9.68 min. | 4.2 user rating
This Gravity Engine is designed to run on any water supply, from rivers, streams, treated waste water, wave action, scoop injection, or compressed gas and air. The reciprocation crankshaft ratchet system allows production of power on the up stroke due to reserved buoyancy, and power on the down stroke due to gravity. By changing the water level in the tanks that contain the floats the weight of the float is transferred to the crankshaft in the form of rotational energy. This can be achieved with valves, air bladders, and in this case pumps. Due to the efficiency and scalability, The Reciprocating Water Displacement Gravity Engine, will make unlimited power production, and ships that use no fuel possible.

1.98 min. | 4.4545455 user rating
This video show how to make a steel ball go up hill using just magnets.