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Twin Turbo V8 Exocet - Luke

🔺Exomotive Exocet with a twin turbo V8 🔺Hypercar speed. Huge aero. 🔺Lots of carbon fiber. 🔺800kg // 1000hp+ 🏁 Post notifications 🔛 for technical posts

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A piece in the RENNtech Motorsports puzzle. Learning tons on this journey, but excited to be a part of an IMSA/FIA team! _ Lots of stress and hours clocked in, but this is what I’ve wanted for a while. Excited for where @RENNtech_Motorsports will end up! _ Stay updated on that page for more GT4 updates. More to follow! _ In other news, the Miata met a wall at the track. No worries, as plans are well underway for a heart transplant. More news to follow! _ @800RS @RENNtech @RENNtech_Motorsports _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Mercedes #RENNtech #RENNtechClassics #Mercedes #MercedesBenz at Palm Beach International Raceway

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Hi all! Alright, I’ve been getting a ton of messages about 800’s progress. Since moving to Florida (car is still in LA), I’ve been spending my time settling in here and working lots. _ The storage situation for 800RS isn’t clear yet. So until I can find a place to store it and work on it, the project is kinda at a standstill. This kills me and I absolutely plan on finishing it, I just have to figure out the logistics of storage. It being bare steel and non-operational is the main problem. _ Technical posts will continue as normal though! _ In the meantime, I bought a ‘95 Miata. It’ll keep me busy and hopefully provide some new content for this page as well. It’ll be easy to store and work on, as well as playing with setup. _ It’ll start with the basic track stuff and getting it to fee exactly how I like, but it’ll obviously get a fully mental aero treatment with some power down the road 😈 _ Anyway, that’s the update for now. Work has consumed most of my time, so I’ll try to continue the educational aspect of this page. Thanks for the patience! And as always, stay curious! _ @800RS @RENNtech _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Mercedes #RENNtech #RENNtechClassics #Mercedes #MercedesBenz at RENNtech

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NEW AERO WALKAROUND OF THE CLK GTR! This is about half of the whole walkaround, so check it out in my page for all the details! _ Check out my Story or Highlights for some good ol’ aero talk. It gets technical and explains a bunch of the prominent aero features of the unicorn itself! _ I’m liking these stories. Anyway, thanks for voting in my Story polls! Keep it up, as I love to hear about what you guys are and aren’t interested in. _ Stay curious! _ @800RS @RENNtech _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #RENNtech #Mercedes #CLKGTR #CLK #GTR at Jupiter Island, Florida

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Check out my story for new technical aero information about this RS Spyder! I’m going to try out something new in my stories occasionally. _ I like the idea of using stories. They’re really casual and easy to post an will be really easily accessed on my page in the highlights. Here, I did a quick walkthrough of some of the aerodynamic features of this LMP2 Porsche! _ The style is going to vary from time to time. Let me know whether you’d like these posts to be really technical or something a bit easier to digest for someone who is just running across my page. _ I also posted it to my highlights if you miss my story! So you’ll always be able to access this walk around. _ Again, comment and let me know what you think! Stay curious. _ @800RS @RENNtech _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Mercedes #RENNtech #RENNtechClassics #Porsche #RSSpyder #carsandcoffee #carsamdcoffeepalmbeach at Cars & Coffee Palm Beach

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TECHNICAL POST ALERT! Tag a friend who would find this interesting! I’m going to be the first one to explain the new Zenvo’s rear wing! I think I’m beating Kyle (@kyleengineers) and Jason (@engineeringexplained) to this one. A special thank you to @brookestreidler for tagging me in this earlier! _ To cover the basics quickly, this rear wing moves with steering input. The change in AoA is pretty straightforward. It increases when you’re cornering. As for the tilting, it moves against the direction or steering, which initially sounds counterintuitive, but it’s not. _ If you think it’s to stabilize the wing in air as the car corners and rolls, no. There is too much movement for such a stiff car. Also, thinking through a car leaning, tilting the wing this way actually makes that issue worse (think about a right turn; the car rolls toward the driver’s side, and so does the wing here). _ Here’s the correct answer: side force and aerodynamic anti-roll. Let’s think about it. A wing produces one force, which has a magnitude and direction. We often break it up into two vectors, though: downforce and drag. In reality, the wing produces one force vector that is normal to the wing’s bottom surface at every point (but we can assume it’s one big vector coming from the center of the wing for ease of explanation). _ With no tilting, the force vector points down and back, but in the same plane as the centerline of the car. No force components left or right. As you turn right, that wing tilts (higher on the passenger side, lower on driver’s side), which changes the direction of the force vector. Remember that it points normal to the wing’s bottom surface. So now the force vector is pointing down, back, and toward the passenger’s side of the car, which is on the inside of the turn. The force vector now produces a “side force” as well, which points to the inside of the turn. This both pushes the car in the right direction (to the right) and also pushes down on the passenger side of the car, producing an anti-roll effect. _ We have seen other forms of aerodynamic anti-roll before in things like the McLaren P1’s fear wing and Andrew Brilliant’s Infinity front splitter extension things at RENNtech

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Absolutely incredible photo. I’ve seen a 5 foot wide print of this photo by @brookestreidler and it’s absolutely insane. I watched him edit this and play around with 700+ layers. How could this possibly be 700 layers, right? That’s the beauty of it. Seeing his work has set my standards for automotive photography unrealistically high. _ A real car guy and excellent photographer, Brookes has an amazing career ahead. I can’t promise he’ll accept your car to shoot (and he almost certainly won’t do it for free), but if you like your car enough to immortalize it in photo, keep him in mind. _ I’ve been waiting for him to post this photo (so I could as well) since I first saw it in person. Be sure to check him out if you’re tired of the average amateur photographers putting out work that makes you go “oh, hey, that looks really nice” and want to see more of the “holy shit...” pieces. He has a lot more work available on his website and coming in the future to check out. _ As always, stay curious! _ @brookestreidler @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Mercedes #RENNtech #RENNtechClassics at Los Angeles, California

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Here’s a little look into RENNtech’s kits for the AMG GTs. Subtle and clean, yet it adds a sharpness and aggression that looks amazing on the already-handsome car. AND, modifications here are backed by CFD data to look at drag and downforce numbers. Real engineering for some serious cars. _ To go along with this clean look and make the car even more serious, we can tune your GT up to 761hp and 632lb*ft. This gives the GT some 720S, Turbo S, and Huracan Performante-crushing performance. _ I have to check my NDA, but just trust me when I tell you that some amazing stuff is locked away in RENNtech’s shop... stay tuned to see if I can share some of that with you guys. _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Mercedes #RENNtech #RENNtechClassics

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BIG LIFE UPDATE, guys. I’ve officially accepted a position as a Mechanical Engineer at RENNtech in Florida! _ I’m extremely excited at the opportunity in front of me and feel blessed to be able to start my career doing what I love and pursuing the very interest that made me choose engineering in the first place: cars. I’m slowly coming to the realization of how amazing this will be. The facilities, projects, and people I’ve seen so far at RENNtech are something special. _ I’ll be doing design work and I’ll be able to see almost every new part that comes out of RENNtech from design to manufacturing when I’m up and running there. I have A LOT to learn about the process, but I’m confident in what’s to come - it sounds like they’re heading in an exciting direction, especially with the amazing platforms that Mercedes is producing nowadays. _ I thought I’d be in LA forever, but I’ve somehow landed on the other coast. So, LA friends, if you ever find yourself in Florida, give me a call. As for any Floridians out there, I’ll be coming for ya... _ Stay curious. There’s always more to come. _ @800RS @RENNtech _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Mercedes #RENNtech #RENNtechClassics at RENNtech

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Tag a friend who might know something about engine/intake/exhaust design! I want to start an intelligent (and relevant) conversation about exhaust sounds. Proper science/engineering-based answers. _ I also want to begin this by barring all the generic/simplistic answers. No answers that compare flat plane cranks (FPCs) to cross-plane cranks or any simple “displacement vs redline” answers or any simple “rpm to Hz” conversion. _ So, with that said, take for example the Zonda (M120 engine) and, say, the Aston Martin V12. A Zonda shrieks at 7000rpm, when very few other motors do similarly (even at higher rotational speeds). _ I’m looking for any insights into intake design/tuning, header and exhaust design, interference of pressure waves between the actual exhaust pulses as well as the exhaust valves and combustion chamber, and anything else that might be notable. _ So let’s start a conversation: why does the Zonda’s Mercedes motor shriek the way it does when compared to another V12 of the same basic geometry? _ As always, stay curious. I’ll be learning from the responses as well! _ @800RS @KyleEngineers - Kyle @EngineeringExplained - Jason @F1Mike28 - Michael _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Pagani #Zonda #Huayra #AstonMartin

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Here’s a collection of photos from my travels abroad, from the Formula 1 race in Abu Dhabi to the Ferrari museums in Modena and Maranello. _ Here’s my opinion that you didn’t ask for about the 2017 F1 car’s noise. Mercedes sound the best... it’s the most intense sound. Ferrari sounds.. Ferrari-esque. My second favorite. Pretty distinct once you’ve heard them go around a few times. I thought the Renault and Honda motors sounded tame. But the Honda sounded almost muted 🤷🏻‍♂️ _ The sound level doesn’t necessitate ear plugs (like the GP3 and GP2 races did... my god those were loud) but the race start was something to behold. If you enjoy racing, I highly recommend getting to a race. You can watch about 10 separate events in just a couple days and never get bored of watching (and feeling) a GP2 car rip by. _ The Ferrari, Porsche, and BMW museums/factories were all great. They each had something amazing to show from their long histories. I tried to visit Pagani but their factory tours were sold out until 2018 👎 _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #photooftheday #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #hypercar #Ferrari #McLaren #Porsche #BMW #917

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*SWIPE LEFT (SOUND ON) FOR THE INSANE SOUND THIS THING MAKES* _ The Apollo Intensa Emozione might take the position for “the one car I’d take over anything” away from the Zonda Revolucion (possibly Valkyrie if more footage of it would be released) in my book. _ I mean... come on! I’ve never seen a car that made me honestly think “Huh... looks kinda tame” about a Zonda R. And if you swiped left for the video... that sound... I need not say anything. _ Specs (just spurting out info) are a 6.3L V12, ~780hp/561ft*lbs, 2755lbs, 9000rpm redline. _ Insane. Insane looks. Insane sound. Probably insane performance. Insane interior. This ought to make things pretty easy on the Apollo marketing team. Absolutely cannot wait to see one in the flesh and on the road. _ @800RS @Apollo_Automobil _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #speed #racing #supercar #exotic #exoticcars #carsofinstagram #carbonfiber #turbo #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #Apollo #ApolloIE #IntensaEmozione #ApolloIntensaEmozione #hypercar

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What a legendary car, now bruised up at no fault of the owner. A public service vehicle came through a blind corner, crossing into the oncoming lane and forced this car off the road. It’s gutting to see the consequences of the service vehicle’s driving on Frank’s Lotus. _ It’s painful to see the car like this; I had the fortune of seeing the car in person and talking to Frank (@roninrs211) about every iteration of the build... we went through hundreds of photos of the car at every stage of the build. Seeing the photos of Frank, covered in dust from sanding the body down to this perfect shape, flipping the camera off was funny, but now makes me sad to see the car in this condition. _ Whatever happens to the car, Frank, I’m glad you enjoyed it for the years that you did. And thanks for sharing the story with me, months and months ago. _ @RoninRS211 @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #carbonfiber #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #Lotus #211 #Exige #Elise #RoninRS211

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This is one of my favorite (if not my favorite) cars from SEMA. A 1994, 1996, and 1997 Pikes Peak winner and record holder on the mountain’s dirt roads. _ My favorite part was just how sound the aero was. It does everything right like sealing ducting, has proper leading edges, and has proper exits for vents (see how the hood has a raised lip ahead of the center vent and the front heat exchanger vents below the front dive plane in a relatively low pressure zone to help extraction). It also vents the wheel arches well and has good allowances for air to flow and expand around the front. The only thing is that they used some large square tubing for lower A arms in the front, where flow should be controlled. They used nicer tubing in the rear and for the upper front A arms, but the lower ones were left square 🤷🏻‍♂️ _ You can’t really see in the photos, but the diffuser starts REALLY early... like... under the driver’s seat. The car just does aero really well and I’m sure that helped it win races. Awesome car from SEMA 2017! _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #carbonfiber #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #SEMA #SEMAShow #SEMA2017 #PPIHC #PikesPeak at The SEMA Show

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Here are some photos of the SCURA Motorsport WTAC Lotus entry! Watch for it in the Pro Am class. _ This car is a great example of a trend with five planes in the past couple of years. As these downforce-centric cars have gone through different iterations of aero packages, the trend of high and (relatively) far-back dive planes has emerged. They are commonly placed near the front and top of the wheel arch in the extreme cars. _ They are not only bigger, but also run at lower angles of attack than their smaller cousins, which are usually mounted on the front bumper, near where the ends of a splitter might land. _ This is all happening for a couple reasons: interactions between pressure fields and aspect ratio. On a fundamental level, downforce is created by pressure differences. The low pressure field created under a small/low dive plane will interact with the high pressure field that is created above a front splitter. This makes both devices less effective. It can still shift the COP of the aero package forward, but each device in itself is being compromised by the other. When these newer dive planes are mounted higher and more rearward, the low pressure zone of the dive plane no longer interacts with the splitter. So each device is driven harder and becomes more efficient in producing downforce. _ The lower/smaller dive planes are also usually set at crazy angles of attack as well. This is because the turbulent vortices at the edges of the dive planes promote the attachment of flow along a large portion of the device, since they are so short compared to their chord length (low aspect ratio). These larger dive planes become more like wings as they grow larger and cannot be pushed to the same AOAs that the smaller ones can. _ I'm pumped for WTAC. Can't wait to see all the cars run! _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #carbonfiber #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #WTAC2017

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Who's ready for WTAC?? I know I am. Here's one car that looks like it'll be an awesome competitor, the @kiugarage S13! _ Interesting that they publicly give downforce figures.. they say 1480kg (~3250lbf) of downforce, but don't specify at what speed. I'd be curious to know! Also, I'd love to chat about the chassis and suspension design sometime, @kiugarage, if you've got some time (DM me)! _ Anyway, more car porn coming later. WTAC looks to be an awesome grid this year! _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #carbonfiber #turbo #twinturbo #F1 #themoreyouknow #Formula1 #WTAC #WTAC2017

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What an incredible journey it was! Meeting and spending time with these nine other incredible and like-minded guys was an amazing experience at the Infiniti Engineering Academy. After some reflection, I have a much better idea of what I need to learn next to make it to higher tiers of engineering. Time to grind now and keep on pushing! _ Congrats to @esloan13 for winning the competition! It'll be a life-changing experience, bud. So enjoy it and keep us all updated! _ Check out @InfinitiMSport on Twitter and Facebook for a video recap (hopefully soon) as well as pictures of the event! _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #carbonfiber #turbo #twinturbo #F1 #themoreyouknow #Formula1 #RenaultSportF1 #InfinitiEngineeringAcademy

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On Tuesday, I'll be going out to prove that I'm one of the best young automotive engineers in the country. I'll be flying to Seattle to compete for a spot in Formula 1 as an engineer. _ I am competing in the INFINITI Engineering Academy as one of 10 finalists for the chance to work for Renault Sport Formula 1 and Infiniti in the U.K. Working as a Formula 1 engineer is what I've dreamt of and now I'll go fight for it. _ Here's some background on the competition: 12,020 people applied from 41 countries, split into 7 regions this year - the largest pool they've ever had. From each of the 7 regions, 10 finalists are chosen. We compete for 2 days, and one winner is chosen in each region. The winner gets a 6 month placement with the Renault Sport Formula 1 team and a 6 month placement with Infiniti. _ Wish me luck - I'll be needing any and every bit of encouragement, knowledge, and improvisation to win! _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #carbonfiber #turbo #twinturbo #F1 #themoreyouknow #Formula1

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Ever wondered when you'd ever use trigonometry? Well, read below and I'll make a strange connection for you. So, let's talk suspension. _ Call the distance between the outer-most point on a control arm (when it is level with the ground) and the center of the car "x". When traveling in its arc, "x" changes as a function of the angle the control arm makes relative to the ground. This is applied to lower and upper wishbones on both sides. The higher the angle (higher roll center), the more severe the difference is. _ **TRIGONOMETRY APPLICATION ALERT** When I said that "x" is a function of the angle of the control arm, that function is the cosine function. Actually, you can control camber gain through angles (or length) of the control arms. So, given a certain displacement (hitting a bump or cornering), the higher-angled control arm's "x" will shorten more than the lower-angled control arm's. If the upper arm is more angled, this will net a certain amount of negative camber gain, given the same lengths. So, boom. Trig, applied. Tell them you heard it on @800RS' page first 😉 _ With the noise (talking about bumps and frequency of compression/rebound of the suspension) at such a high amplitude, this changing wheelbase puts a large strain on the tires. This was a large consideration with F1 front suspensions and different theories when deciding between pullrods and pushrods. Pushrods allow the suspensions arms to mount lower, with less angle. Pullrods necessitate higher control arm mounting points in general, and consequently a larger angle. And with the high lateral stress put on the tires, higher angles degrade the tires more rapidly. _ It should be noted that some teams are moving their suspension points up on both the chassis as well as the upright (I call it a "spindle", personally) in order for it to work best with their front wing package. But the concept remains the same; level off those control arms. _ @800RS _ #Exocet #800RS #V8 #Miata #MX5 #carporn #becauseracecar #hoonigan #engineering #racecar #carbonfiber #turbo #twinturbo #F1 #themoreyouknow #Formula1 #RedBull

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