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2006 National Association Rule Book

Appendix G

U n l i m i t e d O u t b o a r d s
Page Number: 81
Unlimited Outboards must comply with all rules, regulations, and safety requirements for Professional class boats unless a specific item is superseded as noted below:
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Capsules
Page Number: 81
Capsules in Unlimited Outboards shall be of an APBA type design, having a one half (1/2) inch minimum thickness capsule wall constructed of balsa, carbon fiber, and kevlar materials. A three sixteenths (3/16) inch minimum thickness poly-carbonate canopy shall be attached to a five eighths (5/8) inch O.D. (outside diameter) X .058 inch minimum wall thickness chromemoly tube frame. The canopy frame is to be attached to the capsule by means of hinges and two latch assemblies. All capsules, regardless of manufacturer or type, must be fully enclosed, and be designed using state-of-the-art technology in an effort to minimize serious injuries to the driver in the event of an accident. It shall be the responsibility of the boat owner to select the designer and/or manufacturer that best meets his standards for a high quality, crash worthy capsule.
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Air Supply
Page Number: 81
All rules pertaining to the driver’s air supply system must be followed unless physical limitations prevent the air tank from being located inside the capsule. The tank may then be mounted securely on the back of the capsule. In that case, the tank, regulator, and all air lines must be totally enclosed in such a manner that water cannot contact and pull them loose in the event of a crash
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Latch Pins
Page Number: 81
Latch pins (latch assembly pins) must be three eighths (3/8) inch minimum diameter push only type with a spring load of at least five (5) pounds. The ring should be attched to the body of the pin assembly rather than to the end of the release button. If necessary, a spacer must be used so as to position the release head of the pin no deeper than one (1) inch from the outside of the capsule.
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Side Load Pins
Page Number: 81
Side load pins, designed to prevent the capsule canoppy (or windshield) from shifting to either side in the event of a crash, must be installed in the immediate vicinity of each latch assembly (similar to SFI 36.1/.2/.3 capsules). The pins must be a minimum one half (1/2) inch chromemoly.
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Parachute
Page Number: 81
Parachutes are not required in the UO class
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Rudder
Page Number: 81
Rudders shall be a minimum of three eighths (3/8) inch thick at the clamshell, and the clamshell itself shall be a minimum of three eighths (3/8) inch thick on each side of the rudder. The rudder must extend a minimum of one (1) inch below the bottom tip of the propeller when said propeller is installed on the motor and positioned in a vertical manner
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Steering
Page Number: 81
Open cable steering must have said cable a minimum of three sixteenths (3/16) inch in diameter and the cable ends must be double clamped and taped. Motors on Unlimited Outboards utilizing hydroplane hulls must be locked in a straight ahead position and the steering accomplished by a separate rudder assembly.
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National Drag Boat Association (NDBA)

American Drag Boat Association (ADBA Div 1)

Central States Drag Boat Association (CSDBA Div 2)

Southern Drag Boat Association (SDBA Div 3)

St Louis Drag Boat Association (SLDBA Div 4)

Columbia Drag Boat Association (CDBA)

Delaware Drag Boat Association (DVDRC)

International Hot Boat Association (IHBA)

Kentuckey Drag Boat Association (KDBA)

National Jet Boat Association (NJBA)

Outboard Drag Boat Association (ODBA)

Victorian Drag Boat Club (VDBC)

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