AMWEC '15 [Finished]

[squidhead]

Well if there's one place you set up your suspension it's the Green Hell

[strop]

Gee, I thought a calculated economy figure of 10.5L/100km was already quite economical! I'm not surprised that the NV810 pitted a fraction of the number of times to my car, given it's much lighter, and is using hard tyres. There's nothing to be done about that given the minimum weight requirements for AGTE versus AP1-2.

For anybody still surprised at the discrepancy in the numbers though, note that I opted for separate pit stop strategy, because when I was running my simulations, I found on average the time gained by running the tank to empty was greater than the extra time spent in the pits refuelling and tyre changing at the same time, minus the extra time spent driving through pit lane. I would have had to refuel 5 times, and had 12 stops for tyres, so that checks out nicely. That is to say, the choice was between running the tank from full 12 times in the race... versus driving through the pit lane an extra 5 times. I imagine most everybody else would not have chosen as I did, therefore my number of pit stops would probably be one of the highest. I wonder how that translates to time spent in pit lane.

Overall though, I think there was maybe a 0.3% difference in total averaging out several runs on both strategies. I think I was also lucky not to have any accidents, since pitting twice is pretty much like losing an entire lap.

In GG style, let it be said now that our partnership with Znopresk is the signal of our intention to develop and compete at the highest level with factory backing. Being a small company, the only way for GG to cause enough impact at this critical juncture, is not only to win the AGTE class, but the overall tournament. Can we do it?

[AirJordan]

That More I am reading your figures more becomes obvious where is that 20 lap difference to my cars. What worries me is that even with your superior driveability, economy and harder tyres, fastest lap time is still almost 2 sec faster than mine...


How did wagons perform?

[KLinardo]

I have a feeling that drivability is turning out to be a huge factor in this competition due to the pit stop requirements.

[Sebesseg]

Gee, I thought a calculated economy figure of 10.5L/100km was already quite economical!

It is. The, though, LMPC has an economy figure of 26.7 US MPG or 8.8L/100km (I think, google converted it for me). It, also, only has 590HP, which is 95 less than the 685 you cited earlier. Drivability, reliability and econ are very good for the LMPC, but its lack of HP and subsequent lack of top speed looks to be its downfall.

[acemaster25]

I'm surprised that my AGTE did better than my AP1, maybe I should have spent more time looking at stats and lap times.

[Sillyworld]

For anybody still surprised at the discrepancy in the numbers though, note that I opted for separate pit stop strategy, because when I was running my simulations, I found on average the time gained by running the tank to empty was greater than the extra time spent in the pits refuelling and tyre changing at the same time, minus the extra time spent driving through pit lane. I would have had to refuel 5 times, and had 12 stops for tyres, so that checks out nicely. That is to say, the choice was between running the tank from full 12 times in the race... versus driving through the pit lane an extra 5 times. I imagine most everybody else would not have chosen as I did, therefore my number of pit stops would probably be one of the highest. I wonder how that translates to time spent in pit lane.

The AGTE cars have the biggest fuel tank (90 liters), so they will benefit greatly to run to almost empty fuel tank, because of the extra weight. The AP1 cars on the other hand, they have the smallest fuel tank (68.3 liters), using hard compound tires and refueling when changing tyres (like the NV810) translates to less pit stops.

It is. The, though, LMPC has an economy figure of 26.7 US MPG or 8.8L/100km...

The LMPC (as I remember) have the highest fuel efficiency, it only stoped 3 times for more fuel, 1 for new brakes, and 8 for new tires.

but its lack of HP and subsequent lack of top speed looks to be its downfall.

And of many other cars, they have good stats, but a low top speed, specially for the AP1 and AP2. I had to add weight to my AP1 car to be able to use more power and have a more decent top speed.

So yeah, driveability was quite a factor...oh well hahaha

I have a feeling that drivability is turning out to be a huge factor in this competition due to the pit stop requirements.

Hahaha, it was stated since the beginning, the more drivable the car is less likely to have accidents... and the more reliable the less likely those accidents will need repair

I'm surprised that my AGTE did better than my AP1, maybe I should have spent more time looking at stats and lap times.

so my AP2 Prima is on podium, even on first place. thats really out of my expextation actually my AP1 pretty much on my expectation, but my AGTE is somewhat disappointment. guess i shouldn't forget to think power/weight ratio when im tuning my weight distribution on my AGTE

Same with me, I put almost all of my effort in the AP1 and AP2 cars and y AGTE was only to compete on the 3 classes... oh well...

How did wagons perform?

Not so good

[iRaptor]

I've got around 8.5L/100KM for my AP1. 850.1KG aswell and more than 54 drivability. I'm quite slower than anyone in the TOP10 as you can see.
However I regret I haven't done any AGTE entry. I would have applied the exact same principles I used on my prototypes.

Quite pleased by my AP1 results. However my AP2 is rather disappointing. Should be alot better in Sao Paulo.

Well done to the podium lads! Quite an impressive feat with Strop by winning with an AGTE.

I'd be curious if anyone here considered an increase of the power/weight ratio for the prototypes?

[Sillyworld]

In GG style, let it be said now that our partnership with Znopresk is the signal of our intention to develop and compete at the highest level with factory backing. Being a small company, the only way for GG to cause enough impact at this critical juncture, is not only to win the AGTE class, but the overall tournament. Can we do it?

Yes, you can win the World Endurance Champion Car title and the Gran Touring World Cup (and with an outstanding performance and with a lot of luck, the manufacturer's title).

I'd be curious if anyone here considered an increase of the power/weight ratio for the prototypes?

On the first draft of this competition, I thought of a 0.55 hp/kg for AP2, 0.51 hp/kg for the AGTE and 0.69 hp/kg for the AP1. The result? a HUGE gap between cars, like 5 seconds in each lap. So I set it to 0.55, because I wanted the drivability as an important factor (and a 591hp car with 850kg will have an average of like 20 drivability), plus I hate the current WEC series because the LMP1 cars are very overpower. I mean, the GTE cars have no chance, the LMP2 cars are just boring and it seems they are only there to cause accidents and traffic to the LMP1 cars. I wanted something more balanced and competitive.

EDIT That said, I will plan of doing a 90's 24 hrs of le mans (before the AMWEC '16), with LMP, GT1 and GT2 classes, with higher power/weight ratio.

[strop]

(too late to edit so new post) my bad, my economy figures were more like 11.5L/100km. Or something like that.

As I said earlier, the secret to tuning a car in Automation that is fast not on just one track but all tracks is in making the suspension suit the weight distribution of the car. That is to say that the relative stiffness of things will be approximately proportional so that the car's grip balance is as neutral as possible. This proportion must also be balanced out with the tyre widths, which are also somewhat proportional. This isn't a completely hard and fast rule, but it is helpful in knowing where to start. It's all about managing the stiffness versus the compliance of the contact patch and everything with which the force that travels through it communicates: compliant enough not to lose grip, stiff enough not to roll around and lose feedback.

Also, loads of negative camber overall is better for cornering hard, but too much negative on the front relative to the rear will cause steering instability.

Aero is another thing: I'm not even running close to full attack angle on the downforce, because the efficiency of the wings etc. goes down a lot compared to when it's at, say, 50. It really kills top end acceleration and I learnt the hard way that if you have too much drag, there's no point if your car can't even reach the speed that it can take the corner!

[iRaptor]

(and a 591hp car with 850kg will have an average of like 20 drivability), plus I hate the current WEC series because the LMP1 cars are very overpower.

While the overpowered argument is perfectly understandable, I can guarantee you that I've done a car with the quoted hp/kg, and I'm very close to my AP1 entry in terms of drivability.
Maybe something like 0.65, 0.60 and 0.55 ratio would have been good enough?

Well, talking about weight distribution, my prototypes are far from good at this point. A 30/70 balance didn't help tyre-wise, however my AP1 entry would be my only trim which would have had a benefit. I think I had to pit with 17l left according to my calc sheet.

[AirJordan]

EDIT That said, I will plan of doing a 90's 24 hrs of le mans (before the AMWEC '16), with LMP, GT1 and GT2 classes, with higher power/weight ratio.

I'm in

After this race I would definitely reconsider my designs, especially AGTE.
I really enjoy reading about all your stats and tunes guys so keep it up

Gosh I am already looking forward to next race

[Speedemon]

NEWS FROM CAC

CAC has decided to make a AGTE car and possibly a AP1 or AP2 car. The AGTE car has been said to be based off of their concept sports car, which will be released sometime in the near future. The AP1 and 2 cars have not yet been confirmed, but what we can say is our sights are headed more towards an AP2 car.

Look out for our latest model on the NEW CAC page!
The car is set to be released today or tomorrow.

[strop]

Either you're a bit late, or very early to the party! I'm so confused right now.

[KLinardo]

I read that and thought he was preparing for future seasons, but now I'm slightly confused as well.