<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Hank,</div><div>maybe Brian is right! Once the trim is adjusted correctly you wouldn't need</div><div>to touch it again would you? Unless you took your manipulators off</div><div>or something major like that.</div><div>You could dive just under the surface & get a diver to wind it, or</div><div>resurface, wind a bit & try it again.</div><div>Alan</div><div><br>On 13/08/2018, at 5:29 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Brian,</div><div>Yes that is a great idea, just put the crank by the arm and use the arm to wind it in and out lol</div><div>Or I can just open a window and reach out. LOL</div><div>Hank</div>
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On Sunday, August 12, 2018, 7:42:27 AM MDT, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="yiv7913094372"><div><div style="font-family:Arial, sans-serif;font-size:10pt;"><font size="2">Hank, </font><div><font size="2"> You could always put a hand crank on it ! that would keep it simple ;-) </font></div><div><font size="2"><br clear="none"></font></div><div><font size="2">Brian</font></div><div><font size="2"><br clear="none"></font></div><div><font size="2"><br clear="none"></font><br clear="none"><span style="font-size:10pt;">--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:</span><br clear="none"><br clear="none"><span style="font-size:10pt;">From: hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br clear="none"><span style="font-size:10pt;">To: Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br clear="none"><span style="font-size:10pt;">Subject: Re: [PSUBS-MAILIST] home made actuator</span><br clear="none"><span style="font-size:10pt;">Date: Sun, 12 Aug 2018 11:51:48 +0000 (UTC)</span><br clear="none"><br clear="none"><div class="yiv7913094372yqt3968471381" id="yiv7913094372yqt95234"><div style="font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Brian,</div><div>I agree the acme thread rod would work well. In fact, that is where I started with the idea. I would need a gear box to up the torque and I am trying to keep it simple to build. If the other two options don't work out, I will be back to the acme rod.</div><div>Hank</div><div><br clear="none"></div>
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On Sunday, August 12, 2018, 5:05:26 AM MDT, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div><div><div><span></span></div><div><div></div><div>Hank,</div><div>that blue robotics motor was 4.5 in lbs torque. (.38 ft lbs) So you would</div><div>probably have to gear it anyway, or buy a motor controller that could</div><div>handle a lot of amps. They sell motor controllers for that motor. The only thing</div><div>that can be a bit problematic with the brushless motor controllers is that </div><div>if they are designed for the hobby market they are normally operated</div><div>via a transmitter & receiver not a potentiometer. There are electronics</div><div>to get round that. </div><div>I just bought a pressure sensor / temperature sensor & underwater switch</div><div>off Blue Robotics. </div><div>I am sure that actuator motor will be DC.</div><div>I will be interested to hear how you get on with it.</div><div>Alan</div><div><div><br clear="none">On 12/08/2018, at 10:33 PM, hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Alan,</div><div>That is a very slick motor alright, but it needs a controller. You know how I try to avoid electronic components whenever possible. Also i am trying to keep the cost down by using parts that I already have. I have a satellite dish actuator and I have a trolling motor on the shelf. I am picking up the actuator today from the shop and bringing it home to tear down. I am quite excited that it might be DC.</div><div>Hank</div><div><br clear="none"></div>
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On Sunday, August 12, 2018, 3:57:07 AM MDT, Alan via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div><div><div></div><div>Hank,</div><div>what about using one of these 350W brushless underwater motors</div><div>from blue robotics!</div><div><a rel="nofollow" shape="rect" target="_blank" href="https://www.bluerobotics.com/store/thrusters/m200-motor-r1/">https://www.bluerobotics.com/store/thrusters/m200-motor-r1/</a></div><div>They sell them as rov motors & for that use I have reservations, as the prop</div><div>could drive sand etc in to the sealed windings & possibly wear through the</div><div>insulation. But for turning a threaded rod that moved your trim weight they</div><div>might be fine. Certainly save a lot of stuffing round modifying a linear</div><div>actuator. I saw these motors on a reasonably expensive rov recently.</div><div>Cheers Alan</div><div><div><br clear="none">On 12/08/2018, at 9:45 AM, hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Alan,</div><div>I just had a look at the one you found, and I did not realize they were DC. I thought they were AC, well that is awesome!</div><div>Thanks"</div><div>Hank</div><div><br clear="none"></div>
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On Saturday, August 11, 2018, 3:40:12 PM MDT, hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div>Alan, </div><div>I think they are probably song enough, I just swap the AC motor out. I don't need 400 lbs to do the job but I need 400 lbs of ballast. I am actually planning to make a moving cradle that also carries the oil filled batteries. I don't know how much force it will require, but, the cradle will be on rollers to make it easy.</div><div>I am ready to test for balance, so I will have to switch over to building a test pool. My plan to put an in ground pool in my new shop is out now because there is a giant lathe in the way.</div><div>Hank</div><div><br clear="none"></div>
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On Saturday, August 11, 2018, 3:34:01 PM MDT, Alan via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div><div><div></div><div>Hank,</div><div>my first thought was satellite dish actuator.</div><div>This one is claiming 500lb capacity.</div><div><a rel="nofollow" shape="rect" target="_blank" href="https://www.ebay.com/itm/Venture-18-Inch-Linear-Actuator-36V-Jack-Arm-with-Saddle-Clamp-Satellite-Dish-/271574942987">https://www.ebay.com/itm/Venture-18-Inch-Linear-Actuator-36V-Jack-Arm-with-Saddle-Clamp-Satellite-Dish-/271574942987</a></div><div>But you wouldn't need that with horizontal travel. Any idea what force it</div><div>takes to pull / push it? I assume it is external.</div><div>Just wondering why you need 400lb! </div><div>Cheers Alan</div><div><br clear="none"></div><div><div><br clear="none">On 12/08/2018, at 8:54 AM, hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>Hi All,</div><div>I am in need of a long stroke electric actuator to move my 400 lb trim weight. Of coarse I want to make one. I am planning to either add a oil filled trolling motor to a trailer jack or mount the trolling motor to a satellite dish actuator. I have not dismantled the satellite dish actuator yet to see if it can handle the job. I think it can but I will see. </div><div>Anyone have another idea?</div><div>Hank</div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"></div></div></div></blockquote></div><blockquote><div><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br clear="none"><span><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br clear="none"></div></blockquote></div></div><div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div></div>
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