PerroneFord
Contributor
Yea, that's what I meant too. Old 72s. Good stuff. 2250 with a "plus" rating. I didn't know there were new ones. Why are the new ones horrible?
Twin 108s, 119s, or 130s for wrecks?
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Gotta agree about the old 72's. I've got 3 along with my 2 pst steel 80's. 2 of them have original dates of 5/66 and 7/66. Both just passed hydro with flying colors and I regularly get good fills in the 3100 to 3300 range. My other one is newer (5/76) and it's going to need hydro soon but I've no worries about it. Got it from a guy who only filled it at a shop that does not do overfills(chickens).It's got a plus rating and for a year its gotten 3000psi fills. These tanks get used alot because they are what I take to the pool as well as on dives. It's not unusual for me to fill these every week when we're busy with classes. And in the pool I only need to carry 4# and that's just more or less to get control of students who get a little carried away. If I messed with al80's I'd need to darn near double that. We don't overweight so sometimes I bring em back down to earth when they take too big a breath and are not paying attention as they're swimming around. Steel is the way to go. I won't dive al if I don't have to. And you can get 72's cheap.
I dive twin 108's and use clasic wing I dive wet in a 7.5 farmer john I fill them to 3500 and they a heavy on the top side but not to bad. I have to agree with what I am hearing if you are a big guy and can handle a little weight then they are grate tanks to grow in to.
PerroneFord
Contributor
Aquahump, can you swim up those 108's if you lose your wing? I'm a pretty fair sized guy with strong legs, but I don't know if I could muscle those bad boys up.
I have 7 sets of the old 72's. I love them. They are relatively light (on the boat) and comfortable. I use them for everything down to about 150 feet or so. I have two sets of LP 95's for the deeper stuff. I've used then (a tiny bit overfilled) on wreck dives passed 300 feet. Never really needed anything larger.
PerroneFord:
Yes I can, I have done it just to see that I could. Now saying that remember I am in a 7.5 farmer john and I only use 9 lbs so the closer I get to topside the less I have to work. Now if I was in a out of air problem and my wings failed and I was not near a team member then I would be in a world of S**T.
California Diver
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the new 72s suck because they are so god damn negative, are short as hell, and make for some serious head heavy diving especailly for a tall guy like myself
Life-Is-Good-Diver
Contributor
I would have to agree with Tom also. It depends on the depth, amount of penetration, and how long you will need at depth, considering your SAC rate, for planned deco, travel gases, and so on.
I have a set of PST 130's , that I used on the Northern light's here in FL, depth's of 180' , and had ALOT of gas left at the end.
On shallow wrecks , like 130' , I use a set of PST 100's, doubled up, and I get over a hour and still come up with 1000 psi left in my doubles, of course having some hang time on the line.
I Sold my PST 130's , simply to much weight, between those doubled up, a 50/50 mix, and a alum 40 for 100% 02, I simply could not carry the weight on 4'+ sea's getting on and off a dive boat, in rolling sea's . For cave's , it's fine, you walk in and out, but I'm
5'9" , 200 lbs, and believe me, those sucker's are heavy. If I was going down like Tom said, below 240' , Then I would need that extra gas, but for 180' with limited penetration, the 130's were over kill.
Be sure to have redundant lift also, I use a OMS Dual bladder wing, carry lift bag's , and dive Dry also, DUI TLS 350. Your not even going to swim up a pair of 100's, let alone anything larger then that.
I have a set of PST 130's , that I used on the Northern light's here in FL, depth's of 180' , and had ALOT of gas left at the end.
On shallow wrecks , like 130' , I use a set of PST 100's, doubled up, and I get over a hour and still come up with 1000 psi left in my doubles, of course having some hang time on the line.
I Sold my PST 130's , simply to much weight, between those doubled up, a 50/50 mix, and a alum 40 for 100% 02, I simply could not carry the weight on 4'+ sea's getting on and off a dive boat, in rolling sea's . For cave's , it's fine, you walk in and out, but I'm
5'9" , 200 lbs, and believe me, those sucker's are heavy. If I was going down like Tom said, below 240' , Then I would need that extra gas, but for 180' with limited penetration, the 130's were over kill.
Be sure to have redundant lift also, I use a OMS Dual bladder wing, carry lift bag's , and dive Dry also, DUI TLS 350. Your not even going to swim up a pair of 100's, let alone anything larger then that.
brianstclair
Contributor
Not much difference between the PST E8-119's and the PST E8-130's, weight-wise, is there? I'm still only diving a single, so I went with the 130's, but for those guys talking about how heavy the 130's are to double up, is it much different from the 119's?
Brian
Brian
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