Quote: (Originally Posted by
decoweenie)

Was the BioPack-60 designed to be used u/w ?
Quote: (Originally Posted by
MHD)

Close but no cigar
the units are based on the abortive Cobra O2 unit. It certainly had commonality with late Biopak 60 etc, but was designed as an underwater unit.
Matt
How close is this?

I knew I’d seen this basic rig before- took quite a cull on the HD to find it.
I suspect it goes back even beyond the Cobra.
The CCR 25 was Biomarine’s attempt to build a marine version of the BP60 and sell it to the military. IIRC it never went anywhere. When Rexnord bought the BP designs, they tried to briefly market it to the public as a pure O2 Rebreather. One “unique” feature was that it came w/ a float tethered to the rig that enforced a 25 FSW depth limit in your basic crude-but-effective way.
Add a diluent tank, OTS gas controls, a BP240 scrubber & dome, and some very nice modern electronics and I believe this is essentially what we have here. If the *highly* restrictive ‘half moon’ choke point of the BP60/ 240 center section has been corrected (all you guys who’ve tried converting a BP know what I’m referring to), this has the potential to be a nice little mass market recreational rig.
Ken