This "clarification" will require another clarification IMO. What defines a forward facing gap?
In the Glossary of technical terms it is not listed. However in the many places in the GCR where the term "forward facing" is used, on page 252 of the 2011 GCR (FF cars registered before 1/1/86) there is this section:
[FONT=Univers][FONT=Univers]Wings and other airfoil devices which have the principal effect [/FONT]
[FONT=Univers]of creating aerodynamic down-thrust are prohibited. Airfoil: [/FONT][FONT=Univers]Any device or part of a car (excepting normal and conventionally [/FONT][FONT=Univers]styled bodywork) which has a principal effect of [/FONT][FONT=Univers]creating aerodynamic downthrust. Within this definition may [/FONT][FONT=Univers]be included forward facing gaps or openings in the bodywork, [/FONT]
[FONT=Univers]This is not a definition but it does relate "forward facing gaps" to aerodynamic Df.[/FONT] [FONT=Univers]Some cars have barge boards or devices to direct air around the rear tires. These do have "gaps" between body part A and body part B but?? [/FONT][FONT=Univers]I contend barge boards are used to direct air to the radiator inlet ducts. I also contend [/FONT][FONT=Univers]that my deflectors in front of the rear tires are to direct air to the rear brakes, or they will be by next season. The stewards will be having fun with FB this year.[/FONT]
Thanks ... Jay Novak
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