The Worst Kept Diffuser Secret in Formula One.

[@KYLEENGINEERS]

Hey guys, hope you enjoy the video! A side note that my aero course is currently on sale for Black Friday if you want to get in on that action: courses.jkfaero.com/courses/race-car-aerodynamics-the-definitive-course Worth noting too that that inboard bulge on the diffuser top surface on the 3D model is larger than I would've expected just to cover a gutter - perhaps they were running a stay or a pressure tap here too?

[@harryainsworth4321]

Hi Kyle. Great channel. I've been subscribed for about 2 years. I noticed you only analyse the f1 cars after the launches. Could you do other videos throughout the season and give your take on the upgrades?

[@mattminde1747]

Hoping to see your analysis of the 2024 cars that have been launched. I'm sure you are busy as race season never really ends.

[@manuelmanterola7070]

"Or you have a little bit of a mishap like Williams did and accidentaly release the 3D geometry of your car online"

[@martin_in_the_alps]

Nice, has anyone a download link?

[@bigbuckoramma]

I beleive they had some kind of interactive app for the launch of the car, and the 3D model used in the app, was litereally pulled right from their CAD files, with hardly any reduction in quality. As you can see from Kyles 3D model, even all of the hub and brake internals are modeled inside the wheel. It was an obnoxiously detailed 3D model for what its intended purpose was for.

[@Jon-cw8bb]

​@@bigbuckorammait was just the livery launch as well 😂

[@KayJblue]

That line was like a sucker punch 😂

[@gix10000]

@AZ-zn9lgironic

[@flexygoo1295]

Do a breakdown of the stache

[@StudioVRM]

Your mustache surprised me more than the reveal of the diffuser secret.

[@fernandezadrian6357]

Loved this video! I love small quirky rule interpretations like these. Could you make a video about the 2026 aero regs? they might not be enough info about the actual design of the cars but the inwashing winglets and concept seems interesting, kinda goes against what you want and it does make me question what teams will do if they inwash the front tire wake, id love to hear your thoughts about it!

[@stephensegal5187]

In a design I did for SCCA D Sports Racer here in America, I used variable front wingless to control the volume of air feeding the tunnels. The idea worked on being able to vary the winglets during practice manually operated to determine the best fixed adjustment (as per the rules) for the actual race at any given track or condition. Kind of like how a throttle cable actuates a slide in a carburetor in relation to the carbs venturi. Simple and effective. I was doing that back in 2005. It works.

[@absurdist5134]

I'm a layman, but have followed F1 since the mid 90's. You're showing me stuff I'm deeply interested in, but in a way that I can easily understand, at least conceptually. I really, really appreciate that. Fantastic video.

[@natedole8276]

I completely agree with this. One of the reasons I subscribed to this channel.

[@fam.hunger5244]

Actually this idea was first used by Rory Byrne on the Ferrari F2002, where he did put a step in the transition between the diffuser and the flat floor. Another of Rory Byrnes many ideas and concepts copied by others untill today, just applied best to that set of regulations. But the idea of pushing that even further was very clever!

[@nikenitunga3519]

i can't wait for the 24 cars i hope you make videos about them love your insight on them.

[@ImInLoveWithBulla]

I would love to see a video on your idea of an ideal formula car. Keep the same wheelbase or thereabouts, but have aero freedom. Would it be a more simple shape like the 1980s, or would it have the various flips and flops and flizzles. If it wasn’t for the limitations, would they have a much smoother shape?

[@theonlylolking]

Based off Gran Turismo's and iRacing's theoretical open wheel racecars that it would be smooth.

[@captaintoyota3171]

Yeah you realize how hard thatd be? It takes 100s of Kyles to engineer a car from scratch, even just aero. Its not as ez as saying "best f1 car". You need constraints rules to push engineers to find innovation. If u gave kyle blank sheet of ppr w/o regs where does he start? Also just so complex and cfd running needed u just cant afford it

[@ImInLoveWithBulla]

@@captaintoyota3171 but would it be so hard? The main issue is finding ways to circumnavigate the rules that are put in place to slow down the cars. I’m not saying he would create the perfect car. But I’m sure he could have a ballpark idea that’s 80% there.

[@leoa4c]

If the limitations were purely dimensional, we would see jet engines for propulsion and downforce suction. There would be more than 4 for wheels, perhaps even a tracked vehicle. Furthermore, a lot of sporting regulations would have to be in place, otherwise we would see "cars" with chemical thrusters for higher deceleration and cornering speeds which, in the end, no human being would be able to tolerate.

[@micahvdw962]

​@@captaintoyota3171it wouldn't be so bad if you were to make it sort of like a 919 evo type of challenge where you take whatever set of regulations he thinks is best and throws the constraints out the window to take them to their ceiling

[@autdelux]

best tech channel when it comes to f1 aero thanks mate you are a blessing

[@AyaxRo]

Thank you! You have a way of explaining what is effectively high tier motorsports aerodynamics in a way in which anyone who is even just slightly interested in aero can clearly understand and visualize. Thanks for keeping the channel going strong all these years.

[@prongATO]

I have a theory on McLaren, I think they pulled a bit of a Tracing Point; I postulate they copied RB’s floor from last season and are just now learning how it works. I know it’s not really relevant to the video but watching this video, it crossed my mind.

[@Runoratsu]

Afaik there are rules against that-you can recreate stuff from photos and so on, but you must have documentation on the whole development process, since copying using electronic aids (like e.g. photogrammetry) is not allowed. So they’d only have been able to get inspired by it, and then base their own designs on said inspiration, but you _can’t_ straight up copy something, every design element must have reasoning behind it.

[@georgedreisch2662]

I’m surprised that a coordinate system of of water lines, butt lines, and stations, referenced from a datum, similar to employed in aircraft design, isn’t utilized, to define the dimensions of the aero systems, in a standardized manner. Very enlightening presentation. Thanks for sharing.

[@tobywonkinoby8916]

I love this type of video. Thanks for taking the time to make these!

[@AndyRRR0791]

The gutter on the Ferrari example appears to be vented out to the sides somehow. I wonder if that yields a secondary benefit of allowing the boundary layer to reform at the edge of the gutter that helps tolerate a steeper gradient for the diffuser.

[@MrTweaksTV]

wow how did i miss this one!! so many questions from the past, now answered

[@jozsefizsak]

Very interesting! It's always nice to have a video from you..

[@madmage2676]

Very nice graphics. Well done. Makes this complex topic easy to understand.

[@jbc21182]

Will there be new f1 cars aero videos this year?🤞

[@RStandsForRace]

Saw you in a WTAC video working on Feras' car. Was pretty cool.

[@GreatistheWorld]

There’s no way there aren’t way more ‘worst kept aero secrets’ in 2022-23 F1 cars right? Would love to see more videos about overlooked features & details

[@san-joshuabarrett]

Love the mustache. I've been trying to get mine that good looking

[@JessSimpson1313]

This is such an awesome video. Really dig learning why some of the cool little tweaks teams ran existed.

[@Francesco93488]

Your videos are a rare gem!

[@rugglettes7517]

Thanks for the video! It has been a long time. I already can’t wait for launch season 2024 and your analyses

[@homestyle2000]

next video Aerodynamics of an epic mustache!

[@stevesloan6775]

I’ve seen top fuel drag cars use that gutter aerodynamic factor in inlet ports. They could make running streams, run down the port and over the ports valve seat and into the combustion chamber.

[@bmc3663]

A great example of the old adage that there’s nothing new in F1. Williams (and no doubt others) had a similar feature in the early 2000’s as a work around for a very similar rule.

[@Ginbaubabe]

Is it the new lighting that made Kyle looking much paler than before? Hope everything’s fine n take care mate

[@theonlylolking]

Summer has ended

[@toddxhiggins]

​@@theonlylolkinghe's in aus. Summer is just starting

[@uninsulatedshrimp5518]

true, he looks really tired and run down

[@nandilemsweli6943]

Finally! Been waiting for a new video

[@drakemayer9197]

Great video! You explained everything very well

[@dongurudebro4579]

Really hope you are doing rewies on the new cars as always! :)

[@olivialambert4124]

I've wondered this for years now. Is attempting to use a forward kick line and some F1 specific rules the reason F1 will usually use a forward expansion diffuser? Or are there other benefits beyond just moving the kick line forwards? Ones you can actually speak of, of course. Would it translate to other non-F1 aero packages well?

[@ananayjoshi]

Should work ideally, but better results at lower ride heights. Turbulent flows in the diffuser will also aid in better attachement

[@maxrothery9196]

Is there anything in the rules that say you can’t have multiple radii in the “floor edge” box? So you could turn the floor up and the turn it back towards horizontal to make a long, shallow diffuser prior to the “diffuser” box.

[@gaaalileu]

Shame on you, KZbin algorithm! Why did you hide this channel from me for all this time?!

[@miendust]

Hey Kyle, can you make a video where you explain how you design Wings, winglets and the transitions surrounding them? Also an other question: Why do you use the splines with pullingdirection points and not the ones, where the spline runs through your point?

[@0xkudz4i]

Love the stache.

[@johnspalding7087]

Suggestions/request for a future video: Why don't the current F1 cars appear to lose any performance when they lose their front wind endplates?

[@russrose6783]

hello, I really enjoy your videos, I am curious if the CFD runs are set up with "rotating" tires ? thanks !

[@Kyleember]

I would like a video on the little wing Aston put under the rear jack point

[@bishopdredd5349]

Excellent video, this reminds me that you were contemplating doing a video about the Fan of the Gordon Murray T.50. Seems to tie in with this video a little bit. Are you still planning to do this?

[@loud_v8_noises]

I appreciate the explanation here but while this interesting subject in a very nuanced way I can’t help but think this is ultimately a bad look for the sport if the performance differentiators between the guys at the top and bottom are things like a 10mm step in the floor. I really wish the future regulations would allow more technical freedom since we now have cost cap controls and basically what will amount to a spec engine format in 2026. It seems like the tighter and tighter they write the rules the more you need a phd in aerodynamics to understand why the Redbull is winning every race.

[@leoa4c]

I would speculate that this is, perhaps, one of the cases where CAD rises above traditional methods of design (pencils and drawing boards). At least, from your great demonstration, it's easy to see that, just by playing with a single variable (in this case the max radius) one could arrive at a geometry like the "gutter". I am no saying that traditional design methods do not allow for such realizations, but it appears to me, at least, that drawing something in CAD does allow for a better visualization of the limitations imposed by the regulations, especially in regards to highly complex areas where multiple reg articles coincide.

[@whatev888]

Do you think you could have a place where people could ask questions about the aero stuff you do? because I have so many questions and I would love some answers!

[@tonygonzalez9333]

I'd love a video about the wec cars

[@josephsobalbarro3365]

Patiently waiting for the 2024 breakdowns like 😇

[@JessSimpson1313]

It would be great to hear why all the teams changed the upper section of the tail end of the 2023 cars all started having a very narrow tail resulting in the very straight line heading to the rear wing versus 2022 where they sculpted a smooth transition. I havent seen any explanation for this change and all teams seemed to have made the similar change.

[@cam3002]

Interesting video, thanks for sharing. Can you share insights as to why Mercedes seem to have struggled so much these past two sessions. The no-pod experiment caused so much porpoising and seem to have much higher drag than their primary competition.

[@turbo_brian]

I think it would have been good if you explained it a little more in the beginning. I wasn't sure if this was a feature on pre 2022 cars or post 2022 cars. Seems like it's used on both pre and post, but just saying when it was introduced roughly and that it's still in use etc would have helped me out a little. There was a bit of the assumption the audience is as familiar with it as you are.

[@DonLee1980]

Williams releasing their designs online were hoping people copy them, so that they'd get confused and slow down, allowing Williams to close the gap =)

[@elliottmiller3282]

WAIT YOUR BACK !? YEAH

[@edmondhung6097]

Can you do a after season analysis based on the floors photos that goes public?

[@toughjuggler5186]

Can you please analyse the 2024 formula 1 cars, I really enjoyed the videos of the 2023 cars analyse

[@therealBocaStudios]

RB is supposed to be scrapping RB19 and going a whole new direction next year. Most of the teams think they are playing catch-up with RB. But if RB is moving the goal posts then how could anyone really stand a chance, obviously RB discovered something, if you remember Christian Horners comments after the RB19’s floor was seen, he said something along the lines of “by the time they figure out what we’re doing we’ll be into something else”, that’s not a direct quote. Two questions for you..Why wouldn’t they try to improve on what they are doing to save costs? Second, what is really going to change, it almost has to be a side pod change doesn’t it?

[@martin_in_the_alps]

Could you please do an analysis of mythbusters golf dimples car?

[@geminireviews]

Didn’t know the front wing is behind the front wheels nowadays 😂 oh midjourney

[@SunsetWingman]

So pretty much right after you left merc they started making some wack aero lol. Maybe you were the secret

[@11metalfan]

Cost cap

[@Thesportynerd16]

Mr Movember, love it

[@zachtan]

Teams: "We misinterpreted the rrrules"

[@este.bahn92]

Kyle, please use transparent colors! Sometimes your drawings make it hard to see what it's behind them :(

[@henriwolbrink]

The best teams ending 2023 es season were using front push-rod and rear pull-rod (McLaren and RedBull). Is this the way to go?

[@Seyeler]

What program is this?

[@jwalster9412]

Imagine being in a motor sport so restrictive thst any liop hole, even if it isn't proven to help anything, is a good loophole.

[@RHBTurbochargers]

Ridiculous. I love it

[@zlm001]

Thanks.

[@BuddyCorp]

The moustache gives us truth.

[@glentight]

Kyle leaves Mercedes...... Mercedes become slower afterwards.....Hamilton Leaves . Kyle is the first domino.

[@san-joshuabarrett]

These are the reasons why i love F1. The engineers still find these little quirks with such tight regulations.

[@Aqeit]

Was there a NDA preventing this video prior the end of season?

[@onlythingicantstand]

kyle kyle kyle kyle kyle kyle kyle kyle kyle kyle please do more video please pllease

[@tomconius]

Please apply for a job as lead aerodynamic engineer at Haas, and help them improve 🙂

[@kashmir883]

i think about you when you don’t post 😢

[@TheFeatInk]

Bro are your eyes okay?

[@toyotagaz]

Was wondering the same

[@TheoneandonlyRAH]

Please return to Mercedes Kyle, they need you!

[@michaeljoefox]

I want to break freeeee

[@Alex.The.Lionnnnn]

Dude how much is your baby crying?!? Man needs a sleep! 😂

[@emerckx53]

Could you have saved them from ZERO POD? :)

[@ZachRiccardi]

So you’re the reason the w13 & 14 have trash aero, they need you buddy

[@ApolloVIIIYouAreGoForTLI]

Hold up….Williams did what now?

[@eayzgaj]

Nigel Mansell has lost some weight

[@theoquindipan7885]

this guy is so smart and awesome, but he looks like he snorts coke

[@DaveMcIroy]

Could you open your eyes, please?

[@geulach]

Will ya repeat that mercedes intership before every single video?

[@moStallion]

Cut the stash man

[@fastguy907]

why? it looks good

[@unknownname6519]

​@@fastguy907hell no

[@moStallion]

@@fastguy907 no it doesn't. It looks off putting. A beard without a stash looks better

[@fastguy907]

I mean dude can grow it where a lot of dudes can’t. I would go on to say he takes quite some pride into his stache.

[@fastguy907]

@@moStallionbut what about beard with stache?

[@555cring]

ai thumbnail 💀

[@captaintoyota3171]

Also what is with all these 20 something dudes rocking mustaches again? Not saying kyle is one but ive notice A LOT of ppl doing this lately

[@cf2081]

Movember (for charity)

[@mby_dk]

Sorry to say, but with your mouse bouncing around so much, it is impossible to follow which area you are pointing to. So I gave up.

[@mehmettanhantoygar827]

Your mouth has an eyebrow

[@tommiranda3158]

Love your videos, but PLEASE stop constantly moving your mouse around. It makes it impossible to keep attention on the part of the drawing your are referring to.

[@jim_mai]

your panning and zooming is too frantic. do better