Technical illustration of Williams’ 1997 Mini Alettone rear wing concept, showing the compact low-mounted wing and rear suspension layout.
We continue our journey by bringing you the test stories and technologies that were tested and failed before reaching the grid. Some of them even made it to practice, while others actually raced before being abandoned or banned. For our next topic, we are going back to 1997, when the Williams F1 Team tested something quite unusual, the “Mini Alettone” wing.
The Italian circuit has long been one of the fastest venues on the F1 calendar, its straights reward a car that can cut through the air efficiently, while the heavy braking zones and relatively low-downforce corners create a difficult aerodynamic compromise. Too much wing costs valuable speed on the straights, too little wing can leave a driver fighting an unstable car through the corners.
Editor’s note: What I remember from the past is that one team that raced with a different kind of wing was McLaren in 2007, when they introduced a special front wing for Monza. It worked perfectly for the low-downforce circuit and helped Alonso win the race at Monza that year.
Williams in 1997, using Renault V10 engines, decided to explore just how far that compromise could be pushed, during a three-day test at Monza, the reigning world champion team experimented with an extraordinary rear-wing concept that looked almost too small to belong on a modern F1 car, the design became known among enthusiasts as the ‘mini alettone’, or miniature wing.
Mounted at the rear of the Williams, it represented an extreme attempt to strip away aerodynamic drag and turn the car into a high-speed machine for Monza’s long straights, it was clever, it was radical, and ultimately, it wasn’t successful enough to race.
The Williams FW19 Mini Alettone wing
The unusual wing became one of the more memorable aerodynamic experiments associated with the 1997 Williams, rather than attempting to create a large amount of downforce, the concept focused almost entirely on aerodynamic efficiency.
The wing was extremely small and produced only a fraction of the rear load generated by a conventional F1 rear wing, that didn’t necessarily mean the rear of the car had to be completely without aerodynamic support.
The Williams’ floor and diffuser were already important sources of downforce, ground-effect-style aero principles had become increasingly sophisticated in F1, allowing teams to generate substantial aerodynamic load underneath the car rather than relying entirely on exposed wings, Williams was therefore exploring a different distribution of aerodynamic performance.
The idea was essentially to let the floor provide as much grip as possible while removing the rear-wing drag that was slowing the car on the straight.
The Mini Alettone kept the same 100 cm width as Williams’ standard rear wing, but its height was dramatically reduced. Instead of reaching the 80 cm maximum height, the main wing plane sat only about 45–50 cm above the ground, making it look tiny compared with a conventional F1 rear wing.
Monza appeared to be the perfect place to try it, in practice, the experiment demonstrated why F1 aerodynamic compromises are rarely as simple as they look!
Jacques Villeneuve Put the Idea to the Test
Jacques Villeneuve was the man tasked with evaluating the radical configuration, the Canadian had arrived in F1 with enormous expectations and, by 1997, was driving at the front of the field, he was also preparing for a championship fight, meaning Williams had to understand exactly what its car could and couldn’t do at different circuits.
Testing an unconventional aerodynamic package was therefore valuable even if the design never appeared in a Grand Prix, Monza test gave Williams the opportunity to gather data under conditions that couldn’t easily be reproduced in a wind tunnel.
The car could be sent down the long straights, measured for top speed, and then driven through the corner to determine how much performance had been sacrificed, as the results revealed the central problem with the mini alettone, the car could certainly exploit its lack of drag, but going fast in a straight line was only part of the lap.
Faster on the Straight, Slower Around the Lap
This was the fundamental weakness of the concept, with very little rear-wing drag, the Williams could reach impressive speeds on Monza’s long straights, the problem appeared when the driver had to turn.
Monza may be famous for its straights, but the lap isn’t simply a drag race between corners, the car still has to negotiate the first chicane, the Lesmo corners, the Ascari complex and the Parabolica, those sections demand confidence in the rear of the car, especially Ascari and Parabolica.
The driver need the rear tyres to remain loaded when braking, turning and applying throttle, remove too much aero support and the balance can change dramatically, for Villeneuve, the ultra-low-downforce Williams became much more difficult to manage.
If the driver had to brake earlier because the rear of the car was unstable, some of the straight-line advantage was immediately lost, if he had to wait longer before getting back onto the throttle, more time disappeared on corner exit, the tiny wing was therefore accomplishing its primary objective while failing to deliver the performance Williams actually needed.
This is where the theoretical advantage of the concept began to disappear.
Another story: Active Suspension of Williams F1 Team Explained
The Rear Tyres Created Another Aerodynamic Problem
There was another interesting complication with the tiny wing, its extremely low position meant that it was operating in a difficult aero environment around the rear of the car, the rear tyres themselves are enormous compared with the tiny wing element, and they generate substantial turbulence as air moves around them.
A large, conventional rear wing is positioned to work with the airflow passing over the car and around the rear bodywork.
With mini alettone was much closer to the turbulent region created by the rear wheels and surrounding components.
Instead of receiving perfectly clean airflow, the small wing could find itself working in disturbed air, that reduced the effectiveness of an already tiny aerodynamic surface, this is one of the fascinating aspects of the experiment, making a wing smaller doesn’t automatically make it more efficient, aero is about the entire airflow structure around the car, a component that looks beautifully simple in isolation can become considerably less effective once it is installed on a complete racing car.
Why Williams Did Not Race It
The most important point about the experiment is that the mini alettone wasn’t used in the 1997 Italian GP.
The team gathered the information it needed from testing, and the extreme configuration didn’t provide enough overall performance to justify its disadvantages, the team ultimately settled on a much more conventional low-drag rear-wing solution for the race weekend.
A prototype doesn’t have to be successful to be useful, Williams had deliberately created an extreme aerodynamic setup to answer a question: how much lap time could be gained by sacrificing rear-wing downforce in exchange for reduced drag?
The answer was effectively that Monza still demanded more aerodynamic stability than the tiny wing could provide.
Another Story: Williams FW08B F1’s Six-Wheeled Car
A Forgotten Piece of Williams’ 1997 Story
The 1997 Williams season is remembered for championship battles, but the tiny Monza wing is a much less famous part of that story.
Yet it perfectly captures the mentality of F1 engineering during the period, teams were constantly searching for tiny advantages, sometimes those advantages came from a new suspension component, sometimes from the front wing, and sometimes from an aerodynamic idea that looked almost absurd compared with the conventional solution.
Williams’ miniature rear wing was one of those ideas, it looked futuristic because it was pushing the concept of low drag to an extreme, the image of a powerful 1997 F1 car carrying such a tiny rear wing is still striking today!
However, Villeneuve ultimately took the title in 1997 after battling Michael Schumacher throughout the season. The championship drama reached its climax at Jerez, where their collision ended Schumacher’s title hopes and led to his disqualification from the championship standings.
