[PSUBS-MAILIST] ROV build video

[Rick Patton via Personal_Submersibles]

Hank
I am amazed that a 1/8" wall was able to take that pressure without
deforming enough to allow the seals on the ends to not fail!
Rick

On Sun, Nov 1, 2020 at 6:12 AM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Sean, I may do an anneal cycle because I have to machine the interior of
> the cylinder to accept the o-ring.  Also I machine the 1 inch thick port
> for the housing.  The tube will be cut shorter unless I need buoyancy.
> Hank
>
> On Sunday, November 1, 2020, 4:40:31 AM MST, Sean T. Stevenson via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
>
> The failure pressure is governed by the wall thickness to diameter ratio,
> plus the end conditions (bulkheads) for buckling modes. Longer tubes will
> be less stable, so you want it just long enough to accommodate your camera.
>
> I don't know what sort of condition your acrylic tubing comes in, but if
> you're cutting / machining it, I'd be inclined to anneal it if you can do
> so easily. Even if there is no issue with the hydrostatic pressure
> performance, annealing will give you a better chance of surviving an
> accidental impact when the tube is already stressed.
>
> Sean
>
> -------- Original Message --------
> On Nov. 1, 2020, 04:25, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
> David, I am just amazed how strong that acrylic is.  Of coarse the small
> diameter is critical.  The tube is 1\8 wall.
> Hank
>
> On Saturday, October 31, 2020, 11:51:32 PM MDT, David Colombo via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hank, that's impressive.  How thick was the wall of the acrylic tube?
> David
>
> On Sat, Oct 31, 2020, 4:25 PM hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> <https://www.youtube.com/watch?v=OL-0z9Rl8jo>
>
> Pressure Testing Camera Housing For New ROV Project
>
> <https://www.youtube.com/watch?v=OL-0z9Rl8jo>
> My new fly out ROV project.
>
>
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