[PSUBS-MAILIST] Minn Kota 101 - thread spec

Mon Jul 21 11:30:42 EDT 2014

Wow, love those wheels, I think they look great and will work even better.
You didn't skimp on the number of them either!

On Mon, Jul 21, 2014 at 8:40 AM, James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Guys,
> 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.
>
> 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.
> Regards
> James
>
>  
>
>
>
>
> On 21 July 2014 12:19, via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> 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.
>> Vance
>>
>>
>> -----Original Message-----
>> From: Alan James via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Sent: Mon, Jul 21, 2014 5:59 am
>> Subject: Re: [PSUBS-MAILIST] Minn Kota 101 - thread spec
>>
>>   Hi James,
>> I could generate some robust discussion here, but I don't think the wrap
>> around tube is a very good idea.
>> If you look at professional oil compensation units, they are set at about
>> 4-5psi above ambient pressure &
>> have reservoirs to compensate for oil loss & for oil expansion as it
>> heats up.
>> From past posts, Emile & Carsten had all soughts of trouble with oil
>> compensating & Emile changed to
>> rim thrusters. I have read a previous post where someone quotes a guy
>> with years of experience modifying minnkota
>> 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
>> of the reason the wrap around tube seems to work. Still, if water gets
>> in there will be some protection from the oil.
>> Cheers Alan
>>
>>
>>   ------------------------------
>>  *From:* James Frankland via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> *To:* Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> *Sent:* Monday, July 21, 2014 9:17 PM
>> *Subject:* Re: [PSUBS-MAILIST] Minn Kota 101 - thread spec
>>
>>   Hi Cliff,,
>> 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?
>> Thanks
>> James
>> 
>>
>>
>>
>>
>> On 19 July 2014 01:38, Clifford Redus via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>
>>
>>   Thanks
>>
>>
>> Cliff Redus
>>
>> On Jul 18, 2014, at 7:26 PM, Alec Smyth via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>  Hi Cliff,
>>
>> It is a parallel thread, 1 1/8" - 18.
>>
>> Best,
>>
>> Alec
>>
>>
>> On Fri, Jul 18, 2014 at 8:04 PM, Cliff Redus via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>    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.
>>
>> Can anyone confirm this?
>>
>> Cliff
>>
>> _______________________________________________
>> Personal_Submersibles mailing list
>> Personal_Submersibles at psubs.org
>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
>>
>>  _______________________________________________
>> Personal_Submersibles mailing list
>> Personal_Submersibles at psubs.org
>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
>>
>> _______________________________________________
>> Personal_Submersibles mailing list
>> Personal_Submersibles at psubs.org
>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
>>
>>
>> _______________________________________________
>> Personal_Submersibles mailing list
>> Personal_Submersibles at psubs.org
>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
>>
>>     _______________________________________________
>> Personal_Submersibles mailing listPersonal_Submersibles at psubs.orghttp://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
>>
>> _______________________________________________
>> Personal_Submersibles mailing list
>> Personal_Submersibles at psubs.org
>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
>>
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140721/8a612786/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: wheekls.jpg
Type: image/jpeg
Size: 61497 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140721/8a612786/attachment-0002.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: motor.jpg
Type: image/jpeg
Size: 34837 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140721/8a612786/attachment-0003.jpg>