Re: [PSUBS-MAILIST] Alan Winnick Explorer sub

[Alan Winick <subguy33@yahoo.com>]

Brian:

The K-250 was originally fitted with a single dome. I
don't know if others have added a second. I'm a great
believer in impact domes and Explorer has an outer
3/8" free-flooding dome. I'm glad it's there, though
it makes cleaning a bit more of a pain. If you use
one, though, it should be seated in a way so that the
force of an impact isn't directly transferred to some
critical part in the structure or retaining of your
primary dome.

Alan
--- Brian Cox <ojaibees@ojai.net> wrote:
> Alec,  did that flat sheet of acrylic start out
> thicker than 2"?   Also
> I've noticed a number of subs (I think a Kitredge
> sub)  that only have a
> single dome, is that the case or am I just not
> seeing the additional
> safety dome?
> 
> Brian
>   ----- Original Message ----- 
>   From: Alec Smyth
>   To: personal_submersibles@psubs.org
>   Sent: Tuesday, November 25, 2003 6:40 PM
>   Subject: RE: [PSUBS-MAILIST] Alan Winnick Explorer
> sub
> 
> 
>   It is possible to make a cheap dome, if you blow
> it from sheet as
> opposed to having it cast. The big drawback of
> blowing domes from a
> sheet is that the material thins out at the apex of
> the curve, and it's
> the minimum thickness that counts for your
> calculations. The trick is to
> design a dome with a reduced included angle. Looking
> at the pictures of
> Solo, you would probably think the dome is a full
> hemisphere (180
> degrees). However that is only true of the outer
> dome. The structural
> interior dome has an included angle of just 120
> degrees. The visibility
> is great but the apex thickness is reduced to a far
> lesser extent. So
> there you go. a 2" thick dome for just $1,500.
> 
> 
> 
>   Alec
> 
> 
> 
>   -----Original Message-----
>   From: Chris Nugent [mailto:dirkpitt77@yahoo.com]
>   Sent: Tuesday, November 25, 2003 8:16 PM
>   To: personal_submersibles@psubs.org
>   Subject: Re: [PSUBS-MAILIST] Alan Winnick Explorer
> sub
> 
> 
> 
>       For what it's worth, Stanley Plastics quoted
> me a little over $300
> US for just a simple 1.5" thick, 12" diameter flat
> viewport.  I don't
> remember if that was certified and tested, but I
> opted to go that route
> as it seems a bit less expensive than a dome.  Eight
> viewports for
> around $2500-can't beat it.
> 
> 
> 
>        Chris Nugent
> 
>   Carsten Standfuss <MerlinSub@t-online.de> wrote:
> 
>     Hi - Stanley Plastic for example make this size
> domes - the last I
>     requested was about 8000 USD with certification
> and test - maybe
> about
>     5000-6000 without. But there are other non
> certificate builders make
>     something in this size for 3000. Depents on
> diameter and how deep
> you
>     want to go.. shallow water maybe less.
>     Look in the archive files - there are amazing
> amount of
> informations..
>     look for "domes" or "arcylic" or simillar.
> 
>     best regards Carsten
> 
>     CurtisUehara@aol.com schrieb:
>     >
>     > I have been looking at the psub picture
> gallery and I think I
> would
>     > like to build something like Mr. Winnick did.
> The Explorer sub. It
>     > is not too big and looks pretty easy to
> understand how it works.
> The
>     > parts would not be hard to make I think. But I
> cant make the glass
>     > bubble in front. Did he buy that? Who makes
> them? Is M! r. Winnick
> in
>     > the message group now? Thank you. Curtis
> Uehara.
> 
> 
>
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