Once I read claims of 4kw on top of a scaffold pole,
Then I am quite content to tolerate a good fairy tale or joke Everything else about the add should be treated with scorn and not allowed near the verges of reality.
The prop of 69.9 inches in diameter, so blades of less than 3ft. It a joke.It would have problems putting out even 1kw. The true output of that yoke is somewhere between 300watt and a top output of 800watt, You would have to be in the middle of a force 8 at least to get the top whack.
The thing that annoys me is that young couples who want to go green and save the planet will actually believe this rubbish and throw their money away on it. 15 years lifespan,,

Our Y/S is built like a tank and has bearing that you would find on a tractor. It has furling gear ,etc etc,, It weighs 56kgs out of the box and for all its good qualities I had to reduce the prop to 9ftin x 1kw
order to survive the storms and even when a nasty one rears it,s head I lower the tower because I want to extend the life of it. I believe it is pointless leaving it up to get thrashed needlessly.
One thing That I have learned down through the years ,is that 95% of the people selling wind turbines never fly them themselves. with each increase in exaggerated specs and ouput the price goes up and up till the final seller is quoting absolute wubbish like the one in question.
Believe it or not, I will eventually get people visiting me and showing me the pic of that turbine that outputs 4kw. They will say that it is Quare and handy,.All they need is a scaffold pole and it can be fed through the solar inverter. They don,t realise it but they are praying out loud. I used to get annoyed but not anymore. I just say,,trust your instinct.
Biff