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  Formula One rings the changes for 2006   (Agencies)  Updated: 2006-03-03 06:55   
 
 
  
The new engines are expected to deliver around 20 percent less power, with 
around 750bhp likely rather than the previous top output of 950 bhp, resulting 
in lower top speeds and reduced acceleration.
  
Tyre changes After a year of making tyres last for qualifying and the 
race, Formula One will again have drivers making regular pitstops for fresh 
rubber.
  
That could boost the fortunes of Bridgestone and Ferrari, eclipsed by 
Michelin last year but dominant in 2004 when races were sprints between tyre 
changes.
  
Williams and Toyota will join Ferrari on Bridgestone tyres after switching 
from Michelin while Toro Rosso have gone in the other direction.
  
This will be Michelin's farewell season before leaving Bridgestone as sole 
supplier in 2007.
  
Knockout qualifying Qualifying has become a three-part knockout 
affair.
  
All cars will be on the track together at first, with three separate sessions 
in a one-hour period instead of last year's single-lap format with just one car 
out at a time.
  
The slowest six cars in the first 15 minute session drop out and take 
positions 17-22 on the starting grid. Six more are eliminated after a second 
similar session, taking places 11-16.
  
The final 10 drivers then fight for pole position in the decisive 20 minute 
session. Those cars which go out before the final session can be fully refuelled 
before the race starts whereas those in the top 10 can only replace what they 
used in qualifying.   
  
  
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