The main block of a drop power station 1, wherein the first and second rotatable elements are wheels having {HEAD ~ certain and different speeds} of {TAIL ~ rotation} and having friction disks as a connection between sub systems 
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The main block of a drop power station 1 , wherein the first and second rotatable elements are wheels having { HEAD ~ certain and different speeds } of { TAIL ~ rotation } and having friction disks as a connection between sub systems
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH