Never mind, I just went back through the projects page and got most of the questions answered. May I assume that the cylindrical extension was used due to the fact that you COULDN'T find a supplier for deeper heads?
Next question: George always told me I could weld anywhere through the head except in the knuckle. You, on the other hand, put that bloody great window right through that baby. How does that look on the calculation sheets for additional stress?
Vance
-----Original Message-----
From: vbra676539@aol.com
To: personal_submersibles@psubs.org
Sent: Fri, Oct 23, 2009 8:00 pm
Subject: [PSUBS-MAILIST] elliptical heads
Frank,
When you were looking for hull bits, did you find a fabricator who could and would do non-standard elliptic heads? I'm fiddlig with the old Diving Saucer shape, which was 1.5 meters by 2 meters, give or take an inch, and was 3/4" thick. I like the space and payload available with that shape. A 2:1 head gives you, what, four feet in height? I don't remember the thickness of your hull. What does the shell weigh and what depth are you figuring for test and operating?
Vance