How to reduce negative front downforce?

[Okibi]

Start your turn in while still breaking and the weight transfered to the front wheels

[StuwieP]

^ this! so much

I'm not an awesome driver so my times weren't great to start with, but i dropped 3.5 seconds at Sandown just by doing that

So not only did I go from 47.5s to 44.1/43.9s, it felt easier than when I was understeering out of all the corners, which sort of felt faster but clearly wasn't

[davekmoore]

Thanks for the advice. The car is relatively powerful, relatively heavy, and has plenty of turbo lag. It's tempting to plough in with as much throttle on as possible and as early as possible in the turn so the turbo doesn't fall asleep. This is what's been creating the understeer as the combo of trail braking, turning and throttle is too much for one set of tyres.

Think I'll follow the advice of continuing to trail brake to keep weight on the front on turn-in but will try to keep off the throttle for longer.

When the present R888s wear out (soon, sadly!) the 8 inch track wheels will become road wheels with some more comfortable road tyres and I'll look at getting some 9 inch wheels and better tyres fin 225 instead of 205 for the track.

[Magpie]

It s a fine balancing act between keeps enough weight on the rear to keep traction and avoid oversteer. The advice that has been given and greatly received on my performance at SMP South is that I am turning in too early as well. I need to brake later and turn in later, as said by others go in slow out fast.

I have posted this before, but to understand the weight transfer and on this occasion braking at the same time but harder this is the result, too much weight on the front and loss of rear traction. The dotted lines are from a previous lap, with no spin. The spin was actually caused by a very small lock up on the LF wheel and this set the whole chain of events in motion.

I'm not fast but I'm trying to learn and this sort of 'stuff' as well as other peoples advice/comments/demonstrations help however I am the type of learner who needs to understand the theory first.


Spin Breakdown, on Flickr

This shows the rear suspension (red/dark blue). Everything is fine up to about 1.6 secs in this is where the rear suspension started to indicate weight being shifted to the outside (LH).


Spin on Flickr

[track_addict]

Would putting bonnet vents, or a bigger/different location vents in your case, help reduce the lift down the straights/help turn in on high speed corners?

[davekmoore]

Yes, as well as getting heat away from the turbo and letting more cooling through the radiator into a lower pressure area under the bonnet.