With an eye on greater parity, Supercars will re-homologate all eligible models at the end of the 2019 season.
Aerodynamics have been a major point of discussion this year, with all three models tweaked in-season. Notably, the Commodore package was altered heading to the most recent event in New Zealand, which produced immiedate results.
An improved version of the Supercars Controlled Aerodynamic Testing (VCAT) process will take place at the end of the current season.
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Supercars is eyeing a drop in downforce for 2020 compared to 2019-spec cars, which will encourage even competition across the Ford Mustang, Holden Commodore and Nissan Altima.
Downforce on all cars is expected to be reduced by around 15 per cent, although there has been speculation of a drop as high as 40 per cent.
According to Supercars technical boss Adrian Burgess, the initial drop won’t be as significant, but left the door open to further changes down the track.
“Long-term, it might be something that we look at more seriously, and take a larger amount away,” Burgess said.
“At the moment we’re going to do it in such a way where we’re not creating teams that go and design new this, and new that, and new this.
“It’s just a first small step in a direction where I think every category is looking around the world, in terms of taking downforce off the cars.”
The introduction of the Mustang sparked the parity debate, with the first iteration of the model signed off by Supercars following VCAT testing late last year.
However, all three models have since been altered across the season in the quest for parity, with six in-season adjustments made.
An active ride system has been developed by Supercars for the process, with simulated ride height settings able to provide clearer insight into aero.
Burgess discussed the “improvement to the whole process” with an active damper to be used to acquire accurate measurements.
“We’ve improved the process, how we do the VCAT will change,” he said.
“We’ve been developing an active ride system, so we could put the car in as many different ride height configurations as we want.
“[The active damper] won’t be something we go and race on, it’s something purely for measuring the downforce on the cars.
“It uses load cells, it can measure the force being generated, and we can change the ride height of the car one millimetre in 150 milliseconds, we can change the front or rear ride height.
“We’ll just measure the cars through a far greater range of ride heights.”
Supercars is yet to confirm when the new VCAT process will take place, although it’s believed to take place in December following the final round of the 2019 season in Newcastle.
Following a close weekend of racing in New Zealand, Burgess suggested all models are at a comfortable stage to go into the new process.
“Downforce changes with the ride height. So it’s an improvement to the whole process,” Burgess added.
‘It was something that’s been looked at in the past, but it wasn’t done to the degree of accuracy or repeatability that you’d need, so we’ve been working this year on doing that.
“We have run a few times with our own car to make sure we’re happy with the process and happy with the accuracy of it.
“We’re at that point now to do a full VCAT at the end of the year, using active ride.”