brings new possibilities. An technically "Street Legal". Love all Dahm Journey's! Stay Gold! The Ending was the best Cliff Hanger did not want it to end. Thanks for everything you and your team bring
I loved the tear down of the engine after, just sorry that the engine had to blow. Nice video, looking forward to seeing how you fix and improve the engine.
I love how much you love your oil. The knowledge you have on it makes you that much better then a lot of us. You can do whatever however initially to you engine but the oil really is what keeps it all going.
Have almost zero knowledge of rotary engines (I know the concept), not involved in RX-7's in anyway, and barely getting back into the racing community, and this is one of the most interesting and educational videos I have ever come across.
I can't wait to watch this engine building series. That is definitely the most intense thing I've seen a car youtuber attempt.
What a dream job it would be to work for Rob! He’s a wealth of knowledge and never ceases to amaze me!
I Respect your passion brother 🙏
Awesome video Rob, I saw the onboard footage from the other car awhile back and was waiting to see what happened to the motor. Thanks for the extra explanations that always make your videos so interesting. It's a pity it let go when you were well on the way to the 200+mph, but I am sure you will build it back better. The 4-rotor is an absolute weapon!
That 4 Rotor Motor Gave it's all and then some. Kudos Rob
Motor does it's best to eat itself alive.
Rob: *Exciting*
25:21 😂
Love to see you defying the odds of what can be done or what was thought impossible! Keep it up!
We about to see Dahm build a "hyperdrive" of a 4-rotor, vibranium included. Super excited.
TH-camr gear head heaven, love it!
2strokestuffing makes his own engines!
very interesting and awesome video keep up the amazing work!
He does
@29 min in this is what got me! It’s like the nature of duality’s! Cause and effect! To be & not to be! It’s wild!
you have oil going in or out of the motor that pressure wave is created by the speed that you're spinning these at as well as the temperature and the viscosity of the oil. So the stickiness of the oil all of those things create this wave that has a very specific height and how much pressure it can handle. That wave comes from the energy of me spinning it or pushing it or moving it that is considered the loss of energy! it's required it's a natural part of the bearing to take some of that energy to create the bearing's pressure since energy is neither created or destroyed what does that energy turn into? Heat! heat will shake the party! Wow truely amazing! You’re an artist brother.
Even though the carr hasn't hit 200mph, we know damn good and well that it will have no problem reaching and surpassing that speed. You'll get there, and we are here for that moral support.
Holy shit yall are SO LUCKY that thing didn't explode on the track. God bless yall and your car.
Pushing the car hard! I think you next iteration of improvements are going to have awesome results. Love seeing/hearing the car scream down the half mile.
Someone smart once said “left to their own devices, a turbo will either blow itself up, or blow your engine up.” I’m so glad this engine survived except for the “parts that are absolutely destroyed” even with 60PSI of boost. I can’t wait to see the future of this build, which is CRAZY to say considering everything you’ve ALREADY done. 🤯🤯🤯
When you said "this is the difference between a good viral video and bad one" was an insta-subscribe. Amazing RX7! Glad to see the man operating it is safe! Great content
this is what i love these video's for that you make, its entertaining, but at the same time I'm learning a basic understanding of the science that makes all of this all possible, not just with how you use it but also how we can use it to improve the engines that we built ourselfs
Whats Crazy is that when Rob starts to hit boost and is short shifting through 2,3,4 then you see the footage from the car next to him...Thats a fast car...And Rob is pulling away from the 'Fast Car' likes its in reverse. Thats Mind blowing.
having watched this channel for a long time I find it funnny how they laugh and giggle finding the broken parts on this motor, when a few years ago it would have been crying.
There's no pressure or pressure wave created by two surfaces sliding across each other.
It only creates shear stress in the oil.
Way cool watching you figure things out, Rob. Brilliant. Thanks
Even legends have bad days every now and then. You dont look at things as a lose or mistake you take it as a learning process. With all the R&D you've done on the car this year youll be able to address all the flaws and weak points in the car and engine. Next year that 4 rotor will come back better than ever and you'll hit that 200 MPH with ease. Watching Robs channel has changed the way i look at rotaries and ive learn a lot about the engine and how it functions.
I love that he just keeps going man. No matter what.
Rob shows how underrated the Rotary engines are.Dr. Felix Wankel would be proud of you Robb
Loved the section about lubricant and bearings. Informative and super clear.