QUOTE (jez6363 @ Nov 23 2009, 23:30)

You really think that changing from driving with KERS to without will make no difference? Also, noone is taking it up because they agreed not to - its clearly a speed advantage.
No KERS will mean learning a new car for Lewis. Every time anyone has made the transition to a KERS car they have a big adaptation phase. I see no reason why they won't have to go through some sort of adaption to learn a non-KERS with-slick heavy car. Sure it won't be as big, but I think it will be as big as Jenson adapting to the non-kers Mclaren after driving the non-kers Brawn.
And the car will have problems too - all the knowledge that Mclaren have about braking with slicks, and traction - was with KERS - in 2010 it will be without, and that will mean they are behind the teams that never ran KERS, in their knowledge of how to set up the cars. Whether it will really hurt them, or just a bit we'll have to see - I think it will be significant enough to keep them off the front for a few races.
I see it differently.
KERS was proven not to be a speed advantage in an F1 car of 2009 vintage. BMW and Renault dropped it, Ferrari saw
very limited success with it, and McLaren saw some success after a massive development push combined with it being used by one of the fastest (the fastest?), most adaptable drivers on the grid.
The simple fact is that the KERS teams over-estimated its value because it turned out that 80bhp for 6.6 seconds was never going to overcome the comprimises to run the system - The bulky sidepods with no/limited undercutting (so important when it comes to feeding the upper diffuser and rear wing elements), the high CoG, the lack of ballast adjustment, the rearward weight distribution etc.
So, I actually think that McLaren will have a bit of a heads up for the 2010 season because a lot of the comprimises of running KERS translate to the 2010 spec cars:
Narrower front tyres = rearward weight distribution
Full race tanks = Bulky sidepods + higher CoG etc.
And as for the braking issue - KERS only typically charged up for a few corners anyway. The rest of the braking was done "normally".