<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1497872649031_5091"><span>Hi Emile,</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1497872649031_5071"><span>I have 30 trawl floats on Elementary now, the problem is they do not have the safety margin. The floats are inside the MBT. </span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1497872649031_5071"><span>Hank</span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Monday, June 19, 2017 5:42 AM, emile via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv1955173842"><style>#yiv1955173842 #yiv1955173842 --
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#yiv1955173842 </style><div><div class="yiv1955173842WordSection1"><div class="yiv1955173842MsoNormal"><span lang="EN-US" style="font-size:11.0pt;">Hi Hank, all</span></div><div class="yiv1955173842MsoNormal"><span lang="EN-US" style="font-size:11.0pt;"> </span></div><div class="yiv1955173842MsoNormal"><span lang="EN-US" style="font-size:11.0pt;">No foam but a spherical trawlerfloat can be a alternative float.</span></div><div class="yiv1955173842MsoNormal"><span lang="EN-US" style="font-size:11.0pt;">Not expensive and some can go to 1000 m /3000 ft. !</span></div><div class="yiv1955173842MsoNormal"><span lang="EN-US" style="font-size:11.0pt;"> </span></div><div class="yiv1955173842MsoNormal"><span lang="EN-US" style="font-size:11.0pt;">Br, Emile</span></div><div class="yiv1955173842MsoNormal"><span lang="EN-US" style="font-size:11.0pt;"> </span></div><div class="yiv1955173842yqt3777865147" id="yiv1955173842yqt43102"><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm;"><div class="yiv1955173842MsoNormal"><b><span style="font-size:10.0pt;">Van:</span></b><span style="font-size:10.0pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>Namens </b>hank pronk via Personal_Submersibles<br clear="none"><b>Verzonden:</b> maandag 19 juni 2017 2:19<br clear="none"><b>Aan:</b> Personal Submersibles General Discussion<br clear="none"><b>Onderwerp:</b> [PSUBS-MAILIST] alternative syntactic foam</span></div></div></div><div class="yiv1955173842MsoNormal"> </div><div><div id="yiv1955173842yui_3_16_0_ym19_1_1497830829254_2526"><div class="yiv1955173842MsoNormal" style="background:white;"><span style="font-size:8.0pt;">Hi All,</span></div></div><div id="yiv1955173842yui_3_16_0_ym19_1_1497830829254_2526"><div class="yiv1955173842MsoNormal" style="background:white;"><span style="font-size:8.0pt;">Just been thinking about low cost ways to make foam. I am sure at the end of the day, I will make my foam the standard way, but it is still an interesting subject to explore. I have learned that microspheres are added to many things, even concrete. That got me thinking, if the compressive strength is there, the best product to reinforce the spheres should be the lightest possible material. Polypropylene is very light and has a compressive strength of 6,000 psi. The fun part about Polypropylene is, it can be recycled from bottle lids etc. I don't think it would take to much imagination to build an oven with a mixer inside and a microsphere injection port. Polypropylene has a specific gravity in the neighbourhood of .7g\cc that means a light weight foam can be made with microspheres and no macro spheres. I don't know about the water absorption properties yet.</span></div></div><div id="yiv1955173842yui_3_16_0_ym19_1_1497830829254_2526"><div class="yiv1955173842MsoNormal" style="background:white;"><span style="font-size:8.0pt;">Hank</span></div></div></div></div></div></div></div><div class="yqt3777865147" id="yqt35521">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></div></body></html>