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The ALFA 40/60 HP is a road car and race car made by Italian car manufacturer ALFA (later to become Alfa Romeo). This model was made between 1913 and 1922 and was designed by Giuseppe Merosi, as were all other Alfas at that time. The 40/60 HP has a 6082 cc straight-four engine with overhead valves, which produced 70 PS (51 kW) and its top speed was 125 km/h (78 mph). The 40-60 HP Corsa racing version had 73 PS (54 kW) and a top speed of 137 km/h (85 mph), and it also won its own category in the Parma-Berceto race.

ALFA 40-60 HP Castagna Aerodinamica prototype
ALFA 40-60 HP Castagna Aerodinamica prototype
ALFA 40/60 HP
1921 ALFA 40/60 HP tipo corsa
Overview
ManufacturerALFA
Production1913–1922
27 made[1]
AssemblyPortello, Milan, Italy
Body and chassis
Body style
  • Torpedo
  • Spider (tipo corsa)
LayoutFront-engine, rear-wheel drive
Powertrain
Engine6,082 cc I4[1]
Transmission4-speed manual[1]
Dimensions
Wheelbase3,200 mm (126.0 in)[1]
2,950 mm (116.1 in)[1] (tipo corsa)
Kerb weight1,250 kg (2,756 lb)[1]
1,100 kg (2,425 lb)[1] (tipo corsa)
Chronology
SuccessorAlfa Romeo G1
Giuseppe Campari in his Alfa Romeo 40-60 HP at the 1922 Targa Florio.
Giuseppe Campari in his Alfa Romeo 40-60 HP at the 1922 Targa Florio.

In 1914 the milanese count Marco Ricotti commissioned to Carrozzeria Castagna the ALFA 40/60 HP Aerodinamica (also known as Siluro Ricotti), a prototype model which could reach 139 km/h (86 mph) top speed. A replica of that car was created in the 1970s, and now it is shown in the Alfa Romeo Historical Museum.[2]

40/60 HP production and development was interrupted by the First World War, but resumed briefly afterwards. The 40-60 HP Corsa now had 82 PS (60 kW) and a top speed of around 150 km/h (93 mph). Giuseppe Campari won the 1920 and 1921 races at Mugello with this car.


Specifications


The 40-60 HP was based on a ladder chassis of C-shaped stamped steel rails.

Its engine was a 6,082 cc or 371 cu in (bore and stroke 110 x 160 mm, compression ratio 4.35:1) overhead valve inline-four cylinder, fed by a single vertical carburettor.[3] The en bloc cylinder block and cylinder head were split in two groups of two cylinders, and made of cast iron; the crankcase was cast aluminium, incorporating the four engine mountings.[1] The two in-block camshafts were driven by a gear train located at the front of the engine.[1]

The driveline comprised a dry multi-plate clutch, a four-speed gearbox and a one-piece propeller shaft, spinning inside a tube attached to the rear differential housing.[3] At its open end, towards the gearbox, this tube forked out into two ends which, linked to the chassis, located the rear axle. The gearbox was positioned towards the middle of the chassis, almost underneath the driver, rather than in block with the engine—to which it was connected by a short prop shaft. Front and rear solid axles were sprung on longitudinal semi-elliptic leaf springs. Brakes were drums on the rear wheels, with both pedal and hand controls. The wheels were 5.5x19" Sankey-type pressed steel.[1]


40-60 HP tipo corsa


The tipo corsa sat on a shortened wheelbase of 2,950 mm (116.1 in), instead of the road car's 3,200 mm (126.0 in).[1] Kerb weight was 1,100 kg (2,425 lb) versus 1,250 kg (2,756 lb).[1] The racing-prepared engine was fitted with two carburettors and had a 5.50:1 compression ratio.[1] It produced 73 PS (54 kW) at 2,000 rpm; after the war, for the 1920–22 races, it was brought to 82 PS (60 kW) at 2,400 rpm.[1] Top speed was 150 km/h (93 mph).[1] The final drive ratio was 18/49 instead of the standard 17/49.[1] The Sankey steel wheels were replaced by 6.0x20" knock-off wire wheels.[1] Fuel tank capacity was expanded from the standard 70 L (15 imp gal; 18 US gal) to 120 L (26 imp gal; 32 US gal).[1]


References



Notes


  1. Fusi (1978), p. 27.
  2. "Speciale Virtual Car: ALFA 40/60 HP Aerodinamico (carr. Castagna), 1914". virtualcar.it (in Italian). Archived from the original on 2013-06-27. Retrieved 11 October 2012.
  3. Fusi (1978), p. 3.

Bibliography




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На других языках

[de] Alfa Romeo 40-60 HP

Der Alfa Romeo 40-60 HP, zuvor A.L.F.A. 40-60 HP, war ein Pkw von Alfa Romeo, zuvor von der Società Anonima Lombarda Fabbrica Automobili.[1]
- [en] ALFA 40/60 HP

[fr] Alfa Romeo 40-60 HP

L'Alfa Romeo 40-60 HP est une automobile du début des années 1910 destinée essentiellement à une clientèle sportive pour qui le modèle 24 HP n'était pas suffisant. C'est en fin d'année 1912 que la décision de mettre ce modèle en fabrication fut prise par Giuseppe Merosi. Le nouveau modèle 40-60 HP ne devait pas être une voiture exclusivement destinée aux compétitions, mais être aussi un modèle destiné à conforter l'image de la nouvelle marque milanaise.

[it] ALFA 40-60 HP

L'ALFA 40-60 HP è un'autovettura prodotta tra il 1913 e il 1922 dall'ALFA, ovvero dalla casa automobilistica che in seguito sarebbe diventata Alfa Romeo.[1]

[ru] A.L.F.A 40/60 HP

A.L.F.A 40/60 HP — автомобиль производства компании A.L.F.A. Фирма производила данную модель девять лет, с 1913 по 1922 год.


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