See replica of 1800's John Keely's self running (all brass) water hydraulic motor with useful output balanced flywheel. It had central rotating 4 way valves that produced 50lbs. internal water hammer pressure. Unit was seen running sawing wood after careful alignment timing. Patent application readable and can see sample model on You Tube video. Also in New York years ago, there was a self running air compressor mounted on tank. Output hose line was out the window operating lawnmower spinning blades, cutting grass. Compressor initially was hand turned until gauge said proper pressure in tank. 40lbs output air ran air cylinder attached to crank on main compressor shaft. to keep it going. The balanced spoke type heavy rim flywheel had extra energy coming from machined 3 parts vortex tube that heated air chamber insulated for higher pressure. Tubes kits are purchasable or read back issue science mechanics magazine article on homemade vortex tubes of various internal sizes washers for hot and cold levels.