[PSUBS-MAILIST] Hatch/Hatch Ring Flatness Evaluation

[Steve McQueen via Personal_Submersibles]

OK, I wasn't really sure.  I know this hatch/tower ring has historically
functioned.  This hatch is pretty beefy in my opinion.  I have bigger fish
to fry so I will move on for now.  I had the hatch on as I am evaluating
how I can make it open from the exterior. I would like to do this by only
having to create 2 penetrations.

​
​


On Sat, Apr 26, 2014 at 8:52 PM, Private via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Steve,
>
> This is normal. With Snoopy you can see light in places, even with the
> o-ring installed. The light disappears just hand-tightening the dogs.
>
> Best,
>
> Alec
>
>
>
> > On Apr 26, 2014, at 5:08 PM, Steve McQueen via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
> >
> > All, I am evaluating my K-250 hard hatch/tower ring mating. This hard
> hatch was custom made for this K-250 by the previous owner.
> >
> > When the hatch is closed (w/o-ring removed) and the interior of the sub
> is brightly lit I notice I can see light between the hatch and hatch ring
> in places. The "gaps" are not huge and I believe with the o-ring installed
> no light would be seen.
> >
> > However I believe it tells me there are some flatness issues in this
> interface. In a perfect world I should see no light.
> >
> > My questions are, what is a precise way to identify the "high points"
> and is grinding the hatch surface vs. the tower ring the right surface to
> modify?
> >
> > Steve
> > _______________________________________________
> > 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/20140427/92da1e57/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Hard Hatch Compressed.jpg
Type: image/jpeg
Size: 29223 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140427/92da1e57/attachment-0001.jpg>