[PSUBS-MAILIST] hatch ring

["Brian Cox" <ojaivalleybeefarm@dslextreme.com>]

I have a Question about where the hatch ring ( stainless 1" thick land) gets
welded to the short (4"?) piece and then that gets welded to the middle part
( where the viewports are).

Assuming that the sub is using 1/4" A516 70 steel,  the collar of the
conning tower would be 3/4 steel, then going up from there, the viewport
area (about 12") can be 1/4" ,  now that upper 4" piece, that the hatch ring
is welded to, is it ok for that piece to be 1/4" or does it need to be
heavier?

The reason for the short 4" segment is so that the hatch ring does not get
warped during the welding process, when it gets welded to the conning tower.

Thanks for any info

Brian




************************************************************************
************************************************************************
************************************************************************
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
************************************************************************
************************************************************************
************************************************************************