<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Hank,</div><div>no you just blame it on spell check! It's always correcting my texts to </div><div>how it thinks it should be.</div><div>Alan</div><div><br>On 19/05/2020, at 11:42 PM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div class="ydp3087cf76yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div dir="ltr" data-setdir="false">Alan, Oh man I really need to proof read. I must have been low on O2 </div><div dir="ltr" data-setdir="false">Hank</div><div><br></div>
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On Monday, May 18, 2020, 6:42:47 PM MDT, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="yiv8556807157"><div><div></div><div>Hank,</div><div>I managed to interpret that email & In my calculations I forgot about putting a burst</div><div>of compressed air in to get the water completely out, although I was automatically</div><div>doing that when I was diving.</div><div>A bit of a no brainer now for me to have a free flooding ballast tank. </div><div>Alan</div><div class="yiv8556807157yqt3615918512" id="yiv8556807157yqt64787"><div><br clear="none">On 19/05/2020, at 12:08 PM, hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote type="cite"><div><div class="yiv8556807157ydpabd10534yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div dir="ltr">Alan, I know after laughing Gamma I always gave a boat of air to make sure all was open and good. I could not quantify the amount but know there is not much difference.</div><div dir="ltr">Hank</div><div><br clear="none"></div>
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On Monday, May 18, 2020, 6:00:12 PM MDT, Alan via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div dir="ltr">Just did some experiments & answered my own question.<br clear="none">If you put an upturned glass in a container full of water & push it down till<br clear="none">it is just fully under the surface, the water enters the bottom of the glass to<br clear="none">a level that is 6% of the volume of the glass.<br clear="none">This is less than what I thought. You would only gain 6% more floatation by<br clear="none">going from a free flooding ballast to having a flood valve.<br clear="none">The pros of having a flood valve are the added floatation & added security that <br clear="none">your sub won't sink if the vent valve fails.<br clear="none">The cons are that you would need a much larger valve than the vent valve <br clear="none">& there would be more pressure in the ballast tank when blowing the ballast.<br clear="none">Alan<br clear="none"><br clear="none">> On 18/05/2020, at 7:45 AM, Alan via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none">> <br clear="none">> Has anybody got an idea or guess as to how much water comes in to<br clear="none">> a free flooding ballast tank? Ie. would it fill up to 1/4 of the volume<br clear="none">> of the tank with water? And does this vary much after towing.<br clear="none">> Also if you know the volume of your ballast tank that would be helpful.<br clear="none">> Am considering inlet valves at the bottom of the tanks as I will be towing <br clear="none">> the sub a lot.<br clear="none">> Thanks Alan<br clear="none">> _______________________________________________<br clear="none">> Personal_Submersibles mailing list<br clear="none">> <a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none">> <a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div class="yiv8556807157yqt6416860983" id="yiv8556807157yqtfd39455"><br clear="none"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div></div>
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