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<div dir="ltr" data-setdir="false">Hank, when you do your yearly maintenance on these motors, do you also replace the lip seals and shaft bushing, and do you inspect brushes for wear, or do you just drain and refill without tearing them down?</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Cliff</div><div><br></div>
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On Tuesday, July 25, 2023 at 07:55:11 PM CDT, hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div dir="ltr">Alec, </div><div dir="ltr">I am working on a magnetic coupler end cap this winter. I have had very good luck with WD-40 and have two 55 lb motors still running after more than 20 years. The only difference is, I use much smaller motors. My oil goes black right away and I do get a very small amount of water by season end. I drain the dirty oil and replace. </div><div dir="ltr"><br clear="none"></div><div dir="ltr">The first thing to do is to strip down a motor and plug the shaft hole and do a pressure test on the housing. No point in working on a seal or magnetic coupler if the housing fails early.</div><div dir="ltr">Hank</div><div><br clear="none"></div>
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On Tuesday, July 25, 2023, 06:19:24 PM MDT, Alec Smyth via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="ydp459fb5b9yiv6262787966"><div><div dir="ltr">Here's my inspiration. I've seen several original Kittredge subs still kicking with their original 1-atm, ceramic seal thrusters that are probably 40 years old. Their use is occasional, for sure, but they're maintenance has probably been zero. What I'd like to explore is doing what the Captain did, except with a Minnkota. If the bushings and brushes are dry and in 1 atmosphere, with the normal lubrication (a little grease on the bushings,) then I don't see why they can't have the same life as when they go fishing. <br clear="none"></div><br clear="none"><div class="ydp459fb5b9yiv6262787966gmail_quote"><div id="ydp459fb5b9yiv6262787966yqtfd95858" class="ydp459fb5b9yiv6262787966yqt9221827537"><div dir="ltr" class="ydp459fb5b9yiv6262787966gmail_attr">On Tue, Jul 25, 2023 at 7:53 PM Alan James via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">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="ydp459fb5b9yiv6262787966gmail_quote">Thanks for the credit Alec, I think it was Brian Hughes idea<div>from a previous discussion. Glad we are making some progress.</div><div>As far as the oil / air debate is concerned, I believe Carsten said that you only need a few drops of sea water into an air compensated thruster to wreck it, whereas if there is oil in there the water doesn't do the same damage.</div><div>Your compensator can be used as an air over oil system.</div><div>You could even run 2 thrusters off the same compensator as a test. One with oil, one just air.</div><div>Alan</div><div><br clear="none"><div id="ydp459fb5b9yiv6262787966m_903627900964823121ymail_android_signature"><a shape="rect" id="ydp459fb5b9yiv6262787966m_903627900964823121ymail_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_" rel="nofollow" target="_blank">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 Wed, 26 Jul 2023 at 11:19 am, Alec Smyth via Personal_Submersibles</div><div><<a shape="rect" href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">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" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> </div> </blockquote></div>_______________________________________________<br clear="none">
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