Z-Power Z30A Equivalent		Century 600 Series 600A Plus Kv (rpm/V) 1100 Max Power (W) 1665W Max Amp (15sec) 75A Max Efficiency 90% Io (No load A) 3.1A Rm (Resistance) 19.6Ohm Shaft Diameter 5mm Gearbox N/A Motor Diameter 43mm Motor Length 60.5mm Motor Weight 277g Built in Fan Yes Max Rpm 30,000 Poles 8 Case Outrunner ESC Timing 5-10deg ESC Switching Freq. 11-13KHz