Airframe Wingspan 38" Weight 6.5 oz Wing Area 237 sq ins Wing Loading 4 oz/sq ft Power system Motor GWS B Indoor Power System Battery initially 7 x 250mah now 8 x 50mah Propeller Graupner GWS 9" x 4.7" Performance Turns best on 8 cells and with increased dihedral (either tie a thread between the wingtips or, as I did, take the heat gun to the wing mounting brackets!)