This is the Great Planes ElectriFly Ammo / 24-33-3180kV Brushless In-Runner Electric Motor. / / FEATURES: Brushless, slotless Ammo In-Runner Motors offer an incredible power- / to-weight advantage and almost twice the efficiency of Brushed / motors / Ideal for direct or gear drive use / Up to 89% efficient and virtually maintenance-free; no brushes to / wear out / Powered by "rare earth" Neodymium magnets for high torque and / unmatched heat resistance / Pre-installed gold plated connectors for plug and play operation / when used with compatible ElectriFly Silver Series Brushless speed / controls / Double sealed bearings / Two year warranty / / INCLUDES: Great Planes ElectriFly Ammo 24-33-3180kV Brushless Electric Motor / with connectors and four M2x5 machine screws / / REQUIRES: Installing in model and connecting to speed control / Propeller, suggested sizes are 8x6E-12x10E / / SPECS: Motor Diameter: .945" (24mm) / Motor Length: 1.3" (33mm) / Shaft Diameter: .118" (3mm) / Shaft Length: .472" (12mm) / kV Rating: 3180rpm/V / Weight: 2.4oz (67g) / Input Voltage: 7.4-11.1V / Max. Constant Current: 17.2A / Max. Surge Current: 20A / Max. Constant Watts: 190W / No Load Current: 1A / / jxs 2/23/06