There's a question that keeps popping up among fans new to open-wheel racing: what is the difference between Formula One cars and IndyCars?
Well, first, IndyCars are built for a "spec" series and that means that virtually all the parts are identical.
In F-1, each team -- like Ferrari, for example -- builds its own cars and what goes into each is a secret. But generally the cars, from on TV and from a distance on the track, appear very similar.
IndyCar ...
IndyCar Series engines are rev-limited to 10,300 rpm and produce approximately 650 horsepower. The valve train is a dual overhead camshaft configuration with four valves per cylinder. The crankshaft is made of alloy steel, with five main bearing caps.
The pistons are forged aluminium alloy, while the connecting rods are machined alloy steel.
The electronic engine management system is supplied by Motorola, firing a CDI ignition system. The engine lubrication is a dry sump type, cooled by a single water pump.
Technical specs:
Displacement: 3.5 L DOHC V8; Gearbox: 6 speed paddle shift gearbox
Weight: 1,525 lbs (691.7 kg) on ovals; 1,600 lbs (725.7 kg) on road courses
Power Output: 650 hp; Fuel: 100% ethanol; Fuel Capacity: 83 litres; Fuel Delivery: Fuel injection; Aspiration: Naturally aspirated; Length: 192 in (4.88 m) minimum; Width: 78.5 in (1.99 m) (outside wheel rims); 74 in (1.88 m) minimum (measured at the hub centreline); Wheelbase: 120 in (3.05 m); Steering: Manual, rack and pinion; Speed: Around 385 km/h (240 mph).
Formula One ...
The F-1 Ferrari's chassis is carbon-fibre and honeycomb composite structure. The horsepower produced by the Ferrari engine is approximately 800 with as much as 19,000 rpm.
The Ferrari differential includes a longitudinal gearbox, limited-slip differential that is semiautomatic, sequential electronically controlled gearbox - quick shift; 7 gears plus reverse.
Its has Brembo ventilated carbon-fibre disc brakes and it has independent suspension, push-rod activated torsion springs.
Technical specs:
Weight: 1,331lbs (605kg) with water, lubricant and driver; Wheels: BBS Wheels (front and rear) 13%; Kers: Kinetic energy recovery system by Ferrari in co-operation with Magneti Marelli. Engine: Displacement: 2.3L, V8; Power output: 900 horsepower (approx.); Designation: Type 056; Configuration: Cylinder block in cast aluminium V8 90 degrees ; Number of valves: 32, pneumatically distributed; Piston bore: 98 mm; Injection: Magneti Marelli digital electronic injection; Ignition: Magneti Marelli static electronic ignition; Fuel: Shell V-Power ULG-66L/2.
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