Good video. Last year I borrowed a (rep) J's type one wing for my ap2. I made no changes to the car whatsoever, have no front splitter, stock shocks with swift spec r springs, and I loved the difference the wing made. I dropped .6 seconds of my best lap. There would be more in it too but the replica wing stands had extremely limited adjustability. My favorite part was the lack of rear end twitch on high speed sweepers, and the ability to get on throttle sooner coming out of corners with much greater confidence. I also saw higher peak speeds with the wing. When I went out for my first session the wing was set at maximum attack, and my peak speeds were down nearly 20mph from wingless. That's when I saw firsthand how much of a difference it could make!
Nice improvement! Aero is magic! Get some front splitter + gurney flap on the rear, + reduce the air pressure in the wheel arches. Next time maybe try Federal FZ201 in the same size, they are not that expensive, or Nankang AR-1, current favorite R comp in Europe, best price/performance.
The s2k design has generation of rear end lift. What if possible to reduce/delete parachuting effect of rear bumper to have no wing via cutting bumper/diffuser? I'm asking this question in applying to a stock/ mostly stock body i.e.) minimal/non aero body Correct me if I'm wrong but simple analogy has it that wing = air hammer and reduce parachuting/ diffuser = air guide Then you have the "nascar duckbills" they seem to spoil air and perhaps generate some low hundred #s of force? AFAIK the not as aggressively raked decklids come in as Tamon Design and Back Yard Special. Will a Tamon or a BYS function as intended or more for aesthetics with air spoiling but minimal/no pounds of down force?
Yes aero makes a difference at all speeds. The better the aero the better the difference. Just with good aero you could do sub 2:00 lap. If you're really good at making aero you can do sub 1:50's but most of us S2k folks are aero amateurs at best. Just running wings or basic splitters, maybe some do a flat bottom/diffuser, but they're doing something very basic. The devil is in the details, just adding a 5mm gurney flap on your wing would probably give you another few tenths worth of downforce. The rear fenders need strakes to clean up the air flow as this is the biggest source of skin drag on the car(not many people are willing to butcher the nice look of the s2k to get functional aero). Controlling tire wake goes a huge way to reducing lift, reducing the air pressure in the wheel arches adds just as much downforce as the wing you're running.
sure it's the just the tires and not the placebo effect of having a wing? testing one thing at a time would be a more accurate representation of how much difference the wing really makes.
Great video as always man! How wide are your wheels? From the pic at 3:52 they almost look...... not wide enough? idk.. I have 8.5" wheels and run 255/40-17 RS3's all around and they fit flat. No bulge, no stretch.
Good video. Last year I borrowed a (rep) J's type one wing for my ap2. I made no changes to the car whatsoever, have no front splitter, stock shocks with swift spec r springs, and I loved the difference the wing made. I dropped .6 seconds of my best lap. There would be more in it too but the replica wing stands had extremely limited adjustability. My favorite part was the lack of rear end twitch on high speed sweepers, and the ability to get on throttle sooner coming out of corners with much greater confidence. I also saw higher peak speeds with the wing. When I went out for my first session the wing was set at maximum attack, and my peak speeds were down nearly 20mph from wingless. That's when I saw firsthand how much of a difference it could make!
Good you decided to get the wing and good tyres. Taming the s2k's unruly rear end is only fun for 1 or 2 laps.
Now imagine running a Type 2 J's wing or a double element Voltex with a front splitter ;) can be flat in so many more places
Nice improvement!
Aero is magic! Get some front splitter + gurney flap on the rear, + reduce the air pressure in the wheel arches.
Next time maybe try Federal FZ201 in the same size, they are not that expensive, or Nankang AR-1, current favorite R comp in Europe, best price/performance.
Do you have a bent trunk?
The s2k design has generation of rear end lift. What if possible to reduce/delete parachuting effect of rear bumper to have no wing via cutting bumper/diffuser? I'm asking this question in applying to a stock/ mostly stock body i.e.) minimal/non aero body
Correct me if I'm wrong but simple analogy has it that wing = air hammer and reduce parachuting/ diffuser = air guide
Then you have the "nascar duckbills" they seem to spoil air and perhaps generate some low hundred #s of force? AFAIK the not as aggressively raked decklids come in as Tamon Design and Back Yard Special. Will a Tamon or a BYS function as intended or more for aesthetics with air spoiling but minimal/no pounds of down force?
I would have ran a steeping angle wing for anything under 120mph
Yes aero makes a difference at all speeds. The better the aero the better the difference. Just with good aero you could do sub 2:00 lap. If you're really good at making aero you can do sub 1:50's but most of us S2k folks are aero amateurs at best. Just running wings or basic splitters, maybe some do a flat bottom/diffuser, but they're doing something very basic. The devil is in the details, just adding a 5mm gurney flap on your wing would probably give you another few tenths worth of downforce. The rear fenders need strakes to clean up the air flow as this is the biggest source of skin drag on the car(not many people are willing to butcher the nice look of the s2k to get functional aero).
Controlling tire wake goes a huge way to reducing lift, reducing the air pressure in the wheel arches adds just as much downforce as the wing you're running.
Great info here, thanks! Going to keep pushing my car with no aero and get as close to 2:00 as possible before going down the rabbit hole.
I run no rear bumper. Takes care of the "parachute" effect, and doesn't butcher the look as I get home and put the bumper back on :)
sure it's the just the tires and not the placebo effect of having a wing? testing one thing at a time would be a more accurate representation of how much difference the wing really makes.
what do you mean when you say "let the car turn in naturally" 4:40 ?
did anyone saw that Mustang at the end bahaha
interested in trying out the Federal RS-rr tires in 215/245. I have AD08R in 215/245 on AP2 s2000
Great video as always man! How wide are your wheels? From the pic at 3:52 they almost look...... not wide enough? idk.. I have 8.5" wheels and run 255/40-17 RS3's all around and they fit flat. No bulge, no stretch.
Arthur Sperotto They are 17x9. The 255 Federals seem to run significantly wider than any other 255 I've seen.
Have you done Counter Clock Wise on Button?
I have not, but looks fun!
Two questions:
Hankhook RS4 or Federal 595RS-RR
Project Mu Club Racer or Winmax W5?
HK Mc Lui rsr's. Best value for money.
If you can tolerate the road noise, 595RS-RR for the price. Winmax W5 > Pmu CR
How does the federal rs-rr vs the falken 616k+ ?
Was this the ongrid feb 11th event?
Yep!
Zygrene I was too! What’s the next event you’re hitting?
Shooting for Thunderhill West on 3/17
Do you have stock sway bars front and rear?
Stock AP1 front and AP2 rear bars