Following the lead of the FIM Supersport 300 World Championship, which adjusted balancing regulations following the first round of the 2018 Championship, MotoAmerica has issued a Technical Bulletin alerting its Junior Cup teams and competitors that it intends to adjust their balancing regulations. The new regulations will go into effect at the VIRginia International Raceway event scheduled for May 4-6.
From Technical Bulletin 08-2018:
All MotoAmerica Junior Cup Teams
Balancing regulation updates.
From and including Round 3 VIR the following will apply:
The FIM/DWO Rev-limiter / quickshifter will require a software update. The updates will be sent to teams as soon as they are available. Updates will also be available and take place during technical control at VIR. Final RPM limits are currently being calculated by the FIM using the latest results from WSS300 and Round 1 of the Junior Cup. It is highly recommended that Ninja 400 and KTM RC390R competitors prepare for a potential of up to 2000 RPM limit decrease by obtaining additional final drive gearing .
2.7.4 Minimum weight
The minimum weight for each model is as follows:
Honda CBR500R 153Kg
Kawasaki Ninja 300 (EX300ADF) 140Kg
Kawasaki Ninja 400 150Kg
Yamaha YZF-R3 140Kg
Yamaha YZF-R3A 140Kg
KTM RC390 136Kg
KTM RC390R 136Kg
2.7.9.1 Ignition / Engine Control System (ECU)
n. The initial revlimiter setting for each machine is as follows:
Machine: Max rpm
Honda CBR500R Increase TBD
Kawasaki Ninja 300 (EX300ADF) 13,000rpm
Kawasaki Ninja 400 Decrease TBD
Yamaha YZF-R3 Increase TBD
Yamaha YZF-R3A Increase TBD
KTM RC390 Decrease TBD
KTM RC390R Decrease TBD
The following modification’s will be allowed:
Yamaha R3 and Yamaha R3A:
Airbox air filter cover may be reduced
Air funnel may be shortened (with no limit)
Airbox intake tube may be removed (rubber)
Honda CBR500R:
Air funnel may be shortened (with no limit)
Airbox intake tube/funnel may be removed (this part is the filter mount)
To read the entire MotoAmerica 08-2018 Technical Bulletin, go to: http://www.motoamericaregistration.com/PDF/2018/Bu…
MotoAmerica also issued Technical Bulletins for the Superbike class regarding front fenders (http://www.motoamericaregistration.com/PDF/2018/Bu…) and wings, aerodynamic aids and crash guards (http://www.motoamericaregistration.com/PDF/2018/Bu…).