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I was thinking more along the lines of the rear swing downforce on the new BMR stiffer rear springs. The 2020 had softer rear OEM springs to absorb the downforce and deliver it to the PSC2's, if I am correct. They handle great on the street but this is a dedicated track car.The only thing suspension can do to alter aero (disregarding exposed suspension cars), is rake and underbody aero. Regardless, I doubt either would be significant on a stock car.
Springs don't alter downforce except for a brief moment when they're compressing or stretching from one length to another. Stiffer springs don't move as far, so they actually deliver forces quicker than a softer spring.... The 2020 had softer rear OEM springs to absorb the downforce and deliver it to the PSC2's, if I am correct...
Would the "R" spoiler be more appropriate then?Springs don't alter downforce except for a brief moment when they're compressing or stretching from one length to another. Stiffer springs don't move as far, so they actually deliver forces quicker than a softer spring.
Yes, I am extremely happy with the lower setup now with the flatter platform. Track day shake down last week and the thing stuck like super glue to the track. Also had added -3.5 camber. Road America coming up next week, excited to feel any difference.I have the bmr springs on my '18, they lower the car slightly but also take out the rear high rake. It is pretty much level. On paper, the lower ride height will help the front spoiler/splitter a little bit, and reduce the angle on the rear swing/gurney, which will reduce the downforce. So the aero balance could shift forward. In practice, the most notable change is the stiffer, flatter, platfrom which gives you more confidence, and helps tire wear. Can't feel any aero difference.
I think you guys are mixing up weight distribution with aero balance.Yes, I am extremely happy with the lower setup now with the flatter platform. Track day shake down last week and the thing stuck like super glue to the track. Also had added -3.5 camber. Road America coming up next week, excited to feel any difference.
I believe that's what I did, stiffer lower springs, stiffer front sway bar.I think you guys are mixing up weight distribution with aero balance.
They only way suspension will alter your AERO balance is if there’s a change in ride height difference (front to back). Adding rake (larger drop at the front vs rear) will increase the weight over the front wheels and make the car more “pointy” or oversteery. The increased drag or downforce from the slightly higher angle of attack will honestly be negligible. Ride height, dampening and sway bars will be way more apparent when setting up a car like the gt350.
So, since I've eliminated the angle of attack, and added the stiffer handling springs/suspension mods, and the "R" front splitter, do you thing the swing w/Gurney flap has much of an effect?From what I've experienced, rake is a massive deal for aero, both in Porsche Cup and GT4, The angle of attack makes all kinds of strange things happen, In P cup it was common to run negative rake to cancel out some of the rear wing to get down the straights.
I'm not a fan of wickerbills, I think they reside in the area of " demon tweaks", one of the things that we did at Daytona on @flyhalf 's car was pull the wicker off to dump some of drag at Daytona. If I were you, I would completely mimic the aero on the Gt4 car. Ford spends tons of money in wind tunnels to get a balance, then we go out experimenting and messing it up. IMO adjust the cars suspension, then tidy it up with the aero.So, since I've eliminated the angle of attack, and added the stiffer handling springs/suspension mods, and the "R" front splitter, do you thing the swing w/Gurney flap has much of an effect?
There where I was when i started this thread, was the wicker bill causing to much drag or not the desired effect at all, and would the "R" wing be better, or as you suggested the GT4 setup.I'm not a fan of wickerbills, I think they reside in the area of " demon tweaks", one of the things that we did at Daytona on @flyhalf 's car was pull the wicker off to dump some of drag at Daytona. If I were you, I would completely mimic the aero on the Gt4 car. Ford spends tons of money in wind tunnels to get a balance, then we go out experimenting and messing it up. IMO adjust the cars suspension, then tidy it up with the aero.
Wickerbills are a huge drag inducer, but if you get you where you need to be, then go for it.
Pull the wicker first, it's the cheapest and most expedient routeThere where I was when i started this thread, was the wicker bill causing to much drag or not the desired effect at all, and would the "R" wing be better, or as you suggested the GT4 setup.
10-4 thank youPull the wicker first, it's the cheapest and most expedient route
Just don't let it come as a surprise, you're gonna dump a bunch of downforce10-4 thank you
Is the GT500 wing comprobable to the GT4?Just don't let it come as a surprise, you're gonna dump a bunch of downforce
Not sureIs the GT500 wing comprobable to the GT4?