Re: [PSUBS-MAILIST] Isn't 'Mini book review.' anymore--pressure test

[DBACKIDS@aol.com]

Even though testing with water would be more efficient, testing with air would be cheaper, would it not? All you need is a chamber big enough for your hull, and a compressor pump. Air is cheap; in fact, it's so cheap, it's free! If you're in Arizona or anywhere you can't just pump straight from a lake or ocean, you'd have to pay one heck of a water bill by the time you test it!
I think I can safely asume the chambers would be the same (therefore, same cost), except, you would not have to have the air chamber supported as much (a couple hundred gallons of water gets kinda heavy, not as much so as I think the equivalent psi of air would be). The pump would most likely be cheaper for air, all you need is a high power compressor, whilst you would need a mondo (I like that word) high pressure water pump.

That's my two cents worth, take as you may.

David (from CA, not MN)