<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>Hank, or what about a tank filled with wax ?</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] syntactic foam<BR>Date: Wed, 18 Nov 2015 00:01:51 +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 dir="ltr"><SPAN>I am not sure but I did come across a cut away picture of one and it was filled with some sort of material. It really is amazing what the depth rating is for the cost.</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 Tuesday, November 17, 2015 4:57 PM, Sean T. Stevenson via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<BR></FONT></DIV> <BR><BR> <DIV>Are these floats hollow, or solid / blown closed-cell plastic?<BR><BR>Sean<BR><BR><DIV><BR>On 2015-11-17 16:48, hank pronk via Personal_Submersibles wrote:<BR>> I am not sure I would want to risk an impact with the floats that could<BR>> weaken them and potentially have them fail at depth. I feel it best to<BR>> have them fully protected under a cowl. I suspect your right that they<BR>> are tough enough, but I wouldn't want to chance it. I have seen a<BR>> picture of a DW with about 20 floats tied to the front of the sub. They<BR>> must have had an over weight item mounted temporarily that needed<BR>> compensating. <BR>> Hank<BR>> <BR>> <BR>> <BR>> On Tuesday, November 17, 2015 4:30 PM, Sean T. Stevenson via<BR>> Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR>> <BR>> <BR>> I only just now looked up the trawl floats. I notice that they have a<BR>> depth rating which may match what you need, and you may also be able to<BR>> take advantage of the form factor, instead of viewing it as a<BR>> restriction... If the floats are available as spheres with a through<BR>> hole, what about mounting an array of them down either side of your boat<BR>> on a round bar which is part of the superstructure to serve double-duty<BR>> as hard fenders? Placing them outboard like that would increase your<BR>> surface stability as well.<BR>> <BR>> Sean<BR>> <BR>> <BR>> On 2015-11-17 14:03, hank pronk via Personal_Submersibles wrote:<BR>>> Sean,<BR>>> I have looked at building steel buoyancy tanks- they are just to heavy<BR>>> to be effective. I am trying to keep the sub as light as possible and<BR>>> trawl floats are better than 50% buoyant to weight. Unless there is a<BR>>> serious risk to using trawl floats, I think they are the most logical<BR>>> and cost effective choice at 3 dollars per lb of buoyancy . I will<BR>>> also have substantial MBT volume to offset failed trawl floats. If<BR>>> I am wrong, please correct me, I would love to have steel tanks, that<BR>>> is right up my alley.<BR>>> Hank<BR><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></DIV><BR><BR></DIV> </DIV> </DIV> </DIV></DIV>_______________________________________________
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