blades and hubs

hi everyone, new to blogger, the hologram effect is for sure true with blades. there are thousands of blades on the market, iv tested 6 different and will give my own thoughts from my testing of the blades. ,first im going to sum all the sword type blades like the raptors together because all results were almost identical . these blades ARE ONLY HIGH SPEED - HIGH WIND type blades, they might work in some areas but for the most of us there no good and to have any chance of them working you will need 9- 13 blade system, plus the hub and shipping - if you live in Canada this is a 750.00$ blade system, absolutely crazy, and there no good in lower wind areas. next is the china blades with the pocket near the hub and wider tip, these works way better than the sword type but are mid wind type blades, they are a little better at  start up at lower wind but are lacking a little if you need the speed as the small mills do. the HOME MADE blades are ,  well just that, some take pride in there work and some don't. iv tested only one set and was sent in the wrong direction for a while, I seen a test of one set made by a  guy in Germany and started to rethink the home made blades . after several hours of searching the net I found some people that did a nice job and with good results, my testing of the home made blades will continue for some time to come as I have at this time 6 mill projects in the works and of varying sizes. the one thing I have found is to only use pvc, NOT abs , the abs ones iv seen on youtube coming apart is wild to see, iv been told by good sources to only use pvc and only the green pipe. next is the metal blades, although the are hundreds of this type too , iv tested two types, the first one and the best of all my blades for any wind up to 30+ mph and start up at 4 mph, are charging at 7-8 mph are made by daddyomomma and are the hemi blades, a vary nice older fella who bent over backwards to help me and shopped around for a better shipping price for me, one of my top ten best purchases of all time. the other set is not work the weight in scrap. the hubs are fairly straight forward but iv seen some good ideas for test stands were your able to adjust the pitch and length , more for testing and to find the optimal point to set and build a permanent hub . one person even added a leaver system and springs to make a variable pitch system, not sure how it worked out but looks like an idea worth playing with. the mounting of the hub with a thick backer and a thick washer at the front is a absolute must, every time iv tried without both of these in place iv had a failure or a sign of a failure trying to happen , this is on the smaller mills. also all the failed ones were cogging mills and had vibration do to cogging. I  will not even mount a gen of any type for tests that have cogging any more, the end results are most often poor output to low output on these units [ the alternater  type ] im not a big fan. SO if your needing a set of blades and are willing to do the work, look into home made pvc blades, a good starting point is [a poormans guide ] on the net, a vary nice and helpful guy with really cool ideas. anyway thanks for reading. I forgot to mention , check out warlock.com.au they have a vary good blade calculator and several other helpful tools. thanks for reading.
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