<div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1417577569363_2632"><span id="yui_3_16_0_1_1417577569363_2631">Brian,</span></div><div dir="ltr" id="yui_3_16_0_1_1417577569363_2632"><span id="yui_3_16_0_1_1417577569363_2634">I am not an expert but in case no one else says anything,</span></div><div dir="ltr" id="yui_3_16_0_1_1417577569363_2632"><span>I have heard you get a better seal with a softer o-ring at shallower depths.</span></div><div dir="ltr" id="yui_3_16_0_1_1417577569363_2632"><span>So the 70 might be better for you. The Deep Worker is going down to 2000ft.</span></div><div dir="ltr" id="yui_3_16_0_1_1417577569363_2632"><span>Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1417577569363_2638"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1417577569363_2637"> <div dir="ltr" id="yui_3_16_0_1_1417577569363_2636"> <hr size="1" id="yui_3_16_0_1_1417577569363_2635"> <font size="2" face="Arial" id="yui_3_16_0_1_1417577569363_2639"> <b><span style="font-weight:bold;">From:</span></b> Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, December 3, 2014 4:05 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Gamma hatch<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1417577569363_2640"><br><div id="yiv3321665007"><div id="yui_3_16_0_1_1417577569363_2643"><div style="font-family:Arial, sans-serif;font-size:10pt;" id="yui_3_16_0_1_1417577569363_2642"><div id="yui_3_16_0_1_1417577569363_2641">Alan,</div><div> The outfit that I go through were out of the 80 durometer ( 19" in dia), but they had the 70.</div><div> </div><div>Brian<br clear="none"><br clear="none">--- personal_submersibles@psubs.org wrote:<br clear="none"><br clear="none">From: Alan James via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br clear="none">Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none">Date: Wed, 3 Dec 2014 01:19:46 +0000 (UTC)<br clear="none"><br clear="none"></div><div class="qtdSeparateBR"><br><br></div><div class="yiv3321665007yqt7447872302" id="yiv3321665007yqt24458"><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;background-color:rgb(255, 255, 255);"><div dir="ltr"><span>Brian,</span></div><div dir="ltr"><span>the "Deep Worker" uses 80 duromer.</span></div><div dir="ltr"><span>Here is the Parker o-ring selector pdf link.</span></div><div dir="ltr"><span><a rel="nofollow" shape="rect" target="_blank" href="http://www.parker.com/literature/ORD%205700%20Parker_O-Ring_Handbook.pdf">www.parker.com/literature/ORD%205700%20Parker_O-Ring_Handbook.pdf</a><br clear="none"></span></div><div dir="ltr">Alan</div><br clear="none"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Wednesday, December 3, 2014 10:47 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> </font> </div> <div><br clear="none">Does anyone know if a durometer of 70 would suffice for a hatch o ring?<br clear="none"><br clear="none">Brian <br clear="none"><br clear="none">--- <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:<br clear="none"><br clear="none">From: hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">To: Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none">Date: Mon, 1 Dec 2014 13:18:17 -0800<br clear="none"><br clear="none">Brian,<br clear="none">I know that piece is pricy, yikes, that is why I use 516-70 then laminate 1/16 ss to that. I am to cheap to buy the ss ring. :-) Yes the ss tube is for my cue ball arm.<br clear="none">Hank<br clear="none">--------------------------------------------<br clear="none">On Mon, 12/1/14, Brian Cox via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> To: "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Monday, December 1, 2014, 2:23 PM<br clear="none"> <br clear="none"> The stainless seems to do all kinds<br clear="none"> of crazy stuff when welded, Hopefully there's enough meat on<br clear="none"> there to deal with any warp-age, clamping or tacking to a<br clear="none"> flat piece of plate may also be an option. I'll have<br clear="none"> to take it to a shop that has a big enough lathe to handle<br clear="none"> it, I've already talked to them about it. That ring was<br clear="none"> quite costly !<br clear="none"> <br clear="none"> Brian<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> --- <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> wrote:-<br clear="none"> <br clear="none"> From: hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> To: Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> Date: Mon, 1 Dec 2014 05:04:04 -0800<br clear="none"> <br clear="none"> Brian,<br clear="none"> I have to agree about feeling better with the ring in the<br clear="none"> middle. At the same time, I feel better if the CT is<br clear="none"> also in the middle and the hatch dome is in the<br clear="none"> middle. This way all the force from the hatch is in a<br clear="none"> strait line down to the hull. When I welded my<br clear="none"> K350 ring (not ss) it warped just under 1/8in. I<br clear="none"> have to assume the designer allowed for that and started<br clear="none"> with a heavier ring than required. I never use a ss<br clear="none"> ring, so can't say how it will react. I would assume<br clear="none"> it will warp at least 1/8 inch maybe more. Your<br clear="none"> starting with 1/2 inch material, what will you end up<br clear="none"> with? Will it be enough? I would consider making<br clear="none"> a steel ring, then bolt the ss ring to it. I am<br clear="none"> assuming the ss ring is simply for corrosion<br clear="none"> resistance. I would run that idea by an engineer of<br clear="none"> coarse. <br clear="none"> Maybe your welders have a technique to reduce warp age.<br clear="none"> Do you have a lathe big enough to machine this?<br clear="none"> Hank <br clear="none"> --------------------------------------------<br clear="none"> On Sun, 11/30/14, Brian Cox via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> To: "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Sunday, November 30, 2014, 11:32 PM<br clear="none"> <br clear="none"> Hank,<br clear="none"> I'm sort of leaning back<br clear="none"> towards putting everything in the middle again. For<br clear="none"> some reason the wider the hatch ring the better it makes<br clear="none"> me<br clear="none"> feel, not sure why that is, maybe just more surface area<br clear="none"> to<br clear="none"> be in contact. Theoretically if your two mating pieces<br clear="none"> are perfectly flat you wouldn't even need an o ring ! <br clear="none"> Also, my welder wants me to put it in the middle.<br clear="none"> <br clear="none"> Brian<br clear="none"> <br clear="none"> --- <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> wrote:<br clear="none"> <br clear="none"> From: hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> To: Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> Date: Sun, 30 Nov 2014 17:51:28 -0800<br clear="none"> <br clear="none"> <br clear="none"> Brian,<br clear="none"> If the hatch dome ends in the center it would. Did you<br clear="none"> notice how narrow the land is on Gamma, it is like 3/4<br clear="none"> inch. The hatch ring is the same, I was surprised to<br clear="none"> see that.<br clear="none"> Hank--------------------------------------------<br clear="none"> On Sun, 11/30/14, Brian Cox via Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> To: "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Sunday, November 30, 2014, 6:09 PM<br clear="none"> <br clear="none"> Seems like if you had the welds in<br clear="none"> the center the pressure would be distributed evenly<br clear="none"> across<br clear="none"> the 1 1/2" land and hatch ring.<br clear="none"> <br clear="none"> Brian<br clear="none"> <br clear="none"> --- <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> wrote:<br clear="none"> <br clear="none"> From: hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> To: Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> Date: Sun, 30 Nov 2014 10:55:45 -0800<br clear="none"> <br clear="none"> <br clear="none"> And that point is generally at the outer edge of the<br clear="none"> land.<br clear="none"> Hank--------------------------------------------<br clear="none"> On Sun, 11/30/14, hank pronk via<br clear="none"> Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> To: "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Sunday, November 30, 2014, 1:54 PM<br clear="none"> <br clear="none"> You would think the weld<br clear="none"> point should be directly below the weld point where<br clear="none"> the<br clear="none"> hatch dome meets the ring. This would transfer the<br clear="none"> load<br clear="none"> straight down.<br clear="none"> Hank<br clear="none"> --------------------------------------------<br clear="none"> On Sun, 11/30/14, Brian Cox via<br clear="none"> Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Gamma hatch<br clear="none"> To:<br clear="none"> "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Sunday, November 30, 2014, 1:51<br clear="none"> PM<br clear="none"> <br clear="none"> Good information Alec,<br clear="none"> thanks ! <br clear="none"> I'll have it turned<br clear="none"> afterward of course but no need to take<br clear="none"> off<br clear="none"> more metal than necessary.<br clear="none"> <br clear="none"> Brian <br clear="none"> <br clear="none"> ---<br clear="none"> <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> wrote:<br clear="none"> <br clear="none"> <br clear="none"> From: Private via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> To: Personal Submersibles General Discussion<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> Date: Sun, 30 Nov 2014 13:30:18 -0500<br clear="none"> <br clear="none"> Careful! If you weld a ring<br clear="none"> on the way you describe with the<br clear="none"> weld in<br clear="none"> the middle, the weld shrinkage on either side of the<br clear="none"> head wall can bend the SS, leaving you with a<br clear="none"> curved SS<br clear="none"> ring. I can tell you from painful<br clear="none"> experience the amount of<br clear="none"> deflection can be<br clear="none"> amazing, we're not talking a few<br clear="none"> <br clear="none"> hundredths... In my case it was about a quarter<br clear="none"> inch.<br clear="none"> I'd<br clear="none"> recommend cutting the head so it<br clear="none"> meets the ring at the<br clear="none"> outside corner.<br clear="none"> <br clear="none"> Best,<br clear="none"> <br clear="none"> Alec<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> > On Nov 30, 2014, at<br clear="none"> 11:36 AM, Brian Cox via<br clear="none"> <br clear="none"> Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> > <br clear="none"> <br clear="none"> > Hank,<br clear="none"> > I think I'm<br clear="none"> going to have a shop<br clear="none"> down the road turn<br clear="none"> that elliptical head so that the edge<br clear="none"> comes<br clear="none"> right in the middle of the bottom of the ring, still<br clear="none"> need to talk to the welder to see what kind of<br clear="none"> edge he<br clear="none"> wants. With the hatch I'm<br clear="none"> thinking of welding a large<br clear="none"> pipe segment on<br clear="none"> there because there's nothing to grab onto<br clear="none"> for the lathe.<br clear="none"> > <br clear="none"> > Brian <br clear="none"> > <br clear="none"> > --- <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> wrote:<br clear="none"> > <br clear="none"> <br clear="none"> > From: hank pronk via Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> > To: Personal Submersibles General<br clear="none"> Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> > Subject: Re: [PSUBS-MAILIST] Gamma<br clear="none"> hatch<br clear="none"> > Date: Sun, 30 Nov 2014 07:57:38<br clear="none"> -0800<br clear="none"> > <br clear="none"> > Brian,<br clear="none"> > I will look forward to a picture of your<br clear="none"> CT and<br clear="none"> hatch. In particular I would like<br clear="none"> to see how you<br clear="none"> transition from the<br clear="none"> elliptical portion to the 1 1/2in wide<br clear="none"> <br clear="none"> ring.<br clear="none"> > Hank<br clear="none"> ><br clear="none"> --------------------------------------------<br clear="none"> > On Sun, 11/30/14, Brian Cox via<br clear="none"> Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> > <br clear="none"> <br clear="none"> > Subject: Re: [PSUBS-MAILIST] Gamma hatch<br clear="none"> > To: "Personal Submersibles General<br clear="none"> Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> > Received: Sunday, November 30, 2014,<br clear="none"> 10:44 AM<br clear="none"> > <br clear="none"> > Hi<br clear="none"> Hank,<br clear="none"> > I bought two<br clear="none"> > stainless rings 1/2" thick by 1<br clear="none"> 1/2" wide (18" id).<br clear="none"> Which<br clear="none"> > will be welded on to the conning tower<br clear="none"> and the hatch,<br clear="none"> then a<br clear="none"> ><br clear="none"> o ring groove put in the hatch side. With the<br clear="none"> drop I<br clear="none"> > was able to get<br clear="none"> 6 - 6" disks which I'm going to<br clear="none"> <br clear="none"> make<br clear="none"> > into electrical inserts that will<br clear="none"> go into two of my<br clear="none"> > viewports. <br clear="none"> > Conning tower getting welded today (<br clear="none"> 8<br clear="none"> viewports) and<br clear="none"> > also<br clear="none"> working on the other viewports on the sphere, got<br clear="none"> two<br clear="none"> > welder friends that<br clear="none"> I have working on them, both 30+<br clear="none"> years<br clear="none"> > of commercial welding experience !<br clear="none"> > <br clear="none"> > Brian <br clear="none"> > <br clear="none"> > --- <a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> > wrote:<br clear="none"> > <br clear="none"> > From: hank pronk via<br clear="none"> Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> > To: Personal Submersibles General<br clear="none"> Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> > Subject: Re: [PSUBS-MAILIST] Gamma<br clear="none"> hatch<br clear="none"> > Date: Sun, 30 Nov 2014 05:39:19<br clear="none"> -0800<br clear="none"> > <br clear="none"> > Brian,<br clear="none"> > What did you do for the hatch seat on the<br clear="none"> conning<br clear="none"> > tower. Is it stainless or<br clear="none"> did you do like Gamma<br clear="none"> has, a<br clear="none"> > layer of stainless welded on. <br clear="none"> > Hank <br clear="none"> ><br clear="none"> --------------------------------------------<br clear="none"> > On Sat, 11/29/14, Brian Cox via<br clear="none"> Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> > wrote:<br clear="none"> > <br clear="none"> > Subject: [PSUBS-MAILIST] Gamma hatch<br clear="none"> > To: "PSubs" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> > Received: Saturday, November 29, 2014,<br clear="none"> 8:30 PM<br clear="none"> > <br clear="none"> > <br clear="none"> Hank, <br clear="none"> <br clear="none"> <br clear="none"> > Do you know how big the shaft is that goes<br clear="none"> through the top<br clear="none"> > of<br clear="none"> your hatch? Have you every had to<br clear="none"> <br clear="none"> disassemble it<br clear="none"> > ? My hatch is<br clear="none"> pretty much identical to<br clear="none"> Gamma's,<br clear="none"> > I'm in the process of cutting in a<br clear="none"> little<br clear="none"> viewport in<br clear="none"> > <br clear="none"> and also that rotating hatch closure shaft /<br clear="none"> thru hull<br clear="none"> > <br clear="none"> deal. Seems like at least a 3/4"<br clear="none"> <br clear="none"> shaft<br clear="none"> > would be in<br clear="none"> <br clear="none"> > order. Brian<br clear="none"> > <br clear="none"> <br clear="none"> > -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> > <br clear="none"> > <br clear="none"> _______________________________________________<br clear="none"> > Personal_Submersibles mailing list<br clear="none"> > <a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> > <a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> ><br clear="none"> <br clear="none"> > <br clear="none"> ><br clear="none"> _______________________________________________<br clear="none"> > Personal_Submersibles mailing list<br clear="none"> > <a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" 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