"GTP Users Leaked Supercar Designs" or "Design Your Own Supercar Thread"

[YSSMAN]

"GTP Users Leaked Supercar Designs" or "Design Your Own Supercar Thread"

So, we're having fun over here. But, as Philly and Toronado have pointed out (and requested), there should be some room for some of us to share some of our dream supercar designs. Of course, it doesn't have to be a supercar. In fact, it can be whatever kind of car you like.

Dream it up, tell us about it! Share your specs, renderings, and all that jazz here.

 

[Eric.]

I heard something about a guy on a video game forum that was going to build a Veyron beater in the next decade. Here are the designer's comments:

"Who says i'm only using one? If you really want to know, the main reason i bought two spares is because i'm planning on casting a v-12 block containing two of the bmw 6-cylinder engines.

I relent: here are some stats.
Type: 90degree V12
Displacement: 5.4L
5 valves/cylinder DOHC
Direct Injection
2 Twinchargers (VGT and Centrifugal superchargers)
Variable Displacement System (once i figure out how to program it)
Dry sump lubrication
Transmission: Unknown (i'm hoping dual-clutch)
Figures such as hp, torque, etc. are unknown as i haven't built it yet.

This is what i have as of now. I am working on schematics for the aforementioned electric motor assist, which would involve the motors getting the car off the line and letting the engine do the rest... i'm also thinking of using the motors for any speed under 80 mph.

Questions and/or suggestions?

 

[YSSMAN]

It seems like my ideas are usually a bit "bland" by comparison to others:

- Front engined
- Rear wheel drive
- 7.0L Chevrolet small-block V8 (Give or take 550 BHP)
- Tremmec T56 gearbox
- Ford 9" rear end
- Dual wishbones up front, independent rear suspension
- All-aluminum chassis, weight target of 2800 lbs
- Roadster body design, two seater

Basically, a smaller, lighter, more-nimble Corvette. Target price would be $100K, and not much else. Sounds like a Callaway, really. Oh well...

 

[Tornado]

Thanks. I was too lazy to actually do it. I've actually been thinking about this for a while, but I have to check out some old schematics that I drew up a few years ago (not to mention my GT3 save file, where I hacked cars to test said schematics. Yes, I am frequently bored.).

 

[High-Test]

G'ah.

I'm a pusheaded cretin from the stone ages.

My supercar parameters:

(The prototype is tentatively known as the "XP-26A")

Front engine, rear wheel drive, two door coupé.
Seating for two
Six speed manual transmission
disc brakes
Large, rather deep offset wire wheels
A 3.08 final drive ratio (I pulled the number out my bum, somewhere between 2.90 and 3.11 ought to work)
2.6, maybe 3.0 liter cast aluminum naturally aspirated single overhead cam inline six, electronically fuel injected, putting out somewhere between 250 and 340 horsepower
Two somewhat large round headlamps, one at each front corner of the car.
Taillights, amber turn signals a must, no USDM red nonsense
A sexy, curvaceous body filling the gap in space between aforementioned light sources that recalls things along the lines of the Ferrari 250SWB, Lamborghini 350GT, and Abarth 205 (about the same proportions as the 250SWB)

Do you see what I did thar?

No. You don't. See, the chassis will be a carbon fiber monocoque, the cooling fans and water pump electrically driven, battery and transmission mounted in the rear for better weight distribution. Independent suspension all around, of course, and the differential is most definitely limited slip. The two seats will be light as Brides, but upholstered and shaped to look like seats from the days of far before the author's time. Probably black textured and punctured vinyl. Dual exhaust, crafted to be as unrestrictive as possible yet have enough backpressure to not rob the car of torque. The car will have a fuel cell from the factory, and it shall be balanced and track tested so as to have handling characteristics as neutral as possible.

And if we finally come to realize that there's no way in sam hell a completely frankensteined M103 is going to fit under the hood given the car's lines and proportions, we will go to our other contingency plan, which is in fact to release to the public the XP-26A's less well-mannered cousin.

The XP-26A2 mounts a dual overhead cam, 32 valve 90 degree 5.0 liter aluminum V8.

The XP-26B is merely a shooting brake version of either of the above vehicle configurations.

Can't think of a name or a logo. I know mine will have powered by mercedes painted on the radiator, faintly visible through the grille.

 

[Venom800tt]

I have a whole heap of supercar designs, some being fairly sane, while others are in the WTF area of sanity...
Ok, I shall start with the V350T, which is pretty much the most insane of all of my cars. I will probably make separate posts for each car, since the specs are kinda long lol...

(Specs are still somewhat of a WIP...)

Venom 350T Turbine Powered Road Car


Specifications


Engine:

Type: Gas Turbine
Model: General Electric T700-T6A
Peak Horsepower Output: 2000 hp @ 24,000 rpm
Rated Torque Output: 380 lb/ft @ 24,000 rpm
Peak Torque: 700 lb/ft @ 1,000 rpm (reduction gearbox output shaft rpm)
Length: 48.2" (1.22m)
Diameter: 25" (.635m)
Weight: 485 lbs (220Kg)


Fuel:
Diesel or Jet-A, 40 gallons/280 lbs (151.41L/127Kg)



Transmission/Drivetrain:

6 speed paddle operated semi-automatic with reverse
Front and rear limited slip differentials
Variable, lockable center differential
All wheel drive
Variable torque bias


Chassis:

Carbon Fiber semi-monocoque with key structural elements made of aluminum alloy and steel
Chrome moly steel tube roll cage


Dimensions:

Weight: 1980 lbs (898.11 Kg)
Length: 196" (4.98m)
Width: 80" (2.03m)
Height: 40" (1.016m)
Wheelbase: 116" (2.95m)
Track: 60" (1.52m) Front, 50" (1.27m) Rear
Ground Clearance: 2"-5" (50.8-127mm)


Suspension:

Type: Carbon composite double A-arm, front and rear with pushrod activated inboard shock/spring units.
Hydraulic ground clearance adjustability and active suspension system using MR* shocks.


Steering:

Rack & Pinion, variable electric power assist
4 wheel steering


Brakes:

Disks: 15" (381mm) carbon-ceramic brake disks front and rear
Calipers: Brembo 8 piston monoblock calipers front and rear
ABS* system
Driver controlled brake force bias


Wheels:

Wheels: 18" front, 20" rear magnesium alloy rims


Tires:

Specially designed high speed radial tires based off of the Michelin Pilot Sport
295/35ZR-18 Front, 355/30ZR-20 Rear


Aerodynamics:

Removable electronically adjustable rear wing
4 removable front canards
Front and rear diffusers with downforce generating venturi tunnels
Optional closed rear fenders
Optional aerodynamic carbon fiber front wheel covers


Safety:

Chrome moly steel tube roll cage
6 point racing harness
HANS* restraint system
ABS*
Carbon Fiber cockpit “tub”
Racing style fuel cell
Infrared night vision camera system
Heads-up display system
Collision avoidance radar system


Estimated Performance:

0-60 mph: 3 seconds
0-100 mph: 6 seconds
Top Speed: 350 mph, Mach .46 (limited to 260 mph on street tires)
Braking, 60-0mph: under 100 ft


Glossary:
MR = Magnetorheological Fluid
ABS = Anti-Lock Braking System
HANS = Head And Neck Support device

 

[exigeracer]

You do realize that there have been several car drawing/design threads around for years on GTP? I suppose it's alright having another one that is more in the spotlight in Cars in General.

I'm in Industrial Design, but haven't sketched out a car in months. It just isn't a realistic goal anymore.

 

[LongbowX]

That's amazing Venom800tt. Not sure if I would drive it on the road though. XD I looked it up on Deviantart since you linked to it. Hahaha....MC12. Well, you did paint it similar colours. I actually think it looks more like the Toyota GT-One. But...it is it's own design for sure. Not really sure if it could go 350mph though. It looks like it might have a lot of drag with the wing and such. But then again, 2000 horsepower can accomplish a lot.

And I wish I could draw...better. Maybe I'll give it a shot sometime.

 

[Venom800tt]

Oh, I forgot to mention the rear wing is fully removable. With it on, I figure a rough estimate would be around 270 mph or so max, due to the drag (even though it is fully adjustable). Front diveplanes are also removable. I might post a car that is pretty much the complete opposite to this sophisticated fighter jet on wheels in a bit...

 

[Jim Prower]

I'll think something up when I have time and am not sick.

 

[MinoltaMan89]

Looks like a Zonda with TVR Speed 12 headlights and an Escudo rear wing.

EDIT: I see a bit of 908 and Toyota GT1 in there too.

 

[mPWRD]

Venom - I have a question: where on earth are you going to find a "6 speed paddle operated semi-automatic" that can handle 2000 hp?

 

[High-Test]

With the exhaust venting upward out of the turbine, is a wing that big necessary?

 

[Venom800tt]

Venom - I have a question: where on earth are you going to find a "6 speed paddle operated semi-automatic" that can handle 2000 hp?

Meh, I am sure someone would be willing to make one, given enough money
Plus, peak torque is only around 700 lb-ft, so I am sure it is completely possible. Heck, of Rolls Royce can develop a clutch/transmission that can handle 20,000 hp in the F-35B Lighting II fighter, then someone can make me a 6 speed paddle shifted transmission for "only" 2,000 hp

With the exhaust venting upward out of the turbine, is a wing that big necessary?

Exhaust velocity of turboshaft engines is fairly low, so any downforce generated by the exhaust would be fairly small. The wing is mainly for track use, and is both adjustable and removable. I figure even without the wing and diveplanes, the underbody alone should generate enough downforce for most people though. Though, without any kind of wind tunnel testing I am no more than a "picture-aerodynamicist", so I kinda just go by what should work, based off of what I know of other cars and even aircraft.

 

[opendriver]

- Front engined, rear wheel drive
- 6.7L Chevrolet based small-block V8, lightened aluminum, maybe 750-900HP
- Transmission unknown
- Quick change rear end, probably Winters
- Dual wishbones up front, solid rear suspension
- All steel tube chassis,with Titanium nuts and bolts throughout, rough estimate of less than 2000 pounds
- Single seater:

But without the huge wing on top

 

[mPWRD]

Meh, I am sure someone would be willing to make one, given enough money Plus, peak torque is only around 700 lb-ft, so I am sure it is completely possible. Heck, of Rolls Royce can develop a clutch/transmission that can handle 20,000 hp in the F-35C Lighting II fighter, then someone can make me a 6 speed paddle shifted transmission for "only" 2,000 hp

So it's possible. But I am going to ask you the same question that I have been asked on my thread: where exactly to you plan to get "enough money"?

 

[Rotary Junkie]

So it's possible. But I am going to ask you the same question that I have been asked on my thread: where exactly to you plan to get "enough money"?

This is purely hypothetical, I believe you've missed that

 

[Venom800tt]

This is purely hypothetical, I believe you've missed that

Indeed
But as a rough estimate of how much it would cost to build one V350T (not including designing and paying people to help), I figure it would cost around $2 million USD or so plus or minus a few hundred thousand

Now, I do have other, more realistic designs, one of which I will post now...
The Venom Raptor, which is pretty much the opposite of the high tech, land bound fighter previously posted:



Venom Raptor



Specs:


Base Engine:

Type: Naturally aspirated OHV GM LS1
Displacement: 5.7L
Number of valves: 16
Output: 350 BHP, 365 Ft-Lbs

Optional Engine #1:

Type: Naturally aspirated OHV GM LS2
Displacement: 6.0L
Number of valves: 16
Output: 400 BHP, 400 Ft-Lbs

Optional Engine #2:

Type: Naturally aspirated OHV GM LS7
Displacement: 7L
Number of valves: 24
Output: 505 BHP @ 6300 RPM, 470 Ft-Lbs @ 4800 RPM


Transmission:

Rear mounted 6-speed manual with reverse


Drive:

Front-mid engined, rear wheel drive


Chassis:

Steel tube frame with carbon fiber composite body panels


Dimensions:

Weight: 1,200 Lbs (544 kg)
Length: 158 In.
Width: 77 In.
Height: 43 In.
Wheelbase: 110 In.
Track: 52 In. front, 52 In. rear
Ground Clearance: 5 In.


Suspension:

Type: Carbon composite double A-arm, front and rear with coilover shock units.


Brakes:

Disks: 13 In. carbon-ceramic brake disks front, 12 In. carbon-ceramic brake disks rear
Calipers: Brembo 6 piston steel monoblock calipers front and rear
Driver controlled brake bias


Wheels:

Wheels: 18x8 In. front, 20x12 In. rear Forged Aluminum alloy, or Forged Magnesium alloy, or Forged Magnesium alloy spokes and carbon fiber outer rims


Tires:

Front: 205/35ZR18
Rear: 305/30ZR20

 

[Eric.]

How about an open cockpit w/speedster style windshield on that last one, Viper? Loving that first one, by the way. Could stand to have a more realistic engine choice though.

 

[Jim Prower]

Okay, stole the spec structure from Venom800tt. However, I don't think that really matters. You don't mind, do ya?

I've decided that, instead of chasing Bugattis or McLarens, I'd rather take inspiration from something of an entirely different Breed: the Ariel Atom.

and while the Atom is a great car...It's the automotive equivalent of a Naked Bike. Everything's Exposed. That makes me wonder what a Faired version of an Atom would be like...and I came up with this.

Lobo TT-R4

Specs:

Base Engine Option #1:

Type: Honda K20Z4
Displacement: 1,998cc
Number of valves: 16
Output: 245 BHP, 150 Ft-Lbs (Opt. Supercharger to 300HP)

Base Engine Option #2:

Type: Toyota 2ZZ-GE Supercharged (Exige 240)
Displacement: 1,796cc
Number of valves: 16
Output: 240 BHP, 150 ft-lb (280HP engine available)

Base Engine Option #3:

Type: Suzuki Hayabusa
Displacement: 1,340cc
Number of valves: 16
Output: 197 BHP, 102.3 Ft-Lbs (turbo option?)

Base Engine Option #4:

Type: Kawasaki ZZR1400 (ZX-14)
Displacement: 1,352cc
Number of valves: 16
Output: 190? BHP, 113.5Ft-Lbs (Kawasaki only specifies their torque rating, Turbo option as well)

Optional Engine:

Type: RS Performance RST-V8 (Requires Aerodynamics Package)
Displacement: 2400cc
Number of valves: 40
Output: 500+ BHP, 300 Ft-Lbs

Transmission:

6-speed Sequential Manual (manual clutch) ((Preserves the feel of a Motorcycle))

Drive layout:

rear-Mid engine, rear wheel drive, transverse layout

Chassis:

Carbon Fibre Composite Monocoque

Dimensions:

Target Weight: < 1,100lb (500kg)
All others: Use Ariel Atom as rough guide.

Suspension:

Type: Carbon composite double unequal-length wishbone, front and rear with remote-mount coilover shock units.

Brakes:

Pre-engineered Willwood Dynalite, or Alcon track brakes, 4-piston calipers.

Wheels:

Wheels: Enkei RPF1 15x7, 35 offset front, 41 offset rear
Option: 15x7 front, 16x8 rear, Magnesium or Aluminum

Tires:

Standard: 195/50R15 Dunlop Direzza
Option: 195/50R15 front - 225/45 R16 Yokohana Advan A048 Front/rear (also Direzza option)

Options:
Engine upgrade (requires optional wheels)
500HP V8 (requires optional wheels and aerodynamic package)
Aerodynamics Package: includes removable front splitter and rear wing
4-2-1 exhaust with Catalytic Converter delete (track only)
Full-adjustable suspension
FIA-approved Race-spec safety package
Long wheelbase with second seat behind driver's
Special paint with white or black number squares

Standard features:
Single, center-mounted seat
Superbike-inspired styling (rough sketch drawn, will be scanned when I have the chance)
Side-mounted Radiators with Venturi Tunnels beneath
Rear aero diffuser
4-point harness
Padded Carbon Fibre race seat (adjustable fore/aft)
4-into-2-into-1-into-2 exhaust with Catalytic Converter
DOT Legal: Headlights w/ low/high beam, Turn signals, and rear license plate bracket (front bracket applied as required)
stock ride height can get over a sleeping policeman (speed bump) for homlogation on Top Gear Test Track

Any other ideas on engines?

 

[Eric.]

I'm just wondering why you'd have so many similar engines available apart from being choosy on the brand. The ZX-14 makes over 200hp, I believe, which is damn scary.
And I hadn't noticed how the K20 matches and even beats the supercharged 2ZZ...

How about an entry level one with a Suzuki 750cc powerplant? Or (purely for the sound, this one) use one of the V-twin superbike engines.

 

[Jim Prower]

Well, that's the thing. I'm trying to pick ONE to use. Don't know which.

The Specs on the Honda are taken from the Ariel Atom. The Toyota's specs are Lotus Exige. (although the hi-power spec is a rough estimate of what may be capable.) The RST...well, that's the Levante...and whatever else they stuff that into.

The Suzuki 750 on a base-base model might not be a bad idea. I think at this point it's either the Kawasaki or Honda motor. I guess it'd go down to the engine's PWRs, and how much more power the Kawasaki has left..although...

 

[C-ZETA]

I could think of several supercars, but I'd personally like a new Cizeta style supercar again.

Mago F86

Type: 2 Ferrari 430 engines
Displacement: 8616cc
Number of valves: 16
Output: 966 bhp, 599 lb ft

Transmission: 5-speed semi-automatic

Drive layout: Mid-engine, rear-wheel drive, transverse layout

Chassis: Carbon-fibre monocoque with aluminum sub-chassis

Target weight: 1100kg

Suspension: Double wishbone with pushrods, front and rear

Brakes: Carbon-fibre discs front and rear, made by engineered by Brembo

Wheels: O.Z. Superleggera III, 15in rims

Tires: Pirelli PZero Rosso

Options:
'S' sport suspension
'Italiano che corre le bande' (Italian racing stripes)
Traction/stability control options
Optional 'Vipera' spoiler
Special 'Corsa' option
Downgrade on exhaust for more comfortable driving
For added braking power, special 'Visita' brakes
Limited edition 'Grande' suspension

Standard features:
3 seats, including one center-mounted
Aerodynamic body kit
Rear-mounted radiators with Venturi tunnels
Racing intercooler
Rollbars in rear for increase in rigidity
Carbon-fibre racing seats
Special 'Le Mans' exhaust
DOT Legal:
Working headlights and taillights, indicators and license plate brackets front and rear
Able to clear speed bumps with default ride height

 

[exigeracer]

After my last statement of not having draw an auto for months, I decided to throw down the ink for a car drawing again. Nothing special, but neat to see how my regular design drawing has affected my car drawing.

 

[Venari]

Do that, but think 60s. Think curves. Think round detailing. See what you come up with.

 

[Eric.]

Well, that's the thing. I'm trying to pick ONE to use. Don't know which.

The Specs on the Honda are taken from the Ariel Atom. The Toyota's specs are Lotus Exige. (although the hi-power spec is a rough estimate of what may be capable.) The RST...well, that's the Levante...and whatever else they stuff that into.

The Suzuki 750 on a base-base model might not be a bad idea. I think at this point it's either the Kawasaki or Honda motor. I guess it'd go down to the engine's PWRs, and how much more power the Kawasaki has left..although...

I would use these models:

Base - Suzuki 750cc (these are around 130hp or a little more I think - 600s make 120ish)
R - Honda K20Z3 (Civic Si - would be cheaper than getting Type-R motors imported) ~230hp
RS - Supercharged K20Z3 (300hp+ after removal of drive-by-wire)
XXX - Hayabusa V8 (quoted at 372hp)
XXXt - Turbo it. Surely 500-600hp is possible there.

 

[Jim Prower]

Well...building my own Hayabusa V8 is a bit redundant when the RS Performance unit is ready and available at 500HP, (with some sort of supercharging: if aspirated, it might make around that 372) and already successfully used in two major applications. (Caterham Levante/Atom 500) Keep in mind that I'm approaching this from the view of an OEM rather than a tuner.

I suppose that either of the K20 engines would work, main thing would be how the engines show up in final tune, and, since I'm taking the OEM approach, it might be easy to order the engines direct from Honda.

Mind you, I'll likely never build this, but I have some experience in manufacturing...not a whole lot, but some. It'd depend on the vendor.

 

[Eric.]

I got the power quote on the V8 from it being used in the Radical SR8.

 

[Jim Prower]

Heh. I guess that, In that case, it'd depend on two things:

1: Can Radical's HBV8 take enough boost for 500 bhp, and still be reliable enough to sell publicly?
2: Could they compete on price with RS performance? Will they even sell it to me?

Manufacturing Capacity probably isn't a huge problem: I'm probably selling less than 1000 a year and less than 50 a year with the V8. Hell, I could do it with the guys in the shop I currently work for...at least, the number of guys: about 10 or 12.

I've finally settled on a setup for the base engine: the K20Z3, perhaps with Spoon or Mugen parts on the NA model. Target power 250-275, with a higher rev-band. Higher-spec would likely be a turbo with around 330 HP. Again, the idea would be to raise the power and the rev-band above that of the Atom, in an attempt to create that Superbike/Naked Bike correlation between the two cars. That way, they not only compete, but complement, one another.

 

[Eric.]

You'd be better to go with the RSX Type-S spec for the K20 then. That would be the K20A2. Reason being, the K20Z3 has drive by wire throttle tied up into the ECU. For that reason, there is no full tuning solution for it and thus the highest NA powered one that I know of is running 250hp or so. With a turbo they can run around 280hp (mostly) reliably. Again, this is limited from the inability to make a fully custom tune. Even the first Si show cars at SEMA weren't using the Z3, and they had around 400hp.

And if you ever start building one of these, tell me. I'm only four hours away!