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Post by nikeajax on Jul 21, 2017 12:37:22 GMT -8
Terry, I don't know if you remember, but quite a while ago someone had tripple-72's--UFF-DA! He had images, and just looking at them made my back hurt JB
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Post by surflung on Jul 21, 2017 12:44:34 GMT -8
- Congratulations on your Twin 72s acquisition. Those steel 72s are highly desirable and especially popular in a Twin Tank configuration. SwimJim has two sets of Twin 72s: One is set up like yours for vintage style diving. The other is set up with an isolation manifold and full tech diver configuration. Versatile. He dives them deep into Fortune pond where a diver needs a lot of air.
- For weight comparison purposes, SwimJim also has a twin set of steel 108s... And my other tech diver friend Eric wears a twin set of 130s... I guess these kinds of rigs are common among cave divers and deep wreck divers. So, the Twin 72s are pretty lightweight compared to THOSE!
- My son found me a similar set to yours in a Craigs list ad for $10. When he spoke with the seller, the guy said his local dive shop told him those tanks were junk. Well, you can pay $700 or more for a new set of steel tanks with modern manifold, bands, and everything. Or you can get a nice deal on vintage Twin Steel 72s. Mine passed the Hydro and VIP and I just put them back together and dove them... MAN that's a lot of air.
- My tanks aren't quite as faded but the paint is chipping off real easy. Mostly on the bottoms. I chipped off a lot so that the inspector could tell if there is any rust problem... And there isn't. They are smooth as a baby's butt under the paint. I put the boots back on to hide where I chipped off the paint. I think I should probably put a coat of Galvalite zinc paint on the bare spots before re-painting the yellow.
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Deleted
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Post by Deleted on Jul 21, 2017 14:54:12 GMT -8
not sure a set of twins is an "improvement"? Well, as John said, doubles do help to get the regulator just that much lower, so there is some advantage. I love my 38s and 50s. But, you have to factor in double the price for hydros and visuals, and then there are always those shops that try to charge you double for filling double tanks. There have been many times on trips where I have to talk to the shop owner and point out that both tanks put together hold less than most singles today, are low pressure, and have a single yoke fitting, so it amounts to no more than a single fill. It's a hassle, but they always come around. Double 72s, though, add even more to the mix. You have to keep current on your insurance, and be willing to be down for the period following the inevitable hernia repair. I just had one done, so I'm a bit sensitive about this issue right now. The only way I can see diving twin 72s is if I can strap them on in the water. But even then I don't have a practical need for that much air for the diving I do. Exactly. I have two sets of 38's that I over fill each time I use them.......making one a set of 45's and the other just under 50 cf......but I use my own compressor I bought from one of our deceased compatriots (he was alive then). Beats spending all that time and effort going to dive shops. Draw back is because I don't need to have a vis or get them tested if I am away from the house and want another dive, no one will fill them.........thus why I have two sets of 72's......and a set of alum. 50's I use for reg. testing.
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Post by duckbill on Jul 22, 2017 21:53:35 GMT -8
Terry, I don't know if you remember, but quite a while ago someone had tripple-72's--UFF-DA! He had images, and just looking at them made my back hurt JB I don't recall that. That's insane! Did they have one of those manifolds that was somewhat "V" shaped instead of straight across?
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Post by nikeajax on Jul 24, 2017 15:39:02 GMT -8
I don't remember, sorry! I just remember three tanks and really big shoulders carrying them JB
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Post by cnotthoff on May 20, 2018 9:24:34 GMT -8
Hey Mark, resurrecting those doubles will be a fun summer project. I'll get back to you here about that gasket.
Since you've removed the manifold, have you had a chance to look inside those tanks? A red epoxy or white teflon interior coating can be a problem. Those liners can hide rust damage. Check that before you proceed.
Good Dives, Charlie
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Post by tomcatpc on May 20, 2018 14:04:15 GMT -8
They are 1969 vintage, and I think they do have the lining? The impression I got from the dive shop I haunt is that if needed, the lining can be tumbled out. I'm going to hope for the best. What I recall seeing inside, from the view of someone who knows very little...the lining looked good.
Anyway, this is the equal to a relative new Diver being like a 16 year getting a 1969 Ford BOSS 429 Mustang for his first car. I don't need these, but looks like it might be fun! Mark
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Post by vance on May 20, 2018 15:34:17 GMT -8
Don't forget to add a hand truck to your dive equipment list. Man, oh man! I've seen Terry struggling to put on those doubles and then staggering down to the beach! It's a young man's game. I have trouble with one 72!
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Post by duckbill on May 20, 2018 15:59:18 GMT -8
Don't forget to add a hand truck to your dive equipment list. Man, oh man! I've seen Terry struggling to put on those doubles and then staggering down to the beach! It's a young man's game. I have trouble with one 72! Yeah, those 50s have changed. I'm not sure how, but they've become a bit unwieldy. They used to flip over my head a la Mike Nelson. I wonder if a dive shop could get that fixed. At least the 38s are still cooperative.
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Post by vance on May 20, 2018 17:07:41 GMT -8
Man, oh man! I've seen Terry struggling to put on those doubles and then staggering down to the beach! It's a young man's game. I have trouble with one 72! Yeah, those 50s have changed. I'm not sure how, but they've become a bit unwieldy. They used to flip over my head a la Mike Nelson. I wonder if a dive shop could get that fixed. At least the 38s are still cooperative. You still have the Mike Nelson elan, Terry. I'm sure you could rock double 80s. I was just saying that us old guys can't keep up.
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Post by SeaRat on May 20, 2018 19:02:13 GMT -8
Man, oh man! I've seen Terry struggling to put on those doubles and then staggering down to the beach! It's a young man's game. I have trouble with one 72! Yeah, those 50s have changed. I'm not sure how, but they've become a bit unwieldy. They used to flip over my head a la Mike Nelson. I wonder if a dive shop could get that fixed. At least the 38s are still cooperative. Lloyd Bridges uses twin "38s" for his out-of-water scenes that were made of balsa wood. . So hoisting twin 50s or 72s is something he did only in the water. John
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Post by Deleted on May 21, 2018 5:57:49 GMT -8
Yeah, those 50s have changed. I'm not sure how, but they've become a bit unwieldy. They used to flip over my head a la Mike Nelson. I wonder if a dive shop could get that fixed. At least the 38s are still cooperative. Lloyd Bridges uses twin "38s" for his out-of-water scenes that were made of balsa wood. . So hoisting twin 50s or 72s is something he did only in the water. John Well, we are all getting older and in my case 69 year old muscles.....but by God I can still hoist my 38's over my head. Trick is in the leverage: ie: where to hold the tanks for best balance as they go over the top. I learned early on by my first dive instructor......Ray Jeton, how to do that. Tom Eskou, SSGT USAF (my instructor to get sanctioned to dive under Provost Marshal law in Okinawa)would throw those twin 72's over his head like they were of balsa. But he was a big fellow that man......a dive shop owner once told me it was impossible to put a tank over ones head with the new modern jacket BC's and got really pissed when I told him I do that routinely when I go diving. NO ONE assists me. I've heard that story about Bridges 38's made of balsa...........not so sure it is a true tale however. I tried that sitting down trick in a small boat with my 38's and it ain't hard to do at all. Easier than using a single 72 due to the length. The single 72 always hits the bulwark of the boat. However, doing it all day to film a scene? Not sure how that would work out. But if one is flippin tanks over ones head all day, I suspect one gets pretty good at it.
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Post by tomcatpc on May 21, 2018 17:24:09 GMT -8
I have no intention of flinging these on over my head, I'll be stoked to get them out of the basement and to my car... Mark
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Post by tomcatpc on Jun 25, 2018 18:14:56 GMT -8
Just took a leap of faith and dropped these off at the dive shop to get hydro'd and VIZ'd. See how how things turn out. Mark
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jviss
Pro Diver
Posts: 209
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Post by jviss on Sept 9, 2018 15:12:05 GMT -8
Curious, how did this work out? I have an old set of 50's with plastic coated outsides and a white inner liner. They are out of hydro and I'm thinking of bringing them in. I'd like to know how the shop reacted to the lining.
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