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<DIV>Scott, what size HP tanks are you using, 80,s?</DIV>
<DIV> </DIV>
<DIV>Rick</DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=swaters@waters-ks.com
href="mailto:swaters@waters-ks.com">swaters</A> </DIV>
<DIV><B>Sent:</B> Monday, October 28, 2013 5:29 AM</DIV>
<DIV><B>To:</B> <A title=personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org">Personal Submersibles General
Discussion</A> </DIV>
<DIV><B>Subject:</B> Re: [PSUBS-MAILIST] Exterior HP tanks and
weights</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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style="FONT-SIZE: small; FONT-FAMILY: 'Calibri'; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; TEXT-DECORATION: none; DISPLAY: inline">
<DIV>My first time in the water was discovering the weight needed. Once I knew
that then I attached it to the landing skids and the drop weights. I also have a
storeage compartment in the sub that allows up to about 200lbs, but that is
mostly reserved for salt water trade off ballast from freash water. I calculated
the scuba tanks moving to the out side to move a negative 84 lbs interior to
close to neutral when moved to the outside so I need to ad another 84 lbs to
compensate. Most of the passenger trim for me is done with the VBT.</DIV>
<DIV>Thanks,</DIV>
<DIV>Scott Waters</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>
<DIV style="FONT-SIZE: 75%; COLOR: #575757">Sent from my U.S. Cellular©
Smartphone</DIV></DIV><BR>jimtoddpsub@aol.com wrote:<BR><FONT color=black size=2
face=arial>
<DIV><FONT size=3>Scott,</FONT></DIV>
<DIV><FONT size=3 face="Arial, Helvetica, sans-serif"></FONT> </DIV>
<DIV><FONT size=3>I'm locating the HP's on the exterior for several reasons, but
of course anytime you move something to the exterior you increase the
displacement and therefore the amount of weight required to submerge the
vessel.</FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3 face="Arial, Helvetica, sans-serif">Adding or subtracting
exterior weights is fine prior to launch, but a real pain once you're in the
water.<FONT face="Arial, Helvetica, sans-serif"> It's not always easy to
add interior weights either when the sub is in the water. I still have to
come up with a way to conveniently stow and secure up to 250 lb of lead inside
to compensate for different size pilots/passengers or diving with no
passenger.</FONT></FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>"Sub Design: A Study in Trade-Offs"</FONT></DIV>
<DIV><FONT size=3 face="Arial, Helvetica, sans-serif"><FONT
face="Arial, Helvetica, sans-serif"></FONT></FONT> </DIV>
<DIV><FONT size=3 face="Arial, Helvetica, sans-serif"><FONT
face="Arial, Helvetica, sans-serif">Jim </FONT></FONT></DIV>
<DIV></DIV>
<DIV
style="FONT-SIZE: 10pt; FONT-FAMILY: arial,helvetica; COLOR: black">-----Original
Message-----<BR>From: swaters <swaters@waters-ks.com><BR>To: Personal
Submersibles General Discussion <personal_submersibles@psubs.org><BR>Sent:
Mon, Oct 28, 2013 8:47 am<BR>Subject: Re: [PSUBS-MAILIST] Group Help
Request<BR><BR>
<DIV id=AOLMsgPart_2_3e18dbb9-55f5-4020-a8f6-8ddce0672006>
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<DIV>Hatch closure from both sides deffenetly a good one. I would say adjustable
exterior weights. I hate the idea on chucking weights on the floor and then
sitting on them. I am torn between that and moving the hp air tanks to the
exterior to allow alot more room on the inside.</DIV>
<DIV>Thanks,</DIV>
<DIV>Scott Waters</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>
<DIV style="FONT-SIZE: 75%; COLOR: rgb(87,87,87)">Sent from my U.S. Cellular©
Smartphone</DIV></DIV><BR>hank pronk <<A
href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</A>>
wrote:<BR>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: tahoma, new york, times, serif; COLOR: rgb(0,0,0); BACKGROUND-COLOR: rgb(255,255,255)">
<DIV style="RIGHT: auto"><SPAN style="RIGHT: auto">Joe,</SPAN></DIV>
<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"><SPAN
style="RIGHT: auto">Why don't you take a vote on what the best improvement would
be for a k sub or alike. My vote would be for a hatch closure from both
sides.</SPAN></DIV>
<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"><SPAN
style="RIGHT: auto">Hank<VAR id=yui-ie-cursor></VAR></SPAN></DIV>
<DIV> </DIV>
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style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">
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readonly="true"></DIV><FONT size=2 face=Arial><B><SPAN
style="FONT-WEIGHT: bold">From:</SPAN></B> Joe Perkel <<A
href="mailto:josephperkel@yahoo.com">josephperkel@yahoo.com</A>><BR><B><SPAN
style="FONT-WEIGHT: bold">To:</SPAN></B> "<A
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>"
<<A
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>>
<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, October 28, 2013
5:41:42 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re:
[PSUBS-MAILIST] Group Help Request<BR></FONT></DIV>
<DIV class=y_msg_container><WBR>
<DIV id=yiv709035560>
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<TD vAlign=top>I just love the world in which we live! Look what I found
while waiting to take my daughter to school,.. <A
href="http://www.quickparts.com/QuickQuote.aspx"
target=_blank>http://www.quickparts.com/QuickQuote.aspx</A><BR><BR>Isn't
that just the coolest thing! The Star Trek synthesizer in the real
world.<BR><BR>Joe<BR><BR>Sent from Yahoo! Mail for
iPad</TD></TR></TBODY></TABLE>
<DIV id=yiv709035560_origMsg_>
<DIV><WBR>
<DIV>
<DIV style="FONT-SIZE: 0.9em">
<DIV class=hr
style="FONT-SIZE: 0px; BORDER-TOP: rgb(204,204,204) 1px solid; HEIGHT: 0px; BORDER-RIGHT: rgb(204,204,204) 1px solid; BORDER-BOTTOM: rgb(204,204,204) 1px solid; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 5px 0px; BORDER-LEFT: rgb(204,204,204) 1px solid; LINE-HEIGHT: 0; PADDING-RIGHT: 0px"
readonly="true"></DIV><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN> </B>Marc
de Piolenc <<A
href="mailto:piolenc@archivale.com">piolenc@archivale.com</A>>; <WBR><B><SPAN
style="FONT-WEIGHT: bold">To:</SPAN> </B><<A
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>>;
<WBR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN> </B>Re: [PSUBS-MAILIST]
Group Help Request <WBR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN> </B>Mon,
Oct 28, 2013 10:46:58 AM <WBR></DIV><WBR>
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<TD vAlign=top>Never thought much about doing it at small scale.<BR
clear=none><BR clear=none>I suppose I would set up something like a wood
lathe or a potter's wheel <BR clear=none>and work in some very soft
material like low-density foam. Once I had <BR clear=none>the shape that I
wanted, I suppose one could pour a mold around the <BR clear=none>master,
melt or dissolve out the pattern and cast the final part in some <BR
clear=none>suitable plastic, or even in aluminum if you were ambitious.<BR
clear=none><BR clear=none>3D printing seems like the ultimate way to do
it, though - the accuracy <BR clear=none>available is already better than
what we would need, and if the inital <BR clear=none>results are not
perfect, making changes and printing out another <BR clear=none>prototype
is very quick.<BR clear=none><BR clear=none>Marc<BR clear=none><BR
clear=none>On 10/28/2013 6:13 PM, Joe Perkel wrote:<BR clear=none>> How
can a home builder maintain that contour 360 Deg out of "X" material?<BR
clear=none>><BR clear=none>> Joe<BR clear=none>><BR
clear=none>> Sent from my overpriced<BR clear=none>> iPhone<BR
clear=none>><BR clear=none>> On Oct 28, 2013, at 2:57 AM, Marc de
Piolenc <<A shape=rect rel=nofollow>piolenc@archivale.com</A>>
wrote:<BR clear=none>><BR clear=none>>> Quick clarification: a
properly contoured Kort nozzle, MARRIED TO A MATCHING PROPELLER, will
increase static and low-speed thrust. Of course it won't increase power,
since that comes from your motor. If you just put a shroud around your
existing prop, you will be disappointed, and a shroud that doesn't do the
job is overpriced unless it's free! Key ingredients for success:<BR
clear=none>>><BR clear=none>>> Prop matched to the shroud<BR
clear=none>>> Shroud matched to the speed and thrust requirement of
the vehicle<BR clear=none>>> Motor matched to the resulting prop<BR
clear=none>>><BR clear=none>>> Marc<BR clear=none>>><BR
clear=none>>> On 10/28/2013 8:33 AM, Jon Wallace wrote:<BR
clear=none>>>><BR clear=none>>>> What is the cost of
having a true Kort nozzle machined by a CNC? I think<BR
clear=none>>>> a 30% improvement in thrust for $30 would be great
but I suspect<BR clear=none>>>> machining a Kort is going to
equate to many hundreds of dollars, if not<BR clear=none>>>>
reaching beyond a thousand. When I look at the Snoopy underwater
videos<BR clear=none>>>> it is difficult to imagine a kort nozzle
really making any difference in<BR clear=none>>>> the operational
experience given that the motors are operating very<BR
clear=none>>>> slowly and pushing Snoopy around at about 2 knots
(estimated). The<BR clear=none>>>> props are designed for
power, but that's what we want underwater. True,<BR
clear=none>>>> a kort nozzle would increase that power but what
is the return on the<BR clear=none>>>> cost? In other
words, on a road with a speed limit of 30mph and no<BR
clear=none>>>> passing zones it doesn't matter whether you have a
1.6 liter or 5.4<BR clear=none>>>> liter engine under the hood
does it?<BR clear=none>>> --<BR clear=none>>> Archivale
catalog: <A href="http://www.archivale.com/catalog" shape=rect
rel=nofollow target=_blank>http://www.archivale.com/catalog</A><BR
clear=none>>> Polymath weblog: <A
href="http://www.archivale.com/weblog" shape=rect rel=nofollow
target=_blank>http://www.archivale.com/weblog</A><BR clear=none>>>
Translations (ProZ profile): <A href="http://www.proz.com/profile/639380"
shape=rect rel=nofollow
target=_blank>http://www.proz.com/profile/639380</A><BR
clear=none>>> Translations (BeWords profile): <A
href="http://www.bewords.com/Marc-dePiolenc" shape=rect rel=nofollow
target=_blank>http://www.bewords.com/Marc-dePiolenc</A><BR
clear=none>>> Ducted fans: <A href="http://massflow.archivale.com/"
shape=rect rel=nofollow
target=_blank>http://massflow.archivale.com/</A><BR clear=none>>>
_______________________________________________<BR clear=none>>>
Personal_Submersibles mailing list<BR clear=none>>> <A shape=rect
rel=nofollow>Personal_Submersibles@psubs.org</A><BR clear=none>>> <A
href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles"
shape=rect rel=nofollow
target=_blank>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR
clear=none>><BR clear=none>>
_______________________________________________<BR clear=none>>
Personal_Submersibles mailing list<BR clear=none>> <A shape=rect
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<DIV id=yiv709035560yqtfd64389
class=yiv709035560yqt3416511094><WBR>><WBR><WBR>-- <WBR>Archivale
catalog: <A href="http://www.archivale.com/catalog" shape=rect
rel=nofollow
target=_blank>http://www.archivale.com/catalog</A><WBR>Polymath weblog: <A
href="http://www.archivale.com/weblog" shape=rect rel=nofollow
target=_blank>http://www.archivale.com/weblog</A><WBR>Translations (ProZ
profile): <A href="http://www.proz.com/profile/639380" shape=rect
rel=nofollow
target=_blank>http://www.proz.com/profile/639380</A><WBR>Translations
(BeWords profile): <A href="http://www.bewords.com/Marc-dePiolenc"
shape=rect rel=nofollow
target=_blank>http://www.bewords.com/Marc-dePiolenc</A><WBR>Ducted fans:
<A href="http://massflow.archivale.com/" shape=rect rel=nofollow
target=_blank>http://massflow.archivale.com/</A><WBR>_______________________________________________<WBR>Personal_Submersibles
mailing list<WBR><A shape=rect
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target=_blank>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><WBR></DIV></TD></TR></TBODY></TABLE></DIV></DIV></DIV></DIV><WBR>_______________________________________________<WBR>Personal_Submersibles
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