| Re: Looking for ideas on rebreathers
matt
the it sounds like what you are looking for is a powered rebreather rather then hooking your vent to a rebreather. any of ther units that have a bottom mounted counter lung in the scrubber canister would be an easy conversion. mounting a pneumatic cylinder to drive a piston in place of the counter lung would be the easy way to do this. Of course there would have to be a manual level arangement to power it, if it failed. using a surface supplied air source for the pneumaics to give you a decent duration. i would suggest a scr for this aplication due to the fact you are going to be venting a lot of gas anyway and it is simple to build. My only real concern is a loop flood because you will not have an oc bailout option, this could be over come with a second loop to a double ended cylinder with an adv on one side and a opv on the other, run with a manual lever.
rick |