<![CDATA[Forums - Cars & Tracks]]> https://www.vdrift.net/Forum/ Sat, 18 Apr 2026 19:22:58 +0000 MyBB <![CDATA[Exporting tracks from blender 2.80]]> https://www.vdrift.net/Forum/showthread.php?tid=2451 Fri, 03 Jan 2020 08:57:00 -0800 alex25]]> https://www.vdrift.net/Forum/showthread.php?tid=2451
looking at blender-scripts/blender28/vdrift.py at joe_pack.from_mesh() at line 367 i see

  objlist = bpy.context.scene.collection.objects

but it's empty so no wonder nothing gets exported.

thanks.]]>
looking at blender-scripts/blender28/vdrift.py at joe_pack.from_mesh() at line 367 i see

  objlist = bpy.context.scene.collection.objects

but it's empty so no wonder nothing gets exported.

thanks.]]> <![CDATA[Adding brake and reverse light meshes]]> https://www.vdrift.net/Forum/showthread.php?tid=2384 Sat, 04 May 2019 11:23:01 -0700 mattcan]]> https://www.vdrift.net/Forum/showthread.php?tid=2384 https://github.com/VDrift/vdrift/issues/23

Since I don't have SVN access, I figure this is the best place to upload the changes. CT is attached in this post.

If anyone wants to add their changes, feel free to post in this thread.

.zip   CT.zip (Size: 4.29 KB / Downloads: 1) ]]> https://github.com/VDrift/vdrift/issues/23

Since I don't have SVN access, I figure this is the best place to upload the changes. CT is attached in this post.

If anyone wants to add their changes, feel free to post in this thread.

.zip   CT.zip (Size: 4.29 KB / Downloads: 1) ]]> <![CDATA[Problem with Ferrari F40 in Monza]]> https://www.vdrift.net/Forum/showthread.php?tid=2382 Mon, 15 Apr 2019 08:08:20 -0700 leillo1975]]> https://www.vdrift.net/Forum/showthread.php?tid=2382
I don't know if this problem is a Car (Ferrari F40) or a track (Monza) problem. If you drive this car in this track, you can crash with Kerbs. I think that is more descriptive this video:



Also, as you can see, the wheel is a cube inside the car.
A suggestion for Monza circuit. Is possible to change the color of the Asphalt to a normal tone (dark grey), like Monza 88, for example.]]>
I don't know if this problem is a Car (Ferrari F40) or a track (Monza) problem. If you drive this car in this track, you can crash with Kerbs. I think that is more descriptive this video:



Also, as you can see, the wheel is a cube inside the car.
A suggestion for Monza circuit. Is possible to change the color of the Asphalt to a normal tone (dark grey), like Monza 88, for example.]]> <![CDATA[DG-Mi1]]> https://www.vdrift.net/Forum/showthread.php?tid=2317 Sat, 09 Dec 2017 03:18:52 -0800 drivingx]]> https://www.vdrift.net/Forum/showthread.php?tid=2317 ]]> ]]> <![CDATA[Torque curve list from real car !]]> https://www.vdrift.net/Forum/showthread.php?tid=2298 Tue, 25 Jul 2017 01:51:45 -0700 dongvanhung]]> https://www.vdrift.net/Forum/showthread.php?tid=2298

To get the real Torque curve list from real car are quite difficult. If someone have real torque curve from real info of real car. Please post here !

Thanks in advanced.]]>

To get the real Torque curve list from real car are quite difficult. If someone have real torque curve from real info of real car. Please post here !

Thanks in advanced.]]> <![CDATA[A petition for a 'ghost' car]]> https://www.vdrift.net/Forum/showthread.php?tid=2230 Thu, 20 Oct 2016 22:06:14 -0700 arturo]]> https://www.vdrift.net/Forum/showthread.php?tid=2230
What I need is a body.joe file (plus, I assume, the corresponding .png texture) that contains... well, nothing. The bare minimun of a mesh: just one point in space, or just the smallest triangle, I don't know.

The final result should be a "transparent" body, with only the wheels visible in each corner, which I will use for the cars I try to develop (right now, I am working on the simulation of a Hyundai Ioniq with 13' wheels to compensate for a very long 6th gear).

Up till now, my workaround for this has always been to "bodysnatch" any other car and use a forward hood view so that I can forget that I am driving something that looks completely different to what I'd like. But now I thought that I could use the replay function to check how close to the apex I get in some corners, and such a "bare wheels" view would be great for that.

Many thanks in advance to the kind soul that will spare a few minutes to make an old man happy.]]>
What I need is a body.joe file (plus, I assume, the corresponding .png texture) that contains... well, nothing. The bare minimun of a mesh: just one point in space, or just the smallest triangle, I don't know.

The final result should be a "transparent" body, with only the wheels visible in each corner, which I will use for the cars I try to develop (right now, I am working on the simulation of a Hyundai Ioniq with 13' wheels to compensate for a very long 6th gear).

Up till now, my workaround for this has always been to "bodysnatch" any other car and use a forward hood view so that I can forget that I am driving something that looks completely different to what I'd like. But now I thought that I could use the replay function to check how close to the apex I get in some corners, and such a "bare wheels" view would be great for that.

Many thanks in advance to the kind soul that will spare a few minutes to make an old man happy.]]> <![CDATA[Ring2007: do not use "racing" tyres]]> https://www.vdrift.net/Forum/showthread.php?tid=2221 Sun, 12 Jun 2016 15:49:25 -0700 arturo]]> https://www.vdrift.net/Forum/showthread.php?tid=2221
There is nothing that good at Racer and it is simply not possible to recreate a proper Karrussell in the track format used by Torcs and Speed Dreams, with a constant width.

However, your driving pleasure will be greatly diminished if you mount tyres of the "racing" type. For some reason, these interact very abruptly with some kerbs and even with the (visually flat) cobblestones in the left at the Stefan Bellof S.

The solution is very simple: use "sports" or "touring" tyres and these interactions no longer occur.]]>
There is nothing that good at Racer and it is simply not possible to recreate a proper Karrussell in the track format used by Torcs and Speed Dreams, with a constant width.

However, your driving pleasure will be greatly diminished if you mount tyres of the "racing" type. For some reason, these interact very abruptly with some kerbs and even with the (visually flat) cobblestones in the left at the Stefan Bellof S.

The solution is very simple: use "sports" or "touring" tyres and these interactions no longer occur.]]> <![CDATA[An electric sports car]]> https://www.vdrift.net/Forum/showthread.php?tid=2220 Wed, 08 Jun 2016 10:00:09 -0700 arturo]]> https://www.vdrift.net/Forum/showthread.php?tid=2220
Code:
[engine]
(...)
max-power = 221000
torque-curve-00 = 0, 1111
torque-curve-01 = 1900, 1111

Electric motors give a constant torque up to the regime of maximum power. You can then increase the regime, only to get a proportional reduction in torque so that power (equal to torque x rpm) remains the same.

The figures come from another project I'm playing with (if only I could find the 3d mesh ready-made): a C5 Tourer with the 300 hp engine of a Jaguar XF 3.0D... and matching electric power to the rear wheels! Admittedly, these would only push during short bursts (normally at the exit of a turn but also at top speed when needed to pass a competitor) using the energy recovered from braking. Those electric motors are the ones used here, without the internal combustion engine and hence with much larger batteries.

The maths involved are really easy to understand: the Jaguar engine produces its 221 kW at 4000 rpm, while the Citroën transmission has a final reduction ratio in 6th gear of 2.11. This means that the wheels (and the motors attached to the rear ones) are turning at 1900 rpm at top speed, which in turn means that we need 1111 Nm to achieve 221 kW.

Remember to make sure that your in-game clutch is strong enough to handle in excess of 1111 Nm. In fact, we are not simulating a clutch here but a fixed direct transmission between each motor and each rear wheel (which in theory would allow for torque vectoring around corners). Our gearbox and differential couldn’t be more simple:

Code:
[transmission]
gears = 1
gear-ratio-r = -1.0
gear-ratio-1 = 1.0
(...)
[differential-rear]
final-drive = 1.0

I’ve made no other changes, only touring instead of sporting tyres given that much less grip is needed now. Top speed is 228 kph with the utterly unrealistic AX2’s drag coefficient of 0.30 (when you think that a typical closed-top LMP1 has 0.47, and even if the frontal area could be reduced from 2 to 1.7 square meters).]]>
Code:
[engine]
(...)
max-power = 221000
torque-curve-00 = 0, 1111
torque-curve-01 = 1900, 1111

Electric motors give a constant torque up to the regime of maximum power. You can then increase the regime, only to get a proportional reduction in torque so that power (equal to torque x rpm) remains the same.

The figures come from another project I'm playing with (if only I could find the 3d mesh ready-made): a C5 Tourer with the 300 hp engine of a Jaguar XF 3.0D... and matching electric power to the rear wheels! Admittedly, these would only push during short bursts (normally at the exit of a turn but also at top speed when needed to pass a competitor) using the energy recovered from braking. Those electric motors are the ones used here, without the internal combustion engine and hence with much larger batteries.

The maths involved are really easy to understand: the Jaguar engine produces its 221 kW at 4000 rpm, while the Citroën transmission has a final reduction ratio in 6th gear of 2.11. This means that the wheels (and the motors attached to the rear ones) are turning at 1900 rpm at top speed, which in turn means that we need 1111 Nm to achieve 221 kW.

Remember to make sure that your in-game clutch is strong enough to handle in excess of 1111 Nm. In fact, we are not simulating a clutch here but a fixed direct transmission between each motor and each rear wheel (which in theory would allow for torque vectoring around corners). Our gearbox and differential couldn’t be more simple:

Code:
[transmission]
gears = 1
gear-ratio-r = -1.0
gear-ratio-1 = 1.0
(...)
[differential-rear]
final-drive = 1.0

I’ve made no other changes, only touring instead of sporting tyres given that much less grip is needed now. Top speed is 228 kph with the utterly unrealistic AX2’s drag coefficient of 0.30 (when you think that a typical closed-top LMP1 has 0.47, and even if the frontal area could be reduced from 2 to 1.7 square meters).]]> <![CDATA[Fixing brake bias - AX2 (to begin with)]]> https://www.vdrift.net/Forum/showthread.php?tid=2219 Wed, 08 Jun 2016 06:18:59 -0700 arturo]]> https://www.vdrift.net/Forum/showthread.php?tid=2219
AX2, tested in Spa2008, spins in the approach to the first turn (La Source), even at relatively low speed -- bring it from 61/39 to 62/38 (yes, that is just one percentage point) and you will be fine.]]>
AX2, tested in Spa2008, spins in the approach to the first turn (La Source), even at relatively low speed -- bring it from 61/39 to 62/38 (yes, that is just one percentage point) and you will be fine.]]> <![CDATA[Request for additional car data.]]> https://www.vdrift.net/Forum/showthread.php?tid=2206 Sun, 03 Jan 2016 13:33:25 -0800 vdriftz]]> https://www.vdrift.net/Forum/showthread.php?tid=2206
I downloaded the car data files of the Modena 360
and of the 2002 Formula One racing car, containing
extensive information about these vehicles.

I would be very grateful if anybody can provide the
following data on the above cars, or on any other
suitable vehicles:

(1) Wheel data (wheel = tyre + rim):

The mass of each wheel m_w.

The radius and width of each wheel, r_w and w_w.

The moment of inertia of each wheel about an axis through
its center of mass and perpendicular to the plane of the
wheel, I_w_zz.

The moment of inertia of each wheel about an axis through
its center of mass and perpendicular to the ground plane,
I_w_xx.



(2) Car body data (car body = car without the four wheels)

The mass of the car body m_b.

The dimensions of a rectangular box (length, width and height)
bounding the car body.

The widths of the front and rear axles.

The length of the wheelbase.

The position of the center of mass of the car body relative
to the wheelbase.

The moment of inertia of the car body about an axis through
its center of mass and perpendicular to the ground plane,
I_b_zz.



(3) Drive train data (drive train = engine + gearbox +
drive shaft + differential gear-box + side shafts)

Equivalent inertia of the drive train defined as follows.

Approximate the rotational inertia of the drive train, with
an equivalent inertia rotating about the axis of rotation
of the engine crank shaft.

Thanks very much.

Constantine Frangos.]]>
I downloaded the car data files of the Modena 360
and of the 2002 Formula One racing car, containing
extensive information about these vehicles.

I would be very grateful if anybody can provide the
following data on the above cars, or on any other
suitable vehicles:

(1) Wheel data (wheel = tyre + rim):

The mass of each wheel m_w.

The radius and width of each wheel, r_w and w_w.

The moment of inertia of each wheel about an axis through
its center of mass and perpendicular to the plane of the
wheel, I_w_zz.

The moment of inertia of each wheel about an axis through
its center of mass and perpendicular to the ground plane,
I_w_xx.



(2) Car body data (car body = car without the four wheels)

The mass of the car body m_b.

The dimensions of a rectangular box (length, width and height)
bounding the car body.

The widths of the front and rear axles.

The length of the wheelbase.

The position of the center of mass of the car body relative
to the wheelbase.

The moment of inertia of the car body about an axis through
its center of mass and perpendicular to the ground plane,
I_b_zz.



(3) Drive train data (drive train = engine + gearbox +
drive shaft + differential gear-box + side shafts)

Equivalent inertia of the drive train defined as follows.

Approximate the rotational inertia of the drive train, with
an equivalent inertia rotating about the axis of rotation
of the engine crank shaft.

Thanks very much.

Constantine Frangos.]]> <![CDATA[HOW TO create a car for VDrift (1) - The .car file]]> https://www.vdrift.net/Forum/showthread.php?tid=2205 Mon, 14 Dec 2015 03:56:25 -0800 arturo]]> https://www.vdrift.net/Forum/showthread.php?tid=2205
The first thing to understand is that there are two almost completely separate processess at work: one is art (the 3D mesh and the textures, which will determine how your car looks), the other is physics (the parameters in the .car file, which will determine how your car drives). The only link between both is that the wheels, whose position will be determined by the values for wheelbase and front/rear tracks set (implicitly) in your .car file, must fit into the bodywork.

We will only deal with the physics side here. I will post separately about how to generate the model in Blender from an absolute beginner's perspective.

In order to create your .car file, you must start by looking at the description of all VDrift car parameters here:
https://github.com/VDrift/vdrift/blob/ma...ameters.md

Do you want realistic values for your car? This may not be the case if you are only interested in playing the game and have fun. But for those who want to simulate the behavior of their cars as closely as posible, real values are needed.

If you want a one-stop shop, have a look at this page:
http://www.automobile-catalog.com/
It is the only place that I know where you can sistematically find gear ratios. Unfortunately, it is still in construction. They proceed alphabetically, and at the time or writing they are working on letter N.

Another interesting place, where you can find torque curves in an immediately exploitable format is here:
http://www.zeperfs.com/
You have to register to have access to the full functionality, including the torque curves, but according to my experience this is perfectly safe.

Some parameters will allow you to 'tune' your car performance. Let's look at the brakes. Which pads will you mount in the front and in the rear? Values for the friction coeficient can be found in the Internet from various makers; a very useful table including real-world racing uses can be found at the end of the introduction to this document:
http://www.apracing.com/drawings/2015 Product Catalogue/2015 Brake pads.pdf

Regarding brake bias, you can get a rough approximation using this calculator (set the values to metric first of all):
http://brakepower.com/

However, nothing will replace on-track testing. You have to try and send more braking to the rear wheels until the point where the car becomes unstable.]]>
The first thing to understand is that there are two almost completely separate processess at work: one is art (the 3D mesh and the textures, which will determine how your car looks), the other is physics (the parameters in the .car file, which will determine how your car drives). The only link between both is that the wheels, whose position will be determined by the values for wheelbase and front/rear tracks set (implicitly) in your .car file, must fit into the bodywork.

We will only deal with the physics side here. I will post separately about how to generate the model in Blender from an absolute beginner's perspective.

In order to create your .car file, you must start by looking at the description of all VDrift car parameters here:
https://github.com/VDrift/vdrift/blob/ma...ameters.md

Do you want realistic values for your car? This may not be the case if you are only interested in playing the game and have fun. But for those who want to simulate the behavior of their cars as closely as posible, real values are needed.

If you want a one-stop shop, have a look at this page:
http://www.automobile-catalog.com/
It is the only place that I know where you can sistematically find gear ratios. Unfortunately, it is still in construction. They proceed alphabetically, and at the time or writing they are working on letter N.

Another interesting place, where you can find torque curves in an immediately exploitable format is here:
http://www.zeperfs.com/
You have to register to have access to the full functionality, including the torque curves, but according to my experience this is perfectly safe.

Some parameters will allow you to 'tune' your car performance. Let's look at the brakes. Which pads will you mount in the front and in the rear? Values for the friction coeficient can be found in the Internet from various makers; a very useful table including real-world racing uses can be found at the end of the introduction to this document:
http://www.apracing.com/drawings/2015 Product Catalogue/2015 Brake pads.pdf

Regarding brake bias, you can get a rough approximation using this calculator (set the values to metric first of all):
http://brakepower.com/

However, nothing will replace on-track testing. You have to try and send more braking to the rear wheels until the point where the car becomes unstable.]]> <![CDATA[Engine max power]]> https://www.vdrift.net/Forum/showthread.php?tid=2194 Wed, 23 Sep 2015 12:46:08 -0700 slickx]]> https://www.vdrift.net/Forum/showthread.php?tid=2194 displacement = 2.0E-3

can someone tell me how this is calculated so i could put some good values for drifting cars?]]> displacement = 2.0E-3

can someone tell me how this is calculated so i could put some good values for drifting cars?]]> <![CDATA[Cars from Stunt Rally]]> https://www.vdrift.net/Forum/showthread.php?tid=2184 Fri, 31 Jul 2015 04:05:11 -0700 CrystalH]]> https://www.vdrift.net/Forum/showthread.php?tid=2184 Was really fast to do. Some preview:
Code:
http://imgur.com/a/TCcWq#0
Didn't try wheels yet. Hope you like it / are interested.

I got blender 2.70, latest is 2.75. Scripts are for 2.6, is that okay or do they need to be updated?
Code:
https://github.com/VDrift/blender-scripts

Currently IDK why it doesn't get colored in game, is just white.
I see some odd info in wiki, like textures need to be 512, this has 1024 and it works.
Code:
https://github.com/VDrift/vdrift/blob/master/docs/Creating_cars.md#texture-the-models
And what range for triangle count is good. Seriously not 3500 as on wiki Undecided (that's for 1 wheel not whole car)
Code:
https://github.com/VDrift/vdrift/blob/master/docs/Creating_cars.md#body-model

I'm gonna need some help since the .car format I know is from 2010.
And I don't know how to position wheels, and hinge. BTW do the caster, toe, etc params work?

Also, what is the approach. Do I need to position model with center in center of mass? I.e. is adjusting COM only done this way?
What do you suggest? Getting a .car file closest to this, and fixing some params?
I doubt we can get all real values anyway. I tried recently for Y7 but the stuff that's nowhere to find is e.g. tire rolling resistance, drag and downforce etc.

More info on SR cars at:
Code:
http://stuntrally.tuxfamily.org/cars?id=XZ
And on this model:
Code:
https://github.com/stuntrally/blendfiles/blob/master/cars/XZ/about.txt
Code:
http://www.blendswap.com/blends/view/19869

PS. Tag buttons just input [unidentified=unidentified]. Huh]]> Was really fast to do. Some preview:
Code:
http://imgur.com/a/TCcWq#0
Didn't try wheels yet. Hope you like it / are interested.

I got blender 2.70, latest is 2.75. Scripts are for 2.6, is that okay or do they need to be updated?
Code:
https://github.com/VDrift/blender-scripts

Currently IDK why it doesn't get colored in game, is just white.
I see some odd info in wiki, like textures need to be 512, this has 1024 and it works.
Code:
https://github.com/VDrift/vdrift/blob/master/docs/Creating_cars.md#texture-the-models
And what range for triangle count is good. Seriously not 3500 as on wiki Undecided (that's for 1 wheel not whole car)
Code:
https://github.com/VDrift/vdrift/blob/master/docs/Creating_cars.md#body-model

I'm gonna need some help since the .car format I know is from 2010.
And I don't know how to position wheels, and hinge. BTW do the caster, toe, etc params work?

Also, what is the approach. Do I need to position model with center in center of mass? I.e. is adjusting COM only done this way?
What do you suggest? Getting a .car file closest to this, and fixing some params?
I doubt we can get all real values anyway. I tried recently for Y7 but the stuff that's nowhere to find is e.g. tire rolling resistance, drag and downforce etc.

More info on SR cars at:
Code:
http://stuntrally.tuxfamily.org/cars?id=XZ
And on this model:
Code:
https://github.com/stuntrally/blendfiles/blob/master/cars/XZ/about.txt
Code:
http://www.blendswap.com/blends/view/19869

PS. Tag buttons just input [unidentified=unidentified]. Huh]]> <![CDATA[Car brakes review and fixes]]> https://www.vdrift.net/Forum/showthread.php?tid=2182 Wed, 29 Jul 2015 04:08:13 -0700 NaN]]> https://www.vdrift.net/Forum/showthread.php?tid=2182
There are a few cars that should have much more aggressive brakes now.

I've ran into one interesting case. TC (Toyota Celica ST185 Rally) reports
60-0 stopping distance (no ABS): 124.708 ft
60-0 stopping distance (ABS): 2326.04 ft

No idea what is going on with the ABS there, will look into it.

EDIT:
There are also a few cars with max power not matching torque curve it seems, which results in incorrect top speed estimation.]]>
There are a few cars that should have much more aggressive brakes now.

I've ran into one interesting case. TC (Toyota Celica ST185 Rally) reports
60-0 stopping distance (no ABS): 124.708 ft
60-0 stopping distance (ABS): 2326.04 ft

No idea what is going on with the ABS there, will look into it.

EDIT:
There are also a few cars with max power not matching torque curve it seems, which results in incorrect top speed estimation.]]> <![CDATA[Cornering with the CS?]]> https://www.vdrift.net/Forum/showthread.php?tid=2176 Sun, 17 May 2015 22:13:46 -0700 zje]]> https://www.vdrift.net/Forum/showthread.php?tid=2176
I was thrilled to find an aircooled 911 in the game, but am having trouble getting the hang of it.

In particular, if I brake hard when coming up to a corner, the car hooks right and into a spin (with zero steering input). I've found that letting up on the throttle helps get through some corners, but that doesn't seem quite right. Apologies if this was posted anywhere else, but I couldn't find any tips on cornering with the CS.

I'm playing with the keyboard if that helps

Thanks again!]]>
I was thrilled to find an aircooled 911 in the game, but am having trouble getting the hang of it.

In particular, if I brake hard when coming up to a corner, the car hooks right and into a spin (with zero steering input). I've found that letting up on the throttle helps get through some corners, but that doesn't seem quite right. Apologies if this was posted anywhere else, but I couldn't find any tips on cornering with the CS.

I'm playing with the keyboard if that helps

Thanks again!]]>