Some results of my research on this so-called 500 Watts 24Volt wind turbine:
The span width is 44 inch, 110 cm.
It is realistically not possible to generate more power than 80 Wattts at any given time, given the 44 inch span width. Unless you have turbo winds and position the wind mill at a height of more than 30 meters at a sea shore.
The wiring of the windmill is not made to withstand any amperage above 1.5 Amps.
The wire diameter of this 24V version is 0,8 mm, including coating. That is 20 gauge. This is rated at max 1.5 Amps. Times 24Volts x 3 phases AC is theoretically max 130 Watts. If the blades can catch maximum amount of wind, which is in practice limited to max 80 Watts due to world-given natural limitations. To get more power from wind, the blades must exceed a length of 5 meters (15 feet) with a span width of 10 meters (30 feet) and you need a setup height of at least 30 meters (100 feet).
80 Watts is fine BTW if you use this wind mill in a small off-grid setup and position the wind mill at a height of at least 5 meters (15feet) above the tallest building around. Which is exactly the local limit to get a permit where I live (in the Netherlands, EU).
The mechanical construction is OK, although I doubt that the slip rings will survive in the long term.
And- the main bearing is also the water seal, which I think will not work on the long run. A seal cannot be put on the shaft at the outside because the blade holder is mounted directly on the shaft and is fitted against the inner part of the bearing.–)
