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RE: Thru hull device
Scott,
I hope you don't take this too personally, but your idea scares me! I'm
probably being overcautious but why would you want to risk your life on
a $7 solution to a $50 problem? Both small amounts compared to the
thousands you will no doubt spend on your sub. Don't scrimp on the
parts that keep bouyancy (and life) threatening water out. If you are
going to rely on testing (which I agree is a valid way to go) make sure
you do some significant cycling of the mechanism. You want to test it
far more than you expect to operate it in it's longest lifetime
otherwise you are simply testing it in actual operation a year or two
down the road.
Take care,
R. D. Morrisson
> ----------
> From: Scott Shakespeare[SMTP:shakey10@hotmail.com]
> Sent: Monday, June 22, 1998 3:00 PM
> To: personal_submersibles@psubs.org
> Subject: Re: Thru hull device
>
>
> >Scott,
> >
> >What did you come up with??
> >
> >Ken Martindale
> >
>
> I'm going to use a steel pipe that runs thru the hull, and a threaded
> bar with 2 rubber expansion nuts screwed on next to each other and
> tightened with washers and nuts. The bar goes inside the steel pipe,
> and
> the more I tighten the nuts, the tighter the seal. The steel pipe is
> about 12" long, with the sealling mech. on the end closest to the
> hull,
> that way the rest of the pipe carries the loads from the dive plane.
> It
> seems like it will work just fine, I'll have to test it first to be
> sure, but i'm confident.
>
> Thanks again for the help.
>
> Scott Shakespeare
>
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