Here is my results after a lot of laps at silverstone. For now i'm too tired for explanations but i will edt this post tomorrow night probably. All the informations are there but it can be hard to figure them out. Note: all my timings are in seconds, this to make it easier to manipulate formulas in excel.
I average 1.48.555 per lap for 33 minut stint 99L of fuel.
And 1.47.582 per lap in 22 minutes stint, 69L of fuel.
Both exluded the 1st lap
More info to come!
Steeve
Edit: Here is more info
Tire wear affect:
I lose 0.066 sec per lap for tire wear. So on lap 19 i am 1.254 sec slower than lap 1 (1 stop strategy) , Compare to 0.858 on lap 13 (2 stop strategy) only talking about tire wear here.
Fuel affect:
Average 0.973 faster each lap for 2 stop = 37.947 sec for 39 laps.
So here are the possibilities :
1 stop strategy = 37.947 lost on track + 47.6 sec pit stop (using Nico numbers which include entrance and exit of pits, but for 100L instead of 92L ) + extra tire wear from lap 13 to 19 and lap 33 to 39 about 2 x 1,386 sec
Total time lost = 37,947 + 47,6 + (2 x 1,386) = 88,319 sec total.
2 stop strategy = No time lost on track + 2 x 40 sec pit stop (again using Nico numbers) + no extra tire wear
Total time lost = 80 sec.
Now you can consider not changing the tires on 1 of the 2 stops and you will save 9.5 sec. Result is you lose only 70.5 sec for stops but you add something around 6 sec. For extra tire wear (that is very theorical and not tested).
My strategy would be 2 stops here. Though there is some trafic to consider and the « theorical » numbers here won't be true if someone is holding you.
Hope this will help you pick your strategy
Will be intersting to compare what other test drivers find. I will be disapointed if its totally different
Steeve
I average 1.48.555 per lap for 33 minut stint 99L of fuel.
And 1.47.582 per lap in 22 minutes stint, 69L of fuel.
Both exluded the 1st lap
More info to come!
Steeve
Edit: Here is more info
Tire wear affect:
I lose 0.066 sec per lap for tire wear. So on lap 19 i am 1.254 sec slower than lap 1 (1 stop strategy) , Compare to 0.858 on lap 13 (2 stop strategy) only talking about tire wear here.
Fuel affect:
Average 0.973 faster each lap for 2 stop = 37.947 sec for 39 laps.
So here are the possibilities :
1 stop strategy = 37.947 lost on track + 47.6 sec pit stop (using Nico numbers which include entrance and exit of pits, but for 100L instead of 92L ) + extra tire wear from lap 13 to 19 and lap 33 to 39 about 2 x 1,386 sec
Total time lost = 37,947 + 47,6 + (2 x 1,386) = 88,319 sec total.
2 stop strategy = No time lost on track + 2 x 40 sec pit stop (again using Nico numbers) + no extra tire wear
Total time lost = 80 sec.
Now you can consider not changing the tires on 1 of the 2 stops and you will save 9.5 sec. Result is you lose only 70.5 sec for stops but you add something around 6 sec. For extra tire wear (that is very theorical and not tested).
My strategy would be 2 stops here. Though there is some trafic to consider and the « theorical » numbers here won't be true if someone is holding you.
Hope this will help you pick your strategy
Will be intersting to compare what other test drivers find. I will be disapointed if its totally different
Steeve