These are the race classes
Experimental and Factory Built Classes
Experimental Classes
TURBINE
Any Experimental Category aircraft with a turbine engine, unlimited SHP (Shaft Horse Power). Class winners in both Fixed and Retractable gear.
UNLIMITED
Any Experimental Category aircraft with a turbo/super-charged (any forced-induction) engine with a displacement of 1400 cubic inches or less. Class winners in both Fixed and Retractable gear.
SPORT CLASS
Any Experimental Category aircraft with a normally aspirated engine with a displacement of 1000 cubic inches or less.
SPORT FX
Any Experimental Category aircraft with 550 cubic inch displacement normally aspirated with Fixed Landing Gear for RV-10s, F-1 Rocket, Harmon Rocket II etc.
Biplane Unlimited
Any aircraft having two main lifting wings, to include a tandem configuration, factory or experimental, with an engine displacement of 1400 cubic inches or less and can be turbo/super-charged (any forced-induction).
Biplane Sport
Any aircraft having two main lifting wings, to include a tandem configuration, factory or experimental, using a normally aspirated engine with a displacement of 1000 cubic inches or less.
Biplane Blue
Any aircraft having two main lifting wings, to include a tandem configuration, factory or experimental, with an engine displacement of 360 cubic inches or less, normally aspirated.
Biplane Red
Any aircraft having two main lifting wings, to include a tandem configuration, factory or experimental, with an engine displacement of 320 cubic inches or less, normally aspirated.
RG Blue
Any Experimental Category aircraft with an engine displacement of 360 cubic inches or less, normally aspirated, with retractable landing gear.
RG-T Blue
Any Experimental Category aircraft with an engine displacement of 360 cubic inches or less, turbo/super-charged (any forced-induction), with retractable landing gear.
RG Red
Any Experimental Category aircraft with an engine displacement of 320 cubic inches or less, normally aspirated, with retractable landing gear.
RG-T Red
Any Experimental Category aircraft with an engine displacement of 320 cubic inches or less, turbo/super-charged (any forced-induction), with retractable landing gear.
FX Blue
Any Experimental Category aircraft with an engine displacement of 360 cubic inches or less, normally aspirated, with at least two fixed landing gear.
FX-T Blue
Any Experimental Category aircraft with an engine displacement of 360 cubic inches or less, turbo/super-charged (any forced-induction), with at least two fixed landing gear.
FX Red
Any Experimental Category aircraft with an engine displacement of 320 cubic inches or less, normally aspirated, with at least two fixed landing gear.
FX-T Red
Any Experimental Category aircraft with an engine displacement of 320 cubic inches or less, turbo/super-charged (any forced-induction), with at least two fixed landing gear.
RV Blue
Open to Van's aircraft RV-3, RV-4, RV-6, RV-6A, RV-7, RV-7A, RV-8, RV-8A, RV-9, and RV-9A airplanes powered with an engine of 360 cubic inches or less, normally aspirated.
RV-T Blue
Open to Van's aircraft RV-3, RV-4, RV-6, RV-6A, RV-7, RV-7A, RV-8, RV-8A, RV-9, and RV-9A airplanes powered with an engine of 360 cubic inches or less, turbo/super-charged (any forced-induction).
RV Red
Open to Van's aircraft RV-3, RV-4, RV-6, RV-6A, RV-7, RV-7A, RV-8, RV-8A, RV-9, and RV-9A airplanes powered with an engine of 320 cubic inches or less, normally aspirated.
RV-T Red
Open to Van's aircraft RV-3, RV-4, RV-6, RV-6A, RV-7, RV-7A, RV-8, RV-8A, RV-9, and RV-9A airplanes powered with an engine of 320 cubic inches or less, turbo/super-charged (any forced-induction).
SPRINT CLASS
Any Experimental Category aircraft with an engine displacement of 240 cubic inches or less, normally aspirated.
SPRINT-T CLASS
Any Experimental Category aircraft with an engine displacement of 240 cubic inches or less, turbo/super-charged (any forced-induction).
SPORSTMAN
Any Experimental Category aircraft using a VW or Corvair normally aspirated engine conversion
SPORSTMAN-T
Any Experimental Category aircraft using a VW or Corvair turbo/super-charged (any forced-induction) engine conversion
Factory Built Classes
FAC1RG
Any Factory-built aircraft with 280 HP and above, normally aspirated with retractable landing gear
FAC1RG-T
Any Factory-built aircraft with 280 HP and above, turbo/super-charged (any forced-induction), with retractable landing gear
FAC1FX
Any Factory-built aircraft with 280 HP and above, normally aspirated with fixed landing gear
FAC1FX-T
Any Factory-built aircraft with 280 HP and above, turbo/super-charged (any forced-induction), with fixed landing gear
FAC2RG
Any Factory-built aircraft with 240 - 279 HP, normally aspirated with retractable landing gear
FAC2RG-T
Any Factory-built aircraft with 240 - 279 HP, turbo/super-charged (any forced-induction), with retractable landing gear
FAC2FX
Any Factory-built aircraft with 240 - 279 HP, normally aspirated with fixed landing gear
FAC2FX-T
Any Factory-built aircraft with 240 - 279 HP, turbo/super-charged (any forced-induction), with fixed landing gear
FAC3RG
Any Factory-built aircraft with 200 - 239 HP, normally aspirated with retractable landing gear
FAC3RG-T
Any Factory-built aircraft with 200 - 239 HP, turbo/super-charged (any forced-induction), with retractable landing gear
FAC3FX
Any Factory-built aircraft with 200 - 239 HP, normally aspirated with fixed landing gear
FAC3FX-T
Any Factory-built aircraft with 200 - 239 HP, turbo/super-charged (any forced-induction), with fixed landing gear
FAC4RG
Any Factory-built aircraft with 180 - 199 HP, normally aspirated with retractable landing gear
FAC4RG-T
Any Factory-built aircraft with 180 - 199 HP, turbo/super-charged (any forced-induction), with retractable landing gear
FAC4FX
Any Factory-built aircraft with 180 - 199 HP, normally aspirated with fixed landing gear
FAC4FX-T
Any Factory-built aircraft with 180 - 199 HP, turbo/super-charged (any forced-induction), with fixed landing gear
FAC5
Any Factory-built aircraft with less than 180 HP
TWIN1
Any Factory-built twin-engined aircraft with 280 HP and above per engine, normally aspirated
TWIN1-T
Any Factory-built twin-engined aircraft with 280 HP and above per engine, turbo/super-charged (any forced-induction).
TWIN2
Any Factory-built twin-engined aircraft with 200 to 279 HP per engine, normally aspirated
TWIN2-T
Any Factory-built twin-engined aircraft with 200 to 279 HP per engine, turbo/super-charged (any forced-induction).
TWIN3
Any Factory-built twin-engined aircraft with 100 to 199 HP per engine, normally aspirated
TWIN3-T
Any Factory-built twin-engined aircraft with 100 to 199 HP per engine, turbo/super-charged (any forced-induction).
Bob Axsom