Ammo 36-30-4000Kv Brushless Inrunner Motor:This is the Great Planes ElectriFly Ammo / 36-30-4000kV 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 36-30-4000kV Brushless Electric Motor / with connectors and four M3x5 machine screws / / REQUIRES: Installing in model and connecting to speed control / Propeller, suggested sizes include 8x4E-10x5E / / SPECS: Motor Diameter: 1.42" (36mm) / Motor Length: 1.18" (30mm) / Shaft Diameter: .197" (5mm) / Shaft Length: .591" (15mm) / kV Rating: 4000 rpm/V / Weight: 4.8oz (138g) / Input Voltage: 14.8-18.5V / Max. Constant Current: 20A / Max. Surge Current: 37A / Max. Constant Watts: 370W / No Load Current: 3.7A / / jxs 2/23/06