info on low wind blades 5-15 mph

hi everyone, I was talking to a guy today about blades for low wind. he was under the idea that he would need 3 blade raptor setup because he needs speed and the lower the blade count the higher the prm would be, raptor blades ARE ONLY HIGH WIND BLADES and will not work in low wind areas. in a LOW WIND area most of the blade count and type rules DO NOT APPLY, wind power is not proportional to wind speed, its better than proportional. the amount of power in the wind at 20mph is about 8-10 times the power in the wind at 10mph. for low wind the blade count and type are critical for success. I have found the hemi blades to be the best blades by far in low wind, also a count of 5 blades minimum for the best results. 3 blades work but will be lacking some speed and torque dependant on the gen used. it is also important to have the gen on a 5 deg angle upwards, I have tried three deg but find a better start up at five deg, cogging can be a BIG problem in low wind areas, the start up is so much higher that your watt hours will be down a great amount over time, 7 blade hemi system can help a lot but costs more and no one to my knowledge no one makes a 7 blade hub, you will have to make your own. 2 three blade hubs can be put together to make a six blade if needed. im trying to make a vary good set of pvc blades for low wind but my design still needs some work at this point, the start up is almost perfect but the speed is lacking at this point, work will continue. when it comes to low wind and if your purchasing your blades you must get the hemi blades to have any chance from my 4 years and 8 sets of blades experience with the small mills. there is only so much power in the wind so you need to use as much as possible or all if possible, the blade type and count are critical to success in any low wind area. I use 3 and 5 blade hemi blades, the 3 blade system is used mostly for testing and the in use mills all have 5 blade hemi systems. I had a 11 blade raptor system I was sucked into buying and it didn't work half as good as the 5 blade hemi system. I don't care witch pma / pmg or gen you have the blades is the only chance you have to make it work properly, home work home work home work. remember that low wind is its own beast and needs to be treated as such, a hole separate type of wind mill. the most amount of lies are in the low wind end of things so use caution when you here the term LOW WIND. see the next post. thanks for reading. the hemi blades can be found at prestowind.com.