[PSUBS-MAILIST] hatch pin

[James Frankland via Personal_Submersibles]

Hank.

I did exactly that.  Locked the hatch shut dead tight and welded the hinges
and brackets etc on with no leeway in the pin.  When it was done, the hatch
didn't close properly.  I don't know why.  I filed about 1mm off the hinge
holes and then it closed.  I don't seem to notice any play with the springs
on and the hatch doesn't leak.

Regards
James

On 22 March 2016 at 15:03, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All,
> When I built my hatch system, I built it so the hinge pin has moment in it
> so the o-ring would have full contact before the hatch was fully closed
> metal to metal.
> When I vacuum test it, the hatch is not perfectly even in the seat, or at
> least it seems like it.  I am wondering if I should close the hatch with
> the o-ring out and the hatch perfectly positioned and then weld bushings to
> the hinge so the pin has no movement.   Or should I leave it alone and
> expect that the external pressure will push the hatch into place?
> Hank
>
> Scott, did you notice if your hatch hinge has play?
>
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