<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Brian,</div><div>an easier & cheaper way would be to use pneumatic cylinders, especially</div><div>if you don't want the expense & space of a hydraulic system.</div><div>Alan</div><div><br>On 25/05/2020, at 6:59 PM, Brian Cox 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:Arial, sans-serif; font-size:10pt;"><font size="2">Alan, I think I would sit on the bottom first and then try to pick something up, that way not be effected by surge so much. Where I am there is not really silt more sand really so I wouldn't be stirring things up by being on the bottom.</font><div><font size="2"><br></font></div><div><font size="2">Brian</font></div><div><font size="2"><br></font></div><div><font size="2"><br></font><br><span style="font-size: 10pt;">--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:</span><br><br><span style="font-size: 10pt;">From: Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br><span style="font-size: 10pt;">To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br><span style="font-size: 10pt;">Subject: Re: [PSUBS-MAILIST] submersible motor</span><br><span style="font-size: 10pt;">Date: Mon, 25 May 2020 18:48:28 +1200</span><br><br><div style="font-size: 10pt;"></div><div style="font-size: 10pt;">Brian,</div><div style="font-size: 10pt;">no they don't. I was thinking of making up my own gear train with plastic or 316</div><div style="font-size: 10pt;">gears. I was going to work backward; make the gripper, then gripper rotation,</div><div style="font-size: 10pt;">then wrist & by that time I will know what weight I have, & how much power or</div><div style="font-size: 10pt;">gearing I need for the next joint.</div><div style="font-size: 10pt;">With your boat you will need a strong manipulator. As a diver you might have</div><div style="font-size: 10pt;">Experienced a wave surge at depth. If you were going to pick something up & a wave surge hit your sub you could have the weight of your sub driving your manipulator in </div><div style="font-size: 10pt;">to rocks.</div><div style="font-size: 10pt;">I know Vance commented that light weight manipulators get broken easily.</div><div style="font-size: 10pt;">Alan</div><div style="font-size: 10pt;"><br></div><div style="font-size: 10pt;"><br>On 25/05/2020, at 5:57 PM, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote style="font-size: 10pt;"><div><div style="font-family:Arial, sans-serif; font-size:10pt;"><font size="2">Alan, How are those blue robotics motors? Do they make gear motors?</font><div><font size="2"><br></font></div><div><font size="2">Brian</font></div><div><font size="2"><br></font></div><div><font size="2"><br></font><br><span style="font-size: 10pt;">--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:</span><br><br><span style="font-size: 10pt;">From: Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br><span style="font-size: 10pt;">To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br><span style="font-size: 10pt;">Subject: Re: [PSUBS-MAILIST] submersible motor</span><br><span style="font-size: 10pt;">Date: Mon, 25 May 2020 17:42:04 +1200</span><br><br><div style="font-size: 10pt;"><span></span></div><div style="font-size: 10pt;"><div></div><div>Hi Brian,</div><div>I am ahead of you on this idea.</div><div>I bought these two car window motors that have been adapted for robotics,</div><div>thinking I could use them on a manipulator arm joint. </div><div>I went off the idea as they would need a waterproof casing & seal on the output</div><div>shaft as well as oil hoses running to them from a compensator ( if you wanted to</div><div>do it well). Also they are a bit weak for using in the first couple of joints.</div><div>I am now liking the idea of a water hydraulic cylinder on the first 2 joints & using</div><div>the blue robotics waterproof motor for the last joint, wrist & jaws.</div><div>Ian Juby who is new to Psubs is an expert in robotics. Listen to him if he chimes in.</div><div>Also the motors would need a motor controller that limited the amp draw or you </div><div>could burn them out if they stalled.</div><div>Alan</div><div><br></div><div><image1.JPG><br></div><div><br></div><div><br></div><div><br>On 25/05/2020, at 3:37 PM, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote><div><div style="font-family:Arial, sans-serif; font-size:10pt;"><font size="2">Hi All,</font><div><font size="2"> Thinking about oil filling this gear motor for a arm I have in mind </font></div><div><font size="2"><br></font></div><div><font size="2"><a href="https://www.alibaba.com/product-detail/90mm-Waterproof-PMDC-12v24v-worm-gear_60771058320.html?spm=a2700.7724857.normalList.40.74ab140ekRVq5Q">https://www.alibaba.com/product-detail/90mm-Waterproof-PMDC-12v24v-worm-gear_60771058320.html?spm=a2700.7724857.normalList.40.74ab140ekRVq5Q</a><br></font></div><div><br></div><div><br></div><div>Brian</div><div><br></div><div><br></div></div>
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