<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>I would recommend getting the propeller hand book by Dave Gerr. I bought it when I was trying to select a prop for my submarine. It has every calculation and explanation you could ever want in it. </div>
<div>Thanks,</div>
<div>Scott Waters</div>
<div> </div>
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<DIV id=wmQuoteWrapper>-------- Original Message --------<BR>Subject: [PSUBS-MAILIST] prop size<BR>From: hank pronk <<a href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>><BR>Date: Wed, September 04, 2013 3:58 pm<BR>To: Personal Submersibles General Discussion<BR><<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><BR><BR>
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<DIV style="FONT-SIZE: 16px; FONT-FAMILY: tahoma, new york, times, serif; RIGHT: auto; COLOR: rgb(0,0,0); FONT-STYLE: normal; BACKGROUND-COLOR: transparent">I have a two part question,</DIV>
<DIV style="RIGHT: auto">Is it beneficial to increase my propeller size to increase efficiency. I was under the impression from my boating days that a large slow prop is more fuel efficient. It should increase battery range and slow down the shaft speed, helping the seal.</DIV>
<DIV style="RIGHT: auto">I have a much larger prop left over from boating and I am thinking of using it on Gamma</DIV>
<DIV style="RIGHT: auto">The next question is,,, is there anyone here with the ability to calculate the new rpm for my given prop size and motor hp.</DIV>
<DIV style="RIGHT: auto">Hank<VAR id=yui-ie-cursor></VAR><BR style="RIGHT: auto"></DIV>
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<DIV class=hr contentEditable=false style="FONT-SIZE: 0px; BORDER-TOP: #ccc 1px solid; HEIGHT: 0px; BORDER-RIGHT: #ccc 1px solid; BORDER-BOTTOM: #ccc 1px solid; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 5px 0px; BORDER-LEFT: #ccc 1px solid; LINE-HEIGHT: 0; PADDING-RIGHT: 0px" readonly="true"></DIV><FONT size=2 face=Arial><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Jon Wallace <<a href="mailto:jonw@psubs.org">jonw@psubs.org</a>><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, September 4, 2013 6:18:15 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [PSUBS-MAILIST] There's gold in them-thar waters<BR></FONT></DIV>
<DIV class=y_msg_container><BR><BR><A href="http://www.usatoday.com/story/news/nation/2013/09/03/florida-family-gold/2757357/" target=_blank>http://www.usatoday.com/story/news/nation/2013/09/03/florida-family-gold/2757357/</A><BR>_______________________________________________<BR>Personal_Submersibles mailing list<BR><A href="mailto:Personal_Submersibles@psubs.org" target=_blank ymailto="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>
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