vedi se è conveniente
http://cgi.ebay.it/400S-Coil-For-L-Type-Br...6QQcmdZViewItem
oppure se questi dati ti possono servire
Stock Wire Dimension: 0.32mm
Winding Method Wires Propeller Battery RPM
"Wye" Connection 4 wires 9 turns APC 7*5E? 11.1V, 12A~11A 9200
"Wye" Connection 3 wires 12 turns GW 1047SF 11.1V, 9-10A 5600
"Wye" Connection 3 wires 12 turns GW 1047SF 7.4V, 6-7A 4800
"Delta" Connection 4 wires 8 turns GW 5025DD 11.1V, 12A 18700
"Delta" Connection 4 wires 8 turns GW 5025DD 11.1V, 16A 20000
"Delta" Connection 4 wires 8 turns Wattage EDF 11.1V, 13A 25000