A couple stewards notes for this week. Marc and I ran a 30 lap race here in Super GT cars on Sunday and even though the cars are quite different (more grip), the experience definitely carries over to our event. So here are some observations from our earlier race and practice sessions to date.
Draft:
The draft impact is *huge*. T1 and T3 turn into "catch up" spots and T2 is a fast drivers chance for separation. You can easily make up a second in each of the catch up sectors using the draft. This fact can lead to some interesting strategies to save tires, but I'll let you figure those out.
Also, going wide or cutting in a few places isn't very costly on this track as there are safe runoff areas in many places so we are counting on the honor system this week with penalties off. Don't take advantage of these areas to benefit your position or lap times or tire wear.
T1:
This car is challenging to get through Eau Rouge clean, in particular when following another car closely and on older tires which both lead to more pushing and sliding on the fronts. If you are following/drafting and end up cutting the corner clearly/badly you should NOT draft pass the car in front on the following straight. You should tuck behind and forfeit that opportunity to make a pass. Cutting the corner by accident is just driver error and understandable (if it's not a repeating pattern), but "driver error" should never be used to your benefit.
If, however, you get through Eau Rouge clean this is by far the best place to make a pass. Our observation is that you actually don't want to be following too close approaching Eau Rouge for an optimal pass. You are better off 5-6 car lengths behind than any closer. You will get through the tricky section easier, still be in the draft at the top of the hill and will time your pass after the shallow right and before the next corner. If you are too close you end up having to lift sometime or actually pass too early and open the door for the re-pass... or at least a side by side situation going into the following right, which is tricky business.
Be careful as the car following to brake early at the end of the straight. If you go two wide into the right turn to start T2 someone has to give... be nice and drive clean.
T2
T2 is very technical and will separate the faster from the fast from the slow. It's almost impossible to pass without a serious driver error. But it's the place where you can create a gap to a following driver and break the slip stream. Get ahead by over a second and get a good exit from Stavelot and you have a chance to break free.
Pouhon is another place where you can benefit from going off track by going wide in the double left. Drivers will periodically go a little wide through here as the timing is easy to miss, but it shouldn't be a pattern and you should try to always keep two tires on the track/rumbles. If you find yourself going wide too often in the early part of the race you should make an extra effort to be clean through here in future laps even if that means getting in the gas later or feathering the throttle.
T3
T3 is a good drafting, catch up spot, but it's hard to pass. The long full throttle section is not straight and the optimal driving line is basically an optimal blocking line. Also if you are following it's much harder to make Blanchimont clean so you have to left extra early to make up for the extra speed you are carrying. Going off track on Blanchimont should NOT be a pattern. If you are following or have been going wide in previous laps you should start lifting earlier and staying clean.
Approaching the final chicane is maybe the trickiest spot on the track. If you are the chasing driver in the slipstream you have to brake very early. Don't try to time the brake perfectly if you are following. Instead brake significantly early and then you can feather the throttle to close the gap prior to the apex. If you make a mistake using this technique usually the result is a tap and not a full out punt which will result from a normal, but miss timed braking method.
It gets way more tricky with 3 or more drivers approaching this section and this will happen often, especially early in the track. The first driver cannot brake too early to prevent a chain reaction. The 2nd driver has to brake a little early, but not too much. And the 3rd driver needs to use the very early feathering approach. I have yet to see a clean pass made to the inside under braking... maybe some of you could pull it off, but I think it's going to take quite an aggressive move and be quite risky. I won't try it unless it's the final lap.
If you get punted from behind braking for the chicane and you don't spin, but get shoved off track wide, you can/should just cut the chicane onto the front straight and try to slide into your previous position. Again, you shouldn't benefit from this, but you shouldn't be penalized for getting punted either. The punting driver must yield the position and if the driver that get's punted spins or crashes the punter must wait before the start/finish (on the straight, don't clog up the chicane) and then let the punted driver pass even if it means giving up multiple spots before the driver recovers. In other words... just brake early and don't punt, and if you do please take your medicine.
Tire Wear
Tire wear is terrible at this track. You'll be sliding by lap 6 and earlier if you are really pushing. Even with a two stop strategy at some point you're going to be on a 9 lap run. We've seen an impact of 4-6 seconds per lap easily by the end of the run. Just be aware and go easy on exits on worn tires. Brake earlier on warn tires also, especially prior to the final chicane. The stopping power of the tires drops significantly.
Fuel
You will need to add fuel at some point in the race we're estimating based on testing. The system should pretty much approximate the right amount of fuel needed, but it's not always perfect. No guarantees of course so throw in an extra liter or two if you are worried you'll end up short.
Have fun!