Sherwood for oxygen reg?

divepig2

Greetings!
I've read posts where others are using Sherwood regs for O2. Are you using them KISS style (non depth compensated)? If so how do you make this mod on a Sherwood? I have one that I'd like to use rather than buying an Apeks. Any advice? I know very little about reg internals.

Thanks!
Harrison

cstmwrks

Hey!! I know this guy!! He is famous in ways none of you know just yet.
I'll leak a few details later......... Ooooooh the stuff this guy has been up too.
Bill

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Why you ask... well it's not like I have anything better to do.

DanFountain

Anybody diving a stock Mk 15 / 15.5 is using a Sherwood O2 (and diluent) reg. See thread http://www.rebreatherworld.com/home-...1st-stage.html for one idea for making these regs non-compensating. These regs are dirt-simple, and can even use the stock Sherwood 300 bar DIN adapter.

That said, I'm assuming you are talking about the more recent Sherwood first stages with the "dry bleed" system for keeping water out of the ambient pressure side of the first stage. These would seem at first glance to be an easy conversion - just replace the relief port (the one the tiny stream of bubbles comes out of) with a plug. However, there is also a tiny orifice between the high pressure side and the ambient pressure side which would have to be blocked also. So, the dry-bleed first stages are probably more trouble than they're worth.

Bill, tell us more! You've got my interest piqued...

Dan

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divepig2

Yes, I did mean the more recent dry bleed regs (I had read the old post). I have a few that I hoped would be usable but it looks like it's time for an Apeks, unless someone out there has an old Sherwood for sale!
Thanks for the advice. I'm just getting back into building/modifying after a long sabbatical (Bill can tell you how long, MontyG could too!). I'll keep searching.

Harrison

nicka

Ive converted one without any problems running 100% o2 for a year now. But the downside is I cant adjust I.P without disassembly . Its a very easy conversion , no special tools or machinary needed. Heres how... Seal the piston bleed up , by dabing a small droplet of epoxy on the intermediate press side of the piston. Assembled the reg and gave it some normal hp air for a minute or two, the epoxy fills the orifice ,never to bleed again , then disasemble it ,give it another dab on both sides and let cure . Then seal up the ambient port however you choose ,and its done. Give it an o2 clean and its good to go. Warning ...only fools and idiots would attempt this modification , as no sane person would actually mess with this stuff let alone dive with it ...right???

divepig2

Thanks! Maybe I'll try it this weekend (I've been called worse than a fool or idiot). I assume this was a fairly new version? The one I'm going to use is a late eighties Brut.

cstmwrks

H,
This may be a top 50 worthless helping hints from Bill, but I recall a guy I knew in Alaska had a sherwood with the dry bleed. A ceramic filter was in line and to kill the bleed hole you just rolled the ceramic filter around in some 02 compatable lube and that was the end of that. Granted this was now 10 years ago so this info may be outdated.. ok.. worthless.

__________________
Why you ask... well it's not like I have anything better to do.

cstmwrks

Well for starters Harrison has spent some 15 years as a search and recovery diver. I've only partly assisted in one drowning recovery but H has had to pull more dead kids and adults from there watery grave than most any of us would care to deal with.

He is also a graphic artist of some fame in the diving world. Yes.. Let me tell you a little story. Any of you folks remember seeing a bit of line art on the net that showed a guy with a MK 15 taking a pee on a set of doubles?
I was the guy who brought it to the internet market only to find that that simple little decal was a polarizing item to folks who did not have much better to do than snivel that they found it offensive. Anyhow it was the talented hand of Harrison that made that line art. And to this day I see it on the net as icons, logos and avatars. Those who use it have H to thank for it. Feel free to send him cool rebreather parts and gear as just compensation.

There is of course much more but that will have to do.

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Why you ask... well it's not like I have anything better to do.

divepig2

Thanks for that info! I'll probably try that first as it seems reversible (except for the dry bleed).
You spilled some of the beans about me Bill! That little cartoon caused a bit of a stir in the States but the rest of the world seemed to like it. Over the years I've redone it with a Drager shell and an Inspo box.
Since you let it out, I had to upload my avatar (the Pig part comes from always having to dive in the muddy water-what with the dive rescue stuff and all). Can't really be a designer without one for long. Coincidentally I found a cartoon of you on the Arctic Lung today, remember that (from '01)? I'll have to get it to you.
Thanks for showin' the love!
This year I'm retiring from the rescue business so I'll have much more time for building and diving. I'd like to get to know some of you guys. Drop me a line!!

Harrison