Northwest Dive Club

Yes, absolutely the manifold + regs is a large part of their 'characteristics' as doubles

The big difference I noticed between the old exempt 3500 psi narrow neck steels and the new 3440 standard neck is the overall buoyancy. The Old steels are neutral to a _hair_ positive when empty, the new steels are soundly negative. I have a couple of each for singles and use the 'new' steels when I know I am going to enjoy having a bit of extra weight (like when I'm using FFM for dive with comms or some such shenanigans) or I'm diving with someone and loan them a tank and they are weighted for the heavier steels

CaptnJack wrote:I can't tell the difference between 7/8" and 3/4" hp100s personally. I have 2 of each and either sidemount them in caves or use them as singles. I suspect the real differences are in those old angled genesis manifolds, lordy those are some heavy valves. Thankfully I ditched all of mine long ago and I'm treating my remaining 7/8" valves with kid gloves as they are irreplaceable now.

Yeah I got lucky and have a normal OMS manifold I believe, not angled

Thank you all

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