One wood burning Stove Whole house heating - Poujoulat Confort Plus http://www.poujoulat.co.uk/contenu/162/51/1/presentation/complete-chimney-solution-for-stoves-inserts-fireplaces-and-gas-fires.html
Nice!! This is the Venger Wind Turbine mounted on the OMRF Building in Oklahoma City. Finally a Wind Turbine that is beautiful and functional.
How to make airfoils that work using 6mm depron. Construction method, sizing, links for materials, photos and videos.
plumbing - Water Ram Pump - free pumping using the power of pressure
Extruded Aluminium Rudder, Daggerboard and Centreboard for catamarans and dinghies
Wing Design - CONVENTIONAL AIRFOILS and LAMINAR FLOW AIRFOILS
DIY: Wind Turbines
The Tesla Turbine & How it works - YouTube