Making the AWD 4 Rotor RX-7 brutally fast by Hacking Corvette Wheel Hubs

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[@ineedmymodfixed]

You're going all out, going way crazier on this car than any of us expected. This thing is so technologically advanced it's gonna be nuts.

[@floridamangonwild]

how is this comment 2 days old even though the video is 35 minutes old

[@brandonmeens]

@@floridamangonwild Patreon or the KZbin equivalent

[@floridamangonwild]

@@brandonmeens thanks

[@randomdamian]

What the hell, the video says uploaded 23.05.2022 but today is 24.05 and your comment is 3 days old? wtf

[@maxhilton325]

@@randomdamian patreon/membership, he got to see the vid early

[@jackjones1687]

You know it’s getting serious when the steering wheel is now aligned😏. For real though, this car is a beast!!

[@wheresjerz]

he still needs a firewall and a tunnel to make sure his sweater aglet doesnt grab the drive shaft and rip his head off

[@HulluJanne]

I had this weird sensation that the wheel didn't have all the bolts on it.

[@thomasl.7700]

The old one triggerd me so hard! Great results!

[@Dangineering]

I can tell Rob worked in IT. It is such a refreshing take on building a car. Everything feels so logical

[@SaarlaneKretiin]

naaaaah bro. IT mfers are some of the least organized people LOL

[@alksdng97834y]

@@SaarlaneKretiin Rob started in IT and has owned his own IT company dude. If you complain about the IT people you are probably the problem

[@TylerSmithMusic1]

Definitely leveraging the use of technology

[@Metalozedex]

he still does, own an IT company.

[@SaarlaneKretiin]

@@alksdng97834y im making a compliment not complaining jeeez....

[@Ayane13b]

Rob, PLEASE make a tunnel for the driveshaft/transmission ASAP. I don't want to see my childhood hero get injured from something so easily preventable.

[@Matty.Hill_87]

I've been commenting this for ages, it needs to happen

[@benjie9449]

I love his creation. But honestly safety is important. Rob should make safety a priority. He doesn't seem to care.

[@benjie9449]

And he never wears a fire suit when ripping around the lot. Fires can happen anytime anywhere

[@tristanh4007]

Not to mention a firewall. Another drift KZbin persons corvette just caught on fire and had flames in the cabin

[@auraKittyyy]

@@tristanh4007 poor collette

[@formu1fan]

This car is incredible. The refinement and polishing is making this a top tier car. Having all the data with a full dash is sick

[@sturmifan]

now we just need a proper firewall and something to actually cover the transmission. love where this is going

[@kb9oak749]

Oddly enough, the term firewall is apropos when talking Rob Dahm. "Rob your car is literally, actually , on fire!" Rob: "Yeah, but did you see how fast it is?"

[@bennett_warkentin]

This!!! Please for your own safety rob. There was just a reminder of how fast and dangerous a fire can be recently as Colette Davis’ car caught on fire. It can happen to anyone. Stay safe

[@ja60123]

That elbow-unjoint intersection makes me nervous

[@aitoblitz]

@Jim jibroni we will see

[@sturmifan]

@Jim jibroni raceprep in last videos title.

[@AdamGreenwell]

The 4 rotor build is by far the best juxtaposition of learning, quality craftsmanship and going balls to the wall.

[@Vincent_Thatch]

I think you want "intersection". Juxtaposition is a combination of elements for comparison of contrast.

[@podulox]

@@Vincent_Thatch I like "Confluence" here... (+ *anything* is better than "best" IMHO!)

[@STimedic1]

I'm waiting for a legitimate firewall and wheel wells to be built. The chassis and body have been square for more than 2 months now. That being said, I AM loving the progress being made!

[@Cynical...]

Got to 14:00 minutes and was thinking "damn this looks awesome, shame the video will only last a few more minutes." Then I remembered this is a Rob Dahm video and there's half an hour more of amazing content I can enjoy :D

[@Patrick-zr8tv]

Did the same thing in my head. Was hard to get into his content at first because it's so long 👀 but now that I'm hooked it's fantastic having so much to watch.

[@dylanwatkins1019]

Please make a sheet metal transmission tunnel, so that driveshaft and or transmission doesn’t grenade and possibly kill you. I’m sure I’m not the only person that’s worried about that.

[@daveg5393]

NHRA dont require it because if transmission were to grenade sheet metal is not going stop it you would need 1/4 in armor steel like the nhra sert bell housing

[@Homme_Pur]

@@daveg5393 strill, it's waiting to eat some wires, or an elbow

[@loganthompson5961]

@@daveg5393 if the driveshaft is carbon fiber sheet metal should stop it since it should turn to “dust” so to speak instead of a metal battering ram

[@stagearc]

Kevlar in the tunnel

[@bengelman2600]

Fastest flintstone car Ive ever seen for real.

[@mooseman50039]

I think the most satisfying part of the video for me was finally seeing the switch panel actually get mounted. The stickers are just icing on the cake!

[@PureSharp]

watching this thing evolve over the years has been insane to see it so close is incredible

[@undergrnd20]

I remember when this whole project kicked off with UPS "losing" the engine... How time has flown

[@connoisseuroftigolbitts]

I wish rob had huge sponsors to help him finish this dream build of his like MAZDA themselves Rob was the first to gain popularity In the rotary youtube world

[@streamcyper]

I just want to say.... Thank you so much for the long videos... I love how an episode of the 4 rotor build is pretty close to a full TV episode, and some even getting to the length of a feature film... And I love all the little tidbits of information and such, seeing the cam-bus and the explanation for that, seeing how and learning how the speed sensor work, putting stickers on the button panel, driving around to and going though the logs. I just love watching, experiencing and learning all this craziness. I can't been there in the shop, but these videos at the very least let me feel like I'm there.

[@adrianwelgemoed9562]

Looking good rob, but please seal off your firewall and tunnel soon. Its really unnerving seeing that much spinning mass right by your arm, not to mention risk of fire

[@cestorm1]

For real, just look at Colette Davis’s drift corvette. That car is the perfect example of why a proper firewall with zero gaps is so important.

[@Shadow0fd3ath24]

Hes got parts being made! He replied it in another comment

[@adrianwelgemoed9562]

@@Shadow0fd3ath24 thank goodness

[@DanOBEY2]

Dopeness! 4 rotor is looking ready for Dahm vs Hoonicorn pt2

[@onlygaming2]

Watching a 50 minute video and not getting bored, that is how you make good content

[@sv-bk]

Finally no stock steering wheel! Paddle shifters really make this feel like a full racecar.

[@DaddyWarlocks]

Jumping in to say, Rob, that is a 30-60-90 triangle. It's sides all follow a ratio of 1-2-root 3, with the hypotenuse being twice the length of the short leg and the long leg being the length of the short leg times the square root of 3. So to find the distance the sensor needs to be from your tire, divide 6 by the square root of 3. Resuming play now.

[@AlteredCarbons]

also, i want to say this. i was never a hater of your content. i was a doubter tho for a long time, been watching for over 3 years and to watch and see the struggles you made to get to where you are has been a great watch and i appreciate all you've done for the car community

[@mr8610]

You guys are seriously building a car. Like, building an actual car. The amount of work you are putting into this is nothing less than an engineering team puts into a new sports car program. The sheer amount of work that goes into making everything work in harmony. Bravo.

[@Kenny-ty6ts]

Have you thought about taking the car to a wind tunnel to see what it would do at 200/300 mph would you have lift off or be stable Still hoping for a Salt Lake run and Pikes Peak with the 4 rotor 3 rotor and the C5 The thing about getting a pro driver for the 4 rotor that has driven pike’s Peak is he can help you with tire choices and the best suspension set up for that race and the salt flats run is finding tires rated for 300 mph plus If you run either of these races please post soon as you can so I can buy tickets/ plane tickets/ hotel Rob thanks for the update

[@RobDahm]

Pikes peak may be an endgame for this car. I wanted the salt flats to be but the chassis for that basically requires a whole new build. I can promise i will do both with a 4 rotor in the future. As much as i can do with this car first

[@savvymanX30]

Isaiah your skills make robs fantasies come true.. great fab work

[@XlSpumonilX]

Just a recommendation, a cheap single channel lab scope/oscilloscope with a set of good back probes are worth their weight in gold for voltage varying circuit analysis

[@pfendi]

Any recommendations? Been thinking about picking one up for little projects that the multimeter doesn’t really cut it for.

[@proactive_studio]

@@pfendi picoscope 2000 series should be right up your street for affordability and light beginner use. Used extensively in the diy automotive space.

[@LuxGamer16]

That last bit was really nice! So cool! And its really nice to see the car with proper interior. Well done guys. And thanks joel for the early video

[@eugenehall390]

For the front tire sensor place it near the top or bottom of the tire, like behind the top of the fender or just on top of the splitter and aim it straight(level with the ground) to the back of the car. It won't be 100% perfect but the top and bottom of the tire don't really change position very far and should be accurate enough for safe data results.

[@lucassanches3568]

at the trigonometry section, you needed to calculate the tangent; you had an angle of 60°, an opposite of 6', and needed to know your adjacent. We know tg60° = √3/1 = 6/X, so: √3x = 6 X = 6/√3 X ≈ 3.46 inches :)

[@Matty.Hill_87]

Yes.. 😐🤣

[@Yans_]

I think you should have 2 percentages for the front and rear use instead of an AWD percent bar because 100% AWD would mean 50% on the front and back so 2 different numbers would be easier to understand the front to rear split. The 4 rotor keeps evolving and so do you both with the build well done.

[@alexf5586]

Look at Acura's Hud for their SH-AWD. It gives you live power split per tire. It looks so cool

[@RobDahm]

You might be able to hear my hesitation becuase i was thinking that too. 100 percent implies FWD too. A split would be even cooler. For now its nice for me to see how hard the awd system is activating, ill keep cleaning it up especially with suggestions like this!

[@Yans_]

@@RobDahm Split per tire would be nice but more difficult I think. I know with time you will make this thing top notch in every aspect.

[@gi70st]

@@RobDahm you could do it with the vertical bar. if the top is front and the bottom is rear, 50% on the bar is an even split.

[@Yans_]

@@gi70st Yes but he will never have it FWD so he will not use half of the bar.

[@Nexville]

Rob Dahm videos are the few i dont skip trough even if they would be 3h long

[@madmodsgarage1179]

ECUmaster - founded, designed and made in Poland, hell yeah! Proud of them AF 🤘 🇵🇱 I'm also using their EMU Classic in many projects 👌

[@WIKD1LE]

I am actually in awe of how far this car has come. I didn’t even realize the dash would ever go back in. It made me realize just how good of a job you did with the wiring. I CANNOT wait to see more of this car!

[@Peter_Suhajda]

Little bit scary when i saw your elbow over that rotating driveshaft :D

[@alaska4229]

50 whole minutes of daddy Dahm? Sign me up

[@ItsBabaEro]

God I love all the crazy high tech stuff in this car. It's so insane that a small team like yours is able to put this insane racecar together.

[@ScottMikles]

Dude when you get out on the city street it was such a vibe. It's like, a mad scientist meeting with normal reality. You see all the normal vehicles and then there is this spectacle of a machine that only ever gets seen in a garage usually being meticulously worked over so when it makes a rare appearance on the city street it's an outright spectacle. The transmission sound, the shifts, the new cockpit. The enthusiast and artist in me loves this. Keep polishing, keep working, keep mastering.

[@prayan18]

rob just get a dahm floor on that trans tunnel, dont risk a random bolt flying towards you

[@allistervangeffen7995]

This is so sick. So stoked for you Rob! And seeing Isaih’s fab skills progress since he started on the channel is so inspiring.

[@chillierdavro]

Treat yourself to a "Tilton Standard Bias Dash Adjuster" The adjuster cable attaches to the end of the brake balance bar and allows the driver to adjust the brake bias even whilst competing.

[@RicouNiet]

Yeah, this is something I'd consider a must have in a car that's gonna see significant track time !

[@dongonzulman6478]

amazing...ive lost track of how long i've been following Rob's shenanigans, but this episode really felt like the 4 rotor is an Rx7 again! The interior bits were transformative, but the stuff near the end with the wheel data, AWD and brake tuning..just awe inspiring. Gives me chills!

[@charleskahles2062]

Watching the 4 rototor come back together from when it was in pieces is so satisfying!!! love your work!

[@BlueScreenGaming1]

The 101% AWD is all 4 wheels plus Rob's foot giving it a push. Fw though been watching since the rotary vet and this thing is absolutely amazing

[@-MaXuS-]

Oh god how I love these videos! I’m just so envious of Isaiah! 🤤 What I wouldn’t give to work with what y’all are working with. Just the constant learning, advancement and deepening of the tech and skill level of all that you’re doing is so so soo satisfying just to watch. So I can’t even imagine how amazing it must be to actually do. Well…maybe can and that’s why I’m a bit jealous but still. Really appreciate the content as usual!

[@RedBloodSandman999]

I just love how exiting Rob is in telling us what he and his team has done so far. And oh my gosh the dashboard and doorpanals are really adding much to the build. i just love seeing the updates of the AWD 4 Rotor

[@pachecodc5]

Every single part on this car is "takes it up a huge step, best available, don't make it better"

[@cjdavis247]

Idk what I liked more, you jumping the car taking a corner at 30mph or the nice little drift you did coming back into the shop. excited to see you get more time behind the wheel of this monster.

[@THEKITPLUG]

How over-engineered do you want it...?..... yes

[@markbrethauer3042]

Yes he needs a sensor to monitor his sensors 🤔🙈

[@4cyl]

The clam shell being cut and still fit so flush to help the dash visible is just satisfying i love this so much

[@criscolard1]

He needs to be RND for all major tuning platforms. His drive and curiosity would make products for the public better!

[@nathanzondlo7393]

R&D? Lol

[@criscolard1]

@@nathanzondlo7393 that too🤣

[@blaznmax8877]

Gosh dang this video just blew my mind and I've been watching for a while

[@limesta]

I don't know how the hell you can make a 51 minute video on a sensor And I still watch it. It's probably the hair.

[@BlueDually4x4]

I like how we go from tech to interior than back to tech and safety all while still leaving the driveline uncovered. Never change Rob. But seriously digging the more tech detailed videos like this, you keep a good balance between what something does and why you want to use it.

[@matheuswohl]

let me preface this comment by stating that I actually don't know what I'm talking about this time That wire tied to the brake line at 16:00 makes sense considering turning and suspension travel but isn't it also a concern regarding possible melting if the brakes/lines get hot enough from track use? (I've seen videos of hard lines going red hot from stuck brakes but don't know if that's a concern with ptfe/braided flexible lines)

[@RobDahm]

Oh shit i didnt think about that. either way that brake line will get very hot so your concern is super relevant. Ill either insulate or move it

[@aaronhall7740]

As long as there is something separating the line from the wiring it will be all good because if the air gap. Also good to keep separate so the braided line doesn't rub on the wiring.

[@MyNameIssaSimon]

I’m sure that the more Rob hacks oem sensors and tries to make his own systems the more respect he gains for oem’s and their systems. Amazing work!

[@khobaibzafar3601]

Early access video era back????

[@Norman_X_Seven]

I love that you're keeping it looking like a "stock" FD instead of a barebones racecar.

[@TyinAlaska]

I hope you flock that dash or make a mold and create one from another material or just do something sexy with it. Edit: Rob, have you seen the leather covers that are made for the fd3s dash? They are really cool because you can get colored stitching which could match the seats or your overall interior color choice.

[@K-roll]

25:25 the resin comes off easily because the surface of the sleeve should be scuffed with sandpaper prior installation. Aviation uses same type of wiring system and unscuffed surface of the sleeve is a common cause of the resin separating which makes the moisture ingress possible. I very much admire your work guys though - keep it up! 😀

[@NathanThrower]

You really need a 3D printer. It’ll free up your welder.

[@veldonreeves1321]

Soooo cool to see the car get it’s interior back and not to mention all the new sensors been watching for years the car has truly come so far

[@robertrose1098]

Epic automobile my friend !!!! The fabrication and characterization of this particular vehicle has led me to apply pressure to the subscription button along with the all notification bell , Seen 4 WD , 4 Rotar RX7 and had to take a look, I'm not disappointed at all , And watching your content was incredibly insightful and injoyable. This is the future, I'm 48 years old and love all the people who are pushing the limits of technology. You my friend are a genius obviously. I injoyed watching and learning about everything you covered in this video. Now I have to catch up with all I have missed at the same time as looking forward to your next video. GOD bless you and your loved ones... From me way down under here in New Zealand 🤪👍

[@elijahvigneault7579]

This guy is insanely smart and undoubtedly changing the game with the amount of time and technology he puts in

[@igormortis9755]

The level of refinement is just astounding. As is the fact you are basically self taught. Respect, sir.

[@kevinhird8161]

Been watching this build from the start and you're killing it! I can't wait to see this thing 110% percent dialed in, ots gonna be such a monster! Keep kickin ass Rob!

[@somewhatofaprofessional7940]

What's even more mind blowing in this whole wheel speed thing you got going now, is this is literally how ABS works. The only thing missing from your setup is the valve block to modulate each corner of the car and a pump (ABS valve block). This is literally the exact signals (individual wheel speed at highspeed, CAN signal resolution) your ABS module is looking at when doing an ABS stop. It's fucking awesome that you are able to implement this setup with an actual ABS specific module and basically achieve the desired outcome just by tuning the proportioning of the front and rear brake force. Side note: Every video of yours that I start watching and the first few scenes is you all giddy and opening boxes, I know I'm in for a treat. I know you have a VERY large following and have your feet in a bunch of different projects outside of the 3 and 4 rotor, and vette, but I still think you don't get the credit you deserve by essentially doing this all on your own (Joel and Isaiah, included in the "on your own" statement. Obviously). Small team making big moves. Love your shit, buddy. Keep up that good shit 👌

[@adriandelgado8709]

It’s really an amazing moment to just realize how much this man has learned working on this crazy car, and I’m really proud and happy for you man, keep ‘em coming, the world ain’t ready yet for that beast of a car

[@von...]

seeing you get more comfortable with hooning the 4-Rotor around excites tf out of me for the upcoming vids

[@lithium1135]

Your team is bringing some really awesome stuff to the table, this is one in the world kind of builds. Remember to thank Joel too, We wouldn’t be able to see it without him!

[@Golds_442]

It was at 24:40 when I realized Rob is just Doc Brown building a time machine

[@christianciccarello1873]

I used to work for a v8 supercars team a few years back and I believe the tpm sensors they used were a beru f1 irtpms. A super cool bit of kit it was secured to the inside of the wheel by the valve stem and sent live data to the ecu

[@playstation8779]

Seeing it on paper is one thing but actually examining it via reverse engineering is what puts it in perspective. Need more teachers like Rob

[@infidel__sniper]

23:30 Look at Isaiah doing arts and crafts 😂

[@Dxrnit420]

you are, hands down, probably one of the most educated car content creators on the platform.

[@turtledovew2150]

Love that ending! The car has come SUCH a long way it’s amazing to see where you’re going with the 4 rotor

[@hilandhsc]

Well Rob and Isaha let me just first say "I love your channel and cars". Ive literally watched you go from a basic mechanic to a all around genius in some areas. ;) Now Ken Blocks Stang will always be a work of art, but now the 4 rotor is on the same level and will eventually exceed it. I truly believe that and it has just been a true pleasure watching it develope throughout the years I've been watching. So I just want to thank you both for the things I've learned from y'all and all the amazing content you guys produce, and I'm really looking forward to the next yrs ahead.

[@802Garage]

Rob, as always, absolutely love your enthusiasm and excitement. Back to basics for a second though, the reason they call it a differential is because it allows for a difference in speed between the two wheels on that axle. Hence why RWD cars need a rear differential and why welded diffs suck for daily driving. Just busting your balls of course. I also come from a tech and programming background and it often feels like you're doing exactly what I would want to do. Everything you're creating is beyond awesome and I'm envious!

[@EchoMoth-b3s]

I always have an opinion on KZbin builds, but your builds, leave me speechless.

[@brendonbell8720]

Been following this guy for a decade , finally the car is become more closer and closer to perfection

[@LS2FD]

Next step in fine tuning suspension/alignment should be 3 temp sensors per tire, inner, middle and outer. Will really help you get the most out of everything. Nevermind. Should have watched without kids in the background! That is a wild setup!

[@davidmayes6960]

I feel like i'm watching the creation of the 6 million dollar man! Absolutely , one of the wildest builds i've ever watched!!

[@oscardeltoro898]

Having the ability to see your AWD % is amazing, this data x tire temp means no more traction wonders. Seeing a clean hand brake pull and all systems cooperating is a pleasuring feeling!

[@midbc1midbc199]

Rob you and Isaiah need to do a compilation of all your joining and racing.......I never get enough of the 4 rotor running

[@poorfellamycountry]

I never get tired of watching this evolution of application. From builder too tweeker.

[@mk3_jcb229]

Couldn’t ask for better timing, just cracked open a nice cold beer! Cheers Rob!🍻

[@probioticx2201]

You always nerd out and go in depth explaining why and how the product you chose works.. Amazing stuff.

[@marcelom17]

The gear changes now are crisp, even not pushing. damn!! Loving the evolution!

[@PaulCammarata84]

I like how at the end he hauled it back into the garage. I think we've all been there, that block was hot!

[@catalickconverta6823]

Been following this build since day 1 and never thought it would get this far this is the best car on the planet sounds like a formula 1 rally car

[@Fred696f]

I think the Carbon gauge pod is gonna be a problem with glare and reflections. Spray a satin clear on it, so there isnt gonna be so many reflections, reflecting in your eye. Plus i think it will look way better and match the dashboard way better.

[@teammacucaracing9015]

Probably the only youtube channel i see complete videos of.. crazy build

[@SoobDoob18]

Rob you’re insane man. Your intelligence blows my mind and how much you understand how things work in depth

[@ax75f92]

Rob if you still are messing with getting the fuel level sensor to read correctly; I went through the same process with my FD running a fuel cell with ATL float sensor sending data to an AIM dash. The sensor requires a pull-up resistor to make it operate 0-5V. There’s a company called Iron Canyon Motorsports that makes a small box you can plug in to the system to solve your issue quick and easy. Cheers brother!

[@BESTNOODLEREVIEWS]

Wow, practically another movie 🍿. I'm saving this one for before I go to bed. 👌🏼 Thanks for the content.

[@jonathanallen9205]

Just woke up and seen this dropped 6 minutes ago. Great beginning to my day.

[@nickwest9075]

This whole project is a huge inspiration the more you work on it. Can’t wait to see it finished in person

[@danzgoogle845]

That handbrake grab at the end Rob gave me goosebumps that must have felt great :D Love watching your passion.

[@Babyhulk24]

This car is no longer a race car but a super car now with all these technologies being put into it, it's amazing the hard work and research your putting into it plus all the safety features. Talking about safety features can't wait to see the bottom floor all sealed up where your arm is so close to that drive shaft. Keep up the good work always looking forward to another great video 👍😎

[@MaxYield]

Next level incoming! "We're not getting high on hypotenuse here"....you coulda fooled me! Awesome as always!

[@aaron_r6611]

Love a bit of trig, I have to do that all the time to work out the right countersinking depth 18:30

[@sgt_taco]

omg an actual steeing wheel and its the right way around

[@SMITESHSURESH]

That dash alone makes the interior look so much more put together!

[@Sparky_D]

I've absolutely loved watching this beast come to fruition over the years. Just awesome