Re: [PSUBS-MAILIST] Hull failure calculation sheet

[Ian Roxborough <irox@ix.netcom.com>]

On Mon, 13 Oct 2003 10:42:18 -0600 (MDT)
dinosnider666@spacemail.com wrote:

> Based on that, I'm using off-the-shelf sewer pipe parts, very small internal volume. Torpedo shape is as small as possible for a sub. Think I have 2500 lb dry weight. And 1500 lb payload after structure. 

Do you get an certificates, or guarantees with your sewer pipe?
I.e., that it's made from such'n'such quality steel and inpected
for defects.  At least you are getting it new, rather than used,
hopefully it will be less abused...

> I didn't know anything about batteries til a month ago. Me 'n Ryan have figured out how to roll our own that match top-end batteries. Sure, we'll screw it up the first few times. But once prototype works, we'll scale up and put the labour in. There are part-marks for tenacity.

Would you care to share your roll-your-own battery technology
with the list?

This is something I've looked into before, but the mess and
expence didn't seem worth it, compared to the power storing
of even cheap batteries.  The main think I wanted to do (wasn't
save money) was to make cylinder shaped batteries that would
neatly fit into cylindrical battery pods.  This should give better
energy storage per pound of water displaced.  But in the end,
I figured I would just use normal batteries and hope that some
day somebody make comparitable cylindrical batteries.

Ian.