diffuser wrote:DiogoBrand wrote:I've been 'watching' that bulge come and go and it seems very simple. It 'appears' on low speed tracks, which are more demanding on cooling. On high speed circuits it's not there.
Correct me if I'm wrong.
It might have been the Hungry Grand Prix, where someone had mentioned that the rear cover with the bumps was a tighter fit. You could actually tell by looking a the hole in the cover for the rear suspension, more or less of the A-Arm was exposed and the placement of the hole/slot was different.
To me the engine cover never really looked tighter with the bulge on, but I don't know, any difference should be hard to spot.
Another theory is that bulge is part of a higher DF package. If the engine cover really gets tighter when the bulge is there, maybe it's to let more air through to the back to increase aero efficiency. And the engine cover without the bulge lets the air through more cleanly to reduce drag. But this one is really a long shot, I still stand by my first assumption.