Where did the time go? Kawasaki released the 1500cc based SX-R in 2017. Now, in 2022, IJSBA is receiving a considerable amount of questions on whether there will be an additional sponson allowance for this unit. This bulletin begins formal public discussion on this topic.
Previously, IJSBA allowed a second set of sponsons to be added to a homologated Ski type watercraft when the particular hull reached the age of five years. The intention was that older Ski could be kept competitive with newer Ski that enjoyed a more modern hull. This provision was added to Ski classes, some of which are no longer offered in the mainstream (Limited) and no new units have been homologated where this provision remained (Lites).
The following language can be found in the Ski Lites section of IJSBA Rules : "Models homologated in quantities of 500 shall be allowed an additional set of sponsons for a total of four sponsons. The total sponson length shall be limited to 1,524 mm (60 in) in a single or two sponson configuration. The decision of the Technical Director and/or Race Director regarding modifications will be final. Any question regarding the legality of modifications should be directed to the IJSBA or IJSBA affiliate prior to use in competition."
The provision above does not appear in the Ski Stock nor Ski Superstock. These competition categories were created exclusively for the Kawasaki SX-R watercraft and since the creation of these classes there have been no new homologations for watercraft in these categories. However, IJSBA notes that the 1500cc based SX-R is required to maintain an OEM hull when utilizing OEM dimensions in Ski GP categories. For this reason, it may be appropriate to allow a second set of sponsons based on the five year age of the SX-R competing against more modern hulls. If this provision is extended to the SX-R, IJSBA believes it would best serve the community if the allowance was extended to the unit in all categories to provide for the uniformed use of the product throughout competition.
Please send all questions or comments regarding this discussion to email@example.com. IJSBA will provide an update on this matter on February 15 announcing some sort of notice of direction.