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I went to last years roval and I race go karts and welen

If you played gran turismo only a mitsubishi can come to your mind upon seeing this

Not mentioned was that those flaps came in the 1994 Winston Cup season in response to Rusty Wallace’s infamous crash at Talladega

All cars flipping have flaps!!!

It is skillless Type of racing xddd

I was terrified of flying until I started watching your videos. I learn so much. Thank you 👍🏻

4:56 And this was exacerbated in the early CoT (Gen5) days, with a rear wing instead of a spoiler. 5:33 It was as a response to this crash that NASCAR mandated flaps for the beds of the trucks in the 3rd-tier Truck Series, in addition to the roof flaps that had been mandated in 1994, not 1996 (so, actually, before the Truck Series existed).

The rear spoiler on those cars doesn't create much downforce. It's almost vertical, this shape doesn't create downforce, but essentially lots of drag. If you want some real downforce, an AoA of 30-40° is better. It's more an airbrake than a flap. This "pulls" the car from the rear, increasing lateral stability at high speeds. It's also meant to "break" the lifting shape/profile of the car at high speeds.

I'll add that roof flaps weren't an alternative to restrictor plates, they regulated that all cars have to have plates at Daytona and Talladega, after a crash at Talladega in the late 80s where the car flew in the air and hit the fence, tearing the fence apart, and sending quite a few fans to the hospital. That crash was in this video.

Nice vid

Ok but this just taught me so much about how aerodynamics lll

Thanks for the info. I'm going to remove my trunk latch right now

Roof flaps have been in NASCAR since 1994 after Rusty's crashes and other flips in stock car racing in 1993.

While it’s not a perfect system it does work in most cases. The only time they really had issues what’s when they put wings on the back and it made the flaps almost useless. But since switching back to regular spoilers it’s gone back to normal.

this is what lightning mcqueen has on the top of his roof!!

Btw they are called Airbrakes on planes not spoilers

My question is how the hell does a 3400 pound car go flying with only 550 to 770 hp and only going about 200 mph

How not to use downforce: Mark Webber explains.

It might have helped a bit but there have still been plenty of blowovers with the flaps, especially when a car gets spun to the right instead of left.

cooy of donut

We can all agree that NASCAR is as enjoyable as F1 is.

He didnt mention that teams would make the restrictor plate out of tin foil so it would be sucked away once the engine was started

Great video

There not "NASCARS" there "STOCKCARS " NASCAR is the name of the organization 🙄

Still don't get people that find Nascar excited. It's just cars driving in circles. I bet all people want to see is big crashes and explosions lol.

They ruined it and made it more dangerous first with the limiters tho

Wondering what the next invention is gonna be to save PASCAR. Better come up with something quick. It's dying fast. Dirt's for racing, Asphalt's for getting there. Everybody knows that.

Honestly thought those flaps were for like air breaks

Fastest? Perhaps Most exciting? Debatable

I saw Nascar IRL at Trois-Rivières which isn't a circle but an actual race track and I have to say that it's one of the best things i've done. The sound, the race, the openness of the pits where you're just next to the teams preparing the cars, everything was a blast. I doubt that it's that exciting on a circle as they just follow each other though.

Looks a normal day on I 480 here in northern ohio. Fastest highway in ohio.

Pressure of tires is also important because or they always go left or go right, so the pressure in left or right tires is different

Hi Scott, What's your advice on this question, background first: I'm an aerospace engineer, invented Lift Flaps (LFs) in 1989, told a NASCAR boss about it, he laughed, and kicked me out of their big plush track-side trailer with my NASCAR friend Dave Lovendahl, a Bilstein Shocks parts-engineer attending. I gave LFs to Dave, and went to on to other things, like the CIA, Diplomacy, aerospace, and China. LFs are simply [wing type] spoilers that suto-rise and kill areo lift-forces with backwards airflow, DUH! NOT rocket science! In 1990, Dave tried to explain it to NASCAR again, and they blew him off again with the joke: "What's a moron that ONLY turn left?" Then there was a big crash which I think killed a driver, (I forget who, I was overseas) the Media want wild against NASCAR, the NASCAR bosses freaked, woke up, suddenly called Dave, and he explained LFs to them AGAIN... The next day, literally, they screwed and Black-Listed Dave = no profit or thanks, partnered with Jack Roush, and made $$$ killings playing Jesus-Level Life Saviors for CASH. (AKA Assholes) Dave had a family to support, so he left NASCAR bitterly, and went over to the more the honest & fair Drag Racing world. Q: So Scott, how many lives do you roughly estimate my LFs invention has saved over the last thirty years? I don't expect anything from _____________ (fill in plural adjective of your choice) NASCAR and Jack. I'm happier as a diplomat etc, and glad to have saved a few lives, cars, body work, fix-it cash for drivers and managers, reduced the miseries of widows and orphans, and so on. Chalmers Wood - philosopher@usa.com You can look me up on Facebook if you wish. Meanwhile: Stay HEALTHY!

Nascar has some of the nastiest crashes but somehow has the least death

What always blows my mind is nascar is actually getting slower every year, not faster like a lot of motor sports

Genius!!

3:05 nascar director of competition is a real dick

The thing about that guy in the formula 3000 car is horrible to hear, such a sad story

NASCAR is exciting Well I wonder if your Heard about moutain racing

Much talking, but almost nothing about the way the flaps open themselves. Is not clear.

SAVED NASCAR ? NOTHING can save NASCAR !

So basically the solutions was "car lifts off because fast speed aerodynamics, so just make car don't go as fast"

Am I the only one to notice that many of the examples of airborne cars (eg the one where the narrator describes a car going end-over-end) appear to have these flaps fitted and deployed?

NASCAR stock cars. Not Nascars. Just fyi!! Alot of people don't know it stand for National Association for Stock Car Auto Racing. It's not a type of car

I thought they were just there to act as a parachute when the cars were backwards

very nice video. amazing tech. the explanation about lift is off though. "the air has a longer way to go" doesn't provide any reason it would go faster and infact the air kn the longer side of the foil (the top of a airplane wing) can reach the end of the wing profile before the air on the underside does.

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0:06 Some of the world's fastest racing, yes. Most exciting? Not since NASCAR have pretended the sport's the NFL with quarters and playoffs

10 min talk for 30s of Information.

Depressing

Title: The simple invention that saved NASCAR Me: right turns?

Great editing on this one...

If one gets the grip of the principle that accelerated fluid experiences a drop in pressure, then most of the tech -both on the exterior and the interior of a car (engine, intake manifolds, exhaust)- suddenly make a ton of sense. Thanks for repeating it once more in this very explanatory video!

Amazing video, but it's not due to the longer traveled distance that the air on the top side of a wing goes faster. Refer to this article: www.grc.nasa.gov/www/k-12/airplane/wrong1.html

Simple invention that destroyed nascar... RESTRICTOR PLATES

Your wrong, it was a crack team of Elete Tactical FBI agents that shaved NASCAR from an evil right garage door pull.

Who watches nascar for the crashes? Lol 😂

almost all the crashes youve shown were cars that had flaps, is there a statistic on how many accidents they have actually prevented?

The roof flap was in 1994 not 1996

NASCAR is a joke

I didnt know that in czech republic were formula races. I live there and just found out cuz of u lol

“Keeping the tires on the track in nascar is also important” Isn’t that important for every type of car?

What happened if nascar not use that

American engineering is sooo far behind European engineering that its shameful. Look at the vast advances in F1 compared to the typically substandard American engineering. The difference is as stark as day and night.

I like how he showed the Mercedes clr

I don’t know how people like this sport. I really dot get it. Certainly something with more diversity like f1 would be better for entertainment?

There is something wrong with this picture (0:59)! Normally, the rider's helmet must be 5 cm below the line connecting the two Rollbars. The pilot is too high, if the car overturns, he risks touching the ground with his head...

0:56 ayyy who else is from the Czech Republic

Anyone wanna else thing that bc of the roof flap it causes more of a chance for it to go airborne?

2:25 let’s be honest, by that logic a NASCAR has not got that much downforce

Awesome man i really wanted to know this actually so thank you

0:43 ALMOST PERFECT LANDING

You expl,ained a lot of the principles, but barely skimmed the surface about the device itself or the way it works. And you showed countless vids of cars equipped with the device going airborne anyway...

Do you mean Marco Campos fatal crash at Magny Cours (F-3000, 15 October 1995)?

it's interesting how several of the crash examples, had this solution in place

isn't NASCAR dying?

As an aviator, I have to say that the explanation was spot on!

Everyone: goes insane over the explanation of lift.

And then you gonna turn to the left!

thank you. Thank you. THANK YOU! I have never seen a British person give NASCAR so much praise, any person I come across that is mainly a fan of F1 normally says the sport sucks because it’s just driving ovals. They still do drive on road courses like Sonoma and Watkins Glen, then even used to race at Montreal! And the sport has come so far in safety just like F1 and so many other sports have, and deserve just as much praise as other sports get.

F1 fans may look down upon NASCAR for being primitive by comparison, but that simple invention is PURE ENGINEERING GENIUS. Absolute genius.

Nascar flip reduction Hello everyone, this is your daily dose of Recommendation

I love this solution , is such a great concept and relatively simple when you have seen it. Just down to airflow, no complicated sensors or electronics ... such brilliance :)

i just love how smooth was that transition to introduce your sponsor aha , smooth as milk

Its shame that you've experienced someone else crashing and dying, specially in my country 😪😔.F.

Im czech😳

Who is driver he mention that got serious crash and passed away ?

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To sum this up in one sentence. NASCAR put Air Brakes on their cars to reduce air time.

Turn left

Your explanation of the aero in this was quite good. I have wind tunnel research experience in this area but it relates to open wheelers rather than stock cars.

Nothing “genius” about it. It was a response to a rule change. More clickbait Scott?

this is really a simple aerodynamic feature! genius!

3:27 is not true. The air does not "have to" travel faster above wing becouse of the difference of the travel distance. There is no reason why same air particles should meet after past wing. Air flows faster above wing becouse of the Venturi effect. The shape of the wing makes a choke with surrounding air and that is why it moves faster on the wings upper surface. And anyways most of the wings lift is caused by angle of attack.

i'm sad for that driver

3:30 please no.....and he said the wrong explanation.

I'm sad you didn't include a clip of cars as a joke.

Not trying to be rude but I don't see what's so fun about watching cars going around in a circle lol