Big DRS flap v. Small DRS flap

[-Tifosi_dude-]

When DRS was first introduced, teams like Sauber ran a small flap to open their DRS in order to maximize its efficiency (to create a higher top speed). As we have come to see every team adopted the small DRS flap in order to maximize the efficiency of DRS (DRS had unlimited use in practice and Quali) so it was important to maximize DRS efficiency. With the rule changes in 2013, where you can only use DRS in the designated DRS zone in practice, quali and the race, wouldn't it make more sense for teams to have a bigger flap (like Mclaren in early 2011) to have a more efficient rear wing and sacrifice the efficiency of their DRS systems (especially since many teams are also developing passive DRDs)?

TL;DR Why aren't teams running rear wings with bigger flaps due to the reduced use of the DRS in 2013?

This is an article written by Scarbs in 2011, http://scarbsf1.com/blog1/2011/05/20/dr ... pen-wider/, where he says

Currently F1 rear wing flaps are only 10-20 degrees off vertical, to bring the angle of attack down to nearer horizontal will require a large change in AoA. With only a 50mm opening, simple trigonometry will prove that to find the maximum reduction the angle of attack of the flap, will require a shorter flap. Although in its normal position, a smaller flap will not be as heavily loaded with downforce as a larger flap, the reduction in downforcedrag will be greater, due to the change in AoA.

[wesley123]

Since that short chord wings have been further and further optimised. I think that atm the short chord flaps will be the way to go, mainly because DRS and it's advantage within 1 second are still there.