Super GT models

[shadow explorer]

Greetings everyone

I'm a 3d artist.
Unfortunately my knowledge on racecar engineering is very very limited.

With research and some help I managed to do the following
However the amount of data and diversity on setups for such part's is overwhelming

Thus I joined here to kindly ask for your help.
I would like to model my cars as correctly as possible (at least a plausible scenario)

Here's the first one

2005-2006 supra from Super GT series.


MACHINE SPECS
Machine Name ZENT CERUMO SUPRA
Base Model TOYOTA SUPRA
MACHINE SPECIFICATIONS
Chassis Type JZA80
Length x Width x Height 4,520 mm x 1,910 mm x - mm
Weight over 1,100 kg
Wheelbase 2,550 mm
Track F: 1,600 mm x R: 1,580 mm
Transmission 6-speed sequential Transaxle
Clutch Carbon Triple Plate
Suspension F: Double Wishbone
R: Double Wishbone
Brake F: Ventilated Disk
R: Ventilated Disk
Tire Bridgestone
F: 330/40 R18
R: 330/40 R18
Wheel RAYS
F: 18
R: 18
ENGINE SPECIFICATIONS
Engine Model 3UZ-FE
Configration V8 DOHC 32 valves
Displacement 4,480 cc
Bore & Stroke 93 mm x 95 mm
Air Restrictor 29.6 mm x 2
Maximum Power 500 ps over / 7,500 rpm
Maximum Torque - kg-m over / - rpm
Oil Castrol






the first issue I have is the geometry of the A-arms, I'm unsure if this is a pausible top vew profile
Of course you may notice other issues as well that I'm not aware of

Thanks a lot in advance

[astracrazy]

amazing. you seriously need help? its prob the most detailed on here...

[shadow explorer]

Thanks a lot for the comment.


To be honest I'm not sure how correct\plausible it is...I just researched a lot and kept asking.
I don't even have a car, nor ever driven one in real life...

but I came to a point that I have to confirm my work,since I want a setup that could work in real life as well

I model from pictures thus the parts I can see are fairly accurate
http://fc05.deviantart.net/fs70/f/2012/ ... 51um2g.jpg
http://fc08.deviantart.net/fs71/i/2012/ ... 51uknj.jpg

others like the suspension wishbones,I have no idea how they should be...

for example honda NSX have them shaped symmetrical from the top view like a V
regarding supra the only mounting point I'm almost sure is the far rear one since it is visible from the reference i have...

Here's other cars from the series, that I have in wip state but currently my main focus is on supra

http://farm8.staticflickr.com/7269/7465 ... f4af_b.jpg
http://farm8.staticflickr.com/7134/7465 ... 0147_b.jpg
http://farm9.staticflickr.com/8168/7465 ... 282e_b.jpg
http://farm9.staticflickr.com/8160/7465 ... 3238_b.jpg

[N12ck]

Thanks a lot for the comment.


To be honest I'm not sure how correct\plausible it is...I just researched a lot and kept asking.
I don't even have a car, nor ever driven one in real life...

but I came to a point that I have to confirm my work,since I want a setup that could work in real life as well

I model from pictures thus the parts I can see are fairly accurate
http://fc05.deviantart.net/fs70/f/2012/ ... 51um2g.jpg
http://fc08.deviantart.net/fs71/i/2012/ ... 51uknj.jpg

others like the suspension wishbones,I have no idea how they should be...

for example honda NSX have them shaped symmetrical from the top view like a V
regarding supra the only mounting point I'm almost sure is the far rear one since it is visible from the reference i have...

Here's other cars from the series, that I have in wip state but currently my main focus is on supra

http://farm8.staticflickr.com/7269/7465 ... f4af_b.jpg
http://farm8.staticflickr.com/7134/7465 ... 0147_b.jpg
http://farm9.staticflickr.com/8168/7465 ... 282e_b.jpg
http://farm9.staticflickr.com/8160/7465 ... 3238_b.jpg

you could make a request for dimensions from the company themselves, or visit http://www.the-blueprints.com and once you find out one measurement, you can then use that factor of multiplication between the image size and real size and apply that to the whole car and gain more accurate sizes, maybe not 100% accurate but, more accurate

EDIT: here is the supra GT model I think : http://www.the-blueprints.com/vectordra ... k_iv_jgtc/

[shadow explorer]

Thanks a lot for the reply and the link you shared:)
Very kind of you


However my real issue is the mechanical parts that are not visible:)
notable suspension and later engine.

The visible parts like the exterior are completely under control:)
pictures > blueprints in my case , unless the blueprint have many cutaways and details like those of ships

[shadow explorer]

Here's some progress,
both on outside and inside parts.

I would still really appreciate some feedback\help about the suspension.
I made 2 versions of wishbones,the ones in red are a bit more simplistic for now.

[gato azul]

nice work mate =D> - keep it up

maybe this helps a bit


some more can be found here


IIRC: Racecar Engineering Magazine did run some articles about these cars, in the current one, they have an article about the GT300 Subaru, maybe you want to check on their website for some back issues.

BTW: your second iteration wishbones (while maybe not 100% perfect) look a lot more realistic - good job

[shadow explorer]

Thanks a lot for the comment,and the info you shared, gato azul

I'm glad that the suspension system is looking better
hopefully in the end i will have something that will be very accurate:)

here;s the closest version to the one I'm working:)

[gato azul]

Here two photos, which are maybe helping to get an idea about how, some suspension components could look like.
I'm not saying, "That is, how it has to look !!!!"

Just that manufacturing standards and constrains lead to similar looking components, when these components are made
from similar/the same materials.
If you look at DTM/GT or LMP cars, which use wishbones fabricated out of aero-section shaped steel tubes, you will
find some similarities, how these components look.

This was the reason, that I said, your second iteration wishbones look more realistic.
Overall dimensions, the angle of the tubes to each other etc., will vary (widely) from one application to another, as this
is defined by suspension geometries used etc.
Nevertheless, you will find that the "overall appearance & design Characteristics" are quite similar.

Now, if the GT500 cars in question, use cast/forged or CNC machined wishbones made from Aluminium Alloys, then it may
looks completely different. But if they use fabricated steel components ( which seems likely), then I'm reasonable sure, that the overall appearance is close to the ones shown below.

Good luck !!!! - nice & impressive work nonetheless
(both photos are from DTM car components)

[gato azul]

o.k. just some random photos of Super GT car suspensions, but some are from GT300 cars

Lexus IS350 (GT300 I guess)

[gato azul]

Subaru (GT300), this car is also featured in the current RACECAR ENGINEERING Magazine

[gato azul]

some GT500 stuff (Honda & Nissan)
as you see, all the cars posted, use fabricated steel wishbones. By the look of it, most use simple circle/round shaped tubes
instead of an aerofoil shape, that makes the fabrication a lot easier and is cheaper too.
As the wishbones are not exposed to the direct airflow, it's o.k. - no big deal.
Some DTM/GT cars, use airfoil shaped tubes, for the lower wishbones.
So overall, I hope this helps you to get an overall impression of the general appearance of these components.







I think, you got this one, but in case not Toyota Gt500 Supra

[shadow explorer]

Really thanks a lot for gathering all those pictures
you even managed to find some that I don't have
(33z,NSX) =D>

Other GT500 and GT300 cars will be created,so they are useful as well:)
let's see how i can improve my current model for now...

[shadow explorer]

Here's an update.
http://farm8.staticflickr.com/7278/7644 ... 9fc1_k.jpg
http://farm9.staticflickr.com/8154/7644 ... 659b_k.jpg

[gato azul]

nice work shadow
not wanting to nick pick on your work, just offering an observation to improve the accuracy of your model.
If you see, the last photo I posted from the Toyota, you see, that they use a "knife/blade" type anti roll bar (ARB) arm.
in your model you use a cylindrical arm - just a small detail.
The actual tube/bar runs above the steering rack.
In your model the position of the steering rack seems to be a little bit too high - IMO
In the photo, it looks like that the angle of the steering tie-rod is the same as the top wishbone, which is a typical
setup, to reduce bumpsteer effects.
So if you lower the steering rack a bit, and "mount/draw" the ARB on top of it, I think, you are one step closer to a more
realistic model. In the photo I posted, the actual ARB tube is shown as the light blue lines, called "sway bar"

Here some examples of ARB blades, they are typical used with adjustable ARB's