VIDEO - Turbine is self-starting. Pumps used for demo purposes only (gravity or stored air pressure would be typical sources of energy making water flow). Clear water inside containment cylinder with blue helical turbine runner. No vibration or cavitation observed. Practically identical output in multiple demos (available on request). This demonstration'snumbers: runner at 646 rpm with 810 gpm (1.8 cfs, 1.2 mgd, as little as 0.05 m3/s.) water flow; at 9.2 ft/sec (3 m/sec) velocity. Alternator in watertight blue canister to the left, covered by water spray. Full video & photos include data read-outs. Electric outputpowered a motor off-screen to right. Underwater, just see ripples.