and the tires spun and the car started around as soon as I lifted enough to stop the spinning the car immediately straightened out with the new vertical stabilizers.
So---was it the re-established traction or the vertical stabilizers that regained directional control? If the stabilizers were effective in providing aero stability it shouldn’t have gone very far around and should have corrected the yaw even with the rear tires still spinning.
On the brief WOT tests I think it was a combination of both that settled things right down. The car never jumped around to the same extend that it did when the the throttle stuck WOT with the tires continuously spinning. That time I think the fact that it did not go all the way around indicates that the verticals did stop it.
I feel there is a big difference in if the CP is just a little behind the CG or a lot behind and the results you could expect to see on the aero stability. At this point we don't know where the CG is as it was a thrash to just get the car to the salt even 3 days late. We didn't have corner weights or where the CG was after all the changes to the car and still don't have a good side view to work with to try and figure the CP. We need to get that done and if someone has a side view from a distance I'd sure like to have it.
With the 8 lb. springs in the wastegates the car was probably gaining around 250-300 HP in less than a second as the car went from no boost to 8 lbs. with the throttle going from 40% to 100% instantly. We now have 2 lb. springs in the wastegates and that should help since we can then use the E-boost controller to increase the boost over the 2 lb. in more controllable steps. So a more normal application of the throttle would of probably not resulted in the car jumping out at all. I was just playing at the time with 'what if I do this'.
I'll share one other item here. Our two turbos have an AR of 1.32 which most people will shy away from thinking they will spool too slowly. A second to spool at the drags might be slow but for what we are doing you don't need them to spool faster. Granted the 572 is big but I'd stay with the same AR even with a much smaller motor. We are trying to slow the power coming on in our case, if you can hook all the power you can make with a turbo up right away then go with a smaller AR, but I doubt that is the case most of the time,
Sum