Hi stephendv1,
As you are probably aware I am not a lover of the Chinese turbines, and I have seen to many fail within a few years.
I have 4 new that I was given, 2 at 2kw with 3.2m and 3.6m blades sets, and 2 5kw plus blades, these were all scrapped by a well-known company in the UK as the failure rate was bad.
I examined about 20 odd turbines and not one of them was made like the other, it was if they all were made by outworkers and then brought to a central assembly factory where they were modified /assemble.
Bearings were a big issue, coil windings joints/connections another, and blade problems.
A couple of folk I know have replaced the blades with smaller ones, because when the wind does really blow, you need to get that turbine lowered. If not lowered then it just spins into oblivion.
I have found that the offset for the tail is insufficient, and when really blowing the tail cannot fight the blades. One guy has fitted a double sized tail and he says he has control now, but if it really blows/storm then he still lowers his turbine.
Sometime in the future I will play with the Free PMG's and Hugh Piggott'fy them on a test setup.
Pics 1 & 2 show boxes of blade sets, Pic 3, shows me collecting stuff into the MAZDA 7 seater. Very SAD to see everything getting broke up and scrapped, all those blades and about 30 turbine heads from approx. 4 Chinese manufactures.
I suggest you buy from a reputable supplier.
Or have fun and make a Hugh Piggott or Dan Bartmann, at least you will know that they can stand the winds and give you sensible outputs.
Mods, will seek cover now as the Chinese Lovers hurl abuse.