Steve91T Posted January 19, 2016 Author Share Posted January 19, 2016 +.4 would be 9.1, right? Otherwise aftermarket aero would allow me to have more power. That doesn't make sense. Quote Link to comment Share on other sites More sharing options...
docwyte Posted January 20, 2016 Share Posted January 20, 2016 Over what range do you have to calculate the average HP? The last 2000 rpm or ??? Quote Link to comment Share on other sites More sharing options...
Steve91T Posted January 20, 2016 Author Share Posted January 20, 2016 Over what range do you have to calculate the average HP? The last 2000 rpm or ??? I see where it says "average", but I don't see details. Maybe it's in the dyno form or something. Quote Link to comment Share on other sites More sharing options...
427R Posted January 20, 2016 Share Posted January 20, 2016 Go to Forms, Time Trials, TT Classification, NASA TT, TT1,2,3 Class Calculator to determine your Ratio. Go the Time Trials Rules for 2016, Chapter 9, paragraph 9.2. Spells out the Avg. HP Rule and how's its calculated. Quote Link to comment Share on other sites More sharing options...
427R Posted January 20, 2016 Share Posted January 20, 2016 +.4 would be 9.1, right? Otherwise aftermarket aero would allow me to have more power. That doesn't make sense. ?? Example. competition wt = 3400. Avg HP = 357. This gives you Adjusted Wt/HP Ratio of 9.724 (w/wt. factor of .2). Now if you add OEM Aero, you get .40 added, this now gives you an Adj. Wt/HP Ratio of 10.124. If you run tires, size 250-275, you get .30 added and new Adj. Wt/HP Ratio is 10.424. Minimum Ratio for TT3 is 10.00. If you're over, you're good. I'm over by .921, so I have weight to lose or HP to gain. Quote Link to comment Share on other sites More sharing options...
Steve91T Posted January 20, 2016 Author Share Posted January 20, 2016 +.4 would be 9.1, right? Otherwise aftermarket aero would allow me to have more power. That doesn't make sense. ?? Example. competition wt = 3400. Avg HP = 357. This gives you Adjusted Wt/HP Ratio of 9.724 (w/wt. factor of .2). Now if you add OEM Aero, you get .40 added, this now gives you an Adj. Wt/HP Ratio of 10.124. If you run tires, size 250-275, you get .30 added and new Adj. Wt/HP Ratio is 10.424. Minimum Ratio for TT3 is 10.00. If you're over, you're good. I'm over by .921, so I have weight to lose or HP to gain. I don't know why I can't wrap my head around this. I'd like to think I'm a pretty smart guy but sometimes I wonder. OK what's OEM aero? The 4th gen Camaro has a rear wing, obviously cosmetic only. Is that OEM aero? In other words, if the exterior is stock, that OEM aero. Oh maybe I'm thinking of this backwards. You're saying my power to weight is adjusted to 10.424? And that's with 357 average hp? So I need to actually to either add power or loose weight to get closer to 10.0? Right? Quote Link to comment Share on other sites More sharing options...
427R Posted January 20, 2016 Share Posted January 20, 2016 See TT Rules for 2016, Section 7.3.2 D) for definition of Aero. Quote Link to comment Share on other sites More sharing options...
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