Formula 1 Store | Formula 1 News - August 2005 |
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28 August: Preview, Italian GP 2005 The official Mild Seven Renault F1 Team preview for the 2005 Italian Grand Prix. Fernando Alonso McLaren were very
competitive in Turkey – is that a worry for you? What is it like to drive at Monza? How do you need to adapt the car? You need a very specific set-up there. The team builds new parts only for this race, because it is very strange from an aero point of view with very low downforce, and you need good grip in the corners from the mechanical balance and the tyres. Also, the tyres can get cold on the straights which makes it hard to have good grip in the corners, but Michelin understand the challenge, and they have been fantastic so far this year. What is your view on the championship position? Giancarlo Fisichella Giancarlo,
tell us about your feelings on Monza… What are your goals for the rest
of the year? And what about Monza – will it be a race
you enjoy? Flavio Briatore There have been suggestions that Renault used
team orders in Turkey, after some radio traffic was broadcast on live TV during the race... Even
so, it wasn't difficult for Fernando to overtake Giancarlo… Are you worried about not winning races as
the season draws to a close? Even so, the battle for the
teams' title is getting close… Rod Nelson, Chassis Race Engineer Car No 5 When it comes to setting the car up for Monza, it is all about striking the right balance between absolute chassis and engine performance, and driveability. A very stiff set-up may look good on paper, and better horsepower figures might seem desirable – but if they come at the price of poor driveability or peaky engine performance, they can actually make the car slower. Instead, we need to find the balance between pure performance and useable performance. Unlike many circuits we visit, where downforce is one of our major considerations, drag is studied just as closely at Monza. Of course, the aero department produces wings specifically for this track as it is now so unique in the calendar, and minimising drag is an even greater priority than usual for these Monza packages. The circuit is quite bumpy into turns 4 and 11 (the Roggia chicane and Parabolica), probably because of the circuit's age. However, with the low downforce levels, this becomes more of an issue than usual. In addition, the drivers use the high kerbs aggressively through the first and second chicanes, meaning we run the car relatively soft, and with a forward mechanical bias (stiffer at the front) in order to get the best mechanical grip and good braking stability. In terms of ride heights, there is a performance advantage in running low front ride heights in the slow speed corners. We try to achieve this without touching too much on the straights, and we do so by running bump rubbers on which the car ‘sits' at high aero loadings. It then rises up from these in the slower corners, and the suspension works more conventionally in order to get optimum grip. Of course, Monza is a power circuit – but also one where the cars spend 13% of the lap braking. This means that the brakes undergo severe stress – the high speeds of the start finish straight followed by the low speed turn 1 impose a deceleration of some 300 kph, the making this the most severe corner of the year. Cooling the brakes efficiently is an important area to which the aerodynamicists pay attention ahead of the race. Rémi Taffin, Engine Race Engineer, Car no 5 Monza is the most severe test a Formula 1 engine encounters. The circuit offers no respite, which 71% of the lap spent at full throttle and no sequences of slow corners at low throttle openings. With an average lap speed of 260 kph – compared to a season average of 220 kph – this is comfortably the most severe duty cycle of the season. The high proportion of the lap spent at full throttle means that engine power has the biggest influence of any circuit of the season. This year, with the RS25, we have not only a driveable V10 but also an engine that is competitive in terms of its power output. However, pure power is not the only important characteristic: the engine needs to be driveable from low speeds on the exit of the chicanes at Retifilo and Roggia, and to provide smooth power delivery to allow the driver to take the optimum line through these slower sections. In terms of reliability, the severe duty cycle is clearly a demanding challenge. In addition, the chicanes pose an additional worry as the car's passage over the kerbs can lead to the rear wheels losing contact with the ground – and potentially to either hitting the rev limiter, or to damaging the transmission when the spinning rear wheels land back on the track surface. The violent forces the car undergoes can also potentially have consequences for the reliability of accessory components such as oil and water pumps. In 2005 more than ever, the pre-Grand Prix Monza test will prove useful for the engine team. This test allows us to conduct some of our usual Friday tasks – such as selecting gear ratios and determining cooling levels – during the test, and hence allows us to economise our mileage. With Monza forming half of the most demanding pair of races of the season, with Spa, laps will be at a premium – and each team running fresh engines in Monza will be monitoring closely how they exploit the two-race performance potential of their engine. Any small gains of this nature could potentially prove valuable come the race in Spa next weekend. 2005 Italian Grand Prix - Main Page Latest Formula 1 News from Renault: Renault F1 Team unveils the R27 in Amsterdam (24/01/2007)Renault R27 Technical Specifications (24/01/2007) Bob Bell, Technical Director Q&A (24/01/2007) Rob White, Deputy Managing Director (Engine) Q&A (24/01/2007) Pat Symonds, Executive Director of Engineering Q&A (24/01/2007) Denis Chevrier, Head of Engine Track Operations Q&A (24/01/2007) Giancarlo Fisichella Q&A (24/01/2007) Heikki Kovalainen Q&A (24/01/2007) The World Champion says 'Gracias' (25/10/2006) Interview with Flavio Briatore (06/09/2006) More news from Renault F1
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