Mythbusters GT5

[diegorborges]

About car fuel consumption, it really do makes a huge difference in some cases... I used La Sarthe for some quick benchmarks and there was some interesting results as the prius just using 1 liter to do a full lap (13+km) in a "civilized" pace, and the Veyron who is a complete gaz guzzler drinking 14 liters of juice to do a full lap @ full throttle...

I just wish the cars had the real fuel tanks and we could choose the ammount of gas on them =/

 

[VspecZR1GT2RS89]

It's the turbulant (?) air that comes from behind the leading car. It's the reason that f1 cars can catch up to each other, but not necessarly pass each other as easily as the closed the gap; they just lose all their aero advantage.

And also this is how NASCAR cars and even LMPs can keep up with each other as well?

Because with NASCAR racing, you can see hundreds of cars sticking to the leader, espically on ovals or super speedway, why? Because of turbulant air forces keeping all of the cars in close counters in a cluster. Even you don't see many aerodynamic parts on NASCARs, they are lowered, but not like LMPs or F1s, but the formula with this does happen also to these cars as the other racing cars.

LMPs also have a similar effect also, mostly seen on the Muslane straight with and without chicanes. LMP cars are lower than NASCARs, but not as low compared to F1s and have more aero (visually and non-visible) parts than NASCAR cars. But both aero do show huge amounts of air being pushed from under the car, thus creating downforce and when this happens to LMP#1 shooting down Le Sarthe's Muslane straight LMP#2 is following number 1, LMP1 downforce is set, but LMP2 is being drawn by its draft and the air effect and uses it to reach LMP1 with little or no problems to its aero.

Is this similar to the use of turbulant air in the mentioned racecars right? Because I can see it occuring every time I drive these cars. Feel free to enlighten me with more info on this theroy or any corrections on this.

 

[brainfade]

And also this is how NASCAR cars and even LMPs can keep up with each other as well?

Because with NASCAR racing, you can see hundreds of cars sticking to the leader, espically on ovals or super speedway, why? Because of turbulant air forces keeping all of the cars in close counters in a cluster. Even you don't see many aerodynamic parts on NASCARs, they are lowered, but not like LMPs or F1s, but the formula with this does happen also to these cars as the other racing cars.

LMPs also have a similar effect also, mostly seen on the Muslane straight with and without chicanes. LMP cars are lower than NASCARs, but not as low compared to F1s and have more aero (visually and non-visible) parts than NASCAR cars. But both aero do show huge amounts of air being pushed from under the car, thus creating downforce and when this happens to LMP#1 shooting down Le Sarthe's Muslane straight LMP#2 is following number 1, LMP1 downforce is set, but LMP2 is being drawn by its draft and the air effect and uses it to reach LMP1 with little or no problems to its aero.

Is this similar to the use of turbulant air in the mentioned racecars right? Because I can see it occuring every time I drive these cars. Feel free to enlighten me with more info on this theroy or any corrections on this.

With NASCAR they tend to be bunched because they're not very aerodynamic and depend more on mechanical grip, hence why you see chassis adjustments in pit-stops, they also run restrictor plates which restrict power when you're not behind another car and this amplifies the slipstream effect. They also behave like this because the regulations are set to bunch the cars, hence why we see this "cautions breeding cautions" racing.

The reason why you don't see with with F1 and LMP is because they depend more on aerodynamics to produce grip, so naturally if you place them in the slipstream of a car they will lose grip, this effect tends to F1 cars more, the grip reduction is said to be around anything between 5-20% of the cars overall downforce. This is not helped in either case by the fact you have turbulent air in this wake caused by other devices like the strakes in the diffuser, the sharp edges (they create small amounts of downforce by creating turbulence), gurney flaps, etc.. Remember, the job of the diffuser on these cars is to create downforce by drawing air under the car and directing it upwards and it's this flow of upwards air that creates the bulk of the turbulence in the slipstream:

This occurs to a far lesser extent with the LMP cars because they gain more downforce via diffuser/ground-effect, whereas around 60-80% of the downforce that F1 cars produce is generate via the wings, contrary to what the settings tell you in GT5, more of it tends to rely on the front wing in particular and it's the lack or airflow on the front wing in the slipstream + the turbulent air which causes the loss of grip, LMP cars don't have this problem as they give off less turbulence and get their downforce from a full-body length diffuser, remember the diffusers on F1 cars are heavily restricted, even with double-diffusers and exhaust-blown systems.

The slipstreams in the game in general are too strong in this game and generally in real life the LMP2 rules are done in a way so that if you absolutely nail the car's design/construction/functionality, then you are able to compete with the LMP1s, we saw this with the MG-Lola's and Dyson-Lola's against the R8's and the Porsche RS Spyder's against the R8 and R10. This is why you may be able to keep up with LMP1s with an LMP2 car, the grip levels are more or less the same, the difference is mainly in power.

What you've described in your second paragraph is the effects of the slipstream, it shouldn't really occur in that manner, the slipstream is simply to strong in the game.

 

[squirlybmx]

I've been thinking about wall turbulence lately. In Indy they tend to distance themselves from the wall on the straights because the air rebounds off the wall of over the car again slowing them.

 

[hokiefan8686]

I've been thinking about wall turbulence lately. In Indy they tend to distance themselves from the wall on the straights because the air rebounds off the wall of over the car again slowing them.

If you were close enough would you create a pocket where there was no resistance? I always got as close as possible thinking this was the case. Your info makes sence I think I just need to be proved wrong.

 

[VspecZR1GT2RS89]

With NASCAR they tend to be bunched because they're not very aerodynamic and depend more on mechanical grip, hence why you see chassis adjustments in pit-stops, they also run restrictor plates which restrict power when you're not behind another car and this amplifies the slipstream effect. They also behave like this because the regulations are set to bunch the cars, hence why we see this "cautions breeding cautions" racing.

The reason why you don't see with with F1 and LMP is because they depend more on aerodynamics to produce grip, so naturally if you place them in the slipstream of a car they will lose grip, this effect tends to F1 cars more, the grip reduction is said to be around anything between 5-20% of the cars overall downforce. This is not helped in either case by the fact you have turbulent air in this wake caused by other devices like the strakes in the diffuser, the sharp edges (they create small amounts of downforce by creating turbulence), gurney flaps, etc.. Remember, the job of the diffuser on these cars is to create downforce by drawing air under the car and directing it upwards and it's this flow of upwards air that creates the bulk of the turbulence in the slipstream:

This occurs to a far lesser extent with the LMP cars because they gain more downforce via diffuser/ground-effect, whereas around 60-80% of the downforce that F1 cars produce is generate via the wings, contrary to what the settings tell you in GT5, more of it tends to rely on the front wing in particular and it's the lack or airflow on the front wing in the slipstream + the turbulent air which causes the loss of grip, LMP cars don't have this problem as they give off less turbulence and get their downforce from a full-body length diffuser, remember the diffusers on F1 cars are heavily restricted, even with double-diffusers and exhaust-blown systems.

The slipstreams in the game in general are too strong in this game and generally in real life the LMP2 rules are done in a way so that if you absolutely nail the car's design/construction/functionality, then you are able to compete with the LMP1s, we saw this with the MG-Lola's and Dyson-Lola's against the R8's and the Porsche RS Spyder's against the R8 and R10. This is why you may be able to keep up with LMP1s with an LMP2 car, the grip levels are more or less the same, the difference is mainly in power.

What you've described in your second paragraph is the effects of the slipstream, it shouldn't really occur in that manner, the slipstream is simply to strong in the game.

Thanks for the info 👍.

I was thinking about the charactristics of turbulance air effect and a educated guess on does this also effect other cars, espically with racing cars of different specs on cars that aren't in the F1 league. I'm going to do some research on this.

 

[Bushby_23]

And also this is how NASCAR cars and even LMPs can keep up with each other as well?

Because with NASCAR racing, you can see hundreds of cars sticking to the leader, espically on ovals or super speedway, why? Because of turbulant air forces keeping all of the cars in close counters in a cluster. Even you don't see many aerodynamic parts on NASCARs, they are lowered, but not like LMPs or F1s, but the formula with this does happen also to these cars as the other racing cars.

LMPs also have a similar effect also, mostly seen on the Muslane straight with and without chicanes. LMP cars are lower than NASCARs, but not as low compared to F1s and have more aero (visually and non-visible) parts than NASCAR cars. But both aero do show huge amounts of air being pushed from under the car, thus creating downforce and when this happens to LMP#1 shooting down Le Sarthe's Muslane straight LMP#2 is following number 1, LMP1 downforce is set, but LMP2 is being drawn by its draft and the air effect and uses it to reach LMP1 with little or no problems to its aero.

Is this similar to the use of turbulant air in the mentioned racecars right? Because I can see it occuring every time I drive these cars. Feel free to enlighten me with more info on this theroy or any corrections on this.

What you are reffering to is drafting on straights, were aero down force isn't needed. There is less air directly behind the car in front, so the following car can capitalise on less air and use its power more efficiently speed wise.

What I was referring to was that through corners in high down force vehicles, the air is disturbed and doesn't act the way it normally would in still air.

With NASCAR they tend to be bunched because they're not very aerodynamic and depend more on mechanical grip, hence why you see chassis adjustments in pit-stops, they also run restrictor plates which restrict power when you're not behind another car and this amplifies the slipstream effect. They also behave like this because the regulations are set to bunch the cars, hence why we see this "cautions breeding cautions" racing.

The reason why you don't see with with F1 and LMP is because they depend more on aerodynamics to produce grip, so naturally if you place them in the slipstream of a car they will lose grip, this effect tends to F1 cars more, the grip reduction is said to be around anything between 5-20% of the cars overall downforce. This is not helped in either case by the fact you have turbulent air in this wake caused by other devices like the strakes in the diffuser, the sharp edges (they create small amounts of downforce by creating turbulence), gurney flaps, etc.. Remember, the job of the diffuser on these cars is to create downforce by drawing air under the car and directing it upwards and it's this flow of upwards air that creates the bulk of the turbulence in the slipstream:

This occurs to a far lesser extent with the LMP cars because they gain more downforce via diffuser/ground-effect, whereas around 60-80% of the downforce that F1 cars produce is generate via the wings, contrary to what the settings tell you in GT5, more of it tends to rely on the front wing in particular and it's the lack or airflow on the front wing in the slipstream + the turbulent air which causes the loss of grip, LMP cars don't have this problem as they give off less turbulence and get their downforce from a full-body length diffuser, remember the diffusers on F1 cars are heavily restricted, even with double-diffusers and exhaust-blown systems.

The slipstreams in the game in general are too strong in this game and generally in real life the LMP2 rules are done in a way so that if you absolutely nail the car's design/construction/functionality, then you are able to compete with the LMP1s, we saw this with the MG-Lola's and Dyson-Lola's against the R8's and the Porsche RS Spyder's against the R8 and R10. This is why you may be able to keep up with LMP1s with an LMP2 car, the grip levels are more or less the same, the difference is mainly in power.

What you've described in your second paragraph is the effects of the slipstream, it shouldn't really occur in that manner, the slipstream is simply to strong in the game.

+1 👍

 

[Bushby_23]

Sorry for double post, please delete

 

[noisiaturismo]

The game, will it blend?

Nah, you can try that.

What about the effects of car wash and rigidity and chassis rebuild? Are they actually worth the cost?

Car wash makes it look beautiful again and gives you more aerodynamics, and chassis rebuild gives you better handeling, except if you drive clean.

How about the perpetually argued theory that the suspension settings are backwards? I wish that one would be killed off.

How would we do that? I've heard that rear ride hight dropped makes your front drive worse, just some ''improvements'' to the front and watch how they affect the rear?

Fuel weight. Does it change?

Easy one to test, on Daytona on racing softs, and only change tyres while driving. Lamborghini Murcielago LP640?

If we are basing this all around Mythbusters then surely some kind of test will have to involve explosions at some point

Speaking of which...I wonder what is the car that can suffer the absolute highest levels of damage in the whole game? The WRCs would appear to have the best detail but there's no telling the level of damage they can all completely take together at this point.

High Speed Ring, grind against the wall in first corner and run all the time to crash in the second. I need to borrow the rally cars though.

 

[[InsertGr8Name]]

Here's one I've wanted to know. When racing a track with a jump (Cape Ring or custom) which settings will result in more stability when landing? High Downforce, Low Downforce, etc?

 

[DrifterJoe]

Can confirm fuel weight, I'm 2 to 3 tenths quicker round Daytona with a low fuel than a full tank (NASCAR).

You'll notice the dirty air if you race at Indy online (just make sure you have a setup that can run flat out round the track with ease). Dirty air was either not around or un-noticeable (to me) before 2.0 .

 

[Aaronrray]

Here's one I've wanted to know. When racing a track with a jump (Cape Ring or custom) which settings will result in more stability when landing? High Downforce, Low Downforce, etc?

I think higher df front and lower rear causes better flight stability. I'll test that on my jump track.

 

[FelipeMartins]

When i have some free time i will try doing a video about this myths

 

[Moontallico]

Here's a video about dirty air that explains it all very well
http://video.app.msn.com/watch/vide...pkey=51ce3c6a-5fe5-4d0e-8b41-b4434aa7fee4||||

 

[jtv90069]

I think higher df front and lower rear causes better flight stability. I'll test that on my jump track.

Likely would depend on whether car is front or rear heavy then trying to even it out with aero adjustments. more front downforce on rear heavy and more rear downforce on front heavy cars. each cars natural aero dynamic will also effect it aerial ability. try a car you know is bad and see if you can make it fly better.