Work in progress.. My first windmill build 12.5 foot diameter. I am making some progress every few days or so. Like most of you I do not have a lot of time to...
Very nice. Love the powder coating. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org http://makingthewebwork.blogspot.com/...
(Off Topic Response and question) Great work! From the looks of that tower Saw Horse :O you look like you spend a lot of time on the radio also, it looks like...
(Off Topic Response and question) Great work! From the looks of that tower Saw Horse :O you look like you spend a lot of time on the radio also, it looks like...
Tower is a Rohn HDBX 48 foot on a tilt over base, good for 18sq ft wind load. The wind load needed for the windmill does have me concerned. I have not been...
Hello All, I am very impressed by the workmanship of Prog_I_am's generator. It has spurred me into maybe attempting to build one for myself. Has anyone figured...
Hi Mike -- we have a 12-footer that's about a 2kw machine, and our 17 footer and 20 footers.....peak power ratings are deceptive and not that useful; better...
people tend to underestimate just how sturdy a tower is needed and there have been tower failures. (We use 12 inch steel tubing now). Dan, Try Ductile Iron...
Hi Andrew -- We've had no problems ourselves with steel tube towers. We prefer 12 ga tubing over schedule 40 water pipe because of how the strength of steel...
Hello Dan, I posted a query recently about details for larger axial flux generators. In response Dan replied..."and we have free web pages with construction...
Did you even look? Click on the link "Wind" and scroll down - there's a whole list of different projects detailed there including the 17 and 20' mills. Have...
Hi Mike -- sorry for the delay, I'm traveling; just finished the Small Wind Conference, and we are giving a couple workshops at the fair. This page has all our...
And, since smaller wire is needed to carry three phase AC than DC, it's also cheaper to move that power from the generator to the battery. Not to mention more...
Thanks Dan, I finally found them. Not sure why I couldnt see them earlier....but I had looked, honestly. The 17 footer looks like a very nice generator to try...
http://www.magnet4sale.com/product.php?productid=16954&cat=354&page=1.here is a address for some epoxy coated magnets. the price seems very reasonable. but...
Pulling force is related to size. Induced voltage in a wire is # of lines cut per unit time, thus velocity and flux density. The higher the magnet number the...
Hugh Piggott used N35 in the examples in his books, and they are a good price. Although http://www.magnet4less.com/ doesn't carry N35 any more, and have the...
Hello, are there any guidelines for choosing magnets, size, shape and strength in relation to the output power of the generator. How do Ceramic compare with...
ceramics will have greatly reduced output. a 500 to 1000 watt turbine should have neodymium's, grade n40+, approximately 2" x 1" x .5" or so. Steve Spence ...
Your flux will increase with thickness, so stacking magnets will increase the force. Some incidental losses may occur, they they will be very minor. Intermag...
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