The diameter of the Fenestron fan has a slightly larger diameter than the 1 : 5.7 scale of 175 mm.
Attached to the centre hub are eight ballraced Fenestron rotor blades. These blades are 68 mm long and have a blade chord of 21 mm.
Fenestron, kit-form, complete as shown. ring diameter: approx. 180 mm
For this you need the tail gear Ord.No. 92/76 or convert a possibly existing tail rotor with the conversion kit Ord.No. 92/89.
max. speed: 9500 rpm