View Full Version : Proper Drivetrain layout
I put this in the "We played the demo- the bad" thread, but nobody said anything about it. This is something I consider to be of utmost importance in a game using real manufacturer's vehicles, so I'm reiterating.
The Gallardo does not act like an AWD car. I'm not just talking about its propensity to oversteer on throttle (especially off road). It doesn't do donuts like an AWD car, in that the part of the car that doesn't move is right at the front wheels, instead of the center of rotation being near the middle of the car. :mefiant: If you are sitting sideways on an incline, and mat the loud pedal, the rear end slides out, while the front stays put, just as if it were rear wheel drive. :noooo: Finally, just set the camera to a viewpoint outside the car, use right stick to orient the camera at the side of the car so you can see the front wheel and rear wheel at the same time, and start peeling out / doing donuts. The front wheels don't drive the car at all. I doubt there are going to be any front wheel drive cars in the game, but if there are, will they handle like RWD too? sour: This will be fixed, right?
I do agree the car doesn't act like an awd car at all
cgreene415
19-05-2006, 05:07
The fact that the cars must and should handle as close to the real thing as possible is one, if not the most important aspect of fun and realistic gameplay. In other words very good point. 10sur10 And it makes alot of sense to believe it will be fixed. I mean the specifications of each car is very specific showing BHP, Top speed, 0-60 speed, car weight, and even telling if it is RWD or AWD. So it definitely should be fixed.
does anyone know the difference in between what horsepower and torque mean. I always thought torque had to do with get up and go and roasting the tires, and though hp had to do with top speed and upper limit acceration.
PsychoM666
19-05-2006, 06:40
does anyone know the difference in between what horsepower and torque mean. I always thought torque had to do with get up and go and roasting the tires, and though hp had to do with top speed and upper limit acceration.
HP is the total power pre revltion of the engain
and torque is messureing how much of that power comes out of the rear axle i could be worng if i am im sorry for misinfomation
does anyone know the difference in between what horsepower and torque mean. I always thought torque had to do with get up and go and roasting the tires, and though hp had to do with top speed and upper limit acceration.
Torque is twisting force. Imagine, if you will, a stick (the axle), with a 1 foot long stick coming out of it at a 90 deg. angle (the wheel). if the 1 ft. long stick is pressing against a scale, and you are producing 100 ft-lbs. of torque, the scale will read 100 lbs. I hope that makes sense w/o a picture. :mefiant:
Horsepower is a mathematical equation, derived from torque, to evaluate the ability of said torque to do work. I'm sure a quick google search would tell more.
Fun fact: because of the way h.p. is calculated, horsepower and torque are ALWAYS equal at 5,252 r.p.m.
Bezzers1986
19-05-2006, 10:19
Cars with Higher torque will have better acceleration at lower revs and higher gears.
Low torque cars require low gears and high revs to get good accelaration.
Its one of the reasons a Diesel engine is good for overtaking in a higher gear, where petrol engines usually have to drop a gear.
fun-meter
20-05-2006, 09:17
and in sports and race cars, they have what is sometimes reffered to as a torque band, often between half your max revs (red line) to about 1000rpm before the red line, also depending on the engine size and how high it revs to. For example, in my opinion, i think the Porsche 996 GT3's torque band is at about 4500rpm-7500rpm, but the car will keep pulling (aka torque) all the way through the revs, due to the nature of its design and craftmanship.
Well, I think that this problem should be fixed. The physics IS the most important thing in a racing game. But the reason Why there is a bit strange physics in demo might be the driving aids turned on. It is not allowed to turn them off in DEMO but in final game it will be ;)
fun-meter
20-05-2006, 17:15
But the reason Why there is a bit strange physics in demo might be the driving aids turned on. It is not allowed to turn them off in DEMO but in final game it will be
Nice, but i mean, who wants traction control if your pushing a car hard. :)
You can turn drving aids off.
1. Get into a car, and free roam.
2. Put the widows up, and look at the window icon at the centre left of the screen.
3. As soon as the icon changes to 'close', press left on the d-pad.
4. Press left until you come to driving aids.
5. Press up and down to choose your option.
Voila :)
the_gaming_guy
20-05-2006, 17:19
i remember when you didn't believe the guy who said that.
i also remember that i say VOILA.
i also remember that you smell. tonguegre
fun-meter
20-05-2006, 17:29
are the driving aids the options which say like 'sport' 'driving aid' 'hypersport' etc...?
Yep, they are :)
Gaming guy, I remember that your gonna get owned by me in September :)
the_gaming_guy
20-05-2006, 19:25
ok then, you dream on buddy....
leighton
20-05-2006, 21:52
You can turn drving aids off.
1. Get into a car, and free roam.
2. Put the widows up, and look at the window icon at the centre left of the screen.
3. As soon as the icon changes to 'close', press left on the d-pad.
4. Press left until you come to driving aids.
5. Press up and down to choose your option.
Voila :)
Can you do this on the demo, like change them and stuff??
the_gaming_guy
20-05-2006, 21:54
apparently, yes
Can you do this on the demo, like change them and stuff??
Yes, you can :)
leighton
21-05-2006, 10:14
oh damn, my xbox 360 has just been sent off for repair so i have to wait to try this out, dammnnn!!
fun-meter
21-05-2006, 11:34
yeh, it works, cheers for that. :)
SIMON008
21-05-2006, 18:27
um i know this is a little off topic but how do you acess the driving aids
When driving in one of the cars, just press up on the D-pad to Operate your windows. The watch the left side of the screen where the windows message apeared. After a short while it will change to "close" or something like that. At that moment just press left on the Dpad. The first menue will be the radio menue(wich isn't working in the demo), the one after that is the driving aids.
leighton
21-05-2006, 19:05
so is it more of a glitch than a proper option, cos i have been on driving aids but it was greyed out. Can you post a video or a couple of pics of the difference and what the options look like in the menu. Is it like the ferrari wheel - race and that.
fun-meter
21-05-2006, 19:43
its a propper option i believe. you notice it when you change to 'hypersport' which is good (best option for me at the moment), but when its completely off you notice it more, you get over and under steer on the car if you push the car too hard around a corner. and with driving aids off you can do a wheel spin up to 90mph if you pull away in a certainly style, as well as 6th gear doughnuts. was just testing the car :D
um i know this is a little off topic but how do you acess the driving aids
Erm, did you see what I said? :rolleyes:
SIMON008
22-05-2006, 10:43
yes i did but i wanted to ask it again
gallardo is 70% power to the rear, with viscous central diff.
That means, that when going on donuts almost all power goes to rear ( because of the viscous diff) . this is not a central blocked diff.
gallardo is 70% power to the rear, with viscous central diff.
That means, that when going on donuts almost all power goes to rear ( because of the viscous diff) . this is not a central blocked diff.
they know there stuff. hats off to you. didn't know that
they know there stuff. hats off to you. didn't know that
To be even more precise, this is a behaviour you'll have almost only with donuts, because, when starting a donut with a car like that, the front wheel are steered a lot, and so act bit of braking the car from front, and rear tire are pushing, and so, rear tire will start to loos grip 1st.
If you look, Subaru WRC , the power ratio is somthing like 55%rear with a central limited slip differential. With this car it is very difficult to do donuts, because when you start loosing rear grip, the power is given to front wheels, and so you cant do donut.. you have to throw the car 90° with hand brake, and then slam the throttle, and if you lost enough grip with the handbrake, maybe you can do a donut.
In commercial cars, you always have central viscous differential , even on the subaru.. The only car i know that have central LSD is the Mitsubishi Lancer Evolution since version III.
cheers,
cgreene415
22-05-2006, 18:27
gallardo is 70% power to the rear, with viscous central diff.
That means, that when going on donuts almost all power goes to rear ( because of the viscous diff) . this is not a central blocked diff.
Is it that the torque split was always 30/70 or was the ESP doing something interesting. ESP is the management system and it will do things for you like trying to get you back together if it thinks you're not. This might mean application of the brakes on individual wheels or various other things. ESP is normally on but can be switched off manually.
70/30 is the main distrinution, that means, if no wheel are slipping, the distribution is 70/30.
Now because of the viscous central diff, the distribution can move back and forth depending of lots of thing i will not explain there ^^
cgreene415
23-05-2006, 15:49
cool, and I didn't even notice the Game Developer sig weirdblue . So now I feel much better with your answer. :) Glad you guys are really doing your research. :atari:
I have done a bit more research and playing around since I started this thread, and I do stand corrected. I did notice, when I got the Lambo stuck going up a hill, that the front wheels were spinning.
I would still think the darn thing would straighten out a bit more at high speed under throttle...
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