Worthington tank desire

[Skippy]

Why are recreational divers obsessed with worthington 100's?

[rddvet]

Seems like a silly question becausw the reasons are similar to tech diving. They trim well, hold a good amount of gas, dont get buoyancy swings when breathed low like a white faber does, and they allow you to shed weight because theyre heavy.


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[tbone1004]

Why are recreational divers obsessed with worthington 100's?

They are heavy as hell-about 3.5lbs negative which is about 2lbs more negative than PST HP100's and about 3lbs more than the Fabers
They are hot dip galvanized which makes them much more stable with salt exposure than the painted galvanizing on Fabers.
They use normal valves unlike the old 3500psi PST's and they aren't as rare as the E7-100's from PST that were only made for a couple years and don't have the risk of their special permit not being renewed.

If I was down the Cape doing single tank diving I would seek them out too since you want the weight for the thick neoprene/drysuits when diving single tanks.

[Confuted]

The bouyancy swing for a cubic foot of gas is the same no matter what tank you put it in.

[rddvet]

The bouyancy swing for a cubic foot of gas is the same no matter what tank you put it in.

Then how do youbexplain the old faber whites getting buttlight way easier than the wortingtons


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[tbone1004]

The bouyancy swing for a cubic foot of gas is the same no matter what tank you put it in.

He's talking about the shift from negative to positive vs the absolute change in buoyancy

[rddvet]

He's talking about the shift from negative to positive vs the absolute change in buoyancy

Got it


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[Confuted]

100 cubic feet of air weighs about 8 pounds. It doesn't matter what tank it's in.

Some tanks might be 4 pounds negative when full and 4 pounds negative when empty. Another tank might be 8 pounds negative when full and neutral when empty.

Some tanks might have more weight near the neck, some tanks might have more weight near the bottom.

Some combinations of these characteristics are more favorable for one use case or another - sidemount, backmount, stages, travel, sumps, etc - but the total buoyancy swing - the amount of lead you need to stay down - remains the same between all tanks of equal capacity.