I don't see how half of lewis's time lost in sector 2 was due to actually going 1kph faster at the speed trap. I think you might have that backwards a little.
I have that backwards a lot!

Still, going back the other way, that's 3 tenths for 4 corners, less than a tenth per corner for 50% less downforce. Eep, you're gonna make me get my calculator out!
If anything, sector 2 is the only location the KERS/engine could attempt to offset the lack of down force and cornering speed. Thats why they only lost .216 of a sec there (rather than almost a second on the other sectors).
Theres less corners is really all it comes down to.
Yes, when your car lacks downforce - you try to regain it by adjusting the wing, but a wing adjustment will not give you that much more than someone that hasn't had to crank it up, and modifying the wing will impact your drag, it's not a very efficient way of generating down force.
No it's not, but we're not talking about efficiency, they had very similar top speeds (Seb and the Maccas) so the KERS and engine advantage is being traded for downforce. The downforce being created because of a better engine, or because of a better wing design doesn't matter to tyres as they're being pushed to the ground
Also, regarding the 50% down force. I think that if anything, 2006 down force would of been less than 2008 - considering there were no new aero restrictions placed between 2006 and 2008. Call me crazy but usually they work on improving aero performance.
I was just saying it's hard to compare 2008 to 2009 times, with targets set based on 2006 rules, on top of the tyres being changed massively.
It's not like going to 50% less down force is going to make a car go %50 slower or anything. It's a heck of a lot more marginal than you might think. Down force only helps cornering speed along with other factors, and actually hinders straight line speed.
No, ofcourse not, though in our case, downforce is a purely positive factor with no negative trade off, as the top speeds are the same.
At this point, using my rudimentary knowledge of vehicle mechanics and my Opera scientific calculator widget, I've come to the conclusion that I'm more wrong than you are. So boo. If someone had've asked me to take all of the downforce off the cars around Melbourne but keep their current top speeds, I would've guessed they'd be ~20 seconds off the pace, though that doesn't appear to be the case.
I used: velocity = square root of (coefficient of friction of the tyre* x [weight + downforce generated] x 9.8 x radius of the corner / the mass of the car)
* 1.4, yoinked from Simon McBeath.
I gave RBR a base number of downforce (I guessed they'd create maybe 200kgs of downforce at 100km/h or so) and McLaren half that, and for a 90 degree corner from turn in point, to exit point at a "perfect" tyre limited speed, the McLaren would lose about .19 of a second per corner. By the 16 corners of the track that comes out to roughly 2.57 seconds, add in another second for time lost under braking, and maybe time lost under acceleration and it comes to say 4 seconds.
So, on one hand, Ham is still BS, but hrm, the time loss was interestingly low. HRT must really suck. Oh, and you tricked me! Ham didn't do a lap in Q2, the difference between Seb and Heikki was 6 tenths. So yes, back to Ham making stuff up, 50% less downforce my butt!
P.S: Worked backwards using that 6 tenths gap and 16 corners, obviously this is uber dodgy, but came out to about a 10.8% defecit in downforce, which costs about 0.04 secs per corner.
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Edited 1 time(s). Last edit at 22/03/2010 09:46 by LoudHoward.