New regulations called for the Le Mans racers to more closely resemble road cars including the use of a full-width windscreen. In 1961 this was answered by high rear decks with spoilers but this had minimal effect on high speed stability. For the following season Forghieri and Enmondo Casoli came up with a roll bar that wasn't really a roll bar but an inverted airfoil which was built into the 330 TRI/LM, behind the cockpit and at the same level as the top of the windscreen. The modification had several purposes, one was to reduce the turbulence in the wake of the windscreen and another to produce downforce. The new car was driven with great effect by Phil Hill and Oliver Gendebien to victory at Le Mans in June. This device would continue to be used in open sports cars raced by Ferrari.
Michael May, an engineer who consulted for Ferrari in 1963-64 on its adoption of Bosch direct fuel infection for its racing engines, had pioneered the use of an enormous mid-mounted wing on his privately entered Porsche 550 Spyder, at the 1956 Nurburgring 1000 km race. His car was so fast in practice that the Porsche factory team manager supported those who argued successfully for the removal of its wing. May mentioned the function and success of the wing to Ferrari engineer Mauro Forghieri. It was Forghieri, who combined talking to May about the wing he had used previously and using the information given him about the Lotus wing experimented with in New Zealand, then engineered, built and mounted an aerodynamically sound wing on the 312 F1 Ferrari and tested it in 1968. Later Forghieri added twin hydraulic cylinders that allowed the driver to control the angle of the wing.
Aerodynamics were really starting to play a big role in car design in those days, and we hired a great aerodynamicist. When wanting to gain gain some of the same aerodynamic insight that the British teams gained thanks to the aircraft windtunnels available to them, Forghieri asked Enzo Ferrari for permission to hire the full-scale tunnel in Stuttgart that was known for its automobile research. "On that occasion he was decidedly long-sighted," recalled Forghieri. "Due to their cost, windtunnels were not used much in Italy at the time. Ferrari understood that it could be an advantage. This was a big concession by the man who long held that horsepower alone was the key to racing success", mused Forghieri. When we sent the car to the windtunnel, Forghieri recalled telling the aerodynamicist, "I designed this car, the chassis, the gearbox, the engine and bodywork, but when we send it to the tunnel let the wind dictate its final form—we will accept whatever shape the windtunnel gives the car". Of course, Ferrari told us "It’s ugly!" but we countered "Yes, but it’s very good!"
To provide for the future, during the summer of 1968, Ferrari worked out a deal to sell his road car business to Fiat for $11 million; the transaction took place in early 1969, leaving 50% of the business still under control of Ferrari himself.
During 1969 Enzo Ferrari set about wisely spending his new-found wealth to revive his struggling team; though Ferrari did compete in Formula One in 1969, it was something of a throwaway season while the team was restructured.
Forghieri had reached a crossroad at Ferrari, exhausted by the workload and the criticism by the Italian press he seriously considered resigning. Ferrari would here none of it, instead he offered to allow Forghieri to work in Modena, away from the pressure of Maranello and set up a research department that he could staff and run as he pleased. The result was a new engine and a new car. The Ferrari 312B which was introduced for the 1970 Formula One season. Forghieri had two goals in mind in Modena, to design a new motor from a clean sheet of paper similar to what Keith Duckworth of Cosworth had done and to investigate the lowering of a race car's Polar Moment of Inertia, also called center mass. For a car it basically means, the mass is concentrated near the CoG.
That´s the case with all/most mid-engined sports/race cars.
This leads to an very nimble handling, easy to change direction, however it also results in more rapid 'break away' and loss of control at a higher cornering speed ... that's where the driver comes in.
Doug Nye; "The 312B…was quite the best integrated 3 litre F1 package yet created. It would remain the best packaged of all Ferrari’s until the Postlethwaite 156 appeared in 1985" he said writing in 1986. "I always thought the 312T/T2 were pretty handy bits of integrated kit, but the point is, the car was a beautifully designed and executed car!"
At back-to-back tests in Stuttgart University's wind tunnel, it was discovered that the two-seater (312PB), with its enveloping body, generated much more downforce than its slender monoposto cousin. Even with its wheels still exposed, surmised Forghieri, an F1 car with a wide, flat top surface would generate greater aero grip than did the current 'Coke bottle' cars of Tyrrell and McLaren etc. This would, in turn, mean that a larger percentage of the car's weight could be sited within its wheelbase instead of hanging a chunk of it over the rear in a quest for better traction. It would also mean that less rear wing would be required, ergo more straight-line speed.
In August of 1972 Ferrari publicly debuted what they had been working on under the direction of Forghieri in private, a radical departure in Formula 1 car appearance if not design, the Spazzaneve (312B3) or snow plow in Italian. The car's most distinctive feature was it's wide scoop-like body treatment at the front. While definitely striking there were other features to the car that included centralized fuel tanks, a flat-12 engine borrowed from the 312B that was matched to separate engine-air inlets on each side of the wide body. The car underwent intensive testing both in the windtunnel and on the track, though it never actually appeared in an actual race. In terms of aerodynamics, said Forghieri, "the results obtained with this car were of absolute relevance. It permitted the conduct of studies that led to the development of the 312B3-74, the 312T" - later successful Formula 1 models.
Ferrari Flat-12 Engine
The clean sheet of paper that met Mauro Forghieri was soon filled with twelve cylinders set at 180 degrees. Forghieri wanted to reduce the rotating inertia of the crankshaft and minimize the engine's friction and pumping losses. Wasting less horsepower inside the engine would ensure more reached the rear wheels. This would be accomplished by using only four main bearings. The crankshaft was machined from a special alloy billet imported from the USA and it had four chain-driven overhead camshafts running on needle rollers. To cure early crankshaft failures, Forghieri had a specially developed coupling between the crankshaft and flywheel, the purpose being to transfer flexing stresses along the length of the crankshaft. The engine was capable of sustained operation at 13,500 rpm had the available ignition and injection systems been available. Starting in 1970 the 312 Flat-12 engine would enjoy an 11-year run in both sports and Formula 1 cars. Keith Duckworth (Cosworth), according to contemporaries, never seemed particularly impressed by Italy’s racing engines, unless they wore 'Ferrari' lettering.
Ferrari 312 Series
The Formula One 312 series, 3 for three litre and 12 for twelve cylinders were a series of very different cars. In 1967, the team fired Eugenio Dragoni and replaced him with respected journalist Franco Lini. Chris Amon partnered Lorenzo Bandini to drive a somewhat improved version of the 1966 V12 car. At the 1967 Monaco Grand Prix, Bandini crashed, the car burst into flames and the unfortunate Bandini succumbed to his injuries. Ferrari re-hired Mike Parkes, but Parkes suffered career-ending injuries weeks later at the 1967 Belgian Grand Prix. The new Ford Cosworth DFV engine that had its debut in the Lotus 49 would come to dominate F1 during the era of the garagistas.
|I was impressed by Mauro Forghieri when I first met him in 1969, and liked him immediately. He was the sort of person you could joke with, and when I saw the flat-12 at the Canadian Grand Prix in 1970 1 said "what a wonderful engine- thank goodness you've only got an old nail of a chassis to put it in!". We were standing by my car at the time, the Tyrrell 001, which had yet to do very much at all, but it was on pole position at that Grand Prix.
Luckily he laughed, but what I didn't know was that he had a better car on the drawing board, so he could afford to laugh.
Derek Gardner as told to Motorsport Magazine
The first of the Ts, confusingly still called a 312B3-74 was the culmination of this early work. Lowering the CoG had been the core aim of its layout, though this hadn't translated into a competitive edge often enough to prevent Forghieri from being banished to special projects for '73. An awful year without him persuaded Ferrari, and new Ferrari manager, Luca di Montezemolo to recall him in 74, with Montezemolo assuming some of Forghieri's previous workload.
Forghieri promptly exhumed his center-mass concept which would lead to his brilliant transverse gearbox. The new five speed transmission cluster was positioned across the car ahead of the rear axle line with the shafts lying at right-angles to the centre-line of the car and the drive taken via bevel gears on the input side of the gearbox. "When Mauro Forghieri first showed me the drawings of the 312T," recalls Lauda, "I felt indifferent about the whole project. I didn't really appreciate the advantages that it would offer because it seemed to be such a very big change away from a chassis about which we knew everything." In practice it worked brilliantly in conjunction with the low CoG of the flat-12 to make a car that sat on pole 10 times in 1974 thanks to Niki Lauda (nine) and Clay Regazzoni (1) and a World Championship car a year later. "But then, when I got to drive it around Fiorano, Ferrari's test track, I quickly appreciated that it was a much more competitive proposition. It was clear that it was in a different class. The strength of the new design was its totally neutral handling, and a wide torque curve from the superbly flexible flat 12 engine. Driveability", Lauda says, was the key.
"Forghieri was a genius but you needed to control him," Lauda adds. "I remember at Barcelona in practice, I came in and told him I had understeer. He said, 'You're taking the wrong lines'. I asked where, and he said, 'Round the back of the circuit' 'How do you know?' Because I have a friend out there who tells me.' 'Who's your friend?' Ah, it's the lady friend of my doctor.' I said, 'Fix my f***ing understeer.' He did and I put it on pole."
Niki Lauda as told to Motorsport Magazine
Even though it was Forghieri that utilized the first workable rear wing in Formula 1 he must have realized that the British would have the advantage when it ultimately came to aerodynamics so to even Ferrari's chances they needed to emphasis the mechanical advantage of any new design. The British dominance would come in the form of ground effects.
A note on Forghieri's banishment: This was actually a ploy often used by Ferrari to show his displeasure or to appease and shield his valuable employee from the harsh demands of the Italian motoring press and through them, the public. When the tifosi were out for blood, Ferrari could always find a lamb to bleed.
Form follows Function
Of all the cars that Forghieri designed, his favorite was actually a sports car, the 330 P4, which took a stunning win at the Daytona 24 Hours in 1967 and is arguably one of the most beautiful racing cars ever built.
"Aesthetics is one thing and functionality, another" he admits. "But when the two meet, when a design is beautiful and works well for the purpose it has been designed, it is just great.It’s true for a car, for a building, for a piece of furniture, for everything."Only four Ferrari P4-engined cars were ever made: three new 330 P4s and one ex P3 chassis (0846).Their three-valve cylinder head was modeled after those of Italian Grand Prix-winning Formula One cars. "The P4 was a very pleasant car to drive, as it was a great deal more nimble than the Fords I was used to. Although it lacked the ultimate top end pace of the 7-litre Ford, it gave you the feeling that you could drive it to the maximum for the whole race, which really wasn’t the case for the Fords, especially the brakes ... ", recalled Chris Amon who had a chance to drive both cars.
As a counter-example, he cites the 312T4 that took the title in 1979 with Jody Scheckter: In Formula One everybody was talking about “ground effect” and single-seaters were planned to generate under-body downforce for higher corner speed. With help from Fiat and Pininfarina Ferrari hastily adapted the successful 312T chassis for ground effects use, even though the The 180° V12 engine and the transversal gearbox didn’t allow the Ferrari to benefit from the ground effect very well due to the space conditions in the rear of the car, which weren’t favorable in terms of air (Venturi) outlet.
"We still used the flat boxer 12-cylinder engine and we had to develop a design that could use the upper aerodynamics. The car looked frankly awful. First thing that Ferrari told me when he saw it was 'Mamma mia, how ugly!' But after conquering the title, he came back to me saying: 'You know, Mauro, now that I’m getting used to it, I’m starting to find it pretty!'" While the T4 may have sacrificed it's beauty on the alter of aerodynamics the earlier 312 series Formula 1 cars were quite stunning if not ultimately successful.
Forghieri remained with Ferrari until 1987, then joined Lamborghini’s fledgling competition department. Leaving Ferrari, was not an easy decision for Forghieri but the result of a number of issue regarding the state of his employment. With Ferrari's health declining, he was without his greatest benefactor, Fiat's men were all over the racing department and Piero, Ferrari's son was progressively "stretching his wings" and it was past time for Forghieri to leave.
Lamborghini, the rival Italian super car manufacturer was now owned by Chrysler. He would concentrate on advanced special projects which included the development of a naturally aspirated 3.5-litre Grand Prix engine. Chrysler at the time was interested building up a Formula One involvement. The effort never really accomplished a lot and Forghieri only stayed for several years before forming his own firm, Oral Engineering. Today besides his work at Oral Engineering he writes technical articles for specialist journals, and is often invited to talk and lecture on his experiences.