We’re back on the mainland, heading to Dalgety Bay, and we stopped off in Falkirk to see this marvel of engineering.
Threre’s a canal at the top and a canal at the bottom. At rest, the wheel sits with a gondola at each level, filled with water. Barges sail in, and the water relevels, but due to Achimedes’ principle, the weight in the gondolas remains the same. The wheel, in perfect balance, is turned by a small electric motor (same power requirements as a few teakettles, we’re told) and the gondlas stay level thanks to wheels within the wheel. The rotation takes 5 minutes, and then the barges sail out.
It’s truly brilliant.