Re: [PSUBS-MAILIST] lazy man's syntactic foam

[Jon Wallace <jonw@psubs.org>]

Sorry, I misread your original post.  So you're thinking of just putting 
the macro-spheres in a free flooding container, no binder at all.  Other 
than a deep water test to ensure the rating of 250psi is accurate, you 
might also consider the effects of any trapped air that might occur 
between the spheres deep within the container.  I have no idea if there 
would none, some or lots, but any air that does get trapped it compress 
and vary your buoyancy.  Of course this may not be enough to worry about 
but just something to keep in the back of your head.

Also Dean, do the "winnowing" as recommended by Cliff (slide 14 in 
syntactic foam slide set) to get rid of any spheres that might be 
malformed or broken.

Jon



Recon1st@aol.com wrote:
> *Jon and Frank. The spheres I have are rated to 250psi with 100% 
> survival.*
> *I am thinking that with out the binder and microspheres they should 
> do the job.*
> *The abrasion is a thought but they are tough little buggers, can't 
> imagine that being*
> *a concern. *
> ** 
> *I can picture even pressure around each sphere except for it's 
> buoyancy, and those *
> *below it. *
> ** 
> *Dean*
>  




************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.

PSUBS.ORG
PO Box 53
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************