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Poogweese

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Location
Ketchikan, Alaska
# of dives
I just purchased a "Mistral" and have taken it diving twice now...I love it! Anyone else have one that likes it? I'd like to try a real vintage set-up with a Phoenix nozzle but that's in the future;)

Poog:coffee:
 

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......couldn't help but notice you've got 2 octos on your set up ? ? ? ...just wondering .....Karl
 
I have one but have only worked with it in the pool. Need to finish rigging it with octo, gages, etc.

How does it work in our cold Alaska waters. Did yuo have much extra bouyancy from the air in the hoses.
 
covediver:
I have one but have only worked with it in the pool. Need to finish rigging it with octo, gages, etc.

How does it work in our cold Alaska waters. Did yuo have much extra bouyancy from the air in the hoses.

It works great-so far! Plan on a couple more dives this weekend. Re: I have not noticed any change due to the gas in the hoses. I do have to position my tank on the BP/W a little differently, but that's no big deal. Take your out and enjoy it:D


Poog:coffee:
 
Poogweese:
The yellow Jetstream routes to a pony bottle;)

Poog:coffee:

...oh, OK, I see......... I'd half kicked around getting a new Mistral myself, but I'd read numerous reports of free flow issues, both underwater and at the surface, depending on the position of the mouthpiece relative to the first stage, if the mouthpiece is out of the mouth....... so in the end I chose not to buy one....but I can understand it's advantages to someone living/diving in Alaska.

Karl
 
scubafanatic:
...oh, OK, I see......... I'd half kicked around getting a new Mistral myself, but I'd read numerous reports of free flow issues, both underwater and at the surface, depending on the position of the mouthpiece relative to the first stage, if the mouthpiece is out of the mouth....... so in the end I chose not to buy one....but I can understand it's advantages to someone living/diving in Alaska.

Karl

Funny you should mention that...after my back roll off the boat today it did start to free flow:( After climbing back in the boat and letting it sit for a while it was fine, so I'm guessing operator error;)
Anyway, we're going back out tomorrow for 2 dives and I'll be taking my old reg just in case;)

Poog:coffee:
 
Any double hose regulator, when the mouthpiece is out of your mouth and higher than the diaphragm will free flow. This is due to difference in the pressure (water column) from the diaphragm to the open mouthpiece.

I always tuck my mouthpiece under my chin when it is not in my mouth.

Raising the mouthpiece above the diaphragm can be thought as the double hose equivalent as pushing a purge button on a single hose. It can be used to clear the water out of the mouthpiece if you are out of air to blow it clear.
 
I do own a couple of new Mistrals, but it doesn’t compare in performance to a vintage Royal Aqua Master. The larger diaphragm in the vintage RAM provides a huge mechanical advantage. My modified Phoenix Royal Aqua Master does add all the modern conveniences of the HP and LP ports.

From my observation the new Mistral can have good performance.

To add comfort I would add hose weights. The hoses are in the new Mistral were adapted from re-breather hoses that tend to be larger than vintage hoses and therefore too buoyant. I felt the mouthpiece pulling up when I was looking horizontally. I am still looking for hose weights, but I found some from OxyCheck.

A double hose regulator doesn’t really need the large hoses of a re-breather since the breathing effort is reduced by a venturi assist (versus breathing against counter-lungs).
 
Luis H:
Any double hose regulator, when the mouthpiece is out of your mouth and higher than the diaphragm will free flow. This is due to difference in the pressure (water column) from the diaphragm to the open mouthpiece.

I always tuck my mouthpiece under my chin when it is not in my mouth.

Raising the mouthpiece above the diaphragm can be thought as the double hose equivalent as pushing a purge button on a single hose. It can be used to clear the water out of the mouthpiece if you are out of air to blow it clear.

Thanks Luis! Like I said, "Operator Error" on my part, I'll make a point of keeping that mouthpiece below the diaphragm tomorrow. :)


Poog:coffee:
 

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