Gav

Will this be achieved by a road car in the future??? With the veyron claiming 252 it got me thinking will the 300 mph barrier be broken???

Your thoughts???

Gav..

chiark

Tyres.

willy

If not tyres.. emissions and noise regs will stop it ever happening.


*****

hawkthescoobslayer

and probably a piece of road long enough to do it on??

Dracoro

Weight, aerodynamics, tyres, power, legal issues (emissions etc.) all need to be addressed. The cost would be exponentially high. No doubt it is achieveable but there's little point in it all.

Anyway, I've been listening to PSLewis and New Labia and have recently discovered that speed kills doesn't it Maybe you spontaniously combust when to exceed the speed limit?

billythekid

The problem is power required to overcome the air resistance.

The Maka F1 was 600bhp, and could do 240mph.

The Bug is 1000bhp yet only manages to hit 250mph.

To see what it takes to hit 300mph you should have a search for the salt flat racers in the USA, they are either very aerodynamic and medium power or very high power not so aerodynamic.

The other problem is what happens if you have a blow out at this sort of speed, often the car will take off or tumble for 1/2 a mile or so. I think insurance could be a problem!

ThrustSSC

Been there, done that (we did get 763mph after all!).

Yes, 300mph in a road car is possible. It'll be battles of engineers vs. customers (who still want comfort, ICE, etc.) and engineers vs. environmentalists.

The real question, I humbly suggest, is not "can it be done" but "will there be a business case for such a vehicle". If there is a business case, it will be based on a very small number of incredibly expensive cars, IMHO.

ThrustSSC

I disagree. Goodyear will happily sell you tyres designed for that speed - they are, after all, currently exclusive suppliers to the 400mph market! To make the tyres road-legal they'd have to change the tread design somewhat, but I suggest there is scope to do so in a tyre originally designed for 400mph.

Dazza's-STi

yep with about 2400 HP with my reconing... don't forget wind ristance is squared with speed... double the speed, quadruple the resistance...!
huge power is needed it eek out a few after 190mph...
look up the PFF Porker world record attempt and what it took to get it to break the Mac's 242mph...

ThrustSSC

Dazza, you're assuming an unchanged vehicle profile. I'm assuming a profile optimised towards achieving 300mph - but with inevitable compromises on style, space, comfort, etc. Hence the limited sales potential!

A few interesting but relevant figures from the LSR world:

1000hp Sunbeam (1927): 900bhp, 203mph
Golden Arrow (1929): 930bhp, 231mph

Extrapolating on a speed-squared basis, 300mph in Segrave's car would require 1568bhp. You can probably deduct a little for modern technology. For example, Golden Arrow had:

1) Open cockpit
2) Open front wheels
3) Long body with significan form drag
4) Aerodynamics of relatively limited optimisation

So a 1000bhp, 300bhp road car is perhaps not infeasible in the foreseeable future?

vulnax999

iTrader: (7)

Probably a Skyline then

Although that Calder supra is quick .. see last years Scooby shootout results, I think it wat 975 bhp and got over 200 ( 202 ? ) in the 1.25 mile track ...!

Gav

I knew it would be reachable but was wondering more towards would it ever happen?? I never thought of emmissions etc etc to be honest!!

ThrustSSc, what was your role in the project? Dont say driver or i would seriously envy you as that would be the coolest thing possible

Cheers for all your input guy's

Gav..

screwdriver

300 MPH in a road going car? Well I guess you could have a quiet word with the DVLA, Tax and MoT ThrustII (was it?) and there you are.

Question is: is there any public road on earth where you might conceivably exploit this level of performance? How long and how straight (never mind how flat) would the road have to be? Could you even keep such a vehicle on a narrow ribbon of tarmac at that speed? Things would get pretty hairy pretty quickly I'd guess!

Screwd.

Brendan Hughes

In a combination of all of the above, I really don't see the point in it, and don't know if manufacturers will either.

Which "road" would you use it on?
How much would it cost - and as a "production" car you'd have to build at least, what, 20, 50, 100 of them?
Who would buy it at a price that it wouldn't make (too much of) a loss?
And who would drive it? If I was the government I wouldn't let anyone except those with a fast jet qualification drive it on a public road!

They'd be better off spending money to make cars more interesting to drive between 0-100mph, rather than wasting it on a useless top speed exercise.

Andy M3

See how the Koenigsegg CCR spec's up to achieve 140. Low drag, low static kerb weight. A reasonable amount of power. I think it would take more than a NOS bottle to ket it to 300mph. Although the 100mm ground clearence means it should stay on the ground nicely !


Performance

Acceleration: 0-100 km/h (0–62 mph) 3.2 seconds
Top speed: 395+ km/h (242+ mph)
Standing quartermile: 9 seconds, end speed 235 km/h (146 mph)
Braking distance: 31 m (100–0 km/h)
Lateral g-force: 1.3 g
Fuel consumption: Highway travel: 13 l/100 km
Combined: 17 l/100 km

Body

Two-door, two-seater with removable hardtop stowable under the front boot lid. The body is made of preimpregnated carbonfibre/kevlar and lightweight hard-foam sandwich reinforcements.

Dimensions

Ground clearance: 100 mm (3.9 inch)
Fuel capacity: 80 litres (17.6 gallons)
Luggage compartment: 120 litres (26.4 gallons)
Dry weight: 1180 kg

Areodynamics

Cd. 0.297. Frontal area 1.825 m2. Completely flat underside of chassis. Venturi tunnels at the rear of chassis/body.

Chassis

Semi monocoque made of preimpregnated carbonfibre and with honeycomb reinforcements for added stiffness.
Front and rear suspension: Double wishbones, adjustable VPS custom racing shock absorbers, pushrod operated. Anti-roll bar. Electronically adjustable ride height.
Front brakes: Ventilated discs Ø 362 mm, 32 mm wide. 6 piston light alloy calipers. Power assisted. Koenigsegg Advanced Control system. Rear brakes: Ventilated discs Ø 362 mm, 32 mm wide. 6 piston light alloy calipers. Power assisted. Koenigsegg Advanced Control system.

Wheels

Koenigsegg magnesium alloy wheels with centre locking.
Front: 19” x 9.5”
Rear: 20” x 12.5”
Tyres

Michelin Pilot Sport 2. Unidirectional with asymmetric tread pattern.
Front: 255/35–19” (Y)
Rear: 335/30–20” (Y)

Steering

Rack and pinion power assisted steering. 2.7 turns lock to lock. Turning circle: 11 metres.

Engine

Type: V8 cast aluminium, 4 valves per cylinder, double overhead camshafts. Cam cover of carbonfibre.
Displacement: 4.700 cm3.
Compression: 8.6:1
Weight: 215 kg
Lubrication system: Dry sump with unique oil spray piston cooling. Oil cooler.
Oil: SAE 5 W/30 fully synthetic racing.
Oil tank capacity: 12 litres (2.64 gallons)
Induction system: Sequential, multipoint fuel injection. Lysholm twin-screw supercharger with 1.2 bar boost pressure. Intercooler.
Fuel: 98 RON unleaded.
Ignition system: Direct coil on plug. Transistorised.
Power output: 806 bhp at 6.900 rpm.
Maximum torque: 920 Nm (678 ftlb) at 5.700 rpm.
Maximum rpm: 7.600 rpm.

Transmission

Specially developed 6-speed gearbox by Cima. Incorporated internal oil pump and oil cooler. Torque sensitive, limited slip differential.
Clutch: Dual Plate, organic or cintered Ø 215 mm (8.46 inch). Oil-cooled and electronically operated.

Equipment

In standard mode the car is very well equipped with many items that competitors have as options. Many customers, however, want to further equip the car. Therefore we can offer a list of customer options which should fulfil every demand.

Standard equipment

_ Detachable roof panel
_ Climate control
_ Electric rear view mirrors
_ Leather interior
_ Central locking
_ Electrical windows
_ Alarm with immobilizer
_ Toolkit
_ Driver side airbag
_ Power steering
_ Hydraulic ride height control
_ Servo assisted brakes
_ ABS
_ Traction control
_ Stereo with CD-player
_ Tyre pressure sensors
_ Car cover
_ Exhaust system in titanium

Customer options

_ Parking sensors
_ GPS navigation and/or tracking system
_ Telephone system
_ Rearview camera
_Aluminium rear light casings
_4-point safety belts
_ Sequential gearbox
_ Tailor-made suitcases
_ Custom colour leather interior
_ Custom paint colour
_ Additional noise insulation
_ Carbonfibre rear twin fin wing
_ Carbonfiber front splitter
_ Ø 378 mm brake discs, front


Koenigsegg reserves the right to change or amend this information without notice.

hawkthescoobslayer

impressive figures although I wish I had 100mm ground clearance

only 80mm for me and at times it sucks.

Dazza your right huge power is needed to go past 190mph but OMG is it worth it

Hawk

SPEN555

Why aim for 300mph it's a crappy odd number.

Aim for 400mph as the tyres are available according to above.

You could jump the english channel at that speed and give the fingers to the ferries and channel tunnel.

Jap2Scrap

Think you'll find 300 is an even number mate

zoog

I m sure A Lexus Soarer can easily make 300

gso

Vauxhall Novas can reach 300mph cant they? They're very light cars you know!

Brendan Hughes

Just saw the Top Gear last night on BBC prime where they attempt the fastest caravan record - by dropping it from a crane

As for the number, most people these days work in metric, so expect 500km/h as a nice even number.

Clett

How about modifying this one? It's a road legal VW and has already been shown to be capable of 318 mph on public roads!









Oh, wait a minute, you were talking about mph? Sorry, I meant 318 mpg! Still, with a CD of only 0.16 wouldn't be a too bad shape to start from for a 300mph attempt.

Brendan Hughes

I can't work it out, how do you see behind you in that thing? CCTV?

Clett

Yup! One TFT screen each side of the dash. If you think that's **** though, the headlights are LEDs!

I still want one though....

billythekid

318mph?? Who said that...?

That car is the only car capable of doing 100km on 1L of fuel (actually about 0.9L), it was driven by Ferdinand Piech from the factory in Wolfsburg to Hamburg.

It does do 317 MPG... not MPH..

billythekid

Ah, just read the bottom of your post <SLAP>

Carl2

It didn't work for Mercedes

http://www.mulsannescorner.com/CLRflip1.jpg

Gary C

Anyone knows that a Mitsi can do everything so it must be programmed to do 300

ThrustSSC

I wish, Gav The most I got that car up to was double-figures behind my truck! Dead Dog was the only person who ever drove her. The rest of us in the team would just sit in it and imagine

I looked after the satellite comms (no phones in the desert!), ran the hugely successful web site http://www.thrustssc.com (we ran it ourselves from the desert, and this is what I am best known for), drove the telescopic-boom handler (part of the emergency rescue equipment), drove the HGVs, etc.

We should have a ScoobyNet visit to her in Coventry - would be fun.

camk

Roads need to be changed dratically too I'd imagine.