Why Does my dodge Viper want to take off and fly?

[Smackinjuice]

Viper Acr 1031 HP

it well... enjoys taking off whenever it get's any kind of air.

also does the normal viper get better handling because you can't change your ACR's front aerodynamic; cause you can't put any on.

But the standard viper you can.

Also why does it have such bad understeer? i been doing all the tuning needed for better oversteer but it still can't compete in the gran turismo world series.

but honestly when i give it to bob he takes corners slower then a prowler...

 

[Welsh-Fury]

Are you setting the rear downforce to the max of the ACR? It's actually faster with the stock wing, performance and speed wise.

 

[Smackinjuice]

I bought a new wing; but no I actually had it set to the opposite.

but it will take off a lot worse if i set it to max like you said. It's whenever i hit any jump; but sometimes they can even be a small bumb when i have max rear downforce.

I can't control the front... what's the point of the acr if i can't set something like that? yeah and extra 70 or so HP; but i rather have better handling. This car has bad understeer; I know I still need to mess with my settings; but my civic can turn better lol.

 

[tonderai]

Try softening suspension little bit at a time. My 600+ hp M5 had this problem which I cured by doing the above.

 

[shmogt]

To set max u go to the right just incase u made a mistake. Also put racing soft tires and suspension on it and just search for a tune on here. I have all the vipers and that one is my fav since it can go 250mph with no drafting and still handle well. Before u see a large bump in the road hit brakes quick and it causes the car to go down so when u hit the bump the car is either still on the road or at least more stable when in the air

 

[BS_Kustomz]

sounds to me like you're experiencing a phenomenon called "G'ing out".

this happens when the rear tires try to rotate the car while in the air with the areo of the ACR exasperating the condition. try letting off the gas just before you go off the crest of the hill that should help quite a bit. you may even have to tap the brakes to further the effect

this is the same technique that motoX riders, baja, and monster truck drivers use to land flat after a jump

 

[Skiddy]

sounds to me like you're experiencing a phenomenon called "G'ing out".

this happens when the rear tires try to rotate the car while in the air with the areo of the ACR exasperating the condition. try letting off the gas just before you go off the crest of the hill that should help quite a bit. you may even have to tap the brakes to further the effect

this is the same technique that motoX riders, baja, and monster truck drivers use to land flat after a jump

interesting, but.. the reactive torque generated from the Viper is not so large that it can rotate the whole (front engined) car like that. I'm talking about the reactive tourqe here. Not sam as the "active" tourqe, the one that makes the car accelerate.. It's a different story with motorcycles, they have bigger wheels and a better weight distribution (engine in the middle)..

 

[Yev]

Ballast is there for a reason.
I've spent about 10+ hours on my ACR tune and it's perfect.
Feels like a RM 'Vette now.

 

[BS_Kustomz]

interesting, but.. the reactive torque generated from the Viper is not so large that it can rotate the whole (front engined) car like that. I'm talking about the reactive tourqe here. Not sam as the "active" tourqe, the one that makes the car accelerate.. It's a different story with motorcycles, they have bigger wheels and a better weight distribution (engine in the middle)..

i've had the same issue he's having with some of my higher powered cars, this seemed to fix it

 

[Skiddy]

i've had the same issue he's having with some of my higher powered cars, this seemed to fix it

I think it's more of a aerodynamic phenomena. To much rear downforce. Taping the brake will slow the car down and shift its weight forwards just before the jump. That will decrease the car's front lift off.

To test your theory about the G'ing, try hitting the handbrake while in midair. Sudden rear wheel lock should turn lift off into a nose plunge.. Worth a shot.

 

[Smackinjuice]

Yeah; this is definitely a game physic engine problem. Any car over 1250kg isn't going to be flying lol

Also would the standard dodge viper be better? since you can adjust the front aerodynamics. I know they don't make a big difference but i mean like technically. I realize the standard one won't have as much HP; but that's ok, i can hardly use what I have now.

 

[BarronGeddon]

why does it have such bad understeer?

it well... enjoys taking off whenever it get's any kind of air.

lol

it has 1031 bhp

still, could be worse..

http://www.youtube.com/watch?v=a4Rito91k0I

 

[TG1410]

lol

it has 1031 bhp

still, could be worse..

still, could be worse..

 

[uMadson?]

still, could be worse..

I lol'd hard at your Top Gear reference.

 

[SavageEvil]

Yeah; this is definitely a game physic engine problem. Any car over 1250kg isn't going to be flying lol

Also would the standard dodge viper be better? since you can adjust the front aerodynamics. I know they don't make a big difference but i mean like technically. I realize the standard one won't have as much HP; but that's ok, i can hardly use what I have now.

I beg to differ, as long as you have enough velocity you can cause the heaviest of cars to leave the road relatively easy. On the Nurburgring heading toward the Flugplatz, the prior section that goes over the bridge and up the hill at full speed many cars will leave the ground, my S7 does it and that car is around 1300kgs. Lifting off has less to do with weight and more to do with power and velocity, any car that has considerable amount of torque will end up in the air. Funny thing about torque is you can't measure it in mph correctly as 1/4 mile mph readouts dictate, so when in a torque monster brake early before going over the edge, usually a quick stab before the front end leaves the road should level you out for the jump.

 

[sporkafife]

Maybe it's because you maxed it out to over 1000hp without tinkering with other settings aswell, I'm surprised it didn't explode XD

 

[G.T.Ace]

You are driving a 1000 HP car with a massive rear wing and without adjustable front aerodynamics and let me guess, you drive it hard in the game? What do you expect? Serious question.

 

[jonny_goddard]

wait, how do you get 1031hp?? mines fully tuned and only a meagre 1001hp (and i've driven it a lot...)

 

[SigmaViper11]

Well, idk about the flight, but whatever you do, don't do Chassis reinforcement. . . The car will drive like a godspeed lead brick.

 

[grog]

wait, how do you get 1031hp?? mines fully tuned and only a meagre 1001hp (and i've driven it a lot...)

Engine break in plus an oil change ( 2nd one, after 250 miles).

 

[Exorcet]

Gravity is -32 ft/s^2

Apparent drop in terrain is ~ the slope at the point under the car times velocity.

If abs(apparent drop) > abs(Gravity + downforce), car goes off the ground. Mass doesn't matter. Excessive rear downforce with cause the nose to go up, as will accelerating while going over a bump.

 

[Smackinjuice]

Well you can't put a front wing on; but yes i put a big ass wing in the back. I figured it gave me downforce and kept me on the ground; but apparently 1000 horsepower = flying reindeer

 

[grog]

i put a big ass wing in the back. I figured it gave me downforce and kept me on the ground; but apparently 1000 horsepower = flying reindeer

It does keep you on the ground to some extent, but having the wing on the back only helps the rear end, the front end is still on its own so to speak.

 

[leggs11]

Gravity is -32 ft/s^2

Apparent drop in terrain is ~ the slope at the point under the car times velocity.

If abs(apparent drop) > abs(Gravity + downforce), car goes off the ground. Mass doesn't matter. Excessive rear downforce with cause the nose to go up, as will accelerating while going over a bump.

This is not correct. Gravity is an acceleration, downforce is a force. You can't add the two together.

Gravity creates a weight force which is the force pulling the car onto the ground at all times.

Weight force = mass x gravity

Hence mass is a key point in whether a car will lift off the ground or not, ie. the heavier the car, the harder it is for a car to lift off the ground.

 

[Smackinjuice]

wait; i thought you only accelerate from gravity until you are going the speed of gravity?

i mean it's not an acceleration; it's a force.

 

[Exorcet]

This is not correct. Gravity is an acceleration, downforce is a force. You can't add the two together.

Gravity creates a weight force which is the force pulling the car onto the ground at all times.

Weight force = mass x gravity

Hence mass is a key point in whether a car will lift off the ground or not, ie. the heavier the car, the harder it is for a car to lift off the ground.

Gravity will accelerate any mass at the same rate. Downforce is the only thing (on a car) that will change that acceleration. Granted, the downforce acceleration, for a given amount of downforce, does change with mass, but in the general case, mass doesn't give you any information about whether a car will "take off" or not. A lighter car is not more likely to slide or take off on a bump.

 

[rennsport27]

Gravity will accelerate any mass at the same rate. Downforce is the only thing (on a car) that will change that acceleration. Granted, the downforce acceleration, for a given amount of downforce, does change with mass, but in the general case, mass doesn't give you any information about whether a car will "take off" or not. A lighter car is not more likely to slide or take off on a bump.

The downforce created by the wing is not all that significant compared to the other forces acting on the car in mid-air, but it's the only force that acts away from the car's center of mass, and therefore the only one that creates a rotational moment. This is what gets the front end in the air and makes the car prone to getting airborne. The mass of the car DOES affect this, since with a given force acting at a set distance from the center of mass, the mass is what affects the angular acceleration. I'm not sure if all of this is actually accounted for in the game physics, but if it is, given that for non RM cars, the downforce is usually about the same, the lighter cars would be more likely to take off when it hits a bump.

 

[Skiddy]

Gravity will accelerate any mass at the same rate. Downforce is the only thing (on a car) that will change that acceleration. Granted, the downforce acceleration, for a given amount of downforce, does change with mass, but in the general case, mass doesn't give you any information about whether a car will "take off" or not. A lighter car is not more likely to slide or take off on a bump.

First thing's first. Downforce acceleration??

A light car IS MORE likely to lift of on a bump.

Why? Because there's not enough of weight force (mass times gravity) to hold it on the ground. The bump will divert the cars momentum slightly up (it will change the car's velocity vector slightly up). That is the force that will launch a car. Two forces act the opposite way to stop the launch: down force and weight. So there you have it, heavier cars have more weight force to hold them down.

And yeah:
Never compare downforce and gravity because they are two very different things. One is not a force and is almost constant on our planet, and the other is downforce.

 

[Skiddy]

The downforce created by the wing is not all that significant compared to the other forces acting on the car in mid-air, but it's the only force that acts away from the car's center of mass, and therefore the only one that creates a rotational moment. This is what gets the front end in the air and makes the car prone to getting airborne. The mass of the car DOES affect this, since with a given force acting at a set distance from the center of mass, the mass is what affects the angular acceleration. I'm not sure if all of this is actually accounted for in the game physics, but if it is, given that for non RM cars, the downforce is usually about the same, the lighter cars would be more likely to take off when it hits a bump.

F1 cars generate enough downforce to drive upside down (the tunnel ceeling if you like) That's more downforce than the weight (mass times gravity) of the whole car. super cars generate around 100 - 200 kg of extra "mass" at top speeds. That is significant.