HobbyWing 30402652 Ezrun 3660 G2 4600kv brushless motor

The first motor adopted the innovative 4-pole-8-magnet "staggered pole" rotor
(Hobbywing-patented design) (in the RC field) has the extremely low cogging
effect and low torque pulsation (it's reduced by 85% when comparing
with conventional 1/10^th scale 4-pole motors)