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Re: [PSUBS-MAILIST] wooden hull Psub revisited
Eliezer:
Right now I only have a three view in AutoCAD 2000. If someone will tell me
how I can post a Jpeg, I can do that for comment.
Regards,
John in Keswick
----- Original Message -----
From: "Eliezer Rodriguez" <eliezer_rodriguez@hotmail.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, March 22, 2002 11:22 AM
Subject: Re: [PSUBS-MAILIST] wooden hull Psub revisited
> Hi;
>
> I find this topic very interesting, as myself was considering the idea
> because of both reasons you stated below, "where budget (and presumably
> depth) is limited". I will be very happy to see the picture of it. Can it
be
> scanned, Micheal?
>
> Regards,
>
>
> Eliezer Rodriguez
> "The only thing in life to fear is fear itself."
>
>
> >From: Michael Holt <mholt@richmond.edu>
> >Reply-To: personal_submersibles@psubs.org
> >To: personal_submersibles@psubs.org
> >Subject: Re: [PSUBS-MAILIST] wooden hull Psub revisited
> >Date: Fri, 22 Mar 2002 11:07:58 -0500
> >
> > > John Gaertner wrote:
> > >
> > > I recently rejoin the Psub mail list after a two year break. I have
> > > been looking into the use of wooden "doughnuts" as a means of building
> > > a 1 atm. 100 ft max diving depth psub for personal use. I reviewed the
> > > archives but unfortunately those who commented on it, their email
> > > addresses bounced back. So I would like to open the floor up for
> > > discussion...
> >
> >Welcome back, John.
> >
> >The wooden donut idea goes all the way back to the 60s, with
> >Helle Engineering the Submanaut. It's in Busby on page 221
> >and on page 250. Busby lists a collapse depth of 2000 feet
> >and an operating depth of 200 feet.
> >
> >Jerry /Stachiew even wrote about it, in Underssea Technology
> >magazine (Sept., 1968). I've never read that article.
> >Busby's review of the article notes that Stachiw felt plywood
> >has a place in submarine hulls where budget (and presumably
> >depth) is limited.
> >
> >I talked with Mr Helle (his first name eludes me right now),
> >in about 1989. The boat was out of the water but in good
> >condition. His wife wanted to give me the boat, but he
> >hesitated (of course it works like that). He said there
> >never were any problems with it.
> >
> >According to Busby, the technique is to cut 4-inch wide
> >ring panels from the wood. The rings are glued together
> >and the whole is glassed over.
> >
> >I suspect a problem would arise if the boat were going
> >to spend all its life in the water, or if it were cycled
> >too often. ne might have to very careful about how
> >the boat were launched, because the plywood might crack
> >internally if the stress were not evenly distributed as
> >it began to float.
> >
> >
> >
> >Mike
>
>
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