[PSUBS-MAILIST] when depression is a good thing

[Antoine Delafargue via Personal_Submersibles]

Hello all,
just sharing with you that I put my sub under a bit of vacuum for an
unplanned test (I had left the sub under the sun, the cabin air got hotter
and pushed through the hatch which was just closed but not shut, then
everything went into depression inside when I pulled the sub back into the
garage).

one month later it was still holding vacuum...

I would not believe it given all the holes in the hull, some being
connections with tapered threads covered with teflon tape, plus I had not
especially cleaned the hatch surface nor greased the main oring.

Days like this I am grateful for the cumulative decades long experience of
engineers and people like you that go into this kind of result!

have a good week end

antoine
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20190802/f68a1f5e/attachment.html>