mprog

That gurney flap…

do you have some simulation data as to the downforce it creates?

does it fit the 718 GT4 (not RS) ?

DomTheBomb

@SilverRocket Racing Are these carbon fiber parts finished in a gloss or matte finish?

RDCR

The Dive planes are a matte finish. I've seen the CS wing and it appeared to have a matte finish as well.

Kimbleli

Yes, we do, that's why we have the Aero balance table for all our aero parts.

Kimbleli

All SR CF parts are mate finished.

mprog

i was asking about data on the gurney flap only.

Kimbleli

Below are CFD result solely on front diveplane sets:
At 200 km/h (125 miles/h), SR CS Dive Plane can increase the front axle downforce by 17% in synergy with the extended front spoiler, side aero cover kit, and side covers.
At 200 km/h (125 miles/h), the SR PRO Dive Plane can increase the front axle downforce by 32% (15% more than the SR CS dive plane) in synergy with the extended lower side spoiler, side aero cover kit, and side covers.

lovetoturn

The question is 17% or 32% of what?

I have not seen anything about what the aero balance is for the GT4 RS. The GT4 was stated to be 20/80 and the GT3 RS is stated to be a constant 30/70. So I have been assuming that it would be between 20/80 and 25/75 or roughly 22.5/77.5 figuring they would not deviate too far from the OEM 20/80 since AP says it is not a full blown track car. As the downforce jumps from about 330 for the GT4 up to a stated 488 for the 4RS, I think they would have had to move upwards at least a little for the front end on the 4RS.

20.0/80.0 = 98 / 380 pounds

22.5/77.5 = 110 / 378 pounds

25.0/75.0 = 122 / 366 pounds

So there is a difference of 24 pounds here depending how you want to look at it per my estimations. So 17% of 110 is about 19 pounds and 32% is about 35 pounds. I think you could also use two of the smaller canards on each side for more of an OEM look and still get 30+ extra pounds of downforce. Keep in mind that in doing this you will need to add about 3 times that to the rear of the car to keep it in balance.

Do we have a gurney flap for our 4RS wings on the horizon guys? A 12-15mm gurney could add another 15% to the back wing or about 45 pounds of downforce. The rear wing has about 300 pounds of downforce and the rear diffuser has a stated number of 81 pounds of downforce make up the full rear downforce numbers.

RDCR

What exactly are the "side aero cover kit and side covers"? I know SR has 2 different dive plane sets and the splitter extensions. Are you talking about the OEM Aero on the front fenders?

Kimbleli

Sorry for the confusion, SR is offering two types of diveplane to fine tune the front downforce:
CS Version Dive Plane is similar the one on Porsche GT4RS Clubsport race car, it increase 17% front downforce than OEM setup.
Pro Version Dive Plane is similar the one on 991 CUP , it produces 15% more than CS Dive planes.

CS Version Photos:


Pro Version Photos:

DomTheBomb

Being slightly pedantic here, but it's
CS: 17% more front df over oem
PRO: 32% more front df over oem (not 15% more than the cs, which would imply 34.55% more than oem)

Kimbleli

You are right! I ignored the compound facts. Thank you for pointing it out.

Let me clarify it in correct way:
CS Version Dive Plane is similar the one on Porsche GT4RS Clubsport race car, it increase 17% front downforce than OEM setup.
Pro Version Dive Plane is similar the one on 991 CUP , it produces 32% more front downforce than OEM setup, which is 12.8% more than the CS Dive Plane.