<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:8pt"><div><span>Where do you keep the fuel ?</span></div><div><span></span> </div><div><span>Pete</span></div><div><br></div> <div style="font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 8pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" class="hr" contentEditable="false" readonly="true"></div> <font size="2" face="Arial"> <b><span style="font-weight: bold;">From:</span></b> Joe Perkel <josephperkel@yahoo.com><br> <b><span style="font-weight: bold;">To:</span></b> Psubbers Mailist
<personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, October 12, 2013 7:17 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [PSUBS-MAILIST] Thrusters, Air & Diesel Musings<br> </font> </div> <div class="y_msg_container"><br><div id="yiv1393084931"><div><div style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 12pt; background-color: rgb(255, 255, 255);"><div>Some quick questions / observations / musing come to mind as I sit here editing <var id="yiv1393084931yui-ie-cursor"></var>videos.</div>
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<div>It looks to me like Alvin's thrusters all have a 90 deg drive arrangement like yacht bow thrusters. Some of these off the <span id="yiv1393084931misspell-0">shelf</span> units are hydraulic, but way over powered for a Delta / Gamma sized sub. <span id="yiv1393084931misspell-1"><span>There</span></span> are however, lots of little hydraulic motors out there, a slew of them. Ive also seen drive components, reductions, etc, that simply were not available to George. How much trouble would it be to go hydraulic all around? </div>
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<div>If DC motors must be used, in my view then the single must have improvement to the T-Rex design is the addition of a mag coupling.</div>
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<div><span id="yiv1393084931misspell-2">Alecs</span> <span id="yiv1393084931misspell-3"><span>experience</span></span> has me rethinking self sufficiency. It would be nice to charge the batteries and the HP tanks independent of a surface boat, eliminating the need to raft alongside in swells. All this <span id="yiv1393084931misspell-4"><span>convenience</span></span> means a "Tours 66" type of arrangement. But Tours 66 weighed in at 10 tons.</div>
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<div>Everything is now downsized like that little AC unit I posted,.. take a look at this marine gen-set (note dimensions) <a href="http://www.nextgenerationpower.com/Info/Support/3-5Specs.pdf" rel="nofollow" target="_blank">http://www.nextgenerationpower.com/Info/Support/3-5Specs.pdf</a> </div>
<div><span id="yiv1393084931misspell-5">Hmm</span>, could this not be enclosed in the hull during a build, or otherwise slung longways down the hatch into a 42" hull? No prop shaft and seals, (you still get towed) but <span id="yiv1393084931misspell-6"><span>independent</span></span> re-<span id="yiv1393084931misspell-7"><span>charge</span></span> capability for both batteries and HP air with an equally downsized compressor!?! </div>
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<div>So the question of the day is,...</div>
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<div>Is a comfy air conditioned & self sufficient research capable PSUB for sport diving in Florida / <span id="yiv1393084931misspell-9"><span>Caribbean</span></span> waters, a realistic goal at around 3.5 tons and $8-$10 lb?</div>
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