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  • From: Tvoivozhd <tvoivozd AT infionline.net>
  • To: homestead AT lists.ibiblio.org
  • Subject: [Homestead] Wind turbine late notes, six-bladed 4.3 mph startup
  • Date: Sun, 07 Nov 2004 15:15:29 -0800

This is stuff I ran across in a futile attempt to find information on a counter-balanced tip-up windturbine pole, which doesn't need a blade brake, old Jacobs pitch-control etc. to limit rpm's in a high wind---the tip-up lays over in a high wind, the amount dictated by the counterbalance weight of sand, cement, whatever.

I've got some such tipup pole designs in my architectural files, but damned if I can fine any that made it into the yo-yo search engines which don't search for a damned thing but the number of previous hits.




http://www.windpower.org/en/tour/design/
(wind turbine towers and blades both oscillate at different frequencies---around three second for towers, one second for blades.)

http://www.westwind.com.au/towers.htm
(guyed tower raised, lowered by truck or tractor)

http://www.wind-works.org/articles/lowering850.html
(lowering a 64 foot tower with a griphoist)

http://www.ilr.tu-berlin.de/WKA/windbooks/workshop.html
(Piggott book, European wind turbines, Tir For hand-carryable griphoist for lowering, erecting wind turbine towers)

http://www.fieldlines.com/story/2004/10/18/92629/024
(raising, lowering turbine tower with Harbor Freight wormgear-winch, here powered by half-inch electric drill)

http://www.otherpower.com/trips3.html
(how to design, build, reproduce a wooden windturbine propellor blade---airplane modelmaking magazines have archives on making blades from foam, forming the airfoil sections with nichrome hot wire, covering the toam with epoxy and glass cloth.)

http://www.sixriverssolar.com/wind_power.htm
(a wood telephone pole makes a good wind turbine tower---needs no guys other than to erect and take down on a hinged-base)




  • [Homestead] Wind turbine late notes, six-bladed 4.3 mph startup, Tvoivozhd, 11/07/2004

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