Yup, that was my first regulator!
You didn't have to put as much weight on your weight belt when diving it.
O2
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Yup, that was my first regulator!
Not sure what you mean. You used an octo that had a SPG?Indicated first used by cave divers in 1970s
It was on the market via Sportsways and being used in Kalifornia in early 1961
I was one who had and used a Sportsways Navy Unit in 1961
Complete with SPG''
SDM
Can you provide the Sportsways 1961 link to clarify your statement?
And the big 3 safety advances (SPG, Octo and BCs) all came from cave diving. Though in cave diving we don't have an octo, we have a backup.
This publication says octos started with cave divers, as well as some other innovations. https://doi.org/10.5670/oceanog.2002.30
p104 of that publication: The recreational dive community has popularized the "Octopus" system. An additional breathing regulator ("second stage") is added to simplify sharing a single source of gas. First used by cave divers in the early 1970s, diving instructors in the late 1970s, and then adopted bv the recreational training agencies in the early 1980s, the Octopus or alternate 2 nd stage has become standard for most open-circuit dive operations.I read the book review linked to, and didn't see where it said that. Where was it? I did see where it said octos were recreational equipment.
So Sam's input is missing the point? The cited article is talking about octo's...he appears to be talking about SPGs.You can download a great many catalogs here:
https://personal.filesanywhere.com/fs/v.aspx?v=8d6d638a5f6075b5a46a
Here's an image from the Sportsways 1961 catalog:
Here is an image from the 1960 US Divers (now Aqua Lung) catalog. Their SPG screwed into the cylinder valve but the Calypso regulator in the 1961 catalog had a port for in it on the first stage:
As I recall, Poseidon was the first company in the US that really pushed the Octo in the late 1960s. Sportsways was the first US company with first stages that supported two second stages plus an SPG, though they didn't sell second stages separately in their catalogs.
Seriously? Why would they? Cave diving was more taboo than voodoo gas in the 80s.Interesting. When I certified in 1985, the class and the PADI manual discussed all three as recreational equipment, and we didn't hear a word about cave diving. Nor do I recall cave diving being mentioned in any of the magazines or catalogs I ran across in the eighties.
So Sam's input is missing the point? The cited article is talking about octo's...he appears to be talking about SPGs.