windshafts
A windshaft is a horizontal beam in a windmill that transmits the rotational power generated by the sails to the machinery within the mill. It is a crucial component of most traditional windmill designs, particularly tower mills and post mills. The windshaft is typically a large, sturdy wooden beam, though in some modern designs metal can be used. It is connected to the sail-bearing arms at one end and extends inwards to a brake wheel or a gear system at the other.
The rotation of the sails, driven by the wind, causes the windshaft to turn. This rotation is