RUF917LH
Novice

Caterham R-500 vs. Ariel Atom 300 conv. Just as a theoretical around a track such as a the Nurburgring. Which would you purchase?
Atom
0-60 mph : 2.7 seconds (manufacturer's claim)
Top Speed: 140 mph, 225 km/h (155 mph, 249 km/h supercharged)
Power: 245 bhp (183 kW; 248 PS) @ 8200 rpm (300 bhp supercharged)
Torque: 210 N·m (150 ft·lbf) @ 6100 rpm
Weight: 456 kg (1,005 lb)
Transmission: Honda six-speed with reverse
Price: £20,000/£29,000 supercharged (cost in the US is over $65,000)
Engine: 2.0L Honda K20Z, 4 Cylinder, i-VTEC
Manufacturer: Ariel Motor Company Ltd
Length: 3,410 mm (134 in)
Width: 1,798 mm (70.8 in) / 1,828 mm (72.0 in) with 225 Tyres
Height: 1,195 mm (47.0 in)
Track: 1,600 mm (63 in) front and rear
Wheelbase: 2,345 mm (92.3 in)
Designer: Nik Smart

R500
ENGINE:
Caterham developed Rover 1.8 litre K-Series. (Minster Racing Engines)
Capacity: 1,796cc 80mm (bore) x 89.3mm (stroke).
Compression Ratio: 11.5:1.
Cylinder Head: 16 valve DOHC.
Valve Actuation: mechanical tappets and lightweight flatback valves.
Induction: Caterham magnesium inlet manifold featuring roller barrel throttle actuation.
Oil System: Caterham designed dry-sump system featuring magnesium pan and bell-tank housing.
Pistons: Cosworth. Crankshaft/Con Rods: Forged steel. Engine Management:
MBE system with unique map. Caterham ultra-lightweight low inertia flywheel with AP racing light-weight clutch.
Exhaust: Large bore plated 4 into 1 system with carbon silencer.
Max power: 230 bhp @ 8,600rpm.
Max torque: 155 lbsft @ 7,200rpm. Maximum revs 9,200rpm.
Gearchange warning: Dash top mounted sequential.

FUEL:
Unleaded

PERFORMANCE:
Maximum Speed: 150mph.
0-60 3.4 seconds.

TRANSMISSION:
Caterham ultra close-ratio aluminium gearbox.
1st 2.69:1
2nd 2.01:1
3rd 1.59:1
4th 1.32:1
5th 1.13:1
6th 1.00:1
Reverse 2.96:1.
Final Drive: Limited Slip Differential 3.92:1.

Exterior & special Equipment:
Carbon fibre nosecone, front and rear wings.
Carbon fibre dashboard.
Stack digital information system.
Carbon fibre indicator shrouds.
Carbon fibre wind deflector.
Carbon fibre exterior mirrors.
Carbon fibre sill protectors.
Aerofoil section front wishbones.
3.92 LSD.
Titanium silencer on large bore, plated 4 into 1 race type exhaust system.

Exterior & special Equipment cont:
Magnesium roller barrel throttle bodies
Magnesium centred light alloy split rim wheels
Black powder coated interior and engine bay
Uprated brake master cylinder
Rear Watts link
254mm 4 pot front brakes
Carbon-kevlar Tillet manufactured race seats
Alloy radiator
“Carbon” look leather transmission tunnel cover
Large guage roll over bar
Wide track front end
MBE systems engine management
4 Point harnesses
Momo quick release steering wheel

DIMENSIONS:
Wheelbase: 2,225mm.
Front Track: 1,336mm.
Rear Track: 1,336mm.
Overall length: 3,100mm.
Overall width: 1,575mm.
Height: 800mm.
Ground clearance: 80mm.
Turning circle: 10m.

WHEELS & TYRES:
Wheels: Front 61/2J x 13.
Rear: 81/2J x 13. Caterham 3 piece Magnesium Hub/Spun Alloy Rim.
Tyres: Bespoke Avon Radial R500 specification.
Front: 185/55 R 13.
Rear 215/50 R 13.

STEERING:
Rack-and-pinion, 2.12 turns lock-to-lock. Quick release Momo steering wheel.

BRAKES:
Front: 254mm lightweight ventilated discs. Caterham/AP Racing 4 pot calipers. Rear: 228mm solid discs.
SUSPENSION:
Front: Widetrack adjustable, aerofoil tube wishbone, adjustable spring seats & anti roll bar.
Rear: de Dion axle with lower A-frame and upper Watts link with adjustable anti roll bar, adjustable spring seats. Springs: Coil.
Dampers: Bilstein telescopic.

WEIGHT: Kerb weight 460 kg.