Foxberg is yet another different event. The name is derived from Fox-Goldberg. This event mandates a Fox 35 and a Goldberg (or now Brodak) Buster, Shoestring, or Cosmic Wind. NCLRA Fox racing and Super Slow Rat (and AMA Slow Rat) allow any design with 300 sq. inches or more wing area, with a minimum wing thickness of one inch. AMA Slow Rat allows any 25 engine, fuel shutoffs, and quick fills. Super Slow Rat is stock plain bearing 25's, no quick fills, and no shutoffs used in the race (most places will allow a shutoff in the interest of safety). NCLRA Fox race is essentially the same as Super Slow Rat with a different engine. Around here (Texas) we fly Foxberg and Super Slow Rat, but not NCLRA Fox race or AMA Slow Rat. If this is your first racer, build the Super Fly. If you are looking for the hot setup, ours is a 30"x10" wing, 6" from prop to leading edge, 24" from prop to hinge line, 10%-15% CG, Brodak 25.