Everything WRONG with the AWD 4 Rotor RX-7 at Sevenstock and SEMA.

[@arcadiagreen150]

The only thing wrong with the 4 rotor is that it's not done yet

[@stpaulirocker]

... and that is perfect!

[@Finnspin_unicycles]

Well, and the things that were rushed to get it to Sema shows, without really thinking about it. Like that horrible steering situation.

[@ivangrajales2000]

Facts

[@XBullitt16X]

pretty much haha

[@94JAVS]

Sean Cunningham thanks

[@ryan3088]

"So we're hearing so many rotary noises!" *random Prius included*

[@itzmadness5897]

ily

[@Elgonidas]

Billet 4 rotor AWD Prius

[@aallffoonnssoopotato8280]

It's 13b swapped

[@ErgoProxyYT]

Rotorius.

[@wrth]

Elgonidas gets 20 mpg because it's a hybrid rotory

[@mianhamdan9307]

"I'm used to 8 inches" -Rob Dahm

[@aarontena]

He didn't say no homo

[@robotm99]

Lightweight

[@Realbanditt1]

Mian Hamdan lmfao comments dont make me laugh but u sir made me die 😂

[@bigdfitness5020]

@Mark Povtarev he didn't say he's used to taking 8 inches, he just said that he's used to 8 inches 🤣🤷‍♂️

[@xcruzrr6]

@@bigdfitness5020 Changes nothing lol

[@albi2k88]

10:25 I think PWM is Pulse Width Modulation not Management.

[@shelbyz1988]

@albi2k88 yep, you modulate the duty cycle or “on” time.

[@tjdjultima]

Lol came right to comments as soon as he said it nice work

[@ShaneCarles]

You beat me to it!

[@go2yanks]

Haha MissMiss not really...

[@Cam710]

@Haha MissMiss I love it, someone helps to spread information and teach the proper thing and people like you call them (what I'm assuming was meant to be) a douchebag. Keep it up bud, people really want to be like you.

[@JAMIT87]

Rob: "This is not a wide-body Supra, its an actual attempt at something unique" The rest of SEMA: *TRIGGERED*

[@appv12]

Flash forward 50 years, Rob is sitting on his porch reminiscing about what an absolute bro Isaiah has been.

[@ElMosqito]

2:57 loose belt is one thing, but look at the pulley! O.O

[@joosekraft3405]

yea seems a tad bit too wobbly to me

[@christinadawson6482]

Rob, being at 7-stock must be a highlight of your year if not the best time of the year. I can empathize with that, I think. Being with like minded individuals passionately talking about something you love so much WITHOUT egos is such a special thing. I'm a wine person and unfortunately those type of people generally have a negative connotation attached to them because they're regularly pretentious and sometimes pompous... For the record l am not, but unfortunately I cannot talk to people about it because of the aforementioned connotation. When I'm with people (rarely) where I can talk with people about something I love (wine) with zero ego I'm the happiest. It's such a lovely feeling, and I'm happy you get to experience moments like that at 7-stock AND Sema.

[@JMartinni]

"Euro rotary - that's a bad combination" You know where the Wankel comes from, yeah?

[@jamestroy9751]

jeeez don't want knowledge from americans dude :D most of them even don't know names on tools, which they use :D

[@NendoCrescendo]

James Troy You have a hella gay name. Stop hating and pull out your four rotor if you’re “BeTtEr ThAn aMeRicAnS”.

[@NendoCrescendo]

Do you know where this rotary was made? SMH

[@jamestroy9751]

:-*

[@ValentineC137]

@@NendoCrescendo :**

[@miahmcbride5415]

I can't wait to see this car at SEMA 2025!! It's gonna be so close to running by then!!

[@juanmaldonado2096]

😂😂😂

[@Be4tJumper]

3:47 come on.. i know that's what your eyes are doing but don't move the camera as well

[@oscarzt1652]

i thought id check the comments see if anyone else noticed that

[@alexygagne268]

@@oscarzt1652 same

[@jakelovescinema]

nice catch lmao

[@Benwarnock1]

Oscar Thorpe same

[@shouldbeasy9721]

Not just that, felt obligated to leave it in.

[@JasonDFD3S]

Was really curious to know RE-Amemiya thoughts and his point of view. I'll be there next year.

[@evilblackcat6357]

Seriously! If I were Rob I'd be glued to that man....no homo.

[@-TK-]

I kinda wanted him to show us more dialogue wit the Japanese guys. I just want to use my weeb skills to hear isami Amemiya roast his ass

[@F3Ibane]

「このバカは間違った青の色合いを使用していました。」- Isami Amemiya

[@evilblackcat6357]

@@F3Ibane LOL

[@YouilAushana]

Good eye, "The mustache of the east"! He's probably saying, "This is dope, only in america. Land of excess!" He runs stock 2mm apex seals on his cars and a basically stock 20B in the JGTC.

[@Ezthereals]

Have a shot every time robs said "Really sharp eyed people"

[@GTurbski]

It would take a really sharp pen to write down everything that still needs to be done.

[@Cjbarker2]

GPMFG As is the case with every good project

[@GTurbski]

@@Cjbarker2 without a doubt. Just poking fun at Rob's commentary.

[@Torchedini]

He should just add a really everytime it adds up one. So at the end you would only have to count the amount of really's he says.

[@nerde3031]

I don't/ not sure If I have ever commented on a KZbin video but I have been watching and I have seen some amazing things in this build that inspire me. Cars have been a hobby of mine since I was 14, when I was 26 I was at a cross roads and decided to do it as a career and to be honest it killed my passion for many years. I recently left the trade professionally as a Nissan Master technician, red seal journeyman with Cummins certification for Nissan. It took me a while to really want to touch my car for fun anymore but I found you on KZbin and put you on the 50" in the garage and lack of experience or what have you never stopped your passion and you have truely helped me remember why I loved and now love cars again so much. Keep doing what your doing and if your ever in Edmonton and need help I'm here.

[@DanMarcelino]

I can’t wait to see this thing get tuned!

[@sieve5]

The content pacing increased very quickly in a short period of time, thanks for all the awesome videos to watch rob. Isaah, thanks for helping you're the man.

[@WailingRaven]

Rotary engine: _Starts_ Auto-generated captions: [Music]

[@neilimax5650]

That sounds about right.

[@pikarouto]

o god that 4:02 rotary sound!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@DDBmaster]

Search 787B rev test. You re welcome

[@majcrash]

It's a fart.

[@felixxd8885]

Angery Bumblebeez

[@gsfbffxpdhhdf7043]

NoNoNoNii have u heard a big block carb engine it sounds much better and revs to 4k😊

[@JimBrodie]

Carlos is a huge wealth of knowledge, he'll help keep you on track.

[@lexus_offroad_adventures]

Someone tell autoclub to re-pave that parking lot. I’d do more auto crossing there if it didn’t shred my tires

[@arcadiagreen150]

Like 12 grit sandpaper

[@jerryperez1080]

Honestly I went through a set of tires in half a day but that track has a different grippy feeling to it.

[@metrocaptain]

I definitely support your work, Rob. Keep it up! Can't wait until you have it all together and can show the world your dream. Shout out to your friends that help you with their time and support. You couldn't do it without them!

[@Tunerguy21]

Must've been nuts having Amemiya-san check out your car.

[@randominternetguy]

Yeah all i remember about mr. Amemiya is he's a bad bass with a rotary, so pretty cool.

[@jefflin1400]

To have a legendary rotary tuner like Mr. Amemiya checking out your car is probably as good a complement you can.

[@thelonewanderer420]

Excuse me for my uncultured swine-nes but I’m guessing he’s the guy who created re-amemiya

[@Tunerguy21]

@@thelonewanderer420 Correct.

[@Shadowboost]

@@thelonewanderer420 yes. Legend

[@cyntax_error]

I tip my hat to you guys; this is a truly epic build. Problems aside, what you have actually achieved is nothing short or miraculous!

[@gordowg1wg145]

Ah, I was wondering how long it would take to sleep off that intense work rate required to get the car to SEMA. Don't worry about the comments, we're all trying to help, even when we criticise ;-) Remember, even in F1 they make mistakes and even when they don't, they are continually refining the car - and their top teams have budgets that have been around a HALF BILLION dollars, with over 500 employees, and you are basically working from a large shed with a few helpers, learning as you go along, on a VERY tight budget. You're doing something you love, something most of the rest of us wish we could. 2:35 - wait - you had Roman helping? With the front coil-overs, you may be better off, for unsprung weight, mounting them the other way round - remember with a cantilevered suspension the unsprung is to the top and sprung to the bottom, and you want to minimise the unsprung. 9:30ish, yup, the chassis is quite differently loaded, and subject to much higher corner loads - I was rather concerned about the stiffness in torsion (twist), as it makes the suspension tuning rather difficult and can cause handling issues. Triangulation is your friend. 11:25, think I may have mentioned that before, one BIG problem - and I have seen a LOT of people much more experienced than you do the exact same thing - is that the fan shroud is much to close to the radiator matrix to efficiently draw through it closer to the edges of the matrix, it will be great in the middle, though. You can use a couple of suitable sized fans which ewill help, but the greater the clearance, the better the overall cooling will be. Depending on the specific fans used, when the vehicle is up to 10-15 mph the vehicle will be providing around the same air speed and much above it the fans can even be a restriction. You can improve things by making one way valves for the airflow by opening up the shroud and pop-rivetting thin rubber over the openings - just along the top edge, as otherwise they won't work. You can see what I mean on many production vehicles and they will reduce the negative affect of the shroud being too close to the radiator. 13:30 - not a problem - not only is it easily strong enough (just make sure it is bolted tightly) but the suspension and braking loads through the top wishbone are actually rather low... the bottom arms, however, take a LOT of suspension and brake loads and you need to check the load specifications for the joints ised - it it is tight, you should still be OK as that (apparent) size joint is a lot stronger than many may realise - but different manufacturers use different design and materials, so, again, check. Remember, offraos and statium race trucks use similar setups and they REALLY pound their suspensions.

[@justinweikman8882]

just good for yourself man you have made so many innovations yourself and you inspire us all, im absolutely sure you knew about everything anyone said about your build and that you had to make the best of the show.... we all that know where you are and understand your situations to perform but at the same time you are so determined to make it perfect. im sure the community thanks you and so does all the enthusiasts!!!

[@twiztidxintentionz]

FUCK YES!!! I've been highly anticipating a update!!!

[@cts12321]

Biggest takeaway from this is that I am not a sharp eyed person.

[@JerryC25]

cts12321 lol

[@st4ch00]

No one, absolutely no one on the internet moves subtitles up a bit for us trying to catch as many details of the video as possible by resizing video on our phone's. Thank You Mr Rob Dahm. Attention to detail on the highest level🙅🏼‍♀️ 🙆🔼

[@miguelmontero4003]

0:59 I made it in the background 😂

[@JasonDFD3S]

with a hottie too. Way to go.

[@madmax2069]

@@selfmadefortune3254 FFS

[@robertbloss4409]

Rob, you mentioned the radiator fan might have some issues. I think what you have is sufficient however, it would be beneficial if you install "trap Doors" minimum of two on each side. The concept is as you drive the air pressure in front of the radiator will push open the doors which allow unrestricted air flow. As the vehicle comes to a stop the doors naturally close and positively seal while the fan draws a negative pressure through your fan opening. The doors are typically made out of rubber but could be 3D printed with a flexible resin if you want a custom shape with some rotary artwork on it (maybe even shape them like rotaries for fun). The 3D printing filament is typically called "TPE or TPU". If you want some inspiration about the doors google "radiator shroud doors". One caveat, the fan shroud must be sealed to the radiator pretty good to allow the fan to do its job when the vehicle stationary. Keep up the good work. It is refreshing to watch you go through the discovery process of troubleshooting issues that come up with a complicated build. I go though this process every day as Engineering Manager developing automation solutions and robot work cells. People claim doing new things is easy, It's not. People also love to criticize without any ideas on solutions, don't listen to them. Keep an open mind and challenge the status quo. Sometimes lacking experience can lead to new ideas that a closed mind would think of. For inspiration I keep this quote hanging up in my office. "A closed mind stumbles over the blessings of life without recognizing them."

[@jordangray679]

As someone who has grown up with Mazda’s and is now a tech with them, this is simply beautiful, I’d love to go there one day and look at the vehicles that paved their way to what mazda is today.

[@kornfrk10]

I still love the term Brodozer. Says so much about those builds.

[@CRAZYPSN510]

Can’t wait to see this build get fine tuned and fix any errors made. All of us will be in for a treat the day that this car is finished. I REALLY want to see how it al will come together. Don’t give up Rob you master piece is almost there!

[@Killertator]

Proud of how far you've come!

[@Gilliatt83]

Carlos is a legend bro.

[@matel9985]

nice to see him

[@Gilliatt83]

@@matel9985 yop

[@davidmaye3580]

You should redesign the cantilevers with a half moon (hook) shape at the end to clear the pipes.

[@electricsupercar]

I love your community!

[@steveveness3829]

G'day from West Australia, Rob😉🙂👍👍 As a 3rd gen Engineer I like that you came clean with Ethics, Honesty and Integrity. This is not my build therefore said nothing in any of my comments. What I AM going to say now is every new and unique car build ever created always has teaching problems. I AM still taking my hat of to you for going for it. 😉🙂👍👍

[@ginger_nosoul]

We love and support you Rob!

[@manuelsolari4112]

I love how the BOV's are just tacked in to place

[@ThaScruffShop]

@3:00 and during the opening, one of thoses pulleys look wobbly. I've been waiting on an update and when I got the notification, My heart jumped. Did you hypnotize me?🤣

[@lanekuchinsky7908]

Early squad wya?

[@Avboden]

Sup

[@Matt-yd3wk]

Yo

[@GlitchBomb]

Proud of your works Rob.. Keep it up man

[@416street]

coming from someone who hates seeing it on untuned shit. thank you for not revving your car like an animal. gives me so much more respect for the build and you seeing that

[@iJkinged]

The world needs more of this and less bro dozers

[@sllinky1245]

Was watching a boosted bois video immediately clicked on this video

[@brentgus2505]

Kyle would understand

[@berrytharp1334]

*Cough* *Cough* homo *Cough*

[@MarkJames-yq4hz]

Mr Dahm you owe the sickist car on the planet

[@MarkJames-yq4hz]

Yeah boiiiii

[@sllinky1245]

Berry Tharp cough cough your name is gay cough

[@budworx1639]

You need to get stiffer springs for the front. You can put longer springs but if you're adding 2.5-3 inches of preload then the spring is deffinatly not working as intended.

[@Matt-yd3wk]

I’m here for the 4 rotor but I’m also here for the not so subtle dirty jokes

[@LoupozE30]

And Robs bromance with his fab dude

[@amird2043]

Also Rob, Your dampers mount to the middle of a tube which will cause bending and increase you compliance (or decrease your stiffness) which is not desired. Maybe weld another tube to the point where shocks are mounted (make it in tension). Just my two cents on your suspension. Great job.

[@kenabi]

hey, progress is progress, it'll get there, just keep at it.

[@Dixby_floppy]

Lifes a garden, dig it. I love rob and the content. Keep on keepin on man

[@84gssteve]

Looking great. Find some mini CV joints for the steering shaft so you wont have to worry about the angles. I'm looking into getting some for my rack/pinion converted FB since it has the same lumpy steering feel.

[@2KUSH11]

I am super glad you are building this first off. Second it was killing me how every cut scene had parts taken off lol

[@nikitashkredov8901]

Super duper hella mega stoked to see this car finished

[@koizuminaoki4463]

NO! BE STRONG BRO. I'M STILL SUPPORTING YOU FROM THE MOMENT YOU STARTED THE PROJECT.

[@randalltufts3321]

Rob where the piping is so close, how about a small half moon relief built in to the area. It wouldn't actually reduce flow. Look into Bernoulli effect. You may be pleasantly surprised. And it will give extra clearance even though you are adding taller spring's. The steering solution is even simpler. They now make a fantastic electric power steering box that sets inside the car. It's amazing and so easy to set up. I've seen the car later on in videos and it's amazing. Seeing the improvements and the 1000 mark reached was a blast. Thanks for sharing the ride.R&M

[@josephvavken3235]

Even if you have to redo things rob all of you are doing amazing work...trial and error makes perfection can’t wait for next video

[@trevorjaster4072]

I have been following this for so long and will continue became it is different and special

[@spaceboundmg]

Come on guys lets comment and share the videos so Rob can get some more money from YT!!!! Keep it rolling Rob i like your work so much!!

[@cdnbcn6164]

I can't wait to see this car finished.. what a labour of love

[@terrontitus4771]

Yes! we do support this. Well done.

[@codyserr7331]

Keep em coming Rob!! Love the videos

[@gmonsen]

Hi, Rob. You've got the best guys in the business hanging out. Logan and Carlos. They both worked on my 3 rotor NA.

[@troels54]

Pulse Width Modulation Rob ;-)

[@djthundercataus9353]

Yo Rob, fk da haters, you and your team are doing a great job, this is a one off CUSTOM car and nearly everything is hand fabricated and made in house, not brought like every other project car out there, keep up the amazing job doing what you said you were going to do, cars of this magnitude and customisation are something that should join the car community together not separate them

[@jnamet]

Keep up the good work guys, wish I could come and see this in the flesh!

[@ascorbic123]

It would be really cool to see you do something on RE Amemiya. They had some sick cars that showed up on hot version

[@BlueDually4x4]

Almost need to make the alternator bracket hold the bearing for the steering shaft.

[@gpatty6538]

BlueDually4x4 dunno about engine vibrations and movement in a steering shaft. Seems like a bad mix imo

[@rjaybruhh]

0:50 *_LOGAN!_* They actually used his insane 11,000 RPM 4 rotor for the RB in Grand Turismo!

[@KXSWORKS]

FINALLY AN UPDATE!!!

[@Therealgigabyte]

Very nice. And those Raycons are awesome, they have a LOT of BASS that makes everything thump. I like em for that more than bog standard earbuds.

[@Theblockninja478]

I've been waiting for this 🙏

[@Jordan_Rush]

0:35 - I can only wonder what the legendary RE Amemiya though of Dahms creation!

[@protator]

Well, the first hoonicorn's chassis is actually not the best design. Which is the core of the problem, many parts were obviously designed, not engineered. Designed to look cool in b-roll and to be easily replaceable. Those a-arms and rockers are hillarious. I mean, an 18 inch aluminum part in bending? You could make a bell crank out of steel that is lighter, stronger and more durable for a fraction of the cost. And seeing the lack of structural rigidity in the front frame I'm certain hat bolt-in crossmenber is gonna buckle the first time he hits a corner. Don't get me wrong, not trying to hate. I love this build and admire the amount of work and passion that go into this project, but it really should've started with a proven racecar chassis, not an eyeballed garage-copy of a badly engineered stunt-car. The Hoonicorn, despite all compromises made for the stylish quick-change suspension, is a far more rigid construction than the RX7, and even that car visibly twists in corners. Considering all the CAD work Rob has already done, I think he should step back for a moment, do some basic FEM-analysis on the chassis and make sure it's worth the expensive parts he keeps bolting to it. Asking somebody to go over the suspension geometry would be a good idea aswell. The geometry he copied is based on the Hoonicorns wheelbase, trackwidth and weight distribution and could be worlds away from what this car actually needs to drive properly. Static instance centers are only part of the picture but they're the minimun of what you should actually calculate on a scratch-build performance chassis. I just hope this doesn't end bably.

[@IrishPikeHunter]

Keep up the good work rob,cant wait to see her finished 👍

[@CrashBandicoot0987]

pause at 4:18, that is a thing of beauty to look at.

[@martingidaszewski7342]

Love this beast Rob, can’t wait for you to actually drive it

[@Eigthcypher]

PWM=Pulse Width Modulation. Awesome video!

[@RGHTBrainDesignDrive]

Nice work Rob.

[@MRanzmo]

robdahm is like the baby-yoda meme. so humble

[@natepierce1281]

A true sema build. NAILED IT. Half thought out and finished. Glad you are pushing through the rough stuff.

[@jimjohnson7931]

Oooo dat # 77 car is just a piece of artwork. Amazing

[@jameshanna3672]

Killing it rob. Keep it up.

[@shaunvito87]

As much as everyone hates should cut off endings I think it's hilarious

[@KartiacKID]

1) Check out flexible shafts for the steering shafts. I believe the bad obsession motorsports mini Cooper build videos have a solution for your steering rack arm. You could use a flexible shaft which an aerospace company in the UK makes flexible shafts and flexible drive shafts which should be able to handle your torque loads and provide some new mounting possibilities for opening up easier mounting solutions for tight spaces. I think the company is called “S.S. White Technologies UK Ltd” for flexible shafts and flexible drive shafts. 2) I know it kinda sucks but check out the some electronic steering systems like the newer corvettes use. I know you’d probably prefer the true analog feel though.

[@somecoffee341]

11:22 "euro rotary ... That's a bad combination" xD Mercedes ? I hope that pun was intended

[@ItzFitzyFitz]

I support what you are doing 100% you are one of the reasons why I bought myself an FB

[@anomamos9095]

Move the steering rack up to mount on the top of the cross brace above the control arms making it a straight shot to the steering shaft. The only reason for it to sit low is weight distribution.

[@lettersandnumbersuc]

The steering shaft’s functionality was just an after thought until you realized it’s kinda of important from the start. :-) It’s a great start though. Still looks good enough for all eight inches of your Holly-wood style. Fake it tell you make it.

[@sugardaddytrump7599]

Sema 2040 we will see this finished, when they get enough clout off their vid titles xD

[@redpandaassasin6861]

Watched one of your videos with Racons in and oooohhh boy!! Rotary's sound GREAT with them!! I highly recommend getting some! If I knew I could get a discount through you I would get them from you.

[@mikeymang101]

Bravo on that closing argument!

[@gsxrpat6147]

Proud of you too for not slapping your foot done on the loud pedal. Nom nom nom, now for the final feels coming in

[@thedev2f]

I can't wait to see it running right I'm in love with this rx7

[@jimnasium1957]

Bravo Rob, well done!

[@bigtperk]

You need a couple of steering couplers from a wildcat X. They are flexible and can be mounted however you want.

[@landontoaster3818]

Rob “There are so many people in the rotary community that want to help out.” It’s probably because they all now the pain of maintaining a rotary

[@mrpistonrecaro6483]

Landonius that’s why I sold mine. But I’d like to get a 2010 rx8 with recaros. I’m more mature now lol. Probably I can take care of it

[@mayhemarmwrestling]

Hope you are going to start doing those daily vlogs. Drives me crazy having to wait to see what's happening with the car.

[@nicholashelberg5323]

Bro, I’m so glad I started following your page. Your constantly problem solving and coming up with new ideas! And more than willing to listen to other people’s wisdom. It’s so inspiring!! Plus the wankel is the only way! Can’t wait for the next video! P.S I also like that you still find time to make it to the gym💪💪😁

[@DatWhiteboyAdubb]

So ready to see it do a pass, Hope the rest of the build goes smooth!