I have just completed the assembly of a DA Aquamaster with the Phoenix, HPR, DSV and second stage diaphragm from Bryan. I have set up the IP at 135, the second stage levereven with the bottom of the LP can, and everything holds steady under pressure. I took it to the pool yesterday. I set the position of the can very low on the VDH DH backplate. Between the shoulder blades as recommended. With my wing configuration the can is recessed about an inch back from the backplate plane. Because of the curve of my back I suspect the cans are 3 " from my back UW.
In the water the second stage is pressurized without demand. Nothing crazy, but it takes some effort and chipmunk cheeks to keep it contained. In horizontal trim it takes some sucking to initiate and maintain flow. More than I was expecting. Substantially more than required with a single hose reg.
Does all this seem normal? Should I try to bring the cans closer to my back? Does IP of 135 seem OK? Should I start fooling around with blocking the venturi ports? Or should I just get used to it?
I got into this more to approach fish easily more than to dive vintage or look cool. For me it will come down to the benefits of the remote exhaust vs ease of breathing and ease of use. I have been diving for quite a long time, but this is my first experience with a DH reg.
Any advice or encouragement will be much appreciated.
Sandy Crane
Boise, Idaho.