<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>Actually was is pretty lousy , just slightly buoyant in water. learned about wax solenoids however! </DIV><DIV> </DIV><DIV>Hank, How much buoyancy do you need?</DIV><DIV> </DIV><DIV>Brian Cox <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 03:43:23 +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 dir="ltr"><SPAN>I did look at gasoline and diesel but there is not a big </SPAN>difference in density, so it takes a lot of gas to create the buoyancy I need.</DIV><DIV dir="ltr">I never thought of wax, what is the density? boy that would be great if it has a low density.</DIV><DIV dir="ltr">Hank</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 7:12 PM, Private via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<BR></FONT></DIV> <BR><BR> <DIV>They are hollow, but very thick-walled. I've been using them for years on Snoopy and they've worked out so well, the new sub uses way more of them.<BR><BR>Best,<BR><BR>Alec<BR><BR><BR><BR>> On Nov 17, 2015, at 6:56 PM, Sean T. Stevenson via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR>> <BR>> Are these floats hollow, or solid / blown closed-cell plastic?<BR>> <BR>> Sean<BR>> <BR>> <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><DIV><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>_______________________________________________
Personal_Submersibles mailing list
<A href="/eonapps/ft/wm/page/compose?send_to=Personal_Submersibles%40psubs.org">Personal_Submersibles@psubs.org</A>
<A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A>
</DIV>