<font color='black' size='3' face='Arial, Helvetica, sans-serif'><font class="Apple-style-span" size="3">I can't answer, as I have precisely zero experience with pneumo manips. Nuytco did in fact cook one up for the Sea Urchin, which seemed to work okay, but I don't know anything about it. Sorry. That said, if it's cheap and it works (even if it's a pain in the ass) then it's worth having. Subs should be able to DO something, not just cruise around like an oversized camera housing with motors. I'd give serious consideration to the ball and socket arm, which functions adequately down to about 600 feet (according to the boys who have used them). We figure one would cost about $500-600 USD to machine, plus material and welding. A thousand bucks or a little more isn't bad, considering there are exactly three moving parts in the whole thing (as opposed to a hydraulic system which has about 3 moving parts to the running inch).</font>
<div><font class="Apple-style-span" size="3">Vance<br>
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<div style="font-family: helvetica, arial; font-size: 10pt; color: black; ">-----Original Message-----<br>
From: Alan <alanlindsayjames@yahoo.com><br>
To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br>
Sent: Fri, Jan 24, 2014 3:12 pm<br>
Subject: Re: [PSUBS-MAILIST] Manipulators<br>
<br>
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<div>One more question Vance & I'll leave you in peace</div>
<div>for a week.</div>
<div>For a small non commercial submersible operating to 500 ft</div>
<div>that has a very limited use for a manipulator other than it being there </div>
<div>just in case we come across some item of value. Is a pneumatic manipulator a good</div>
<div>option? Air is already there & wouldn't be consumed much because</div>
<div>of the limited use. No noise & expensive space consuming hydraulic system.</div>
<div>And as you say there are options for lifting heavier items.</div>
<div>Thanks,</div>
<div>Alan</div>
<div><br>
Sent from my iPad</div>
<div><br>
On 25/01/2014, at 8:01 am, Joe Perkel <<a href="mailto:josephperkel@yahoo.com">josephperkel@yahoo.com</a>> wrote:<br>
<br>
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<div><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top">I particularly liked the PVC tube with the furled lift bag and air source, now that's got real "get work done" utility.<br>
<br>
It seems to me that a permanently mounted air source terminating just aft of the claw is a natural companion set-up for anyone with a manipulator on a PSUB. <br>
<br>
Joe<a target="_blank" href="http://overview.mail.yahoo.com?.src=iOS"><br>
<br>
Sent from Yahoo Mail for iPad</a></td></tr></tbody></table>
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<b>
<span style="font-weight:bold">From:</span>
</b>
Alan James <<a href="mailto:alanlindsayjames@yahoo.com">alanlindsayjames@yahoo.com</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">Subject:</span>
</b>
Re: [PSUBS-MAILIST] Manipulators <br>
<b>
<span style="font-weight:bold">Sent:</span>
</b>
Fri, Jan 24, 2014 6:09:42 PM <br>
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<div><span>Thanks Vance,</span></div>
<div style="color:rgb(0, 0, 0);font-size:13px;font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;background-color:transparent;font-style:normal;"><span>that's shed some light on the subject.</span></div>
<div style="color:rgb(0, 0, 0);font-size:13px;font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;background-color:transparent;font-style:normal;"><span>Alan</span></div>
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<font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Vance Bradley <<a href="mailto:Vbra676539@AOL.com">Vbra676539@AOL.com</a>><br clear="none"> <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 clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Saturday, January 25, 2014 5:42 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Manipulators<br clear="none"> </font> </div>
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<div>Alan,</div>
<div>I've seen the discussion. The smallest sub I know of with a manipulator on board is the Deepworker. No exfra tanks there. Metacentric vs CG works in all directions. Yes, you get movement and no it's not a problem in my experience. I did operate the bigger subs but also smaller ones, to include Aquarius, briefly in a DW, plus three different K-boats,
so speak with some experience. You put everything you imagine on a
small sub, you get a big sub. In any case, It's probably best to think of a psub as a work in progress. Get the boat done, go play, scratch head, get more work done, go play, scratch head......and so it goes.</div>
<div>Vance</div>
<div><br clear="none">Sent from my iPhone</div>
<div class="yiv5803638844yqt8075494090" id="yiv5803638844yqt53812">
<div><br clear="none">On Jan 24, 2014, at 3:20 AM, Alan James <<a rel="nofollow" shape="rect">alanlindsayjames@yahoo.com</a>> wrote:<br clear="none"><br clear="none"></div>
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<div>Vance,</div>
<div>a couple of people have mentioned lately the problem of the shifting of</div>
<div>balance as you
reach out with a manipulator & have talked about countering it with</div>
<div>trim tanks. Is it a big deal if you go nose down, tail up? Possibly more of a problem working on a </div>
<div>vertical face than picking something up off the bottom. </div>
<div>Some of our subs will be a lot smaller than <span style="font-size:10pt;">the working </span><span style="font-size:10pt;">subs you were in so the problem would be </span></div>
<div style="color:rgb(0, 0, 0);font-size:10pt;font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;background-color:transparent;font-style:normal;"><span style="font-size:10pt;">accentuated in our case.</span></div>
<div style="color:rgb(0, 0, 0);font-size:10pt;font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;background-color:transparent;font-style:normal;"><span style="font-size:10pt;">Can you give us
some of your experience on this thanks & in your opinion is it worth messing</span></div>
<div style="color:rgb(0, 0, 0);font-size:10pt;font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;background-color:transparent;font-style:normal;"><span style="font-size:10pt;">about with the trim while operating the manipulator.</span></div>
<div style="color:rgb(0, 0, 0);font-size:10pt;font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;background-color:transparent;font-style:normal;"><span style="font-size:10pt;background-color:transparent;">Alan</span><br clear="none"></div>
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