<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div><span>Hi Graham,</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>I'm not quite following the idea, but Hydrospace have made submersibles with</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>inflatable ballast tanks. They used them on their spherical hull subs that open </span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande',
sans-serif; background-color: transparent; font-style: normal;"><span>up like a clam shell. This was to give more freeboard. They did away with them</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>when they changed the entry at the top of the sphere. </span><span style="background-color: transparent;"> </span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>To comply to certification they needed 2 ballast bags on either side. The bags</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal;"><span>are inside an open ended cylinder, so that when they collapse there is limited</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>drag when going through the water. There are a lot of ready made lift bags on the</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>net with over expansion valves in them.</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>Why not make the ballast
tanks out of fiberglass if you are worried about corrosion,</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>or have a large inspection port in the bottom?</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; background-color: transparent; font-style: normal; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;"><span><a href="http://www.seamagine.com/OCEANPEARL2.html">http://www.seamagine.com/OCEANPEARL2.html</a><br></span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>Alan</span></div><div><br></div> <div style="font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14pt;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Graham Bayliss <whitestar456@manx.net><br> <b><span style="font-weight: bold;">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, April 13, 2014 5:30 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Question for the group<br> </font> </div> <div class="y_msg_container"><br>Hi <br><br>Has anyone experimented with a different variable ballast tank I am thinking<br>of making a tube of gas pipe which is made of thick plastic inside I plan to<br>fit a bellows air bag, this will be blown
up by the air line which blows the<br>water out of the steel ballast tank . One end of the tank will be fixed so<br>as to hold the bellows in place the other end of the tank will be drilled<br>with holes to allow the water to escape and the bellows to expand. The<br>pressure will blow the air out of the bellows when the return vale is<br>opened. This method also eliminates the fear of what the inside of the steel<br>ballast tank is doing due to sea water corrosion. Has anyone any views as<br>to why this method will not work.<br><br>The builder of Casper 11<br><br>Graham Bayliss<br><br>-----Original Message-----<br>From: Personal_Submersibles [mailto:<a ymailto="mailto:personal_submersibles-bounces@psubs.org" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br>On Behalf Of Jon Wallace<br>Sent: 11 April 2014 14:49<br>To: Personal Submersibles General Discussion<br>Subject: Re: [PSUBS-MAILIST]
Question for the group<br><br><br>A club designed sub "OSS - Open Source Submarine" was attempted years <br>ago. It had a good start but stalled soon afterward. That kind of <br>project is difficult to complete unless someone with a clear vision and <br>desire to lead the effort takes charge of it. I don't think I have it <br>linked from the main site anymore but the page still exists at <br>www.psubs.org/oss if you want to look at it or revive it.<br><br>Franks saucer sub was taken over by his daughter. Her intent was to <br>finish it and she did write into PSUBS shortly after Frank's death <br>notifying us of that intent, however I have never heard back from them <br>again and don't know what ultimately became of the sub.<br><br><br><br>On 4/10/2014 4:18 AM, James Frankland wrote:<br>> Hi Scott\All<br>> I like the idea of the "club" manipulator.<br>><br>> I think there is scope for several club type projects.
Just off the <br>> top of my head.<br>> Club designed sub plans. Perhaps based on the K250 or Emile's Eurosub <br>> but kept super simple for the first time builder.<br>> Manipulator arm<br>> Re-designed hatch for K boats<br>> Single sideband UW radio<br>> O2 monitor<br>> I always thought it would be nice for someone or group to get hold of <br>> Franks saucer sub and get it finished. im sure he'd have liked to see <br>> it in the water.<br>> Anyway, just thinking aloud,<br>> Kind Regards<br>> James<br>><br><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles"
target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div> </div> </div> </div></body></html>