E.3    AIRCRAFT CONFIGURATION
E3.1    Only fixed wing designs will be permitted to enter the competition. The maximum total wingspan is to be 1500mm.
E3.2    Propulsion unit is to consist of one E-flight Power 10 motor and one E- flight 40A speed controller (available at cost direct from the BMFA office). The battery must be a 3 cell Lithium Polymer with a capacity not to exceed 2500 mAH, the pack must have the manufacturers label with the capacity shown. A separate battery may be used to power the aircraft’s radio receiver. No modification to the motor is permitted.
E3.3    Only one flight battery may be used per flying round.
E3.4    A propeller spinner or rounded safety nut must be fitted on forward facing motors.