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DATE News (chronologically)
04/17/09
f1
New diffuser boosts Hamilton in China  UPDATE Added photos below showing new McLaren rear diffuser.

Old rear diffuser
New rear McLaren diffuser
04/17/09
  (GMM)  McLaren rushed an interim 'double diffuser' onto Lewis Hamilton's car for the Chinese grand prix weekend.

The reigning world champion then steered the modified MP4-24 to the top of the morning timesheets in Friday practice, ahead of the two dominant Brawns.

In the other McLaren, Heikki Kovalainen is not using the new aerodynamic package, and was fourth quickest, just over three tenths slower than the tweaked car.

While the Mercedes-powered team's fortunes took a boost in Shanghai, reigning constructors champions Ferrari's seemed to dip even lower: Felipe Massa was just fifteenth quickest in an apparently horrendously-handling F60.

Ferrari team boss Stefano Domenicali has confirmed that neither Maranello built car is using KERS this weekend, because the team is no longer sure its system can be run "safely and reliably".

It was also an awful session for BMW, whose Nick Heidfeld was the fastest of the two F1.09s, down in sixteenth place.

The 'diffuser' cars driven by Mark Webber, Jarno Trulli, Nico Rosberg and Timo Glock, meanwhile, were all inside the top eight, followed by Fernando Alonso's Renault.

Like Hamilton, the Spaniard is at the wheel of an interim 'double diffuser' here, following the Court of Appeal's clarification earlier this week that the solution is fully legal.

Practice 1 Results

Pos

Driver Team Time Behind Laps
1. Hamilton McLaren-Mercedes 1:37.334 +0.000 22
2. Button Brawn GP-Mercedes 1:37.450 +0.116 18
3. Barrichello Brawn GP-Mercedes 1:37.566 +0.232 19
4. Kovalainen McLaren-Mercedes 1:37.672 +0.338 23
5. Webber Red Bull-Renault 1:37.752 +0.418 20
6. Trulli Toyota 1:37.764 +0.430 19
7. Rosberg Williams-Toyota 1:37.860 +0.526 24
8. Glock Toyota 1:37.894 +0.560 21
9. Alonso Renault 1:38.089 +0.755 19
10. Bourdais Toro Rosso-Ferrari 1:38.195 +0.861 24
11. Raikkonen Ferrari 1:38.223 +0.889 23
12. Vettel Red Bull-Renault 1:38.274 +0.940 20
13. Buemi Toro Rosso-Ferrari 1:38.307 +0.973 26
14. Sutil Force India-Mercedes 1:38.319 +0.985 18
15. Massa Ferrari 1:38.418 +1.084 20
16. Heidfeld BMW Sauber 1:38.456 +1.122 21
17. Fisichella Force India-Mercedes 1:38.460 +1.126 19
18. Kubica BMW Sauber 1:38.463 +1.129 18
19. Nakajima Williams-Toyota 1:38.730 +1.396 25
20. Piquet Renault 1:38.825 +1.491 20

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