<div dir="ltr"><div>Hi Cliff\Alec\All,</div><div> </div><div>Sorry Cliff, I just banged that email off quick without remembering you are one of the proper engineers in the group. Im sure you don't need my boy scout tips.! The problem for me is that there seems to be a fair bit of air stuck, obviously trapped by the protruding nipple. When I say "a fair bit", I mean the tube seems to be about half full no matter how much I swing it around and top it up. Ive tried various methods to get shot of it and there always seems to end up this bit. Hence the little plug idea which I agree, introduced another potential leak point. I'll think about it for now.</div>
<div> </div><div>Alec, yes I was pleased with how the wheels turned out. I did it by hand and there was only one wheel that was a bit wonky! 10 wheels per side. Cant wait to test it out next weekend!</div><div>Regards<br>
James</div><div> </div><div> </div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 21 July 2014 16:30, Alec Smyth via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Wow, love those wheels, I think they look great and will work even better. You didn't skimp on the number of them either!</div>
<div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jul 21, 2014 at 8:40 AM, James Frankland via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div>Hi Guys,</div><div>Of course there are different ways of doing it. I think the problem is in my case that i cant get that last bit of air out which is why im thinking of that vent at the back end, if it will fit there. I'd also thought of putting a fuel bulb or similar in the line to allow a larger reservoir. I paid quite a lot for my motors and I really do not want to bust them. Oh, Alecs mail just dropped in. Yes, those bellows are similar to the fuel bulb idea. Ive actually bought several little fuel bulbs as a test. I think i might rig one up and see how it goes. Also i cant trim off the inside of the pipe nipples as I made them from stainless. Could replace them i suppose. hmm.</div>
<div> </div><div>Anyway, on another subject, have a look at my new wheels, im really pleased with them, although im not sure they look quite as good as the skids. Only got one side on so cant tell you how they work, but so far so good.</div>
<div>Regards</div><div>James</div><div> </div><div> <div><img width="468" height="329" src="cid:ii_hxvs679s1_14758ef35bf68b24"><br></div></div><div> </div></div><div><div><div class="gmail_extra">
<br><br><div class="gmail_quote">On 21 July 2014 12:19, via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><font color="black" face="Arial, Helvetica, sans-serif" size="3"><font size="3">The o-ring bucket for the shaft seal and the body seals are not actually designed for any sort of internal head pressure on the M-Ks. That said, I've seen some modified to improve the groove shape and tank tested to failure, which happened at the equivalent of 1200'. This exercise included a modification to the shaft penetration recess to allow for a ceramic pump seal installation. I think you will find that Karl S. compensates (with air) to ambient, and does a lot of diving with little or no trouble. The simple tube compensator (which serves as its own reservoir, I might add) is a time honored compromise. Cheap and effective. Snoopy uses them successfully. Mine work just fine, too.</font>
<div><font size="3">Vance<br>
</font><br>
<br>
<div style="color:black;font-family:helvetica,arial;font-size:10pt"><div>-----Original Message-----<br>
From: Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br>
To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br></div><div><div>
Sent: Mon, Jul 21, 2014 5:59 am<br>
Subject: Re: [PSUBS-MAILIST] Minn Kota 101 - thread spec<br>
<br>
<div>
<div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:10pt;background-color:rgb(255,255,255)">
<div><span>Hi James,</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span>I could generate some robust discussion here, but I don't think the wrap around tube is a very good idea.</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span>If you look at professional oil compensation units, they are set at about 4-5psi above ambient pressure &</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span>have reservoirs to compensate for oil loss & for oil expansion as it heats up.</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span>From past posts, Emile & Carsten had all soughts of trouble with oil compensating & Emile changed to</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span>rim thrusters. I have read a previous post where someone quotes a guy with years of experience modifying minnkota</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span>motors for underwater use, as saying that 3 out of 4 can operate down to 100ft without any compensation. I think this may be part </span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span>of the reason the </span><span style="background-color:transparent">wrap around tube seems to work. Still, if water gets in there will be some protection from the oil.</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span style="background-color:transparent">Cheers Alan</span></div>
<div style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:13px;font-style:normal;background-color:transparent"><span style="background-color:transparent"><br>
</span></div>
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<div dir="ltr"> <hr size="1"> <font face="Arial"> <b><span style="font-weight:bold">From:</span></b> James Frankland via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br>
<b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br>
<b><span style="font-weight:bold">Sent:</span></b> Monday, July 21, 2014 9:17 PM<br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Minn Kota 101 - thread spec<br>
</font> </div>
<div><br>
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<div dir="ltr">
<div>Hi Cliff,,</div>
<div>Others may disagree with this, but ive got a suggestion. If your oil compensating the motors and are going to add the wrap around tube\bladder as per Alecs Snoopy, I would suggest, adding a vent hole somewhere near the aft bearing. With my setup, ive put the tube going around the motor and its all ok. But, I just cannot get the last dregs of air out. No matter what I do. I suspect that its because the pipe nipple protrudes a mm or so into the casing and so will not allow the last bit of air out. It really irritates me and I worry that the motor is not properly compensated. So, I am going to make a modification to the motor like this pic. I think this will work, the suspect bit is mating the plug against the slightly domed motor case. I think a large
rubber washer should seal it. The i should be able to rotate the motor and remove the last dregs of air. What do you think?<br clear="none">
Thanks</div>
<div>James</div>
<div>
<div><img width="562" height="422" src="cid:1.3866221220@web120903.mail.ne1.yahoo.com"><br clear="none"></div>
</div>
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<div><br clear="none"><br clear="none">
<div>On 19 July 2014 01:38, Clifford Redus via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none">
<blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
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<div>Thanks<span><font color="#888888"><br clear="none"><br clear="none"><br clear="none"></font></span>
<div>Cliff Redus</div>
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<div><br clear="none">On Jul 18, 2014, at 7:26 PM, Alec Smyth via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>> wrote:<br clear="none">
<br clear="none"></div>
<blockquote type="cite">
<div>
<div dir="ltr">Hi Cliff,
<div><br clear="none"></div>
<div>It is a parallel thread, 1 1/8" - 18.</div>
<div><br clear="none"></div>
<div>Best,</div>
<div><br clear="none"></div>
<div>Alec</div>
</div>
<div><br clear="none"><br clear="none">
<div>On Fri, Jul 18, 2014 at 8:04 PM, Cliff Redus via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none">
<blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
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<div><span></span></div>
<div></div>
<div> Does anyone have any documentation on the Minn Kota 101 main support female thread spec? It does not look like a tapered pipe thread and the threads per inch look to great. I put a digital caliper on this at it read 1.064-1.07 inches for the minor diameter. I measured the threads and it is 18 threads per inch. I looked in the machine handbook and the closest that comes is a 1-1/8 UNEF (Extra fine thread series). The major and minor diameters for a 1-1/8" UNEF are 1.1250" and 1.0649" respectively.</div>
<div><br clear="none"></div>
<div>Can anyone confirm this?</div>
<span><font color="#888888"></font></span>
<div><br clear="none"></div>
<div>Cliff<br clear="none"></div>
</div>
</div>
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