KMS Quantum 4120/06 Brushless Motor (M-KMSQ4120/06) Quality, performance & value-for-money are all combined to provide electric motors that cover the smallest indoor models right up to sizes that are usually the domain of 50cc petrol engines. There are specialist helicopter motors, those suited to gearboxes & EDF & motors that offer a direct replacement power output for all the popular glow engine sizes. The Quantum 4120/05 for instance would be an ideal choice for a standard trainer like the Irvine Tutor 40. The price &
Specification are right, so the choice is yours! Specification: Length: 55.5mm Diameter: 50mm Shaft Dia.: 6mm Weight: 304g Max. Continuous Current: 40A Max. Burst Current: 60A / 60s Resistance: 43m Ohm Prop range: 12 x 8, 13 x 7, 13 x 8, 14 x 7, 14 x 8 ESC Timing: 20-30 degrees (high) Poles: 14 Bearings: 3 Turns: 6 I0: 2A (10v) Li-Po: 4S, 5S Ni Cad / Ni MH: 12-16 cells Max. Efficency: >86%