# ALFA 40/60 HP

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/ALFA_40%2F60_HP
> Markdown URL: https://mediated.wiki/source/ALFA_40%2F60_HP.md
> Source: https://en.wikipedia.org/wiki/ALFA_40%2F60_HP
> Source revision: 1350617167
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

Motor vehicle

ALFA 40/60 HP 1921 ALFA 40/60 HP tipo corsa Overview Manufacturer ALFA Production 1913–1922 27 made[1] Assembly Portello, Milan, Italy Body and chassis Body style Torpedo Spider (tipo corsa) Layout Front-engine, rear-wheel drive Powertrain Engine 6,082 cc I4[1] Transmission 4-speed manual[1] Dimensions Wheelbase 3,200 mm (126.0 in)[1] 2,950 mm (116.1 in)[1] (tipo corsa) Kerb weight 1,250 kg (2,756 lb)[1] 1,100 kg (2,425 lb)[1] (tipo corsa) Chronology Successor Alfa Romeo G1

[Giuseppe Campari](/source/Giuseppe_Campari) in his Alfa Romeo 40-60 HP at the 1922 [Targa Florio](/source/Targa_Florio).

The **ALFA 40/60 HP** is a road car and race car made by [Italian](/source/Italy) car manufacturer ALFA (later to become [Alfa Romeo](/source/Alfa_Romeo)). This model was made between 1913 and 1922 and was designed by [Giuseppe Merosi](/source/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.

40/60 HP production and development was interrupted by the [First World War](/source/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](/source/Giuseppe_Campari) won the 1920 and 1921 races at [Mugello](/source/Mugello_Circuit) with this car.

## Specifications

The 40-60 HP was based on a [ladder chassis](/source/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](/source/Compression_ratio) 4.35:1) [overhead valve](/source/Overhead_valve) [inline-four cylinder](/source/Straight-four_engine), fed by a single vertical [carburettor](/source/Carburettor).[2] The *[en bloc](/source/Monobloc_engine)* [cylinder block](/source/Cylinder_block) and [cylinder head](/source/Cylinder_head) were split in two groups of two cylinders, and made of [cast iron](/source/Cast_iron); the [crankcase](/source/Crankcase) was cast [aluminium](/source/Aluminium), incorporating the four engine mountings.[1] The two in-block [camshafts](/source/Camshaft) were driven by a [gear train](/source/Gear_train) located at the front of the engine.[1]

The driveline comprised a dry multi-plate [clutch](/source/Clutch), a four-speed [gearbox](/source/Gearbox) and a one-piece [propeller shaft](/source/Propeller_shaft), spinning inside a tube attached to the rear differential housing.[2] 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](/source/Solid_axle) were sprung on longitudinal semi-elliptic [leaf springs](/source/Leaf_spring). Brakes were [drums](/source/Drum_brake) on the rear wheels, with both pedal and hand controls. The wheels were 5.5x19" [Sankey-type pressed steel](/source/Artillery_wheel#Motor_vehicles).[1]

### 40-60 HP tipo corsa

The *tipo corsa* sat on a shortened [wheelbase](/source/Wheelbase) of 2,950 mm (116.1 in), instead of the road car's 3,200 mm (126.0 in).[1] [Kerb weight](/source/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](/source/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](/source/Wire_wheel).[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]

## 40/60 HP Aerodynamica

ALFA 40-60 HP [Castagna](/source/Carrozzeria_Castagna) Aerodinamica prototype

In 1914 the milanese count Marco Ricotti commissioned to [Carrozzeria Castagna](/source/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](/source/Alfa_Romeo_Museum).[3]

## References

### Notes

1. ^ [***a***](#cite_ref-FOOTNOTEFusi197827_1-0) [***b***](#cite_ref-FOOTNOTEFusi197827_1-1) [***c***](#cite_ref-FOOTNOTEFusi197827_1-2) [***d***](#cite_ref-FOOTNOTEFusi197827_1-3) [***e***](#cite_ref-FOOTNOTEFusi197827_1-4) [***f***](#cite_ref-FOOTNOTEFusi197827_1-5) [***g***](#cite_ref-FOOTNOTEFusi197827_1-6) [***h***](#cite_ref-FOOTNOTEFusi197827_1-7) [***i***](#cite_ref-FOOTNOTEFusi197827_1-8) [***j***](#cite_ref-FOOTNOTEFusi197827_1-9) [***k***](#cite_ref-FOOTNOTEFusi197827_1-10) [***l***](#cite_ref-FOOTNOTEFusi197827_1-11) [***m***](#cite_ref-FOOTNOTEFusi197827_1-12) [***n***](#cite_ref-FOOTNOTEFusi197827_1-13) [***o***](#cite_ref-FOOTNOTEFusi197827_1-14) [***p***](#cite_ref-FOOTNOTEFusi197827_1-15) [***q***](#cite_ref-FOOTNOTEFusi197827_1-16) [***r***](#cite_ref-FOOTNOTEFusi197827_1-17) [Fusi (1978)](#CITEREFFusi1978), p. 27.

1. ^ [***a***](#cite_ref-FOOTNOTEFusi19783_2-0) [***b***](#cite_ref-FOOTNOTEFusi19783_2-1) [Fusi (1978)](#CITEREFFusi1978), p. 3.

1. **[^](#cite_ref-3)** ["Speciale Virtual Car: ALFA 40/60 HP Aerodinamico (carr. Castagna), 1914"](https://web.archive.org/web/20130627212134/http://www.virtualcar.it/speciale-virtual-car-alfa-romeo-40-60-hp-siluro-ricotti-1914/). *virtualcar.it* (in Italian). Archived from [the original](http://www.virtualcar.it/speciale-virtual-car-alfa-romeo-40-60-hp-siluro-ricotti-1914/) on 2013-06-27. Retrieved 11 October 2012.

### Bibliography

- Borgeson, Griffith (1990). *The Alfa Romeo Tradition*. City: Haynes (Foulis) Publishing Group Ltd. Somerset, UK. [ISBN](/source/ISBN_(identifier)) [0-85429-875-4](https://en.wikipedia.org/wiki/Special:BookSources/0-85429-875-4).

- Fusi, Luigi (1978). *Alfa Romeo—Tutte le vetture dal 1910—All cars from 1910* (3rd ed.). [Milan](/source/Milan): Emmeti Grafica editrice.

## External links

Wikimedia Commons has media related to [A.L.F.A 40/60 HP](https://commons.wikimedia.org/wiki/Category:A.L.F.A_40/60_HP).

- [ALFA 40-60 HP Castagna Siluro Aerodinamica 1914 on autoconcept-reviews.com](http://autoconcept-reviews.com/cars_reviews/alfa-romeo/alfa-romeo-40-60-hp-castagna-siluro-aerodinamica-1914/cars_reviews_alfa_romeo-40-60-hp-castagna-siluro-aerodinamica-1914.html)

v t e Alfa Romeo A marque of Stellantis Brands Marques Active Alfa Romeo Defunct FNM Divisions, joint-ventures and subsidiaries Former & defunct Fábrica Nacional de Motores (FNM) Alfa Romeo Avio Società Pompe Iniezione Cassani & Affini (SPICA) Società Franco Italiana Motori (Sofim) Alfa Romeo Nissan Autoveicoli S.p.A. Predecessors & old names Società Italiana Automobili Darracq (S.I.A.D.) (predecessor) Anonima Lombarda Fabbrica Automobili (A.L.F.A.) (old name) Current cars 33 Stradale Giulia Junior Stelvio Tonale Future cars Castello Historic and discontinued models 24 HP 40-60HP 20-30HP G1/G2 RM RL 4C 4C Spider 6C 8C 1900 Matta Giulietta 2000 Giulietta Sprint Speciale Giulia 2600 105/115 Series Coupés GTA Gran Sport Quattroruote Spider (105/115) 1750 Berlina 33 Stradale MiTo Montreal 2000 Berlina Alfasud Alfetta Alfetta GT Sprint Nuova Giulietta Giulietta Alfa 6 Arna 33 75 90 164 SZ RZ 155 GTV Spider (916) 145 146 156 166 147 GT 159 Brera Spider (939) 8C Competizione 8C Spider Concept cars 1000 Abarth 2000 Sportiva 2uettottanta 33.2 4C Concept BAT series Bella Brera Caimano Canguro Carabo Dardo Delfino Disco Volante Disco Volante (2013) Diva Eagle Giulia Sport Gloria Iguana Issima Kamal Monospider Navajo New York Taxi Nuvola Pandion Proteo Sportut Scarabeo Scarabeo II Scighera Tipo 103 Visconti TZ3 Vivace Vola Zeta 6 Tonale Concept Buses 40A 80A 85A 110A 140A 150A 430A 500A 800A 900A 902A 950A Mille Trolleybuses 110AF 140AF 800AF 900AF Mille AF Trucks 50 80 85 110 350 430 450 500 800 900 950 Mille A15 A19 A38 F20 Racing cars Grand Prix P1 P2 P3 Tipo A Tipo B (P3) Tipo C (8C-35) Tipo 308 Tipo 312 Tipo 316 Bimotore 12C Tipo 512 158/159 Alfetta TZ/TZ2 GTA Tipo 33 177 179 182 183T 184T 185T SE 048SP 155 V6 TI Alfa Special Vans Romeo A11/F11 A12/F12 AR6 AR8 Motorsport Companys Alfa Romeo in motorsport Alfa Romeo in Formula One (Results) Scuderia Ferrari Alfa Corse Autodelta N.Technology Jolly Club Alfa GTV Cup Technologies Blue&Me Selespeed Multiair Alfa Romeo engines (aircraft engines) platforms Places and facilities Alfa Romeo Museum Alfa Romeo Arese Plant Alfa Romeo Cassino Plant Alfa Romeo Pomigliano d'Arco plant Alfa Romeo Portello Plant Balocco People Nicola Romeo Giuseppe Merosi Vittorio Jano Enzo Ferrari Rudolf Hruska Carlo Chiti Gioacchino Colombo Wifredo Ricart Orazio Satta Puliga Giuseppe Busso Ugo Gobbato Sergio Limone Drivers Formula One drivers Tazio Nuvolari Giuseppe Campari Achille Varzi Luigi Arcangeli Clemente Biondetti Antonio Ascari Ugo Sivocci Jean-Pierre Wimille Guy Moll Gastone Brilli-Peri Baconin Borzacchini Other Alfa Romeo I Alfa Romeo II Alfa Romeo III Alfa Romeo Racing Italiano History of Alfa Romeo Category Commons

v t e Alfa Romeo car timeline, 1910s–1940s — next » Ownership Ugo Stella & investors Nicola Romeo IRI Type 1910s 1920s 1930s 1940s 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 4-cyl. 12 HP/15 HP 15-20 HP WWI [α] WWII 24 HP RM 20-30 HP [α] 20-30 ES 40-60 HP 6-cyl. G1 RL 6C 1500/1750/1900 6C 2300 6C 2500 8-cyl. 8C 2300 8C 2900 Grand Prix car GP P1 P2 Tipo A Tipo B (P3) 8C 35 158 158 308 Bi motore 12C 312 512 316 162 Notes [α] 105 A.L.F.A 15-20 HP and 20-30 HP started in 1915 were completed in 1920, after the war, as Alfa Romeo models.

---
Adapted from the Wikipedia article [ALFA 40/60 HP](https://en.wikipedia.org/wiki/ALFA_40%2F60_HP) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/ALFA_40%2F60_HP?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.