Quote:
Originally Posted by DaveC113
I run in CAMC, and imo SCCA totally f'ed folks who built according to last years' rules and the .819 PAX index, considering CAM cars have to be street legal as well. Most people who drive their cars on the street don't want huge wings and splitters on their cars.
Not a lot of people who have Camaro race cars with full aero participate in autox, but TONS of people who have Mustang and Camaro street cars with a few handling mods and alignment mods or even power mods that throw them out of FS run CAM.
Also, PAX is supposed to be determined by actual results and not a theoretical build nobody has actually run.
So thanks for the info on wings, but SCCA sucks for doing this. Last year's .819 PAX was a little soft, but the .827 PAX is ridiculous for a full-weight car with minimal mods. Now I have to raw-time C6Zs and Cayman GTS's in AS in my 3700-lb Camaro? My previously competitive car is no longer even close. SCCA has their heads way far up their asses on this one.
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100% agree with you here. I'll gladly go back to a spoiler and an .819 pax. Changing the rules to allow wings will not do anything to attendance.
Quote:
Originally Posted by Msquared
In general, the experts are right: there's an angle of attack beyond which a wing stalls and makes a lot more drag and loses lift. Every wing and installation is different in what that angle is, of course. It's easy enough to determine if a wing is stalling: just install a bunch of yarn tufts on the underside and see if they are "luffing" or not.
I have yet to see anyone even come close to an optimal wing in CAM so far. However, that doesn't really matter because with the current rule set one can easily make more rear downforce than can be balanced out with the allowed front splitter and dive planes. In fact, I would consider moving the rear wing as far forward as the rules allow to try to distribute as much downforce forward as possible. It would look goofy as hell, but that's a function of the current rule set. I agree that CAM should not allow wings, but that ship has already sailed.
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Somewhat agree with you. Yes the angles beyond 10 AoA will make the wing stall, but it's still bolted directly to the car, and it still making downforce. It's just making significantly more drag while doing so. There's a sweet spot in there somewhere. I tested at 3 degrees, 16 degrees, and 32 degrees. 16 was the best for my car at 0-40mph.
https://www.youtube.com/shorts/EL_arifKuS4
This was with a single element that is way undersized for CAM. It's roughly 4.xx sq/ft.
I have a new testing setup that won't deflect any of the downforce and "should" give me more accurate readings. Hopefully I'll get some data this weekend.