divestoclimb
Contributor
I know of a guy with a jaw injury who can only dive double-hose regs comfortably, so there is a (small) demand for these things outside of the vintage crowd.
Modern Doublehose Regulators???
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captain
Contributor
You pretty much nailed it. The simplest would be a single stage regulator based the old Mistral but that presents a problem with an LP source for BC inflation and octo so it would have to be two stage.
The single stage U S Divers Jet Air used a plastic housing, it was the lowest cost regulator.
U S Divers chose to cobble together parts bin parts to produce the discontinued "new Mistral" about 3 years ago. It was not as good as a rebuilt 35 year old Royal Aqua Master. They had/have the Mentor, an all metal state of the art two hose produced in limited quantities for the U S Navy. Why it wasn't offered on the civilian market is unknown.
That is one of the reasons I have always been interested in very small or light weight second stages and my renewed interest in double hose. My front teeth are implants ---long long ago when I was a child, nuff said. The constant prying down on my jaw and teeth that ALL (with some few exceptions, Tekna T2100, Omega II) single hose regulators have in common results in nauseating headaches and pain. The dive manufactuers have been stuck in "same" think now for a good 25 years or more. Virtually all dive gear today is made for people who cannot swim or think for themselves.
N
No, it must be able to shut off the mouthpiece underwater as well especially if used for technical diving.
N
tahoeguy
Guest
I think there is a market for "such a regulator". The Phoenix Royal Aqua-Master is the perfect model.
I am a recent convert to double hose diving. With the good addvice from guys such as Nemrod, Luis, DA Aqua-Master and many others I decided to go with a PRAM and was lucky enough to find one. I love it! Superior performance and great fun. I own some fine top of the line single hosers, but these days, the PRAM is my first choise. It breaths as well as my Dive Rite Hurracane. In some regards it is better than the single hose, no dry-mouth, no more jaw strain and of course, bubbles in the face . As far as free flowing at the surface, all one has to do, is addjust your body position. I found that long surface swims and be done with a sort of a side stroke or you can go face down and snorkel, no problem. Personaly, I had no learning curve, it felt completely natural.
I would not hessitate to do any sort of diving with my PRAM, I even work classes with it. Try it, you'll like it!
TG
I am a recent convert to double hose diving. With the good addvice from guys such as Nemrod, Luis, DA Aqua-Master and many others I decided to go with a PRAM and was lucky enough to find one. I love it! Superior performance and great fun. I own some fine top of the line single hosers, but these days, the PRAM is my first choise. It breaths as well as my Dive Rite Hurracane. In some regards it is better than the single hose, no dry-mouth, no more jaw strain and of course, bubbles in the face . As far as free flowing at the surface, all one has to do, is addjust your body position. I found that long surface swims and be done with a sort of a side stroke or you can go face down and snorkel, no problem. Personaly, I had no learning curve, it felt completely natural.
I would not hessitate to do any sort of diving with my PRAM, I even work classes with it. Try it, you'll like it!
TG
rstofer
Contributor
Absolutely correct! I remember seeing a regulator like this in the local sporting goods store when I was a kid - say the mid to late '50s. Obviously, looking was all I could do. I'm really looking forward to playing with the double hose reg.
Once I know what I have, I'll be stopping by. At the moment it is buried in UPS somewhere - promised delivery tomorrow.
Just for giggles, I bought a J Valve and I thought I would set up a tank complete with the operating rod and the double hose regulator.
I look forward to spending time in the Vintage section. Thanks!
Richard
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vintagediver
Contributor
Boy, you guys sure like to argue...
I love diving a double hose and have done so continuously since 1969.
They have some peculiar traits that are a function of their design.
I have a DW Streamair, a DA Aquamaster, a Nimrod, and a Royal (73).
But none of these, ever did, nor will they ever, compare with the WOB of a premium single hose regulator. If they did then they would still be manufactured and everyone would be using one. If you think they do....then prove it with some test stats or make mine breath better.
I love diving a double hose and have done so continuously since 1969.
They have some peculiar traits that are a function of their design.
I have a DW Streamair, a DA Aquamaster, a Nimrod, and a Royal (73).
But none of these, ever did, nor will they ever, compare with the WOB of a premium single hose regulator. If they did then they would still be manufactured and everyone would be using one. If you think they do....then prove it with some test stats or make mine breath better.
The Royal Aqua Master in particular can be adjusted to breath extremely well.
Are you using the new silicone diaphragms? That alone from my testing will bring the inhaling effort down about 1/2 inWC.
Also the new improved mouthpiece valve cages have the wagon wheel spokes shaped to avoid the valves from sticking when wet. The new valve cages in combination with the new silicone valves also make a dramatic difference in reducing WOB.
When was the last time you serviced or had your RAM serviced?
Most of us are pushing the performance of our DH by fine tuning and adjusting our regulators to a level far beyond what I used to do back in the 70's.
Bryan at VDH does a great job at servicing this regulators and everyone I have heard seems to be very happy with the performance improvements after service.
I (and several other in the group) do our own service and we tend to push the limit even further. I have to use duckbill long enough for the exhaust slits lay precisely at the center of the diaphragm or in some positions the water column differential from the diaphragm to the exhaust tends to cause a free flow.
All of my RAM and Phoenix Royal Aqua Master are set to have a cracking suction effort to 0.6 inWC or slightly less. Most any single hose that could be adjusted to that level will have a free flow in a head down position due to the exhaust being higher than the diaphragm.
IMHO, if you need help making your RAM breath better, you found the right group. You may also want to join us at VintageDouleHose.com and VintageScubaSupply.com.
As I mention, with many of the new replacement part at VDH.com we are pushing the performance to a level never experienced before.
I hope this helps.
RikRaeder
Contributor
Aqua Lung: First to Dive
You mean something like this? It's in the Aqualung 2008 catalog in Japan, but I didn't see it on their website
You mean something like this? It's in the Aqualung 2008 catalog in Japan, but I didn't see it on their website
That has been discontinued and it was, lets say: a less than optimal design.
If you do a search you will find what many people think about it.
I own a few, mostly collecting them as an interesting piece, not a good performer.
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