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- Thread starter gamelle71
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shirakawaa
Premium
- 5,034
- GTP_shirakawaa
He tried figuring out the layout by looking at the very tiny track pictures in the Cape Ring South image.
Personally, I tried tracing the north section and after a few attempts in my opinion it's different than that, at least when the short, isolated version is selected. Here are four attempts I made:
And this is the averaged result of many attempts:
But maybe my brain locked into thinking that the layout of the north section was kind of S-shaped.
It appears that the guy was driving backwards, but the game, at least for aerodynamics simulation, thought he was driving in reverse, thus creating strange artifacts probably due to the rear wing lifting over a certain speed.
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- 5,009
- Val d'Orcia,Tuscany
- hardvibes
- ACR HardVibes
Just a very old bug...forget about it.
The thing that pisses me off is that the guy uploaded this video 2 days ago....like the video is recent. It's NOT. It's like 9 months old.
Anes
(Banned)
- 1,735
- AnesthesiaXVII
Read that quote slowly. A hot tyre is softer than a cold tyre which means the soft tyre is less likely to screech because it's more flexible and conforming to the road. A hard tyre is obviously going to have a higher frequency.
Surely even you know drivers weave on the warm up laps? Well I can get my front tyres screaching on a warm up lap in everything but a lightweight, semi slick formula ford but if a safety car appears and I go back to weaving to keep the heat up then guess what?! The tyres don't make a sound because they are hot.
As I've said, I have real life experience, but all the experience you have is from watching Youtube videos and you think that makes you an expert 👎 I bet that's what most people's arguments from around here are based on. Sorry kiddo, I've left my computer. Unlucky.
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- 1,629
- RedSuinit
Removed, unnecessary, and childish, apologies.
As for your argument, I still believe it's wrong. It's not about how well it conforms to the track, that's NOT what causes vibrations, it's when the GRIP of the tire breaks (meaning you have reached the maximum allowable kinetic friction between the rubber and the asphalt) causing the tire to return to it's natural shape, this motion results in vibrations in the wall of the tire. The tire will then grab the asphalt AGAIN, and will break again as soon as the friction between tire and asphalt reaches just below the allowable kinetic friction, and will repeat this process until the velocity of the tire reaches a level that will no longer break the allowable kinetic friction between the rubber and the road. The reason why you would not hear the squealing when you are weaving back and forth is because the maximum allowable kinetic friction is HIGHER in a warm tire than a cold one. HOWEVER, once you reach that point where the maximum allowable kinetic friction is reached, the amount of force generated by the "grip and release" mechanism will be greater in a WARM tire than in a cold one, thus resulting in the possibility of MORE vibrations. I only say possibility is because the ration between the ratio of forces between warm:cold is more:less, but the ratio for the number of "grip and release" cycles SHOULD be less:more, possibly causing the overall number of vibrations to even out.
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- 2,796
- São Paulo
- Dravonic
Since it touches the road better, reaching grooves a cold tire wouldn't, doesn't that mean it will have even more reason to screech? More areas touching the road and loosing contact with it, therefore generating more vibrations. But maybe since it's soft, it will loose pieces instead of loosing contact with the road, therefore screech less.
I dunno, it could be either.
Anes
(Banned)
- 1,735
- AnesthesiaXVII
Think of it in extremes, a hot soft tyre is like a marshmallow and a cold tyre like a piece of plastic. The marshmallow will just absorb everything better including vibrations unless you have tyre chatter. I'm no scientist or anything but I know from personal experience that hot tyres barely make a noise. Cue RedSuinit suddenly posting Youtube videos and telling me I'm wrong.
- 1,629
- RedSuinit
Lol, nice one pal 👍 I present a logical argument (and I have some experience that reaffirms my stance) and all you have to say is the above. Can you give a video, sound byte, ANYTHING to help your case besides "I have experience, I just know" I have provided a lot more to help my case than you and your "decade of experience" has to yours. Still would like to see that "photo".
- 441
- Montreal
- Orbit-360
- 2,796
- São Paulo
- Dravonic
It does make sense but how much softer do they actually get? Would it be enough to make it absorb the vibrations enough so it won't screech?
I have no racing experience but I do drive a car daily and I've noted that old tires make a dragging noise instead of the screeching new tires generate. Tires do get harder over the years so they should screech even more according to what you said, not less. But hey, I don't drive in slicks. It could be that the screeching is there in new tires because of the vibrations resonating in the cavities. Therefore, since the cavities are nearly gone in old tires, they won't screech anymore.
Lol, you got me curious.
- 9,971
- Denmark
- 2,586
- trk29
This is what he means by getting soft and elastic. Notice how the tire gets so hot and soft it starts to just peel back. MotoGP and AMA get sideways through corners and you can see smoke coming off tires sometimes because they are spinning through the corner but you can't hear the tires, granted they have a lot less contact with the ground then a pair of car tires, just saying.
- 1,629
- RedSuinit
But seriously, that's an old bug. The kind of thing that is probably fixed by now.
So indeed, a tire may actually start to disintegrate instead of loosing contact with and gripping back to the road. In which case it wouldn't screech, or screech a lot less.
That is a good observation, and a variable that had not crossed my mind. If the tire does start to break apart, then I can understand there being no screech. It's like you say, the "break and grip" cycle would not occur, causing little to no vibration in the tire.
SuperShouden
(Banned)
- 7,542
- SuperShouden
The ol' wheelie setup. Been around since GT2, at least. You raise the nose, lower the backside, increase the rear downforce and decrease the front downforce and certain cars would pop a wheelie at high speeds. I think, however, with rollover implimented, you won't be able to do that, as the thing that makes you pop a wheelie is air flow under the car. Hopefully, doing such a set up will see a lot of flipping.
shirakawaa
Premium
- 5,034
- GTP_shirakawaa
What causes screeching is tire vibration, and tire treads are a great source of vibration under load. This is why treaded tires generally (much of this depends on how they're designed) screech much more than slicks or semi-slicks, something that has been already partially recreated in Gran Turismo 4. A soft tire will generally vibrate more than a harder one since it can generate more grip and when starts loosing it the vibrations caused by the repeated breaking up of traction will be stronger.
As tire temperature increases, grip increases up to a certain point (thus increasing the potential for screeching), after which quickly decreases. This is why during extended "burnouts" or otherwise wheelspin, noise tends to decrease. Less grip -> less vibrations -> less noise.
As tire temperature increases, grip increases up to a certain point (thus increasing the potential for screeching), after which quickly decreases. This is why during extended "burnouts" or otherwise wheelspin, noise tends to decrease. Less grip -> less vibrations -> less noise.
- 7,830
- U S A
- Tetsumura
- Nigel Fox
I haven't seen a racing game yet which handled tire sounds by type and make. Be glad it's not Forza 2 or 3, where everything sounds like a truck.
- 86
- GTP_PickleAhoy
Latest news has turned into the battle of the who can chop more old videos together =_=
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