First set of regulators for a newbie?

[Marie13]

I recently went through SDI OW and I know others who've gone through it as well with no tables. Fine with me as I suck at math.

 

[dumpsterDiver]

A computer may not be necessary, but I think they are particularly useful in helping the new diver learn what an acceptable ascent rate is. After a bunch of dives, you can probably feel what a good ascent rate is, until then, I think a computer is ALMOST essential.

 

[Bob DBF]

A computer may not be necessary, but I think they are particularly useful in helping the new diver learn what an acceptable ascent rate is. After a bunch of dives, you can probably feel what a good ascent rate is, until then, I think a computer is ALMOST essential.

Not just a new diver, it took a while for me to get used to 30'/min ascent when I got my first computer, couldn't quite get the hang of half as fast as my smallest bubble so I needed the ascent rate feature. When I started diving the computer I left the old Navy tables behind.


Bob

 

[Jherny]

Just got my regs and feels like Christmas morning! Can't wait to try them

 

[CptTightPants21]

That's because once you start buying scuba gear it never stops, and there is no money left for Christmas!

 

[oc in az]

Congrats!!! I love the smell of cardboard in the morning...

 

[Jherny]

hahaha! i know i already have the girlfriend making comments about how much i been spending and all i talk about is scuba...

 

[Chip Elliott]

Just received my set of TX50's this morning! WOOT! For 299.99, I think it's a hell of a deal.

 

[Jherny]

Just received my set of TX50's this morning! WOOT! For 299.99, I think it's a hell of a deal.

heck yeah!! awesome deal! Regs feel great and you can tell they will last a long time. that 1st stage feels indestructible haha

 

[eelnoraa]

Do they conduct heat or hold it? They can't do both. Take two pipes. One metal and one plastic. Stick one end in ice water and hold the other end and tell me which one feels cold first.

Now put your mouth to the end of each and start exhaling through them. Which one (still) feels warmer in your hand?

What reports have you seen of 212s freezing up, other than the one I posted here a year and a half ago?

Having a heat sink on a first stage makes sense. The only source of warmth it has is the surrounding water. But, the second stage has a constant injection of 98 degree air. Why would it be good to maximize conduction of that warmth from the inside of the reg into the surrounding water?

This logic totally incorrect. The issue with frozen 2nd stage is NOT from surrounding water. The coldness, if you will, is from adiabatic cooling from air expansion from MP to ambient. The source of the ice is the moisture in your breath. So you 2nd stage is frozen from inside out. With metal barrel, what happen is the water actually warming up the barrel to prevent icing. With plastic barrel, the "warm up" isn't sufficient, so the inside your 2nd stage freeze first. Once frozen, free flow start, things will just get worse. So whatever people told you plastic is better, they are just trying to sell you things that can't sell.

Back to Hollis DC212, it is not a good 2nd per today's standard. I have had one. It was my first reg. I ditched it for HOG. I will never buy another Hollis regulator from that experience. It is that bad