<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1415381931713_5719"><span id="yui_3_16_0_1_1415381931713_5920">Hi Hank,</span></div><div dir="ltr" id="yui_3_16_0_1_1415381931713_5719"><span id="yui_3_16_0_1_1415381931713_6176">with no first stage regulator, at</span> 400ft there will be 200psi pressure left in the tank.</div><div dir="ltr" id="yui_3_16_0_1_1415381931713_5717"><span id="yui_3_16_0_1_1415381931713_5716">Based on an 80cuft tank, the internal size of a 122 cuft tank would be about .58cuft</span></div><div dir="ltr" id="yui_3_16_0_1_1415381931713_5717"><span id="yui_3_16_0_1_1415381931713_5809">At 200psi you would x that x 13 = 7.54 cuft left in the tank. Subtract this from your</span></div><div dir="ltr" id="yui_3_16_0_1_1415381931713_5717"><span id="yui_3_16_0_1_1415381931713_6032">original 122 = 114.46cuft. then as Alec says divide by 13 = 8.8cuft.</span></div><div dir="ltr" id="yui_3_16_0_1_1415381931713_5717"><span id="yui_3_16_0_1_1415381931713_6113">This will give you 549 lb of lift (249.1kg)</span></div><div dir="ltr" id="yui_3_16_0_1_1415381931713_5717"><span>Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1415381931713_5669"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1415381931713_5668"> <div dir="ltr" id="yui_3_16_0_1_1415381931713_5667"> <hr size="1" id="yui_3_16_0_1_1415381931713_5666"> <font size="2" face="Arial" id="yui_3_16_0_1_1415381931713_5670"> <b><span style="font-weight:bold;">From:</span></b> Alec Smyth via Personal_Submersibles <personal_submersibles@psubs.org><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> Saturday, November 8, 2014 3:25 AM<br> <b id="yui_3_16_0_1_1415381931713_6175"><span style="font-weight: bold;" id="yui_3_16_0_1_1415381931713_6174">Subject:</span></b> Re: [PSUBS-MAILIST] volume calculation<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1415381931713_5795"><br><div id="yiv3371988424"><div id="yui_3_16_0_1_1415381931713_5794"><div dir="ltr" id="yui_3_16_0_1_1415381931713_5797">P1V1 = P2V2<div id="yui_3_16_0_1_1415381931713_5800"><br clear="none"></div><div id="yui_3_16_0_1_1415381931713_5799">1 atm x 122 cf = 13.1 atm x V2</div><div id="yui_3_16_0_1_1415381931713_5798"><br clear="none"></div><div id="yui_3_16_0_1_1415381931713_5796">Therefore V2 = 9.3 cf</div></div><div class="qtdSeparateBR"><br><br></div><div class="yiv3371988424yqt5365067802" id="yiv3371988424yqt09236"><div class="yiv3371988424gmail_extra" id="yui_3_16_0_1_1415381931713_5793"><br clear="none"><div class="yiv3371988424gmail_quote" id="yui_3_16_0_1_1415381931713_5792">On Fri, Nov 7, 2014 at 8:23 AM, hank pronk via Personal_Submersibles <span dir="ltr" id="yui_3_16_0_1_1415381931713_5942"><<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1415381931713_5941">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote class="yiv3371988424gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;" id="yui_3_16_0_1_1415381931713_5791">Hello all,<br clear="none">
I need help with a lift bag calculation. I have a 122 cubic foot hp tank going one one side of Gamma for a lift bag. How many cubic feet of air will I have in the lift bag at 400 feet after emptying the air tank.<br clear="none">
Thank you<br clear="none">
Hank<br clear="none">
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