[PSUBS-MAILIST] first launch.

[Rick Patton via Personal_Submersibles]

I have 5 places where water could get in to the thruster so going to put it
all back together and apply a positive pressure threw where the 90 degree
swivel  for the air comp is and do a bubble check after confirming that the
two O rings on the prop shaft are in fact in.

Rick


On Sat, Nov 29, 2025 at 3:27 AM Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Totally agree with James. If it leaked in 8" it's probably a forgotten or
> misaligned O-ring, or some such assembly issue, rather than the seals.
>
> On Fri, Nov 28, 2025 at 11:04 PM Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Rick,
>> I've heard that the seals in the Minn Kottas are good for 30 - 100ft. So
>> regardless of the compensation, it shouldn't have leaked past the 2 shaft
>> seals.
>> Perhaps one of the large o-rings that seal the motor sections together
>> was pinched when it was put together.
>> I wonder if the water was coming in to the hull through the motor wiring
>> shaft.
>> All the best.
>> Alan
>>
>>
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>>
>> On Sat, 29 Nov 2025 at 4:05 pm, Rick Patton via Personal_Submersibles
>> <personal_submersibles at psubs.org> wrote:
>> The boat ramp here is in a river that runs into the ocean just 1,500
>> yards away so it's mostly fresh if not all.
>> I did have the air comp on but I didn't dive it, just stayed at the dock
>> to add weight where needed to plumb her out so with the thruster just 8"
>> submerged  maybe the second stage reg isn't as accurate at the surface?
>> Keep you all posted as I proceed.
>>
>> Rick
>>
>> On Fri, Nov 28, 2025 at 3:11 PM Alan James via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Rick,
>> if it's just the thruster & not the electronics you could open her up,
>> rinse well with fresh water, dry & re-assemble. You will probably have
>> corrosion in the wiring caused by wicking ( wire hot after operation sucks
>> in water as it cools). You can replace the wiring but will probably get
>> away with it seeing the wiring should be reasonably thick.
>> Did you not have air compensation?
>> Regards Alan
>>
>> Yahoo Mail: Search, organise, conquer
>> <https://mail.onelink.me/107872968?pid=nativeplacement&c=US_Acquisition_YMktg_315_SearchOrgConquer_EmailSignature&af_sub1=Acquisition&af_sub2=US_YMktg&af_sub3=&af_sub4=100002039&af_sub5=C01_Email_Static_&af_ios_store_cpp=0c38e4b0-a27e-40f9-a211-f4e2de32ab91&af_android_url=https://play.google.com/store/apps/details?id=com.yahoo.mobile.client.android.mail&listing=search_organize_conquer>
>>
>> On Sat, 29 Nov 2025 at 11:46 am, Rick Patton via Personal_Submersibles
>> <personal_submersibles at psubs.org> wrote:
>> Finally got her wet! my port thruster flooded and was wondering if anyone
>> else had that happen and were they able to recover it? some water in the
>> bilges which was a bit disconcerting so next time in, there will be no
>> floorboards.
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