Product SpecificationsType:Brushless Inrunner Size:540 Bearings or Bushings:Two 5 x 13 x 4mm Bearings Voltage:4.5V-12.6V RPM/Volt (Kv):2400Kv Resistance (Ri):26.5+/-2.5 Cells:4-9 cells NiMH/NiCd 1-3 cells LiPo/LiFe Weight:5.22 oz (148g) Overall Diameter:1.41 in (35.8mm) Shaft Diameter:0.20 in (5mm) Shaft Length:0.59 in (15mm) Overall Length:1.97 in (50mm) |