<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>Hank,</DIV><DIV> 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. </DIV><DIV> </DIV><DIV>Brian<BR><BR>--- personal_submersibles@psubs.org wrote:<BR><BR>From: hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><BR>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><BR>Subject: Re: [PSUBS-MAILIST] penetration schedule<BR>Date: Thu, 13 Aug 2015 18:23:16 +0000 (UTC)<BR><BR></DIV><DIV style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><DIV><SPAN>Brian,</SPAN></DIV><DIV><SPAN>I would add a few nipples and cap them off, you will want them down the road.</SPAN></DIV><DIV dir="ltr"><SPAN>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. </SPAN></DIV><DIV dir="ltr"><SPAN>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.</SPAN></DIV><DIV dir="ltr"><SPAN>Hank</SPAN></DIV> <BR><DIV><BR><BR></DIV><DIV style="display: block;"> <DIV style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <DIV style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <DIV dir="ltr"> <FONT face="Arial" size="2"> On Thursday, August 13, 2015 11:52 AM, Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<BR> </FONT> </DIV> <BR><BR> <DIV><DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;"><DIV>Hank,</DIV><DIV> Here are all my penetrations:</DIV><DIV> </DIV><DIV>Front hard ballast tank</DIV><DIV> 1. flood valve - 1/2" ss rod thru hull </DIV><DIV> 2. vent valve</DIV><DIV> 3. air inject - ss coupling</DIV><DIV> </DIV><DIV>Main ballast tank (soft)</DIV><DIV> 1. flood valve - ss 1/2" rod thru hull</DIV><DIV> 2. air inject</DIV><DIV> </DIV><DIV>mechanical penetrations:</DIV><DIV> 1. front flaps - ss 1/2" rod thru hull (all)</DIV><DIV> 2. back flaps</DIV><DIV> 3. motor turning ( steering )</DIV><DIV> </DIV><DIV>Breathing Oxygen - 3/4" coupling or smaller ( will bush)</DIV><DIV> </DIV><DIV>Flood Valve - 1 1/2" - ss coupling ( near bottom)</DIV><DIV> </DIV><DIV>main ballast HP air in - </DIV><DIV> #1 - 3/4" ss coupling</DIV><DIV> #2 - 3/4" ( will have bushings to 1/2" or smaller)</DIV><DIV> </DIV><DIV> </DIV><DIV>Gauges</DIV><DIV> 1. Temperature - 1/2" ss coupling</DIV><DIV> 2. Pressure - 1/2"</DIV><DIV> </DIV><DIV>Release buoy </DIV><DIV> 1. 1/2" SS rod thru hull</DIV><DIV> </DIV><DIV>Equalizing valve </DIV><DIV> 1. 3/4" coupling</DIV><DIV> </DIV><DIV>Drop weight</DIV><DIV> 1. 7/8" ss rod thu hull</DIV><DIV> </DIV><DIV>Hatch dog thu hull</DIV><DIV> 1. 7/8" ss rod</DIV><DIV> </DIV><DIV> Is there anything that I obviously forgot ?? All my electrical will be going through a separate viewport fitting.</DIV><DIV> </DIV><DIV>So far I have the front trim, hatch , but no air yet.</DIV><DIV> </DIV><DIV>Not sure if I want to have a small trim tank in the main cabin or not.</DIV><DIV> </DIV><DIV> </DIV><DIV>Brian</DIV><DIV> </DIV><DIV> </DIV><DIV> </DIV><DIV> </DIV><DIV> </DIV><DIV> </DIV></DIV></DIV><BR>_______________________________________________<BR>Personal_Submersibles mailing list<BR><A href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR><A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR><BR><BR></DIV> </DIV> </DIV> </DIV></DIV>_______________________________________________
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