The much awaited 2006 Rule Book is complete. As of today there are some conversion errors in getting it to post as an online format. I do not want this rule book to be delayed any further, so I am hoping that this update can get those who are waiting through the next couple of days.
The rule changes in the 2006 Rule Book are modifications or additions of the following sections of the 2005 Rule book (the rest remains the same):
The full text of these changes are listed below:
4.1.2.a For a Manufacturer to produce less than 500 identically manufactured units of a model and qualify for current-year IJSBA and- IJSBA affiliate sanctioned competition the manufacturer must adhere to the following criteria for all models produced in quantities below 500:
1) The manufacturer must produce a minimum of 100 identically manufactured units of a model. Should the manufacturer sell, or dispose of all 100 units before July 1st then the manufacturer must produce and additional 50 units, identical to the initial 100, and have those units available by September 2nd.
2) The manufacturer shall declare, in the initial application for homologation, that the model will have production numbers less than 500.
3) The manufacturer shall inform and update the IJSBA as to the status, location, and/or purchaser of each unit produced.
4) The manufacturer must allow the IJSBA, upon request, to broker the sale of up to 25% of the total model units produced in order to ensure distribution to IJSBA competition members.
5) The IJSBA may place restrictions on the model in stock class competitions.
6) In order to compete in Regional and National events in the United States, a total of 100 model units must be present and available in the United States, to customers, through the manufacturer’s normal means of distribution.
7) The manufacturer shall transport an IJSBA official to inspect the assembly line of the unit according to the terms listed in the homologation application.
8) Failure to comply with all requirements in this section shall result in the immediate suspension of the unit in sanctioned competition.
6.4.8 When Four-Stroke and Two-Stroke Ski PWC are combined in the same Stock Class then the IJSBA may require that those Four-Stroke Ski PWC which are not normally aspirated (Turbocharged or Supercharged) shall be affixed with a restrictor plate to the engine. The IJSBA will give 90 days notice of such a requirement and shall have the restrictor plate available within 45 days of such a requirement.
7.3.13 Cylinders may be interchanged between homologated watercraft of the same manufacturer subject to restrictions announced by the IJSBA. Any modifications to the cylinder or crankcase must be approved, in writing, by the IJSBA.
8.3.3 Crankshaft assembly may be modified or aftermarket. Stroke and rod length may be changed.
8.3.5 Cylinders may be interchanged between homologated watercraft of the same manufacturer subject to restrictions announced by the IJSBA. Any modifications to the cylinder or crankcase must be approved, in writing, by the IJSBA. Base gasket, head gasket and exhaust manifold gasket surfaces may be machined. Port heights, widths and shapes may be changed. Ports may be added or deleted from cylinder. Cylinders may be machined to accept aftermarket cylinder liners. Epoxy-type filler material may be added to hollow pockets in the base gasket areas and in the port area. Repairs to cracked or damaged cylinders may be made provided only one damaged area affecting one cylinder bank has been repaired. Cylinders may be machined to accept girdle-system cylinder heads. Water-cooling fittings may be added to cylinder. Exhaust power valve components and means of actuation may be modified or aftermarket.
9.3.1 Engines may be bored. Aftermarket piston assemblies are allowed. Engine displacement must not exceed class designation (e.g., 800cc in 800 Modified, 1200cc in 1200 Modified, etc.). The number, type, and placement of rings on piston may be changed.
Pro Freestyle ONLY:The maximum displacement for Ski Division in freestyle competition is 1200cc.
IJSBA Managing Director