Ferrari 275 S

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Ferrari 275 S
1950-04-24 Mille Miglia Ferrari 275 0030MT Ascari Nicolini.jpg
Alberto Ascari in Ferrari 275 S during 1950 Mille Miglia
Overview
Manufacturer Ferrari
Also calledFerrari 275 Sport
Production1950
2 produced [1]
Designer Federico Formenti [2] at Carrozzeria Touring
Body and chassis
Body style Barchetta
Layout Front mid-engine, rear-wheel-drive
Related Ferrari 275 F1
Powertrain
Engine 3.3 L (3322.34 cc) Lampredi V12
Power output270 PS
Transmission 5-speed manual
Dimensions
Wheelbase 2,250 mm (88.6 in)
Curb weight 850 kg (1,874 lb) (dry)
Chronology
Successor Ferrari 340 America
Ferrari 340 Mexico/MM

The Ferrari 275 S was a sports racing car produced by Ferrari in 1950. It was the first Ferrari powered by a new Aurelio Lampredi-designed V12 engine, created as a large displacement alternative to the initial 1,5 L Colombo V12, used in supercharged form in Ferrari 125 F1. [3] Formula One regulations allowed for up to 4.5 L in naturally aspirated form. [4]

Contents

Development

The naturally-aspirated, then supercharged Colombo engine did not fulfil its expectations in Grands Prix and Formula One, and an alternative was required for Ferrari to stay competitive. Aurelio Lampredi designed the new V12 engine that was intended for Formula One race cars, but first had to be tested in a sports racing car. Only two examples were ever created. Both had Touring barchetta bodywork. [4] None of them survive in their original form. [5]

Specifications

The new 'long-block' engine displaced 3,322.34 cc (3.3 L; 202.7 cu in), thanks to 72 by 68 mm (2.8 by 2.7 in) of bore and stroke and had SOHC configuration with two valves and single spark plug per cylinder. [3] Initially power output was 270 PS (199 kW; 266 hp) at 7200 rpm with 8:1 compression ratio. Engine was fed by three Weber 40DCF carburettors and used wet sump lubrication. Top speed was 240 km/h. [1]

The chassis was a ladder frame aided by steel tubes of a short, 2,250 mm (88.6 in), wheelbase, derived from 166 MM. [6] This value will change when upgraded to 340 America specification. Front suspension was independent and rear had a live axle with semi-elliptic springs. Stopping was by four-wheel drum brakes. [7]

Racing

The 1950 edition of Mille Miglia race was attended by both examples of 275 S. [8] Alberto Ascari with Senesio Nicolini drove 0030MT and Luigi Villoresi with Pasquale Cassani raced in 0032MT. [3] Both teams encountered transmission problems, that could not cope with high amounts of power, and did not finish the race. Cars raced only a couple more times in its 275 S guise. [9] Despite poor initial results the engine proved its desired potential and was immediately used for a single-seater Ferrari 275 F1, as was its original purpose. [4]

275 S/340 America

275 S/340 America Touring Barchetta at 1951 Susa-Moncenisio hillclimb 1951-07-22 Susa-Moncenisio Ferrari sn0030MT Marzotto.jpg
275 S/340 America Touring Barchetta at 1951 Susa-Moncenisio hillclimb

Between 1950-1951 both cars were upgraded with the new 4.1 L, also Lampredi , engines, that in turn were derived from Formula One powerplants. After conversion power dropped to 220 PS (162 kW; 217 hp). Now converted into 340 America model-line, one car s/n 0030MT was further rebodied by a new coachbuilder, Scaglietti, after 1952. The other car remained in the original Touring barchetta form. [10] S/n 0030MT was auctioned in 2015 by RM Sotheby's in Monterey for almost US$8 million. [11]

Related Research Articles

Ferrari Lampredi engine Motor vehicle engine

The Ferrari Lampredi engine was a naturally aspirated all aluminum 60° V12 engine produced between 1950 and 1959. Inline-4 and Inline-6 variants for racing were derived from it.

Carrozzeria Scaglietti

Carrozzeria Scaglietti was an Italian automobile design and coachbuilding company active in the 1950s. It was founded by Sergio Scaglietti in 1951 as an automobile repair concern, but was located across the road from Ferrari in Maranello outside Modena, Italy.

Ferrari America Motor vehicle

Ferrari America is a series of top-end Ferrari models built in the 1950s and 1960s. They were large grand touring cars with the largest V12 engines and often had custom bodywork. All America models used a live axle in the rear, were front-engined, and had worm and sector steering.

Ferrari 166 S Motor vehicle

The Ferrari 166 S was a sports racing car built by Ferrari between 1948 and 1953, an evolution of its Colombo V12-powered 125 S racer. It was adapted into a sports car for the street in the form of the 166 Inter.

Aurelio Lampredi

Aurelio Lampredi was an Italian automobile and aircraft engine designer.

Ferrari 340

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The 125 F1 was Ferrari's first Formula One car. It shared its engine with the 125 S sports racer which preceded it by a year, but was developed at the same time by Enzo Ferrari, Valerio Colotti and designer, Gioacchino Colombo. Initially the racer was called 125 GPC for Gran Premio Città or Grand Prix Compressore before the Formula One era.

Ferrari 375 F1

After finding only modest success with the supercharged 125 F1 car in Formula One, Ferrari decided to switch for 1950 to the naturally aspirated 4.5-litre formula for the series. Calling in Aurelio Lampredi to replace Gioacchino Colombo as technical director, Enzo Ferrari directed that the company work in stages to grow and develop an entirely new large-displacement V12 engine for racing.

Ferrari 166 Inter Motor vehicle

The Ferrari 166 Inter was Ferrari's first true grand tourer. An evolution of the 125 S and 166 S racing cars, it was a sports car for the street with coachbuilt bodies. The Inter name commemorated the victories claimed in 166 S models by Scuderia Inter. 38 166 Inters were built from 1948 through 1950. Note that both the 166 S and 166 F2 were also called "166 Inter" in the days that they were actively raced by the Scuderia of the same name.

Ferrari 250 S Motor vehicle

The Ferrari 250 S was a sports racing car produced by Ferrari in 1952. It was the first in the long lineage of Ferrari 250 road and race cars powered by a ubiquitous 3.0-litre Colombo V12 engine. In 1952 the 250 S won the Mille Miglia and 12 Hours of Pescara. At the Le Mans, the same year, it clocked the fastest race lap time. Only a single example was produced.

Ferrari Monza Motor vehicle

The Ferrari Monza is one of a series of cars built by Ferrari. In the early 1950s, Ferrari shifted from using the compact Gioacchino Colombo-designed V12 engine in its smallest class of sports racers to a line of four-cylinder engines designed by Aurelio Lampredi. Inspired by the success of the light and reliable 2.5 L 553 F1 car, the four-cylinder sports racers competed successfully through the late 1950s, culminating with the famed 500 Mondial and 750 Monza.

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Ferrari 250 Monza Motor vehicle

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Ferrari 375 MM Motor vehicle

The Ferrari 375 MM, was a sports racing car produced by Ferrari in 1953 up to 1955 for the road cars. It was named "375" for the unitary displacement of one cylinder in the 4.5 L V12 engine, and the "MM" stood for the Mille Miglia race. In total 26 units were made, including four converted from the 340 MM.

Ferrari Jano engine Motor vehicle engine

Vittorio Jano designed a new 60° V12 engine for sports car racing for Ferrari. This new engine, introduced in 1956, combined elements of both Colombo and Lampredi engines with new features. Engine architecture was more of Lampredi school but retained smaller Colombo internal measurements. Jano moved to Ferrari along with his designs for the Lancia D50 in 1955 and went on to design not only a new V12 but also a family of the Dino V6 engines soon after. Some of the technical ideas came from the Jano's Lancia V8 DOHC engine, intended for Formula One. This family of engines replaced Lampredi inline-4s known from Ferrari Monza line and went on to win many international races and titles for Ferrari. The design team comprised Jano as well as Vittorio Bellentani, Alberto Massimino, and Andrea Fraschetti.

Ferrari 410 S Motor vehicle

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Ferrari 376 S Motor vehicle

The Ferrari 376 S was a sports racing car produced by Ferrari in 1955. It was the first raced Ferrari powered by a new Aurelio Lampredi-designed inline-6 engine, created as a larger alternative to the inline-4 series of engines used in the Ferrari Monza race cars. The intention behind the development of this model was the 1955 Mille Miglia race. It was yet another attempt by Ferrari to match the new Mercedes-Benz 300 SLR in competition. All of the created cars were further converted into a bigger capacity models.

Ferrari 735 LM Motor vehicle

The Ferrari 735 LM was a sports racing car produced by Ferrari in 1955. It was the second raced Ferrari, powered by an Aurelio Lampredi-designed inline-6 engine, created as a larger displacement evolution to the engines used in the Ferrari Monza race cars.

Ferrari 290 S 1957 sports car

The Ferrari 290 S was a sports racing car produced by Ferrari in 1957. It was a development of an earlier 290 MM race car that won the 1956 Mille Miglia. The 290 S was the first sports car manufactured by Ferrari to be powered by a DOHC V12 engine. Its career was very short but it served as an important milestone in the Jano V12-powered lineage.

Ferrari F1 V12 Motor vehicle engine

Ferrari has made a number of V12 racing engines designed for Formula One. Their first was the supercharged 125 Colombo engine; with the 1.5 L engine configuration imposed by the FIA for forced induction engines, in 1950. After finding only modest success with the supercharged 1.5-litre engine, Ferrari decided to switch in 1950 to a naturally-aspirated engine formula for the series. Calling in Aurelio Lampredi to replace Gioacchino Colombo as technical director, Enzo Ferrari directed that the company work in stages to grow and develop an entirely new large-displacement V12 engine for racing.

References

  1. 1 2 "Ferrari 275 S - Register". barchetta.cc. Retrieved 11 July 2019.
  2. "Il Designer Dimenticato". driventowrite.com. Retrieved 15 December 2020.
  3. 1 2 3 Eaton, Godfrey (1983). Ferrari: The Road And Racing Cars. Haynes Publishing. p. 172.
  4. 1 2 3 Acerbi, Leonardo (2012). Ferrari: All The Cars. Haynes Publishing. pp. 24–25.
  5. "Ferrari 275 S Fontana Spyder". ultimatecarpage.com. Retrieved 14 November 2019.
  6. "275 Sport / 340 America Barchetta Touring". mitorosso.com. Retrieved 11 July 2019.
  7. "Ferrari 275 S". ferrari.com. Retrieved 11 July 2019.
  8. "All Results of Ferrari 275 S". racingsportscars.com. Retrieved 11 July 2019.
  9. "275 S 0032MT". barchetta.cc. Retrieved 11 July 2019.
  10. "275 S 0030MT". barchetta.cc. Retrieved 11 July 2019.
  11. "1950 Ferrari 275S/340 America Barchetta by Scaglietti". rmsothebys.com. Retrieved 11 July 2019.

Bibliography