My god i think you may have solved the worlds energy crisis!!!! Perpetual motion :cool2:
We only noticed cos he could hear the ice cracking and then he saw the 6 inch gap round the edge! I was too busy in the wheel pit playing:red: He went out to try and find the out flow, which he did and then he heard the ice braking on the header pond wich is filled from the lake.
We had an idea where the wheel was fed from but we were unsure. (I also had visions of said valve breaking off in my hand , getting very wet, draining a huge lake that also feeds a new 500 kva hydro system and flooding a small town:undecided:) Turns out the worst that could happen is an empty header and a lower level in the small lake.