ScubaLawyer wrote: ↑Thu Feb 08, 2018 3:18 pm
ovalis wrote: ↑Thu Feb 08, 2018 3:10 pm
You don't need it if you're using a J valve
Now I am intrigued. Don't mean to ask for a dissertation but a little more info would be appreciated. Do I not need the o-ring adjacent to it either? Thanks. Mark
It does not have to be in there. That was their version of an "automatic" reserve. The small hole does just what you would expect, making it hard to breathe at lower pressures. Ascending let you breathe easier, but descending just made it get worse again. There's no mistaking that you are running low on air, it just doesn't wait until the last minute to let you know. (I hope this wasn't too much of a "dissertation", but didn't know how to shortcut it)
I might suggest putting it together with the restrictor and diving with it so you can experience it as originally designed. Then you can always take it out later for easier breathing. Sometimes I hesitate to hot rod an old reg to make it breathe better than original. You miss the feel of what the diving was really like "way back when".
I probably have a restrictor I could send as a loaner for you to experiment with. If I find more than one I'll be glad to give it to you. I'll start looking.