This is a S-600GD Motor System with Gear Drive, by Great Planes.

FEATURES: S-600R Reverse Rotation Motor.
          Two Different Pinions for Gear Ratios of 2.5:1 and 3:1.
          Easy Installation of the Gear Box
          APC Prop Included (9x8)
          Ideal for electric-powered R/C airplanes having weights up to 56
            ounces and wing loadings of approximately 20 oz/sq ft,
            and for 2-meter sailplanes

INCLUDES: One Gear Box with 2.5:1 Gear Ratio (GPMG0850)
          One S-600R Motor (GPMG0715)
          One 15 Tooth Pinion for Gear Ratio of 3.0:1 (GPMG0852)
          Three Capacitors
          One 9x8 APC Prop (APCQ0908)
          One Instruction Sheet

REQUIRES: Soldering of ESC Leads and Capacitors to Motor
SPECS:    Gear Ratios: 2.5:1 and 3:1
          Prop: 9x8

COMMENTS: Assembly screws and wrenches are included with the gearbox.
          Gearbox can be used in a pusher configuration, but requires
            a pusher prop or a standard rotation motor (GPMG0700)

                                                                    jmm 3/15/02
                                                                          ir/kh