[PSUBS-MAILIST] More questions on building a sub

[TeslaTony@aol.com]

I don't know how much you all have talked about these on the list but I 
thouhgt they would be worth asking anyways.

1. How much space does the life support system take up (O2 tanks, scrubber, 
etc.)? I don't need an exact number just yet, only a rough idea of how big I 
need to make that particular compartment.

2. Where can I get all the formulas and figures that I would need in order to 
design a sub and know its limits? (O2 consumption rate, needed rebreather 
material amount, hull integrity, dome integrity, needed horsepower, 
horsepower to prop diameter ratios, etc.)

3. What is a good book? I know that the PSubs.org wesite has a list of 
several books, but how many of them would I really need? (btw, I can't afford 
a $130 copy of any book just yet)

4. Where is a good place to put the motors, inside the main hull or outside 
in a secondary hull?

5. Does anyone know anything about using jets from a jetski to propel the sub 
or is this totally new territory? (The main things I want to know are whether 
or not the can water just be let in, do they have to have pressure 
compensation or are they strong enough to handle the pressure?)

6. What kind of controller arrangement does everyone have?

7. How are the things that need holes in the hull made so that they don't 
leak or compromise the safety of the sub?

8. Can the gas in the ballast tanks be allowed to just bubble off into the 
water to sink and then be replenished from a CO2 cylinder or other gas tank 
or should there be a compressor to pump the gas from the ballast tanks into a 
pressure vessel?

9. Is there anything that I should know that I didn't ask?

Anthony