SDBayfair 09 Flatbottom Heats

Flatbottom Boat Racing
Racing Association APBA
www.apba-racing.com

SS - class (Super Stock)
The Super Stock Class began in 1970 as the stock version of the SK Class. They had to be a minimum of 16 ft long and 6 ft wide. The motor had to be out of an American V-8 passenger car that had a minimum production of 5,000 units. Other very strict engine rules were implemented for this class. Nineteen different U.S. auto engines from 327 cubic inches to 427 are acceptable for this class. Different motor specification rules apply to each of the different motors eligible. The drivers cockpit must be in front of the engine. This class was started in the 1960's.

PS - class (Pro Stock)
Pro Stock Class
This class has special rules set up with and enforced by a special Flatbottom A.C.T.I.O.N. Board. The hulls must be a minimum of 16 feet long, and a maximum of 20 feet long with a minimum beam of 72 inches. The motors can be a maximum of 500 cubic inches with any carbs or fuel injection. Fuels restricted to pump, aviation, and methanol blends with additives permitted, except nitromethane, and nitrous oxide. The A.C.T.I.O.N. board has many other special rules including the prize money percentage breakdowns. This class started in the 1950's as SK class.

P - class (Crackerbox)
Crackerbox Class
The cockpit had to be behind the engine, with two seats (passenger & driver). Hulls must a minimum of 13'6" and no longer than 15'6." The minimum weight is 1,250 lb. including the complete boat, wet and ready to race. The motors have a maximum of 275 cubic inches, made of cast iron and built by a U.S. auto manufacturer for use in passenger cars and trucks. Aluminum heads may be used, but fuel supply limited to carburetors only. Fuel injection is not permitted. Crackerboxes do have an alternate 314 cubic inch motor with special rules for that engine. Boats must be raced with two persons on board. The Crackerbox run mainly on the West coast of the U.S. This class was started in the late 1940's.

San Diego Bayfair the meca of boat racing with something for everyone. Personal Water Craft (PWC) to full blown multiengine V8s.
SanDiegoBayfair.org
Thanks to all the Bayfair volunteers that made this possible.
Video by Advanguard Productions
San Diego Bayfair the meca of boat racing with something for everyone. Personal Water Craft (PWC) to full blown multiengine V8s.
SanDiegoBayfair.org
Video by Advanguard Productions

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