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Huish is a self-created supply chain issue and the Hollis CS issues are very well documented and have not improved, though Huish isn't known for their CS either. Again, both of these are well documented with dealers at least in the US. It may be different elsewhere. It is not a "me" issue since I am not dealing with them directly but it is a sentiment echo'd by many.Is it a CS issue or a supply chain issue? They aren't the same AFAIK. There is no issues with their supply chain beyond the global supply chain issues. They are doing very well compared with many others.
Nope, this isn't the case.
It isn't an issue for 99.9999999999999999999999999999999% of divers out there so why is it an issue in the context of this thread? If I were diving to beyond 100m, I'd be using a Scubapro, Apeks or Atomic M1 exclusively nothing else. (In reality, to dive these depths, I'd be using CCr not OC).
It is not possible for an Apeks XTX to be tuned to factory setpoint and dive well beyond 200m with an environmental seal installed, that defies how regulators work because the IP increases beyond what the second stage balance mechanism can compensate for. The specific depth that it tips is not fixed because of variability in spring rates, but they will all freeflow because of the over-compensation for ambient pressure at some point. When going deeper than 100m the second stages are typically detuned a bit *closer to what most people think of as "octopus tuning" vs "primary tuning". They breathe normally once you get all the way down.
While it may not be an issue for anyone outside of a handful of divers the title of the thread is discussing over-balancing of regulators.
Scuba Engineer made this chart a bunch of years ago. This is a function of size of the environmental transmitter vs the diaphragm transmitter which gives the "boost" ratio. This was done with an Apeks DST but it will apply to all of the original style Apeks regulators *not MTX, etc*. You can take this and check it for yourself if you don't believe me. Set the IP to 9.5bar and tune the second stage how you would normally. If diving to 100m then crank the IP up to 11.5 and see if it freeflows. If you think it can go to 200m then crank it up to 13.5bar and see if it freeflows. The point that it starts free flowing can be referenced against the chart below to find out its depth rating with the environmental seal installed. Anyone else can adapt this chart to their regulator by calculating the ratio of the area of the environmental transmitter to the seat on the first stage diaphragm and extrapolate out.
I'm confused why you said you would choose regulators that are only certified to 50m depth and are ignoring Poseidon which is certified to 200m?