Item Number: EFLM1300Features Slotted 12-pole outrunner design Prop adapter (EFLM1923) and gold-plated connectors included Excellent motor for small 3D and scale park flyers weighing 10–20 oz (280–560 g) Motor mount included Replacement for Speed 370 and Speed 400 applications Quiet operation\low noise compared to gearbox systemsOverviewThe great performance and small size of this engine makes it perfect for small 3D and other park flyer models. The external rotor design eliminates the need for a gearbox, saving you valuable weight to get the maximum performance out of the model.Tech NotesYou will need...10–20A brushless ESC10x7 to 12x3.8 prop7.4V or 11.1V 860–1320mAh Li-PoNew Window E-flite Motor Comparisons (160 KB)SpecificationsType: BrushlessSize: Replacement for 370/400Bearings or Bushings: One 3.175 x 7.94 x 3.6 Bearing, and One 3.175 x 9.525 x 3.97 BearingRecommended Prop Range: 10x4.7-12x3.8Voltage: 7.2–12RPM/Volt (Kv): 740 (rpms per volt)Resistance (Ri): .26 ohmsIdle Current (Io): .55 @ 10V (no load current)Shaft Diameter: 1/8 in (3.17mm)Overall Length: 1.15 in (29mm)Weight: 56 g (2.0 oz)Overall Diameter: 1.10 in (28mm)Diameter: 1.1 in (28mm)Continuous Current: 7AMaximum Burst Current: 10ACells: 6–10 Ni-Cd/Ni-MH or 2–3 Li-PoSpeed Control: 10–20 amp brushless