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EdHoo wrote: > > Hello all, Some information snipped.... > The D400 or the G250 can be readily used with the Odin 1st stage. The > only adjustment to make is to detune the intermediate pressure to around > 140psi. The G250 and D400 have maximum intermediate pressures of > 160psi. I was told that the Odin usually is set for 175. Because the > regulator was designed to work at 175psi and we are using it at 140psi > there might be an alleged lost of performance. According to my manual the Odin secondary pressure is set at a MAXIMUM of 145 psi so I see no reason to "detune" it to use a SP. Am I missing something here? The Cyclon 5000 is 167 psi and the Cyclon 300 is 181 psi max. Maybe that is what people are thinking when they talk about adjusting it lower than nominal. But I thought we were talking about Odins. > A negative aspect is that Odin 1st and the 2nd stages are _BOTH_ > upstream valves. It means if anything goes overpressure they slam > shut. In contrast downstream regulators would free flow and you could > still breathe (I new about the 2nd stage and that is probably why George > trashes it all the time, the 1st stage is news to me). I'd like to know what it would mean to be upstream in the 1st stage. And how could the 1st stage "go overpressure" and slam shut? The input to the 1st stage should not be able to go overpressure in the sense that it might happen to the second stage. It is the tank pressure! Can someone explain this statement? I have had a 1st stage freeze open one time (it froze between ice dives in the air) but the second stages still breathed ok. The overpressure valve on the hoses just blew the overpressure air out. As I said in an earlier post, after that I always use the environmental cap for ice diving. They do work. > As for the ScubaPro stuff... > Other stuff snipped that I have no opinion or questions on... Take care. -- Dave Mabry dmabry@mi*.co* Great Lakes Maritime Institute Underwater Research Team NACD NSS-CDS #42872 -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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