|
B. SST 75 TECHNICAL STANDARDS
Max. Total Cu. In. Displacement Min. Boat Length Min. Boat Weight
Super stock outboard performance craft classes are established as follows sst 75
Classs Motor Mfg. and model max cu. In displacement Min Boat length Min Boat weight
Sst 75 OMC sport E 49.99 13’ 750
Mercury 650xs 49.99 13’ 750
Omc SST-45 44.9 12’ 625
OMC SST 60 56.1 14’ 800
Mercury SST 90 71.5 14’ 875
SST 75 Boat Standards (see also Rule 21)
1) Any boat design including bottom, deck, cockpit openings and seating arrangements is permissible so long as boat meets minimum length.
2) Power trim and/or adjustable spoilers shall be allowed in SST classes.
3) SST classes can change engine wiring to allow 24-volt starting system.
SST 75 Motor Standards (see also Rule 23, 25, 26)
1) All cowling and engine graphics and colors shall be essentially the same as OEM, with updating to later models allowed only as a complete OEM design.
2) The SST 75 class gear cases may have their outside surfaces re-finished; however, they must meet the requirements of OPC Engine Specification sheets and the original design. The outside surfaces of the gearcases may be either painted or unpainted. If they are painted, the color of the paint must be the same as the original factory motor color. If the gearcases are unpainted, any surface finished is acceptable.
3) SST 75 class may use alternate plastic reeds - OMC part number 568428.
4) SST 75 engines may have substitution of a maximum of 3 sleeves of any manufacture with original porting specifications and the same material for repair of damaged cylinders.
5) Glue line may be removed on “Boost Port” only. (The Motor Technical Committee will establish the specifications to be printed on the inspection sheet.)
RULE 21 • BOAT STANDARDS
1. The length is to be measured parallel with the fore and aft centerline from the rear of the transom at the point of engine attachment, to the foremost part of the bow. A tolerance of two inches will be allowed in measuring overall boat length dimensions.
2. No add-on extensions to the hull will be permitted to achieve class length. Fins are not included in measurement of boat length (see Figure J).
3. The minimum weights assigned to a specific class shall include motors, steering systems, motor controls, hardware, instruments, and all securely attached cushions, fuel tanks and brackets, batteries and boxes, fire extinguishers, etc. Any fuel remaining in the tanks at the end of the race will be included in the boat weight. Driver’s weight will be included with life jacket and helmet and clothing as raced. No water will constitute any part of the total class weight. All weights other than the driver, engine and its controls, and fire extinguishers, must be fastened in such a manner that their centers of gravity cannot be moved during the race. Except in races of longer than one-half hour duration per heat, only one fuel tank will be allowed. No weights, other than the engine and its controls, may be fastened in locations external to the hull where they may constitute a hazard upon impact with another object.
4. In questionable cases, acceptability of a given hull shall be the responsibility of the Referee and his decision shall be final.
5. All boats constructed with false floors, seat box compartment or air filled flotation tanks must be fitted with inspection holes of at least 7/8” diameter such that no point inside said tank is more than 24 inches from inspection hole. These holes may be plugged during competition but must be open for weighing and inspection.
6. There shall be no devices or arrangements specifically to take advantage of external air pressure to produce or assist planing.
RULE 22 • BOAT NUMBERS
1. Owners are to fasten their assigned numbers to each side of the boat in such a manner that the number is readily visible to the officials. Numbers must remain intact throughout the race. Failure of the number to be visible may disqualify the boat. Black numerals on a white background that is approximately elliptical or rectangular in shape, or the reverse of the preceding, is acceptable. Vertical block characters shall be used and be a minimum of twelve inches (12") high and a minimum stroke of two inches (2”). Less than 12" minimum is acceptable only if the surface area will not allow otherwise, and the numbers must be as close as possible to the stated minimum standards. Should the background be the same color as the adjacent section of the boat, a 1/2" contrasting, approximately elliptical or rectangular, border is required. Spacing between numbers, and between borders and numbers, must be at least two inches (2"). Numbers, as well as the background and borders may not be angled or tilted. The National Office assigned number must take precedence in case of a number conflict. The legality of any boat numbering is the responsibility of the Race Committee only and cannot be protested. 24
RULE 23 • OUTBOARD MOTOR STANDARDS
1. An outboard motor is defined as a complete internal combustion power and propulsion unit that can be attached to a boat and which can be lifted bodily from the hull as one unit. Batteries used for ignition and starting, tachometer, throttle control and steering arrangement are excepted.
2. A manufacturer of outboard motors for Outboard Performance Craft Racing is one who filed specifications and is responsible for the original design and manufacture of the following: crankshaft, connecting rod, cylinder head, cylinder, crankcase, gears and valving arrangement, and who complied with such other requirements as provided by these rules. Manufacturers may be of either foreign or USA (domestic) origin, and motors must be or have been available in the USA through dealer networks.
A. Motors must be the product of a recognized manufacturer engaged in the production of outboard motors offered for sale to the general public.
B. There shall be no alterations of parts with the exception of spark plugs, carburetor jets, and propellers, or specific parts approved by the Technical Committee and approved by the Commission. The intention is to race the engine exactly as manufactured and without special performance boosting accessories. The gearcases on motors raced in Stock classes must be raced with either the same surface coating or paint as supplied by the manufacturer, or with no surface coating or paint over part or all of the surface of the gearcase casting, but the smoothness of the metal surface must under no circumstances be better than that supplied by the manufacturer.
C. No special parts or interchange of parts will be allowed, unless approved by the Commission.
D. In all classes the trim tab, thrust and locking washers may be altered or removed from the lower unit to permit the use of any propeller, thrust washer or nut.
E. Cylinder head and power head attaching studs may be substituted for bolts.
F. Electronic engine RPM limiting devices may be eliminated.
3. Stock Engines (Outboard) as referred to in these rules shall be defined as outboard models that:
A. All engines in Stock classes must be capable of shifting from the driver’s seat, with one hand on the steering wheel, by electric or mechanical methods; and be capable of forward and reverse shifting at all times.
B. Are manufactured in annual or model year quantities of greater than 250 units.
C. Are intended for sale to and to be used by the general public.
D. Are advertised through the same media, in the same publications and given the same prominence as the manufacturer’s other engines.
E. Are distributed through the manufacturer’s normal channels.
F. Are not equipped with an accessory or high-speed gearcase.
G. Are equipped with standard under-cavitation plate or through-prop exhaust.
4. Super Stock Engines (Outboard) as referred to in these rules shall be defined as outboard models that:
A. Are manufactured in annual or model year quantities of more than 25 units.
B. Are not necessarily intended for sale and to be used by the general non-racing public.
C. Are not necessarily advertised through the same media, in the same publications and given the same prominence as the manufacturer’s other engines.
D. Are not necessarily distributed through the manufacturer’s normal channels.
E. Accessory gearcases, as submitted by the manufacturer, may be used in these engines provided that they are built in a total quantity of no less than 25.
F. Exhaust stacks not contained in the driveshaft housing will not be permitted.
G. Standard factory production models may run in Super Stock classes.
H. Only one manufacturer’s engine should be approved per class. (sst75 exempt)
I. No Stock or Super Stock motor shall be eligible for Outboard Performance Craft (OPC) racing until such time as the model has been approved by the OPC Racing Commission.
5. Engines run in Stock and Super Stock classes may only be run in the configuration that they were homologated in by the Technical Committee.
|
