Re: [PSUBS-MAILIST] floatation

["Rick and Marcia" <empiricus@telus.net>]

Hi, Andy - how deep do you plan on diving with your sub?

If it's just a few atm's, why not save the expense and build hard tanks with
a water inlet and air outlet . . . it's amazing how much pressure five
centimetres of glassed over plywood will take.

Rick
Vancouver


----- Original Message -----
From: <drewacard@charter.net>
To: <personal_submersibles@psubs.org>
Sent: Friday, October 28, 2005 7:48 AM
Subject: Re: [PSUBS-MAILIST] floatation


> http://www.aircraftspruce.com/catalog/cmpages/bubbles.php
> a lb for $7 a lb
> 1500 lbs of lift no matter how you slice is a lot of lift
> i was thinking 50-100 lbs of lift or maybe used as fixed trim.
>
> Andy
>
> From: "rick miller" <rickm@pegasuscontrols.com>
> Date: 2005/10/28 Fri AM 08:57:24 CDT
> To: <personal_submersibles@psubs.org>
> Subject: Re: Re: [PSUBS-MAILIST] floatation
>
> comercial tested syntantic foam is about 10 dollars a pound of lift.
>
> assuming 60 dollars a gallon for resin and using tested fillers at 25
> dollars a pound it still cost about 10 dollars a pound for lift to make it
> your self.. figure wholesale pricing could get that down to 5 to 6 dollars
a
> pound. and when you need 1500 pound of lift this is starting to get
> expensive.
> ----- Original Message -----
> From: <drewacard@charter.net>
> To: <personal_submersibles@psubs.org>
> Sent: Friday, October 28, 2005 6:03 AM
> Subject: Re: Re: [PSUBS-MAILIST] floatation
>
>
> > Glass Micro Spheres
> >     Made of crush-resistant hollow glass, these micro-sized spheres
> > displace four to six times their weight in most resins. Spheres are used
> > as a filler when added to completely mixed epoxy resin and hardener.
> > Supplied in a 1-lb. bag.   1414T36  Each  $14.98
> >
> > I think I posted this before???
> >
> > http://www.mcmaster.com/
> > part number 1414T36
> > 4-6 lbs of float per lb
> >
> >
> > Andy
> > From: "Rick and Marcia" <empiricus@telus.net>
> > Date: 2005/10/28 Fri AM 04:43:06 CDT
> > To: <personal_submersibles@psubs.org>
> > Subject: Re: [PSUBS-MAILIST] floatation
> >
> > Hi, Bill - dunno.  I gave up on syntactic foam about 25 years ago  :-)
> >
> > Rick
> > Vancouver
> >  ----- Original Message -----
> >  From: Akins
> >  To: personal_submersibles@psubs.org
> >  Sent: Friday, October 28, 2005 1:43 AM
> >  Subject: Re: [PSUBS-MAILIST] floatation
> >
> >
> >  Hi the other Rick. Lol.
> >
> >  Expensive huh?  How expensive is expensive?
> >
> >  Can one buy the glass balls and make up their own epoxy/ball mix?
> >
> >  Anyone tried their own mix that way?
> >
> >  Bill.
> >
> >
> >    ----- Original Message -----
> >    From: Rick and Marcia
> >    To: personal_submersibles@psubs.org
> >    Sent: Friday, October 28, 2005 3:07 AM
> >    Subject: Re: [PSUBS-MAILIST] floatation
> >
> >
> >    Hi, Bill - the other Rick here.
> >
> >    Mucho expensive stuff.
> >      ----- Original Message -----
> >      From: Akins
> >      To: personal_submersibles@psubs.org
> >      Sent: Friday, October 28, 2005 12:11 AM
> >      Subject: Re: [PSUBS-MAILIST] floatation
> >
> >
> >      Hi Rick.
> >
> >      Ahhhh, I see. So these tiny little glass balls are all mixed up in
> > the epoxy and this takes the shape of
> >
> >      whatever it's poured into and becomes uncompressable ballast. Cool!
> > Where can you get this syntactic foam?
> >
> >      Thanks, Bill.
> >
> >
> >
> >
>
>
>
>
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