A lot of people write off NASCAR as hillbilly bs but I love the engineering and physics side of it. I-racing simulator which might not be dead on will give you a really good idea about how hard it is to “drive in circles” they literally drive the cars to the edge of control like walking a tightrope.

@dsgp7835

Жыл бұрын

Kyle, I agree. Technically, NASCAR is no longer hillbilly but, there is a portion of the fanship that uncivilized. The sanctioning body is trying hard to preserve the sport. Unfortunately there is a portion of their audience that is very loud in their protest to the direction NASCAR is headed.

@dedo7326

Жыл бұрын

When I learned that you can pack air under another car to get them loose and possibly spin out was the day I fell in love with nascar and that if you drive past another at a certain point you can side draft them and slow them down while taking air off of them. It’s amazing stuff the fact they are going really really fast and able to manipulate air just 🤯

@jimduffy6767

Жыл бұрын

What’s wrong with hillbillies?

@jimduffy6767

Жыл бұрын

@Trey Baxter you get over that wuick

@SwigerQ86

Жыл бұрын

​@DSGP the things on the news lately. The city dwellers are the uncivilized. ..

For the car having more yaw, I remember the COT era and Penske had his cars (Sam Hornish Jr) so crabbed out that you could see the passenger door number while the car was coming straight at you. And yes, the crabbing was banned pretty quick.

@clinchleatherwood1012

Жыл бұрын

I remember too! Looked awesome but NASCAR was having none of it! haha

@Coolbreeze0988

Жыл бұрын

I would have loved to see what type of cars 20 years of development on the twisted sister Gen 4 cars would have produced.

@chada75

Жыл бұрын

Still legal in ARCA.

@p.melvinshyturtle3722

Жыл бұрын

2007 season.

Neil asked "Does it take a tragedy to introduce a safety feature?" which started me thinking back to some training I received when in the military. And that was one of my trainers making the statement that every safety rule in the military was wrote in blood. Because someone had to die for a rule to be wrote.

@taunhawk9888

Жыл бұрын

yup, same is said about FAA aviation rules

@TheSCPStudio

Жыл бұрын

Lol, you act as if forward thinking doesn't exist. You do realize they said most of that to scare you into compliance right? The military thrives off of brain washing techniques.

@vikingthedude

Жыл бұрын

Same in my household

@squiggly_lines

Жыл бұрын

*written ...we can assume you were not an officer....

@wymans668

Жыл бұрын

@@squiggly_lines No. I was enlisted. Also I was not an English major.

Dale Jr. Definitely knows how to work on the cars and what the parts do to each set up 🤣 he just didn't have to deal with it and he didn't go very far into detail. He knew what different shocks and springs meant back in the 80s

@nobodysdifferent

Жыл бұрын

dude knows his way around an engine😈‼️

When I was a kid (in the 1950s), I remember hearing the Circle Track cars racing - at a track 4 miles away. This was not an open desert. It was a suburban neighborhood.

Dale grew up in a strange time.He was in between the brain research in football with cte,as well as a gladiator of motorsport. Dale Jr is just a good guy and wants to help evolve the mindset of the guys and gals in nascar.

Neil having a current engineer and a driver for this kind of show is also great. You should get Larry Mac next time!

This episode is one of the best of star talk. Your guests were incredible in explaining how auto racing and physics are closely related.

I been away because of a family illness which sadly ended today. I still like to pop in and out and catch your alls show that teaches us the fascinating things about outer space. Always wonderful fun to sit in with you all.

What an amazing episode. Chucks explanation on sensory driving his motorcycle was brilliant!

@andoletube

Жыл бұрын

Agreed. He's deceptively intelligent, even though he plays the fool a lot of the time.

@chisquare5701

Жыл бұрын

@@andoletube I don't find anything deceptive about his intelligence. He's very quick-witted, and versed on an array of topics at a conversation level. He plays 'normal', but he's really a nerd. Just my take...

If she is talking about junior johnson when she says there is another junior, he actually passed away back in 2019. There is actually another junior still racing in nascar. Thats martin truex jr.

@laurin4405

Жыл бұрын

I had thought of Jr Johnson when she said it too.. Been away from NASCAR a few years(just a fan, not participant), so I had not known of Junior Johnson's passing... Man was Eyeball-deep in the Sport🏁🚗🏁

@jackson_68

Жыл бұрын

Ricky Stenhouse Jr also

@Lcngopher

Жыл бұрын

@@jackson_68 forgot about him. And he won the 500 too. Im now disappointed in myself😔

@jackson_68

Жыл бұрын

@@Lcngopher Now that I think on it more...Bubba Wallace might be a junior also (Darrell Walace Jr?)

Thank you so much Neil for covering this subject. I’m literally in tears because my love for physics has now become combined with fond memories of the times watching and attending Nascar with my late grandfather. Diandra- I just ordered your book! Thank you!!!! Thank you Chuck for providing the laments perspective!!! Gary’s perspective as someone who is new to sport was interesting as well! JR ❤ U are a legend! RIP Dale Sr.

I love when random things I like that are unconnected come together. I've been following Neil for several years and I'm a lifelong NASCAR fan. Dale Jr was my favorite driver. LOL😆 Also I've been watching Neil on VladTV. This is wild. This weed is tooooo good.

@kylewagoner

Жыл бұрын

Yeah my thoughts exactly. Weird worlds colliding. Now if they started talking about their favorite bands and Pokémon games I’ll know I’m in a simulation.

@rbee6507

Жыл бұрын

Hilarious. NASCAR doesn't get the respect it deserves, still, even from the U.S. sadly enough! Had no idea Neil was on Vlad btw, will have to check it out. Thanks for mentioning.

Listening to you has been a serendipity of information and fun. Thanks a lot.

Here comes a Mopar fan rant that goes back 60 years to the debut of the 426 Hemi; dominant in '64, banned in '65. A few years later, the Dodge Charger Daytona and Plymouth Superbird, once again dominant, restricted to running the Trans Am 5 liter small block engine. In the modern era, Dodge was banned from running the 3rd Gen Hemi, and the tail panel, above the rear bumper, was concave on the Dodge cars, 20 years ago. The air would 'barrel roll ' of the back of the race car; BANNED. I was a Nascar fan as a kid, and for those few years that Dodge competed, but when Dodge left, so did I.

It's not just fans that are attracted to the danger, it's a lot of the drivers. My uncle raced for over 40 years in all kinds of racing disciplines from NASCAR, drag racing, drag racing on sand, IMSA and other forms of sports car racing. He would be the first to say that he has always had a lot of daredevil in him. Starting racing in 1965 or so he told my mother that he did not expect to live to old age, so the fact that he is now 76, healthy, and never having a day job because he's been running a fabrication business out of his garage ever since he dropped out of college in 1966 because he was making too much money is all a bonus to him. He's living his best life now, taking his 85 Countache that he resurrected from being wrecked to show winning condition to car shows, and is currently installing a Corvette motor into some sort of Micco aircraft.

@jackson_68

Жыл бұрын

Uh huh

Most fans know all the small details in nascar thats why they're fans. If you dont know whats going on you wont like it. Gary asked good questions

My two favorite people in one segment, Frickin Awesome you Two Rock!

This conversation is absolute Gold, Im really enjoying this conversation amonst you folks!

Yall were mind blown with the cool engines making more horsepower, welcome to nitrous 101.... also, you don't use a torch to warm tires, you use tire warmers like MotoGP and F1.. and to add to this, check your tire pressures when the seasons change. Ambient temperature changes affect tire pressure, and thus tire longevity and performance.... last thing, chuck, for the bikes, always push the inside handlebar to lean into corners, never pull the outside

Regarding the talk about nitrogen being used in tires. As a rule of thumb when using ambient air (with some variation for humidity of said air when tires are filled) air pressure will increase by 1 psi for every 10°F of temperature. If all tires built the same amount of heat this wouldn't be as much of an issue. However, that is not the case. Nitrogen alleviates this greatly if properly applied. That is one small fragment of the puzzle. Don't even get me started on calculating fuel consumption and it's affect on weight distribution and handling during the closing laps of a race.

yes, but i bet they pump car sounds thru speakers in the stadium! Half or more of the event is the sound.

I remember how hard it was to adjust to watching an LCD screen display images so quietly after listening to the high pitched whine of a 90s tv. Im so glad so many of my friends survived

Brilliant special! Really enjoyed the work you guys put into this.

Wow I've never thought of ground effect in a lateral situation, but getting close to the outer wall is basically that

@michaelxr2460

Жыл бұрын

It creates a cushion of air they can lean on to keep a higher momentum through the corner.

@kyleurbanik1879

Жыл бұрын

Yeah Kyle Larson is always pretty fun to watch, he’s the master of running the wall. There’s a couple tracks he runs like inches from the wall it’s awesome.

@aaronb7990

Жыл бұрын

There was a season that the teams found an area in the rear end hub tolerance that let them make the cars track with like a foot of yaw. It looked hilarious on the straight but was super fast on the 1/2 miles that they could use the wall air cushion 'lateral ground effect'.

Amazing video. Get more experts like Dr. Diandra. She was, and I presume is, brilliant.

Formula E (as in electric) is in its 9th season. The circuit is coming to Portland International Raceway in late June. I think it's the only appearance in the States.

@gageguy

Жыл бұрын

I hope it's televised. Can't wait to see more acceleration in a Formula type race. And hearing only the aerodynamic noise of the cars will be interesting.

@tinracing

Жыл бұрын

@@gageguy Formula e is always broadcasted

Did she really say JR doesn't know what type of spring should go in a racecar?😂

17:48 when NdT asks can you put a cooling thing in there, that's what an intercooler in turbocharged car does. And you can add injectors that spray water onto the intercooler which reduces air temperature even further giving you more horsepower.

Love seeing Jr. on here!

This is my favorite episode of any show ever….

Way to go Lord Nice, giving motorcycle input on how "seat of the pants" rules over looking at instruments.

32:00 ARCA currently is an extreme example. The teams set up the cars to "Crab Walk" with the Right Rear sticking out.

Thinking about the comment he made about focusing on what's going on and also keeping the person's eyes on what's going on directly in front of them and it reminded me of my uncle's newer Corvette where he had all his information digitally displayed onto the windshield so he literally never really needed to take his eyes off of the road and could just focus on his tires grip according to his speed in the corning so he didn't just spin out like some newby with an old mustang with enough power and never drove on any rainy days anyways because I was with him and he punched the accelerator at 75 mph and the rear tires began to spin out some and he let off pretty quickly because it scared the crap outta him since it was all a fresh build to create more power and he had yet to test it until that dry sunny day..lol.. but yeah the heads up display onto the windshield has been out for quite a few years now.. my daughter is 13, so this was all before she was even born.

Dale Jr has these great interviews of some of the old timers and the innovative ways they got around the rules to get an advantage. For instance you had to have a certain height so what they would do is put soft metal or a hard plastic in between the coils in the springs so they would meet the pre-race inspection height but as they got to racing and after a few laps the soft metal would compress or the plastic would break and fall out and lower the height and get them more grip. Another trick was to fill the tubes that made up the frames with lead buckshot to make weight and then leave a plug in a place that wouldn't be noticed but the driver could reach down and remove and and after a few laps the lead shot would fall out and lighten up the car.

How about a pressure relief valve core? You set the pressure you want and inflate to that level. If it goes over the set PSI it lets air out to the set tire pressure. And discard the valve with every tire.

@67kemo

Жыл бұрын

That's actually a great idea. If I may, the one downside is that would create another point of failure on the tire. Sounds like it could work, though. We know how to create precision instruments, after all.

@alexschneider2206

Жыл бұрын

Off road guys use tire deflator to air down to a set pressure just like your talking about but I've never heard of them being used while driving. I like the idea

@Bikebrh

Жыл бұрын

That's very illegal in NASCAR. I think someone got busted for it last year, costing the team a bunch of money and getting the crew chief a lengthy suspension.

@67kemo

Жыл бұрын

@@Bikebrh That's unfortunate. It seems to me, if everyone had them, it would level the playing field. I'm curious about safety concerns, though. Or, what caused them to omit them in the first place? Did they think their use could confer an advantage for certain drivers, somehow?

@Bikebrh

Жыл бұрын

@@67kemo I think it's a difference in philosophy between NASCAR, and some other racing series like F1. F1 is all about the gadgets and tech, whereas NASCAR is purposely lower tech, partly to keep costs down, and partly to force the crew chief and pit crew to keep adjusting throughout the race based on the feedback the driver gives them. F1 is all about the car, the driver is almost secondary, NASCAR is about the driver. F1 tech is about making the car easier to drive, NASCAR rules are about making the car harder to drive. If everybody has those valve stems, it takes tire pressure off the table as something you must adjust.

About electric motor noise, it would not be technically hard to have an audio generator produce sound that would indicate motor load. Thanks Neil I love your show.

Great episode. Can you do Formula1 part too, that would be great.

@olgaantoneli729

11 ай бұрын

Second that! How great would it be to have as a guest Adrian Newey or James Allison!

Love the guy with the coffe table slick.Thats right up my alley there!

they need to be talking about the physics of sprint car racing i wanna see that conversation

Magnetical particle, I’m wondering if that has something to do with the timing belt and setting the timing and skip !

R2D2 does talk!!!! You have wounded my soul NDT!!!! Love ya guys!

The collab I didn’t think I’d ever get, NDT with Star Talk and Dale Jr. Can’t wait to watch this! Edit: That was an awesome podcast with a lot of different perspectives to view from. I’ll have to share this with the guys in the iracing league, as we’re all motorsports, and especially nascar, fanatics.

interesting difference is that electric race cars will not lose weight over the race... i wonder if the full weight during the entire race will impact tire wear and tire tactics for example

People do learn in different ways. Thanks for recognising 😊

Chuck, try counter-steering instead of pulling on the handlebars when going into a turn (you press on the opposite handle to turn). The motorcycle will lean for you and your tires will have better traction. This would also be fun for Dr. Tyson to explain, since it sounds counter-intuitive.

@jackson_68

Жыл бұрын

There is no “try counter-steering”…at anything other than very low speed it is how two-wheelers work.

4 things contribute to an engines cooling ability, exhaust (remove the hot air), oil (oil coolers), and of course coolant system, lastly surface area of hot parts and air moving over them (air cooled engines)

As for using Nitrogen in tires the aviation industry has been doing that for decades. 2 reasons, 1st nitrogen doesnt expand as you increase altitude, otherwise a tire set to 90psi at sea level would probably pop at 41,000 feet. 2nd as Dale says nitrogen isnt affected by temperature as normal air is. I know on the U-2s I used to work -95 degrees at altitude would condense the air in the tire if normal air was used. Hence nitrogen in aircraft tires.

Great segment

The thing is that in an electric car you might not listen to the engine as much, but you hear the tires more, so you calculate grip from that. People who do simracing esports (yes, videogames, same things) sometimes lower the engine volume and increase the tire volume in the game to understand the grip level. Maybe in an electric cars you'll have more sound data, should ask a Formula E driver.

As a cyclist, I completely understand what Jr. Is saying about sound. It is horribly dangerous to have a silent car approach from behind. I don't know it's there, and most drivers fail to understand right of way.

Man all you were having a fun time great show

R2D2 absolutely spoke and had conversations! When I was little I used to understand what R2 was saying... hmmm, might make an appointment with my Doctor.

Neil, teams can use their own spring rates, tire pressures, shock settings (compression/rebound) , weight distribution etc etc etc..... The list goes on. There are big differences between the car's setup wise.

I so appreciate this video. My dad was a lifelong Nascar fan and he brought me along. But Dr Diandra got me really interested when I found her vlog when she was embedded with Elliot Sadler's no. 19 team. JR is a gem for the sport and I’m glad you got to speak with him and gain some understanding of the world of racing

Good stuff!, Dale Jr is great for these talking points. You know someone that has a lot of knowledge in "The grey area" is Ray Evernham and Chad Knaus. They could give some great insight on physics and how things they developed to win races far more often than the competition.

I love the book "The Physics of NASCAR" there needs to be a second edition with the changes from "The Car of Tomorrow".

@ksteinwand6744

Жыл бұрын

I've got a copy of that book from my time at NASCAR Technical Institute. It was required reading for a couple of the courses in that program. Absolutely fantastic, and I agree, there needs to be a more current and relevant edition. Principles are still the same, but the processes are different.

Wow! Dale Jr and NDG....two of my favorite people!

Oil also cools the engine. Tyre noise is pretty substential. A nascar will still be way louder than a normal streetcar even if elecric. Heated nitrogen wont substantially heat a tyre because of the mass difference between tyre and the gas inside. A stockcar is pretty far from stock. The main challenge will be to do 500 miles electric.

Awesome episode

I have an Acura racing channel among other automotive things, and your channel was recommended for me to watch Dr Tyson...Nascar going Electric will be interesting for sure...but the batteries will have to be able to hold a charge for a long time, or lap times will be changed according to how long the batteries will last .

@J.D.Mc.

Жыл бұрын

They could design a side panel where they show up to pit, open the panel, slide out the duffel bag sized battery, quickly slide a charged one in, close the panel and take off. I imagine with a proper design they could keep pit times about the same.

@AcuraChannel

Жыл бұрын

@@J.D.Mc. Not a bad idea..

@itsd0nk

Жыл бұрын

@@J.D.Mc. That’s exactly what I was gonna say. They could design them to be swapped to a fully charged battery faster than a tire change. Wouldn’t even change pit times if done right.

@J.D.Mc.

Жыл бұрын

@@itsd0nk Right! Like swapping a battery for your remote or nose hair trimmer. Just pop open a pannel and battery slides out. Since the car gas no other luxury type features it could easily be done.

@H3LLS4NG3L

Жыл бұрын

OR the new pit stops can include a battery exchange. It would be easy enough to design slide-in/clip-in modularized battery compartments

This is the last guest I would have expected you to have on your star talk. Super cool. Collaboration!

Regularly watch both shows. When Neil talked previously about wanting to talk with someone about NASCAR, I was secretly hoping that would be Dale Jr. I am ecstatic

Can I get a list of the books on your bookshelf. I've read Cosmos by Carl Sagan but some of those other titles look interesting

This is a match up I never expected to see. Lmao. 😂

What a great show and topic, Dale Jr is more than just a race car driver, he is

@JeffreyBrewer-hi3ty

Жыл бұрын

Jr is

@JeffreyBrewer-hi3ty

Жыл бұрын

Jr is intelligence and noligable off the car's and engines and

A bit of an uncomfortable clash of my 2 worlds... you can be a NASCAR fan and have a deep understanding of science. Thank you for interviewing one of my favorite drivers and having Diandra key you guys in with the vast amount of physics and engineering involved into the sport.

@uliwehner

Жыл бұрын

i think the question was if the majority of fans knows the physics, and do they care? Clearly the guys on the podcast cared enough to find out.

Even small RC cars use all these physics to go fast too. I was just rebuilding my race buggy and making adjustments to its aerodynamics. Just wish the small tires lasted like full size versions.

I love sports and I love science this is right up my alley!

That was a good show Neil, Thank you for introducing science with an exciting subject such as engine racing, nascar, and such. keep up the good work.

This conversation pretty much sums up movie "Days of Thunder". A skilled indy car driver from poor team jumps to NASCAR becasue the cars are all the same and the only difference is the driver. He struggled to drive well until he was able to comminucate to the crew cheif the right terminology to make changes to the car so it responded to his driving style better. Then he dominated.

Half the NASCAR rulebook is "Gaddammit, Smokey" -- Smokey Yunick was a mechanic/crew chief in the '60s-'70s who was a firm believer in the principle "It's only cheating if there's a rule banning it." NASCAR limited the size of the fuel tank, Smokey put an inflated basketball in an oversized gas tank for tech inspection so it'd only hold the regulation 22 gallons, and deflated it and pulled it out before the race. When he was eventually caught doing that and they started watching for it, he noticed the rules didn't say anything about the fuel *lines* , and so he used fuel lines the size of garden hoses rolled up in the doors, getting a couple of extra gallons. Legend has it the tech inspectors removed the gas tank for a closer look, and Smokey drove off and said "Okay, I'll come back and pick it up when you're done." The next season the fuel lines had to be a specific diameter and no longer than necessary. One time when it still had to be a car you could buy from a dealership, Smokey subtly tweaked a Chevelle for better aero (the legend is he built it 7/8 scale, but IRL he just did a lot of small things like a belly pan, lowered suspension, tightening up panel/wheelwell gaps, custom more-aerodynamic grille and bumpers, modified trunk lid, things like that). The clever thing was that he built two -- one to race, and one to park in the spectators' parking lot so that when he was called on it, he took the tech guys out to the parking lot and wandered around a bit before "randomly" finding this "random spectator's" "factory car". "See? It's a real car! Here's one some fan drove here!" And that's why they have the templates.

Larry Mac, Mike Joy, and Clint Bowyer explain all this in the booth during every single race.

Niel deGrass Tyson should talk with Lenny Reed from Dynamite Diesal an talk about how Diesal performance has changed the industry. That will blow your mind.

Long live the Earnhardt name and brand. Great interview NDT. 🏁🏎️🏎️🏎️

@universeisundernoobligatio3283

Жыл бұрын

What's an Earnhardt is it a type of beer?

Most of us watching understand the physics! Nascar is what led me to love this show. Such a fun crossover!

I used to put chicken and a blend of spices in one tire, and potatoes, garlic, and butter in another and drive like a mad man for a good hour on the autobahn and slow roast them! YUM!😋It wasn't easy with the unmounting and mounting them, but man did it make a great meal!😜

Fuel injection was first used in aircraft, which then made its way into sportscar racing and F1, and then into street cars. Interestingly, Mercedes-Benz was not only using fuel injection in the 50's, they were also using direct injection, which is something that didn't really become popular until the past decade or so.

Want a good example of building a car for aero turning left, look up what they called the twisted sister cars between 2002 and 2010

At 1:10 you had me wondering for a short moment what "condensed metaphysics" might be ...

Could there be a "blow off valve" introduced? That would not allow overinflation after build, and I would think tire cooling back down to a point of underinflation would be much less likely. Fun fact: Valve stem caps on fast motorcycles are more important than fast cars, because due to the stem being pointed directly toward the center of rotation. Centrifugal force at high speed can actual "push down" the core (pin in the valve stem), allowing deflation.

@michaelxr2460

Жыл бұрын

This is against the rules. Crew chiefs have done this kind of thing for at least 40 years. They had “modified” bleeder valves that would lose air, or tiny pin holes to bleed pressure. This is something they didn’t really get into much, but if you can think of it, they’ve probably already tried it 40 years ago and have several rules against it.

That will really scew NASCAR up.

This was a fantastic episode Neil. We’ll done.

In electric vehicle transmission will make a balance of control in F 1 racing cars on racing track and sounds like combustion engine will cover up by a additional divice.

Nascar is the craziest sport, ive ever witnessed live. I cant even explain the power, speeds, and close quarters racing

I'm not speaking from a scientific background, I'm speaking from an experience background. I've spent hours in a dyno room and I can say with 100% certainty hot engines produce more power than cold engines. There is a reason a NASCAR engine will run north of 260° where a street engine will run around 200°. There is a significant increase in horsepower. The hotter you run an engine the more power it will produce, but the trick is to make it live at those high temperatures

what about an "in helmet UI"? The driver could use a see through visor technology, where in car controls while interacting with the electric vehicle utility interface just using their eyes?

A 'heads-up display" displays the information in front of the pilot/driver so that they have totake their eyes off the road.

@montyharder3663

Жыл бұрын

That was supposed to say "DON'T" but it got lost somehow.

Great job Neil.

plss help. Why dont we rate energy of battery like joules. Volts as i understand tell us the pushing power that battery can exert on charge. Sowhy do we add Ampere hours if we already know pushing power?

There should be a standard cooling unit that everyone uses. I did sim racing for a number of years and I'd sweat even with the ac on in my basement and a fan that I had hooked to a switch beside my steering wheel. I can only imagine what would be like wearing a suit and helmet at 130 F.

When Neil asked jr about the device that Sr refused to wear but almost certainly would have saved his life I couldn't help but hold my breath. That was interesting

The silence of electric cars lets you hear stuff you couldn't hear before. Road noise, Wind noise, tires losing grip. A plague for EV manufacturers but can be used in racing.

Good episode indeed! Not all us motor sports enthusiasts like crashes, though. I'd much, much rather see everyone finish the race, watching for competition and high level driving technique. Crashes suck, even if the person walks away unscathed. Show us some good overtakes!

You got one thing wrong, most of automotive design came from wwII air plane engines. Fuel injection was first used on the bf109 German fighter. More specifically, the dB 600 series engine.

This is the most I’ve seen Neil genuine and no ego

My question would be ,do they monitor the thermal temperature of the track to match thier cars to???🤔🤔

That' s why they added lead to gas in the 1930's. The dense lead atoms removed heat from the combustion chamber and valves.

U can make that’s elc car more sound satisfying by rim design to make sound while it’s spinning 👍

Electric race cars are absolutely not silent because they use straight cut gears. Those are a bit more efficient and a bit more resistant to wear. But they are so freaking loud, that in many race race cars you can still hear them through the engine noise (for example in many Rallye cars). It's a high pitched whirry noise. There have been a few KZreadrs privileged enough to have a spin in the Porsche Mission R prototype which is supposed to experiment what future customer race cars could be like. While that car is accelerating, it's so loud inside, that you can't hear them talk. But even if EV Race cars where silent, this opens up completely new sensory possiblities, as some EV reviewers pointed out, since they claimed to be able to hear which wheel was about to lose grip because of the tire sounds they could hear.