Himax C 3510-1540 Brushless MotorC3510 1540 Outrunner HIMAX Motor 250 Watt type, for 3D models from 700 to 900 g, for aerobatic models up to approx. 1100 g or training model up to approx. 1400g. Also for gliders up to approx. 2500g. Revs min V: 1540 No. of cells: 6 9 2S 3S Operating range Optimal: 10 A 30 A Maximum current for 15 sec.: 42 A : 35mm Length: 32mm Weight.: 89g axis: 4 mm Fixing: 25 mm 4xM3