Yeah Pierre, how do you think I know all this? I’ve taken my turbine designs full-circle, going through several multirotor designs, all the way back around to the standard side-furling concept with a gravity-tail, to many single-rotor versions, seeing how they make power and most importantly, survive high winds. We have a large collection of burned-out stators, for example. It took several years, and much trial-and-error, to get even just one model fine-tuned to survive storms without burning out. It’s all about limiting output. I’ve found many valid niches and configurations within this spectrum. One, as I have mentioned, has been running for something like 9 years now, with one blade replacement a few years ago, with no generator burnouts and no bearing failures. The reason ST designs have success and promise is they do not try to reinvent everything, and do not throw away 2000 years+ of knowledge, but rather use the knowledge to get to some next-step workable configurations. My designs go mostly forwards, not backwards. However, there are factors lately I’ve been realizing point toward some of my earlier concepts having more potential survivability than the ones that veer back more toward the standard design. You don’t really know what you’re dealing with until you’ve had a given model running long enough to experience all sorts of conditions, especially strong winds, gusty winds, turbulence, and sustained high winds which can go on for hour after hour, slowly cooking your windings. You can’t know if a given model is good until you’ve had many operating, for years, in many locations. This is why people testing a model designed from their desk, in a wind tunnel for a few minutes, are usually delusional. Making good power is not that hard, it’s controlling it that is difficult. Imagine your assignment is to develop a better formula-1 race car to compete with the top designs in the world: As I’ve pointed out, most people show up with a wheelbarrow. Assuming you even know how to make a machine with good suspension, steering, power, etc. you have to make sure you will not be the next Dale Earnhardt and hit the wall at high speed. You need failure avoidance. Your race car needs good handling, suspension, steering, and good brakes to match the power of its engine. All that is probably more important that how much power it makes. I think of wind energy systems as sophisticated, automated aircraft. Every engine has a throttle for instance, because if it is powerful, you need a way to control that immense power. You can’t just say “It’s always floored!” You will crash. You will “hit the wall”. My repeated quote: "Overspeed protection: It’s not the main thing, it’s the ONLY thing.