Originally Posted by
WESTERNAERO
I think this is what Bob is referring to. This is a part of the K-class rules.
51.4 Minimum hull length shall be 17 ft. L.O.A. and the Maximum hull length shall be 20 feet L.O.A. not including cavitation plates.
-OR-
51.4.1 When using the optional 21 foot rule, the following rule must be met:
51.4.1.1 Maximum length 21 feet excluding the cavitation plate. Minimum length 19 feet excluding the cavitation plate
51.4.1.2 Strake depth must not exceed one and one quarter inch from trailing edge to mid ship.
51.4.1.3 Bottom concavity must not exceed one and one quarter inch from trailing edge to mid ship.
51.4.1.4 Nothing must interfere with a straight edge from keel to chine in the area from trailing edge to 65 inches
forward.
51.4.1.5 Dead rise at the transom must not exceed 4 degrees.
51.4.1.6 All boats meeting this optional 21 foot rule must weigh a minimum of 2,400 pounds.
51.5 Hull must be a flatbottom boat design and conform to the GENERAL RULES FOR INBOARD RUNABOUTS, racing classification. <<<<<< What about this part right here?
51.6 Stabilizers, wing sections or airfoils may be installed, provided they are used in a horizontal position no wider than the beam of the
boat under the areas of stabilizer installation. They may not be adjusted while the boat is in motion nor will they be installed to the rear
(aft) of the transom. They shall not be positioned forward of amidships. The leading edges shall be no closer than 24 in. from the top of
the inside back of the driver’s seat. The leading edge center line shall not be mounted more than 10 in. above the blower(s), injector(s) or
top surfaces of other engine top mountings. They must pass a safety inspection before each race.