Randy,
Please flesh out your question....I am flying my trusty Bell 212/412 and my #2 hydraulic system packs its bags and goes home to mother....both engines then fail due to food poisoning.....and you worry I might have main rotor RPM problems? Are you implying...suggesting...stating that the dual engine failure has anything at all to do with the uninterrupted supply of hydraulic power to the collective system? You have me cornfused here laddy.....is my alcohol ravaged memory letting me down here....but from what sticks out from the vapors of last nights gin bottle.....is that both hydraulic pumps on the 212/412 are transmission mounted and as long as the floppy things up above continue to turn....one has "normal" control of both cyclic and collective controls.....depending upon which hydraulic system that fails....then maybe the pedals get kinda cranky but not the collective or cyclic. Now are you per chance confusing the unlikely event that you could simultaneously lose a hydraulic pump and Main Rotor Tacho generator and find yourself with cranky pedals, no rotor rpm showing on the big clock looking thing but with no change in noise or rpm and several lights marked #1 Hyd and a gauge showing zero pressure....and the low rpm audio and other gadgets doing their jobs? The Bell product does sometimes shear the shaft from the transmission to the #1 hydraulic pump with piggyback mounted main rotor Tacho Genny.....very similar concept to the Bell Jetranger....except you only have the one hydraulic system there.....thus revert to no hydraulics and no Main rotor tacho genny. More than one Hero has embarassed himself by ditching a perfectly good Jet Ranger after that has happened.
