<div dir="ltr">Hi Alan,<br><div><br></div><div>I don't think there are any microswitches in these. Nor in fact any sealed components at all that I saw.</div><div><br></div><div>Best,</div><div>Alec</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Sep 22, 2020 at 5:24 PM Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div></div><div>Alec & Hank,</div><div>when I was compensating linear actuators ( a long time ago ) mine had</div><div>micro switches in them that stopped the travel.</div><div>I am not sure whether the Lenco has them or not!</div><div>I was sticking a hot needle through the plastic housing of the micro switch to</div><div>help compensate them, as it was pretty well sealed & I feared it would randomly</div><div>be switched because of the oil compensation pressure at depth.</div><div>Also the brushed motors were sealed. This again may be a problem if the </div><div>compensating oil hasn't fully filled the cavities inside the motor housing &</div><div>suddenly experiences pressure as you descend. The small brushed motors</div><div>can have what Phil describes as a "herky jerky" action when oil compensated</div><div>due to the oil lifting the brushes off as they spin fast.</div><div>Mentioning this in case you encounter problems operating them at depth!</div><div>Alan</div><div><br>On 4/09/2020, at 9:59 AM, Alec Smyth via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Hi friends,<div><br></div><div><span style="color:rgb(29,33,41);font-family:Helvetica,Arial,sans-serif;font-size:14px;white-space:pre-wrap">The PSUBS Community Projects page (</span><a href="https://l.facebook.com/l.php?u=http%3A%2F%2Fwww.psubs.org%2Fcommunity%2Fprojects%2F%3Ffbclid%3DIwAR0h2tBfXPDrd1-qg5NcZGBCqXXe-SKQZMxFCDCBBtSNnaZx42iOOmuBdoc&h=AT3eqKa9glmfxaDQHOwwOXbznLIfHpxLe5qW-frl6GayEG2OzsaSaxmS_Lvj8sXs-zLUYglsW2tGlIPlmjmFChFQaJrsRSDyDSjP67nMCWAbJVXw5DZhN8Yvuy2Lo7fTILWUn7Zl_yu7bz745aO0H2hQ8vlO11fvzI6KwLZjoR3NwjUToX81HiSAaM1PZIXKrGrmU052uyrhlWmYSJvAuvs6-p6qLb1DUxTxVjW3bV4I6um6t4a5ug0bACMZ6jRKmjrNrd2v8l_3IpweTripbVuMdD8-Tc2exR8k4WwugJbNH1vY0vmMP-uhazz1sbpYLw9mAmjxHGux3_adPYa01oDxd8JWplw5ucnC9jWUhQI-5XlHQzPGSFeYRl2u5QAGl8p_K2Fllv8DobTp1wUCZ-TrgDFKgeiAscI18UrCE60RnkfHK8al3tGWM4ZnQ-P_vS02FdO4qiC5gReo23KUQ0yrJoUn5iNnF24W07kMUkDpp4JLTdT-WODzylg-xWTxnsScWBnllTV7BkUe3QwkIq_1NHXX9QPl6kmaL8b4QpNb1KtjXN3oLdkiC3JN0B3TAch0mA3yRZaEsJSG07y8j6RemPfbNs0-LHZh5j4EK7Sw_j6CWmJwViWoS5TPftPt0tsz7hg" rel="noopener nofollow" style="color:rgb(56,88,152);text-decoration-line:none;font-family:Helvetica,Arial,sans-serif;font-size:14px;white-space:pre-wrap" target="_blank">http://www.psubs.org/community/projects/</a><span style="color:rgb(29,33,41);font-family:Helvetica,Arial,sans-serif;font-size:14px;white-space:pre-wrap"> ) now features an "open source manipulator" developed by Hank Pronk and me. This is an intentionally simple manipulator built using only a drill press and an angle grinder, except for a few plastic bushings that were turned on a lathe for expedience. We purposely avoided things like aluminum welding, to keep it's fabrication as accessible as possible. The page contains blueprints, photos, and a bill of materials - but I recommend beginning at the "Start Here" document in the ZIP file. Please don't hesitate to reach out if you have any questions, or if you have any suggested improvements.</span><br></div><div><br></div><div>Best,</div><div>Alec</div></div>
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