Increase engine displacement in lightweight superbike to 700cc or less for 2 cylinder engines (currently capped at 680cc). This would allow the FZ07 to race in this class, and bring our own classes into closer alignment with other clubs in North America.
FZ07 is comparable to SV650 and Ninja 650 bikes which are already eligible for this class. The FZ07 has a displacement of 689cc, which is only 9cc above the current class limit.
Without this change, the only race where the FZ07 is competitive is in the Middleweight Twins class. Where possible the EMRA does it’s best to give every bike two races where it can be competitive.
- American Federation of Motorcyclists uses the following range of engine sizes for superbike, with a note that 4 stroke twins are permitted to run one class down (limited to a 250cc advantage):
Also, their rulebook also specifically permits the Yamaha FZ07 to compete with the 650cc bikes in Formula GP, Formula IV and Formula Twins:
“250-650 cc …….. 4-stroke twin-cylinder, plus Yamaha FZ07”
“501-650 cc …….. 4-stroke twin-cylinder, plus Yamaha FZ07…”
Motorcyle Roadracing allows the following for lightweight twins superbike and superstock:
“Up to 700cc water-cooled twins with more than 3 valves”
– Utah Sportbike Association allows the following for lightweight twins superbike:
Up to 700cc two-cylinder, four-stroke, water cooled
– Washington Motorcycle Road Racing Association allows the following for lightweight superbike:
“Up to 700cc four-stroke twin-cylinder”
- Champion Cup Series / American SportBike Racing Association allows the following for lightweight superbike and supersport:
“Twin cylinder, liquid cooled, non-desmodromic valves, up to 800cc”
http://www.ccsracing.us/forms/2019/rules/2019 ASRA-CCS Rulebook.pdf
– Central Motorcycle Roadracing Association allows the following in the Superbike D (smallest superbike class)
“Up to 700cc 4-stroke water-cooled twins”
– Central Roadracing Association allows the following for lightweight superbike, supersport, and GP:
“Up to 700cc 4-stroke twins”