Report KD 484 in which the VIRYA-3B3 rotor is described, is reviewed. A photo of the generator drawing with drawing number 1201-01 has been added in appendix 2. As the drawing is originally made on A1 format, a print of the photo on A4 format will be too small to read the measures but the measures can be read on the computer screen if the scale is enlarged. Manufacture of the wooden rotor blades of the VIRYA-3B3 is rather easy as the blades have a constant chord and no twist.