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<div dir="ltr" data-setdir="false">Good Update David. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Best</div><div><br></div>
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On Wednesday, August 2, 2023 at 09:14:23 PM CDT, David Colombo via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="ydpdc2b5842yiv8111869095"><div><div dir="ltr"><div>Hi Guys, I've been following this thread on air compensation with great interest. So today I reached out to my Minn Kota contact to inquire about the new brushless 120# thrusters and if lower units could be purchased. The new units will not be available to the public most likely till March of next year and no parts will be available for at least the first 6 months after, as all warranty work and repairs will be going back to the factory to qc this product. The projected cost on the lower unit is expected to be in the $800 to $1000 range, (fully outfitted bow unit, around $3600). Not too bad as my cost for my 101 lower units was right around $575 , six years ago. Here is the bad news. The only unit being released is the Bow mount unit which requires all of the hummingbird technology to operate, with the built in speed controller, foot control and the BMS system, all of which is proprietary. From what I understand there is no way to run the brushless motor without the technology, so essentially useless as a sub motor and not able to be disabled and not able to be rebuilt. The other bad news is the 101 series is also being discontinued in favor of new bluetooth technology and the reliance entirely on a closed loop proprietary software system being sold as what fishermen really want and need to be able to fish. Even the built in transducer in the lower unit will only work with Hummingbird, or will work with say Garmin but only a very limited basic sidescan and none of the 3d scanning , panoptics , etc. The new brushless unit at 24v = 96# thrust, and the 36v=115# thrust. Not actually much better than the 101's. Good thing I currently have six of them in my shop. Once I get my test pool assembled for the VAST, after I complete the outfitting, I will test my 36v 101's with an air compensation system, all I need are the extra regulator and op valves. <br clear="none"></div><div><br clear="none"></div><div><br clear="none"></div><div><div><div><div dir="ltr" class="ydpdc2b5842yiv8111869095gmail_signature"><div dir="ltr"><div>Best Regards,<br clear="none">David Colombo<br clear="none"><img src="http://static.squarespace.com/static/533310a9e4b0fba62008a464/t/5339c1f2e4b041bac4e25d1b/1396294132055/?format=500w" style="width: 200px; max-width: 500px;"><br clear="none">804 College Ave<br clear="none">Santa Rosa, CA. 95404<br clear="none">(707) 536-1424<br clear="none"><a shape="rect" href="http://www.SeaQuestor.com" target="_blank" rel="noreferrer noopener">www.SeaQuestor.com</a><br clear="none"><br clear="none"></div></div></div></div><br clear="none"></div></div></div><br clear="none"><div class="ydpdc2b5842yiv8111869095gmail_quote"><div dir="ltr" class="ydpdc2b5842yiv8111869095gmail_attr">On Wed, Aug 2, 2023 at 6:23 PM Cliff Redus via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;" class="ydpdc2b5842yiv8111869095gmail_quote"><div>After a successful Inner-space Science Expedition at Beaver Island this year I know it feels good to recover Shackleton and be on the way home.<div><br clear="none"></div><div>Cliff<br clear="none"><br clear="none"><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br clear="none"><blockquote type="cite">On Aug 2, 2023, at 7:21 PM, Alec Smyth via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></blockquote></div><blockquote type="cite"><div dir="ltr">Guess where this finds me? We picked up Shackleton from Bernie’s a couple of hours ago and are homeward bound. Bernie as always super helpful. <br clear="none"><br clear="none"><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br clear="none"><blockquote type="cite">On Aug 2, 2023, at 7:36 PM, Cliff Redus via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></blockquote></div><blockquote type="cite"><div dir="ltr"><div style="font-family:times new roman, new york, times, serif;font-size:16px;"><div style="font-family:times new roman, new york, times, serif;font-size:16px;"></div>
<div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><div><p>Alec, I setup a spreadsheet to analyze the following setup.</p>
<p> A scuba tank has a 1st stage regulator attached. A Tescom 44-4069 pressure reducing regulator
with venting is attached and tubing is connected from the HP port to a set of
Minn-Kota 101 motors. The question is
can the small orifice in the HP port pass sufficient air to handle the demand
for air in thrusters to keep the pressure a fixed differential pressure above
ambient water pressure.</p>
<p>The calculation indicates this arrangement will work. If anyone wants a copy of the spreadsheet,
please email me your email address and I will send.</p>
<p>The calculation indicates the HP port could be used for
this.<span> </span>Having said that, yes, this a
simple clean setup but so is connecting to a spare LP port.<span> </span>The advantage of the LP port is that pressure
rating of the regulator body can be less so less 316 stainless and less cost.<span> </span>Would be good to spec a regulator like the
Tescom 44-4069 regulator with its venting capacity but for pressures one would expect from the LP port.</p>
<p>Cliff</p>
<p>PS: Hope you got your Land Rover back from the shop.</p></div><br clear="none"></div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><br clear="none"></div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><br clear="none"></div><div style="font-family:times new roman, new york, times, serif;font-size:16px;"><br clear="none"></div>
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On Tuesday, August 1, 2023 at 04:09:41 PM CDT, Alec Smyth via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="ydpdc2b5842yiv8111869095m_3697988988331323234ydpec3037d4yiv1946738507"><div><div dir="ltr"><font face="arial, sans-serif">Hi Cliff,</font><div><font face="arial, sans-serif"><br clear="none"></font></div><div><font face="arial, sans-serif">"<span style="color:rgb(38,40,42);">The Tescom 44-4069 regulator would be a clean installation with just a single 1/4 SS tubing run from the HP port of the 1st stage regulator to the input port of Tescom 44-4069 regulator."</span></font><div><font face="arial, sans-serif"><br clear="none"></font></div><div><font face="arial, sans-serif">There's a little problem with this plan, though easy to work around. <span style="color:rgb(38,40,42);">The HP ports on regulators have a tiny orifice, in order to prevent rapid loss of air if a hose or SPG fails. These ports cannot provide the sort of flow you would want. </span></font><div><span style="color:rgb(38,40,42);"><font style="background-color:inherit;" face="arial, sans-serif"><br clear="none"></font></span></div><div><span style="color:rgb(38,40,42);"><font style="background-color:inherit;" face="arial, sans-serif">Best,</font></span></div><div><span style="color:rgb(38,40,42);"><font style="background-color:inherit;" face="arial, sans-serif">Alec</font></span></div></div></div></div><br clear="none"><div><div id="ydpdc2b5842yiv8111869095m_3697988988331323234ydpec3037d4yiv1946738507yqt46571"><div dir="ltr">On Tue, Aug 1, 2023 at 12:17 PM Cliff Redus via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;"><div><div style="font-family:new times, serif;font-size:16px;"><div style="font-size:16px;font-family:new times, serif;"></div>
<div dir="ltr">Sean, the specs do look good on this unit. To me the issue is going to be the cost. As background, the Parker regulator that Hugh, Alec and I have used for this application is the <span style="font-size:16px;font-family:new times, serif;"><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;">364-02BSS/M1 Parker Watts Pneumatic Regulator.</span></span><div style="font-size:16px;font-family:new times, serif;"><div><br clear="none"></div><div dir="ltr"><a shape="rect" href="https://store.livhaven.com/r364-02bss-m1-watts-fluidair-pneumatic-regulator" target="_blank" rel="noreferrer noopener">https://store.livhaven.com/r364-02bss-m1-watts-fluidair-pneumatic-regulator</a> at $217.51. I purchased mine off ebay for a fraction of this.<br clear="none"></div></div><div dir="ltr" style="font-size:16px;font-family:new times, serif;"><br clear="none"></div><div dir="ltr">When I had the Parker <span style="font-size:16px;font-family:Helvetica, Arial, sans-serif;color:rgb(38,40,42);">364-02BSS/M1 </span>installed for pressure compensating for my four MK 101s, it was connected to the LP port from my AquaLung Titan balanced diaphragm first stage regulator. I had the <span><span style="color:rgb(0,0,0);font-family:new times, serif;font-size:16px;">Parker </span><font style="background-color:inherit;" face="Helvetica Neue, Helvetica, Arial, sans-serif" color="#26282a">364-02BSS/M1 adjusted to give about 2 psi over ambient.</font></span> I had the first stage set to 50 psi over ambient water pressure. I use this for BIBBS and blowing the MBTs. </div><div dir="ltr"><br clear="none"></div><div dir="ltr">The <span><font style="background-color:inherit;" face="Helvetica Neue, Helvetica, Arial, sans-serif" color="#26282a">Tescom 44-4069 regulator would run directly off the HP air tank pressure then output go directly to thrusters. It would be interesting to compare the Cv's for both regulators to get a feel on how much air flow rate they can provide to the thrusters descending and venting when ascending. </font></span></div><div dir="ltr"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;"><br clear="none"></span></span></div><div dir="ltr"><span><font style="background-color:inherit;" face="Helvetica Neue, Helvetica, Arial, sans-serif" color="#26282a">The Tescom 44-4069 regulator would be a clean installation with just a single 1/4 SS tubing run from the HP port of the 1st stage regulator to the input port of Tescom 44-4069 regulator. From the output port of the Tescom 44-4069 a single 1/4 SS tubing to a Swagelok Tee that branched off to two more "T"s to give four 1/4 SS tubing runs to the thrusters.</font><br clear="none"></span></div><div dir="ltr"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;font-size:16px;"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;font-size:16px;"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;font-size:16px;"><br clear="none"></span></span></span></span></span></span></span></span></div><div dir="ltr"><span><font style="background-color:inherit;" face="Helvetica Neue, Helvetica, Arial, sans-serif" color="#26282a">We need to get a RFQ on one of these regulators. Do you have a preferred supplier?</font></span></div><div dir="ltr"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;"><br clear="none"></span></span></div><div dir="ltr"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;">Cliff</span></span></div><div dir="ltr"><span><span style="color:rgb(38,40,42);font-family:Helvetica, Arial, sans-serif;"><br clear="none"></span></span></div></div><div style="font-size:16px;font-family:new times, serif;"><br clear="none"></div>
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On Monday, July 31, 2023 at 09:47:29 PM CDT, Sean T. Stevenson via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="ydpdc2b5842yiv8111869095m_3697988988331323234ydpec3037d4yiv1946738507m_415620457726932623ydp81ec12b4yiv4171593328"><div dir="ltr">I would be inclined to use a Tescom 44-4069 regulator for this purpose. Not sure what these sell for.<br clear="none"><br clear="none">Sean</div><div dir="ltr"><br clear="none"></div><div dir="ltr"><br clear="none"><br clear="none">-------- Original Message --------<br clear="none">On Jul. 31, 2023, 20:37, Cliff Redus via Personal_Submersibles < <a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:<blockquote><br clear="none"></blockquote></div><div id="ydpdc2b5842yiv8111869095m_3697988988331323234ydpec3037d4yiv1946738507m_415620457726932623ydp81ec12b4yiv4171593328yqt09435"><div>My original air competition for the R300 used the regulator that Hugh Fulton has on QSub. These are pricey new but you can get them used on eBay. I was operating all four of my Minn kotas 101 off this single regulator. It was a special ss pressure reducing/pressure releasing regulator. I had it installed on my last Florida dive which I went down about 100 ft . Unit worked fine. My first failure was on Flathead lake expedition in which one of my aft thrusters flooded. After that I switched to oil compensation. Alec is using same regular on his articulated arm and not the thrusters. He felt issue with the regulator was that the port for releasing pressure on ascent was too small. I believe he has addressed this by adding a pressure release valve or OP valve. He can elaborate more on his current strategy.<div><br clear="none"></div><div>Cliff<br clear="none"><br clear="none"><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br clear="none"><blockquote type="cite">On Jul 31, 2023, at 9:14 PM, Alan James via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></blockquote></div><blockquote type="cite"><div dir="ltr">John,<div>I am happy with both air & oil. </div><div>Am intending to fill my thrusters with oil, but have the oil pressurized off my air comp system. This will reduce air use to just whats in the lines.</div><div>My electric manipulator will be air compensated off the same unit. Putting oil in it adds another layer of complexity.</div><div>I think I need to put out a long video once I've finished this</div><div>air compensator.</div><div>From what I am hearing from Cliff, he didn't get enough air delivery from the single regulator he was using. However I thought this was the same unit that Alec is using & was now happy with.</div><div>Alan</div><div><br clear="none"><br clear="none"><div id="ydpdc2b5842yiv8111869095m_3697988988331323234ydpec3037d4yiv1946738507m_415620457726932623ydp81ec12b4yiv4171593328ymail_android_signature"><a shape="rect" id="ydpdc2b5842yiv8111869095m_3697988988331323234ydpec3037d4yiv1946738507m_415620457726932623ydp81ec12b4yiv4171593328ymail_android_signature_link" href="https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_" target="_blank" rel="noreferrer noopener">Sent from Yahoo Mail on Android</a></div> <br clear="none"> <blockquote style="margin:0px 0px 20px;"> <div style="font-family:Roboto, sans-serif;color:rgb(109,0,246);"> <div>On Tue, 1 Aug 2023 at 1:29 pm, Jon Wallace via Personal_Submersibles</div><div><<a shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank" rel="noreferrer noopener">personal_submersibles@psubs.org</a>> wrote:</div> </div> <div style="padding:10px 0px 0px 20px;margin:10px 0px 0px;border-left:1px solid rgb(109,0,246);"> _______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="noreferrer noopener">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer noopener">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div id="ydpdc2b5842yiv8111869095yqtfd39743" class="ydpdc2b5842yiv8111869095yqt3492129334"><br clear="none"> </div></div><div id="ydpdc2b5842yiv8111869095yqtfd76551" class="ydpdc2b5842yiv8111869095yqt3492129334"> </div></blockquote></div><div id="ydpdc2b5842yiv8111869095yqtfd65184" class="ydpdc2b5842yiv8111869095yqt3492129334"><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="noreferrer noopener">Personal_Submersibles@psubs.org</a></span><br clear="none"><span><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer noopener">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br clear="none"></div></div></blockquote></div></div></div></div><div id="ydpdc2b5842yiv8111869095yqtfd10754" class="ydpdc2b5842yiv8111869095yqt3492129334"><div id="ydpdc2b5842yiv8111869095m_3697988988331323234ydpec3037d4yiv1946738507m_415620457726932623ydp81ec12b4yqt25870">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="noreferrer noopener">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer noopener">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div></div><div id="ydpdc2b5842yiv8111869095yqtfd89166" class="ydpdc2b5842yiv8111869095yqt3492129334">
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