<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div><span>I have to agree with Alec, it is rare to take a sub out without needing touch up paint. I also think a sub should not have a front mbt. The MBT's should be on top and on the sides. The sides is best because of surface stability to enter the sub, unless it is barge or ship launched. Emile nailed it.</span></div><div><span>Hank</span></div><div class="yahoo_quoted" style="display: block;"> <br> <br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> On Saturday, February 15, 2014 10:47:23 PM, Marc de Piolenc
<piolenc@archivale.com> wrote:<br> </font> </div> <div class="y_msg_container">Hmmm. If it were that brittle I would expect trouble in aeronautical <br clear="none">uses. Might be a not-properly-annealed-after-forming problem.<br clear="none"><br clear="none">Besides, how difficult would it be to provide a buffer that doesn't <br clear="none">block too much of the view? That would take care of dock and support <br clear="none">vessel bumps, and it seems to me that reasonably competent handling <br clear="none">should obviate contact with rocks on the bottom?<br clear="none"><br clear="none">Marc<br clear="none"><br clear="none">On 2/16/2014 11:48 AM, Alec Smyth wrote:<br clear="none">> Gents, the only problem about using acrylic for the MBT is that it<br clear="none">> shatters on impact. And there are _always_ impacts against rocks, the<br clear="none">> surface support vessel, docks, trailers, etc. Not that there isn't great<br
clear="none">> value in making things like fairings from acrylic, but personally I'd<br clear="none">> stay from it for the MBTs except as framed windows.<br clear="none">><br clear="none">><br clear="none">> Best,<br clear="none">><br clear="none">> Alec<br clear="none">><br clear="none">><br clear="none">> On Sat, Feb 15, 2014 at 9:17 PM, Marc de Piolenc <<a href="mailto:piolenc@archivale.com" shape="rect" ymailto="mailto:piolenc@archivale.com">piolenc@archivale.com</a><br clear="none">> <mailto:<a href="mailto:piolenc@archivale.com" shape="rect" ymailto="mailto:piolenc@archivale.com">piolenc@archivale.com</a>>> wrote:<br clear="none">><br clear="none">> Yowza! That is extremely valuable information. If you should happen<br clear="none">> to find it, would you post it where the rest of us can get our mitts<br clear="none">> on it?<br clear="none">><br
clear="none">> Best,<br clear="none">> Marc<br clear="none">><br clear="none">><br clear="none">> On 2/16/2014 9:50 AM, Michael Holt wrote:<br clear="none">><br clear="none">> On 2/15/2014 8:41 PM, Joe Perkel wrote:<br clear="none">><br clear="none">> Marc,<br clear="none">><br clear="none">> Those canopies of course, are made by industry with<br clear="none">> industrial capital<br clear="none">> and support. I was thinking more of a homegrown method.<br clear="none">><br clear="none">> Is it then possible to heat a flat sheet in a conventional<br clear="none">> oven to x<br
clear="none">> degrees for x time, then form over a plug or mould, that<br clear="none">> kind of thing.<br clear="none">><br clear="none">> The Markham submarine had instructions for blowing a bubble<br clear="none">> canopy. I<br clear="none">> don't have a digital copy of those pages of the instructions.<br clear="none">> Someone<br clear="none">> else might have it ... I think someone sent me a copy a few<br clear="none">> years ago,<br clear="none">> but I can't find that right now.<br clear="none">><br clear="none">><br clear="none">> M<br clear="none">><br clear="none">>
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