The Battery's are racing pack types, high C ratings, two 7.2 volts in series. (Stops voltage drop when used on high drain models.) Motors used take less than 10 amps each. Gear box ratio 2.5/1, inline, fitted on motor, giving 8000rpm drive to props @ 14 Volts with plenty of torgue. The brass props used are Raboesh Type 146 - 16, one R/H the other L/H. The models speed given, is only an estimated one. See write up on P129 in Naval listings. (Motor: MFA/Como Drills 919D series) (ESC: Electronize FR15HX and FR15HVR) (10/10)