Here are some links to various articles and videos of custom-built wind turbine projects:
http://www.mdpub.com/Wind_Turbine/
http://www.tlgwindpower.com/200_pma.htm
http://www.tlgwindpower.com/ametek.htm
DIY-1000-watt-wind-turbine (PDF)
http://www.iwmwaterjet.com/