[PSUBS-MAILIST] Minn Kota 101 - thread spec

[Alec Smyth via Personal_Submersibles]

Hi James,

I agree it can be a bit of a pain getting the last bit of air out. What I
do is cut off the inside of the plastic pipe nipple so it barely protrudes
inside the can. Also, I've got an idea for the next version... its using a
little bellows bottle instead of the wrap-around, which would have a lot
more volume flexibility. My problem is how best to connect the bottle to
the motor, I'm still playing around and haven't come up with a specific
arrangement. Suggestions are welcome!

http://www.brownells.com/gunsmith-tools-supplies/shop-accessories-supplies/liquid-squeeze-bottles/bellows-style-oiler-3-pak-sku084000164-20419-44730.aspx


That said, I've used the existing method for years and years without
incident, and the last dive was to 220 feet with no leakage whatsoever in
any of the three motors. I think over-pressuring would be fine if the shaft
seals could take pressure in either direction, but these have lip seals so
it would be tend to blow them out.

Best,

Alec




On Mon, Jul 21, 2014 at 5:17 AM, James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> 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
>>>
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>>>
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