A good diver friend told me carry stories about O2, that is why I still have an O2 bottle with the regulator right on the tank. I have a second tank for back up. I want to move the supply outside for more volume, but have been to nervouse about doing it wrong.Hank
On Friday, August 14, 2015 8:16 AM, James Frankland via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
Hi Brian, jamesf at guernseysubmarine.com Also, I agree with Alec. He pointed me to that book some years ago and after reading it, I have a great deal of respect for high pressure O2. RegardsJames
On 14 August 2015 at 14:47, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
James, What is your email address?
Brian
--- personal_submersibles at psubs.org wrote:
From: James Frankland via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] penetration schedule
Date: Fri, 14 Aug 2015 13:36:21 +0100
Brian,
The K boats have a 1.25" bronze fitting that passes through a SS through hull. You can remove it for cleaning. Contact me off list and I can send you a dwg.
RegardsJames
On 14 August 2015 at 04:58, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
Hank, Can I put a bronze bushing in a ss coupling, if that is necessary for the O2? Does the O2 need to not go through stainless? I had a bad experience connecting stainless nipples into a stainless 90, it galled so bad that I ruined the nipple getting it out of there. Maybe I just need to use more Teflon tape. brian
--- personal_submersibles at psubs.org wrote:
From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] penetration schedule
Date: Thu, 13 Aug 2015 20:46:45 -0700
Hank, It seems to me that it's easier to weld in couplings rather than nipples, I suppose it's just preference. I sort of have a trim tank already with my forward hard ballast tank, I'm just not sure at this point whether or not that will be enough control. A way to deal with varying loads is probably something I need to address, but I don't want to give up valuable cabin space for it. Brian
--- personal_submersibles at psubs.org wrote:
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] penetration schedule
Date: Thu, 13 Aug 2015 18:23:16 +0000 (UTC)
Brian,I would add a few nipples and cap them off, you will want them down the road.A trim tank may be a good idea for such a heavy sub, unless you have real powerful vertical thrusters. I find when I take a passenger, even my daughter Roman who is light as a feather, I am always quite over weight. That is no problem at all in a Gamma size sub because the vertical thrusters have enough jam to stop the sub hitting bottom. A trim tank would be good to keep you closer to ideal weight, or have lots of small weights to take out. I foolishly made two rather heavy lead weights. Are you running your O2 through a ss nipple, is that okay, I am planning to do that for external O2. I remember talk about the K subs needing a Bronze fitting or something like that.Hank
On Thursday, August 13, 2015 11:52 AM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
Hank, Here are all my penetrations: Front hard ballast tank 1. flood valve - 1/2" ss rod thru hull 2. vent valve 3. air inject - ss coupling Main ballast tank (soft) 1. flood valve - ss 1/2" rod thru hull 2. air inject mechanical penetrations: 1. front flaps - ss 1/2" rod thru hull (all) 2. back flaps 3. motor turning ( steering ) Breathing Oxygen - 3/4" coupling or smaller ( will bush) Flood Valve - 1 1/2" - ss coupling ( near bottom) main ballast HP air in - #1 - 3/4" ss coupling #2 - 3/4" ( will have bushings to 1/2" or smaller) Gauges 1. Temperature - 1/2" ss coupling 2. Pressure - 1/2" Release buoy 1. 1/2" SS rod thru hull Equalizing valve 1. 3/4" coupling Drop weight 1. 7/8" ss rod thu hull Hatch dog thu hull 1. 7/8" ss rod Is there anything that I obviously forgot ?? All my electrical will be going through a separate viewport fitting. So far I have the front trim, hatch , but no air yet. Not sure if I want to have a small trim tank in the main cabin or not. Brian
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