The VAS400 Ducted Fan for 400/480 Motors is for an airplane that weighs 20 oz.. Duct is made totally of carbon fiber and is very rigid so that clearance between fan blade and the inside of the duct remains constant. Length is 75mm (2.95"), Outside diameter is 66mm (2.60"), Inside diameter is 65mm (2.56"). Weight without motor is 35 grams.
Cells: Motor #: Motor Type: Volts: Amps: Thrust:
10 x 500 mAh GR3321 SPEED 400, 6V 11.6 10.5 280g/10 cells
10 x 500 mAh GR6330 SPEED 480, 7.2V 11.8 9.5 280g/10 cells
NOTE: (Exact item may differ for Picture)