This is the GWS EDF64 Electric Ducted Fan Power System.

FEATURES: High efficiency, high output, Ultra-light, High speed
          Pre-assembled unit with duct, fan, motor and connector
          Operates on 7.2, 8.4, 9.6 or 10.8V
          EP2540x6 size dynamic fan
          EM300H motor

INCLUDES: Gray plastic duct, black fan, motor capacitor and two-pin GWS
            connector and a 1.5mm allen wrench

REQUIRES: Installing in GWS Ducted Fan airplane kit

SPECS:    Fan Diameter: 2.5" (63.5mm)
          Diameter of Outer Lip of Duct Opening: 3.03" (77mm)
          Diameter of Duct: 2.63" (67mm)
          Distance From Rear of Motor to Propeller: 2.6" (66mm)
          Duct Depth: 1.63" (41.5mm)
                     7.2V                8.4V                9.6V
         amps:       4.6A                5.7A                6.6A
         Thrust:     4.69oz (133g)       5.89oz (167g)       6.70oz (190g)
         Power (W):  33.12               47.88               63.36
         Efficiency: 0.14oz/w (4.02g/w)  0.12oz/w (3.49g/w)  0.11oz/w (3.00g/w)

                      10.8V
         Amps:        7.7
         Thrust:      7.69oz (218g)
         Power (W):   83.16
         Efficiency:  0.09oz/w (2.62g)

                                                                   tlw 10/16/07
                                                                         ir/jxs