The 2-bladed VIRYA-1.36 windmill and its 8-pole axial flux generator are described in reportKD 571 (ref. 1). The drawings are given in the manual of the VIRYA-1.36 (ref. 2). The generator of the VIRYA-1.36 uses eight neodymium magnets size 25.4 * 25.4 * 12.7 mm. It might be possible to design a bigger windmill and a bigger generator using most of the principles as used for the VIRYA-1.36. However, in stead of square magnets,  circular magnets will be used. Advantages of circular magnets are that the variation of the magnetic field in the stator will be more sinusoidal than for square magnets and that mounting of circular magnets to the  armature sheet is simpler.