ilPistone.com

In 1997 the 1100cc Clubsport was launched, two years later the 1300cc Prosport, then the 1500cc SR3 and the SR3 Turbo, and finally this year the SR4.

But just when you thought that Radical couldn?t get any more extreme; we go and do it. Enter the SR8, powered by the all-new RPA 2.6-litre V8 motor manufactured in-house by Radical?s engine company Powertec Engineering.

Run on the dyno for the first time this week, the RPA ? Radical Powertec Series A - put out an impressive 325bhp at 9,000rpm, with 190 ft lbs of torque at 7,000rpm. Powertec boss, Ted Hurrell, is very confident that his target of 350bhp at 10,000rpm will easily be surpassed.

Hear the RPA V8 starting | Hear the RPA V8 running (audio files are MP3 format)

The SR8, which weighs in at under 600kgms, is based on the hugely successful SR3 Turbo spaceframe chassis and suspension, but with an all new aerodynamic package.

A new integral front undertray venturi, crashbox and side vents gives increased downforce at the front of the car, while a revised airbox layout at the rear gives improved air flow to the new high downforce bi-plane rear wing.

A new six-speed sequential transaxle has been jointly developed by Powertec Engineering and Quaife. The transverse gearbox incorporates a reverse gear and the Quaife, torque based limited slip differential.

Many of the car?s new features such as 280mm floating discs, 8½? wide front and 10½? wide rear BBS wheels fitted with specially developed Dunlop tyres, have been proven on the SR3 Turbo.

View the full specification of the SR8 here

Radical are also announcing a six round, 12 race series for SR8 cars, to be called the Powertec Cup. Each round will comprise two 50-minute races for two driver teams. Four rounds will be held overseas, provisionally at Spa, Nürburgring, Dijon and Anderstorp, with two in the UK at Silverstone GP and the Radical Cadwell Park festival.

Contact: Mick Hyde for more information on:
Tel No: 01733 331616
Email: mick@radicalsportscars.com

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Vai seth, sbava pure

Il V8 "in action"

http://www.radicalmotorsport.com/news_folder/v8_sheruns/00004.MP3

Il V8 "starting"

http://www.radicalmotorsport.com/news_folder/v8_sheruns/00002.MP3

Le specifiche tecniche

Engine:
72° V8 cylinder 2.6-litre
32 valve quad cam Max. Power:  350bhp @ 10,000 rpm
Max. Torque: 200 ft lbs @7,000 rpm
Bore: 81mm
Stroke:  63mm  
Compression Ratio: 11.0:1
Dry weight: 95kg

Steel flat-plane crankshaft
Twin counter-rotating balance shafts
Twin pump lubrication system
Quad scavenge pump dry sump system
Rotary vane coolant pump
Pre-engage starter motor
Belt-driven 45amp alternator
AP racing clutch

Transaxle:
Six-speed constant mesh
Torque-biased LSD
Integral oil cooling pump
Pressure fed lubrication system

Sequential shift 1 forward, 5 Back
Gear ratios  
1st  2.615
2nd  1.937
3rd  1.526
4th  1.285
5th  1.136
6th 1.043  
Overall reduction ratio 3.400:1 to 5.670:1
Reverse gear ratio  3.000:1
Dry weight:  36.3kg  

Chassis:
Powered-coated steel spaceframe construction with integral FIA-approved safety cage and power-coated stressed aluminium panels. Available in right or left hand drive.
Foam-filled side impact pods
Aluminium honeycomb front crash box
54-litre aluminium foam-filled fuel tank

Suspension:
Front and rear patented ?Nik? suspension system. Double wishbone with fully floating, single adjustable coil-over dampers, and ?Nik? anti-roll system.

Optional Radical triple-adjustable shock absorbers.

Brakes:
Four-pot Radical calipers front and rear, 260mm dia. vented discs front and rear
Optional 280mm dia. floating vented discs front and rear

Bodywork:
Removable lightweight self-coloured glass-fibre nose and engine cover with integral cooling grilles and flush-mounted release clips
Side pods with integral air vents, cooling ducts and foam filled crash structure
Cockpit surround and roll cage fairing
Carbon-fibre wind deflector
Front splitter with integral undertray, venturi and water radiator
Full width rear wing ? single or optional bi-plane
Front dive planes
Wheel arch louvres
Twin Le Mans-style driving mirrors
Front brake cooling ducts
Optional twin headlights and triple rear lights

Cockpit:
Adjustable moulded driver/passenger seat
Six-point race harness
Headrests
Adjustable pedal box
Optional quick-release steering wheel
Sequential gear lever
Reverse gear engagement lever

Instrumentation:
Wrap-around carbon-composite dashboard with integral rev counter.
Radical instrument panel ? incorporating super-bright LED rev counter, shift lights, high-intensity LCD display of engine parameters and speed, plus warning lights and maximum engine revs recall button.

Optional steering wheel-mounted dashboard with lap timer and data logger
Optional dashboard-mounted brake bias adjuster

Wheels & Tyres:
Cast alloy centre-lock 7? × 15? front and 8? × 16? rear
Optional BBS forged centre, three-piece, centre-lock
8½? × 15? front, 10½? × 16? rear slicks and wets

Dimensions & Weight
Width  1800mm (5? 11?)
Length  4050mm (13? 3?)
Ground Clearance  50mm
Weight 600kg

[size=12]325cv x 600 Kg[/size]

mmmmmmmmmmmmm sembrerebbe una bella bestiolina , i 350 Hp a 10.000 rpm mi attizzano assai.

Citazione di: alura il Ottobre 06, 2004, 17:07:49
[size=12]325cv x 600 Kg[/size]

ahia e' diventata piu' pesante anche lei?

ma e' una mania che sta dilagando anche tra le supersportive

Citazione di: Cizu il Ottobre 06, 2004, 17:09:58
ahia e' diventata piu' pesante anche lei?

ma e' una mania che sta dilagando anche tra le supersportive

E beh... il v8 mica e' fatto di aria... 150 kg x 4 cilindri in piu' (che poi mi sembra di aver capito che e' il suzuki 1300 radoppiato) ci possono stare...  

Chissa quando ci mettono il turbo... 600cv x 600kg  

usteria questa qui turbinizzata deve fare leggermente paura. la faranno ? siiii che la faranno in radikal sono pazzi

questa è l'arma definitiva, non ce n'è per nessuno!

Citazione di: seth1974 il Ottobre 06, 2004, 17:14:07
usteria questa qui turbinizzata deve fare leggermente paura. la faranno ? siiii che la faranno in radikal sono pazzi

Cazzo seth... a me farebbe già paura questa...  

ho come il sospetto che rispetto alla Sr3 turbo questa sia molto più guidabile , quindi più efficace anche se leggermente meno adrenalinica.
10 euro che sbriciola il record del Ring già detenuto dalla sorella.

How much?

se mettono un turbazzo a questa hanno praticamente fatto una formula 1 stradale

Citazione di: THE KAISER il Ottobre 06, 2004, 21:39:07
se mettono un turbazzo a questa hanno praticamente fatto una formula 1 stradale

Le famose F1 a ruote coperte nè?

p.s. per i pignolini...lo so lo so che nel 1954 la W196 correva anche in versione carenata a tuote coperte

Citazione di: diabolik82 il Ottobre 06, 2004, 21:44:55
Le famose F1 a ruote coperte nè?

p.s. per i pignolini...lo so lo so che nel 1954 la W196 correva anche in versione carenata a tuote coperte

va bè,intendevo dire che il rapporto peso potenza si avvicina

forse sarà leggermente meno brutale....