GT1 Gurney flap wicker clarification
#28886 from SCCA Staff · Rule change · TB 20-07 (2020-07 Fastrack)
In GT1 Specifications, section D, clarify wording as follows:
"The use of fences, end rails, Gurney lips flaps, wickerbills, or other forward facing lips or aerodynamic
devices is prohibited."
In GT1 Specifications, section E, clarify wording as follows:
"A maximum 0.50 inch Gurney tab flap is allowed at the trailing edge of the wing element."
"Endplates must be flat, with no curvature or Gurney tabs flaps. The maximum width of the entire wing
assembly (wing element, endplates, Gurney tab flap, and mounting hardware) is 72.00 inches. In
keeping in line with ˜Trans Am body work is legal in GT1”, An alternate rear wing of 12” average chord
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length and maximum 72” long is allowed, with a maximum 1/2” tall wicker Gurney flap, additionally
endplates having a maximum size of 100 square inches."