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ScubaLawyer
Master Diver
Posts: 1095
Joined: Thu Apr 08, 2010 11:25 am
First Name: Mark
Location: Laguna Beach, CA

Mark's 38s

Sat Jun 24, 2017 11:20 pm

Can't let Eben out-do me too much. Just finished my 1963 Sportsways Twin 38s rebuild project (1880psi). The 1/2" straight thread o-ring sealed valves are cool (as is the 0-ring sealed manifold). The bands and harness came from Alan. A whole host of folks on the board helped me with this project so thank you one and all. Mark
P.S. I understand from reading pasts posts that these tanks are quite heavy in the water. That said, I dive a 5mm full suit with farmer john pants, gloves, booties... here in the ocean. With a steel 71.2 cu ft tank I have perfect no B.C. buoyancy control down to at least 30 feet with a 26 pound belt (I weigh about 230 if anyone cares). So I am soliciting opinions on how much lead I should take off my 26 lb belt when diving these SW twin 38's (42s with 10% overfill) here in the ocean, all other things being equal. Of course I will perform some empirical testing but I'm just looking for a good place to start. Thanks, Mark.
38a.jpg
38e.jpg
38c.jpg
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"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968) :D

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Bryan
Plank Owner
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Joined: Fri Jun 24, 2005 11:40 am
First Name: Bryan
Location: Wesley Chapel Florida
Contact: Website

Re: Mark's 38s

Sun Jun 25, 2017 12:01 pm

Diligence pays off....Well done. Only on VDH would "38's" of this type garner this much attention :wink:
Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB

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ScubaLawyer
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Joined: Thu Apr 08, 2010 11:25 am
First Name: Mark
Location: Laguna Beach, CA

Re: Mark's 38s

Sun Jun 25, 2017 1:50 pm

Thanks Bryan,

I've wanted a set of these puppy's ever since reading the following from "The Golden Guide to Scuba Diving":
p31.jpg
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"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968) :D

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antique diver
Master Diver
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Joined: Sun Dec 10, 2006 12:50 pm
First Name: Bill
Location: North-Central Texas

Re: Mark's 38s

Mon Jun 26, 2017 12:52 pm

Good job, Mark! Those look great. Do you have the Waterlung decals? Somebody had them available at one time... just can't remember who.
"I get plenty of excercise just pushing my luck!"

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ScubaLawyer
Master Diver
Posts: 1095
Joined: Thu Apr 08, 2010 11:25 am
First Name: Mark
Location: Laguna Beach, CA

Re: Mark's 38s

Mon Jun 26, 2017 12:55 pm

antique diver wrote:Good job, Mark! Those look great. Do you have the Waterlung decals? Somebody had them available at one time... just can't remember who.
No, no decals. Almost want to keep them clean looking.
"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968) :D

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SurfLung
Master Diver
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Joined: Sat Jan 01, 2011 2:03 pm
First Name: Eben
Location: Alexandria, MN
Contact: Website

Re: Mark's 38s

Tue Jun 27, 2017 9:08 am

- Way to go Mark. Those are beautiful. Re-Built and good as new. "Experienced Divers use two tank gear..." Yeah Baby!
- Thanks for sharing your project and photos. It has been fun following your progress and now seeing the finished product inspires me to get back to work on my own projects. I wish I could join you in a "Twin 38s Theme Dive" to break them in properly! :)

Buoyancy Notes: I don't know if the Sportsways 1880 psi tanks are especially heavy... They are just heavier than the 1800 psi tanks. With a 3mm suit in fresh water, and 15-20 feet deep I wear only 2 lbs weight with the Sportsways and 12 lbs with the 1800 psi tanks.

I'm with you on the dull gray unmarked color... I don't know why but I prefer it, too.
SurfLung
The Freedom and Simplicity of Vintage Equipment and
Vintage Diving Technique are Why I Got Back Into Diving.

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