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I tried for days to resist temptation and just leave it there. But I could not. ;-)

I measured one (an LP30) before posting, and it was about .150" per one of my dial calipers. I could break out a decent mike and ball bearing and measure it down to tenths, but that seems like overkill. In 2006, Vance Harlow wrote: "Acccording to the DOT specs, Steel 72s must have a minimum...

So I guess I'm with Jim on this one. BP/W is one size fits all because they're infinitely adjustable

Yeah, maybe. Steel tanks aren't anywhere near 1/4" thick anywhere, though. The walls are about .150" thick. The one I measured some time ago was something like .015" thicker on the bottom compared to the sides (going by memory). I'd measure the groove and depending on its maximum depth I...

OK... ;-)

Steel or aluminum? BTW, no way the bottom of either one is anywhere near 4" thick.

My first instinct is "find one that fits." But on further thought, how old, and how many dives?

My Seiko kept leaking. Seiko said it needed to be serviced every couple of years for about what a new one cost on Amazon. I realized eventually that I was carrying it for no good reason, and along with other stuff I won't use on a dive, it now gets left behind.

OK. Read it. So? Maybe you missed this part of my post: "I fully support connecting generators to houses in accordance with code." Code calls for an interlock device of some sort. Perhaps you don't understand the point I was trying to make. Even a big (25K) home backup genset won't run a...

That hazard is theoretically there. However, I feel sure that if I were to fail to disconnect my main breaker before plugging in my genset, I'd briefly be trying to power my entire neighborhood (and more, actually, as currently wired to the grid). Trust me that my generator would pop both...

Nope, not hard to do. However, with the breaker interlock we have anyone can do it without instructions other than "main breaker off, generator breaker on." My better half has never had an electrical safety class, wouldn't know Ohm from Kirchoff, and has never heard of how easy the power law...

Thanks for assuming I'm sane enough to be using Trimix, which of course I certainly was. To reiterate, I was using doubles, not a single. (Yeah, I know you know, but some people have "I haven't read all the posts but..." or reading comprehension issues of or both.) I haven't done any dives...

I have had one of mine freeze. It only happened once. I switched to the other reg on my doubles, and within a few minutes, the freeze had thawed and I returned to the original reg and continued the dive. Water temperature was about 42F and depth about 225'. I was searching an area, so...

I know how to do that. I've practiced it, and it worked when I was younger. However, it doesn't work for me any more, as I said in post #54. Moreover, even if I don't lose the mask, there's more workload in trying to manage deco stops and gas switches with one hand holding my mask on or...

My toes are unharmed. No worries. I'd prefer the LP85s myself, having owned HP100s. I'm gettin' tired of looking at the HP80s, is all.

I should have mentioned that they're Fabers, painted white, that I'll guarantee they'll pass hydro or refund you if they don't, and that I'm willing to be very reasonable on price. (I got them for a family member who lost interest shortly afterward.)

I'd rebuild them, provided that the tank and valve threads are not worn out of spec. Valves come in oversizes. This is because as the threads wear from taking them out and putting them back in, the number of turns (not torque) required to seat them to spec might not be possible to achieve. I...

I have a pair of HP80s with bands and Genesis DIN manifold with extra rebuild kits. Out of hydro but stored with pressure. PM me if interested. In the Mid-Hudson Valley.

Why?

I carry a backup mask in my right thigh pocket. I'm old enough that I need corrective lenses to read my computers, so the "air bubble in my hand over one eye" trick no longer suffices. Well, maybe if I squint hard after losing the backup mask. Maybe. But the backup mask is a better strategy...