AXI 1215/12 4750kv 20A Motor Specifications No. of cells: 6 – 8 (10) RPM/V: 4750 Max. efficiency: 78% Max. efficiency current: 8 – 15A (>73%) Current capacity: 20A / 20s Dimensions (Diameter x Length): 24 x 37.5mm Shaft diameter: 2.3mm Weight with cables : 53g Recomended Gearbox: VMGM Recomended VMGM Gearbox Ratio / Prop / No. Cells: D.fans / 55 – 56mm / 6 – 10, 4.64:1 / 9.5×6 / 7, 6.00:1 / 10×6 / 8, Car size 1:18 / NA / 7 – 8