Share and discuss your vintage wind generator related projects.
5 posts • Page 1 of 1
Anyone that has stood next to a 6V Wincharger in high wind has most likely had second thoughts about standing in the plane of rotation, especially if it's an original 80 yr old prop. They can get up over a 1000 rpm before the air brake governor kicks in. I started making 6' props about 5 years ago when I couldn't find anyone making them and needed a few to complete some projects. Wincharger had a mill that could crank these props out in minutes. There's just not much of a demand so its hard to justify spending the money on a custom tool. I know several guys that have whittled their own that turned out great. Unfortunately, I don't have those kind of woodworking skills or know any Amish folks. I use a 3D CNC router to profile them. About 1940, most of the wind gen companies started using a more efficient air foil shape called Gottingen 222 which is what I use. A few years ago I had access to the CNC equipment through a community workshop called Techshop...since gone out of business. Now I pay someone $75/hr to run my programs on their machine. I use a tight, clear, vertical grain Douglas Fir which by the way is very difficult to find at least in Texas. Its the same wood used early on by Wincharger. After milling and hand sanding I give them 3 coats of a high quality spar varnish (Epifanes gloss), rough balance if needed, put on 8 mil copper leading edges with monel T50 staples and then trim balance. I'd love someone to go into production so I don't have to make them anymore. They're a pain in the ass and labor intensive the way I make them. Occasionally I come across NOS props but that's pretty rare and they're generally too nice to put out in the elements.
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Thx, I’m always looking for any size props or ones from lesser known wind charger companies. Right now I’m short on 8 ft props. Also on the lookout for a Hebco prop. I’ll be at trade fair if you have props or other parts you want to sell or trade. Send me pics ahead of time and I’ll let you know if I’m interested.