Jim,
That is great news! Send update pics.
David Bartsch
From: kocpnt@tds.net
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] tanks
Date: Tue, 6 Jan 2009 04:33:42 -0600
Hi David,
I followed the post about the hard ballast tank. You're right, but the hard tank does not have to be outside. Mine will be inside with about 650 # of bouyancy capability!
Also got some good news yesterday, The machine shop called and the window seat is now machined in my transition cone. If I have time I will be picking it up today!
Best Regards,
Jim K
----- Original Message -----
Sent: Tuesday, January 06, 2009 3:44 AM
Subject: [PSUBS-MAILIST] tanks
Frank has me thinking again...
Lets see if I understand this as I should...
The hard ballast tank is a tank outside of the pressure hull that is subjected to the forces of the outside ambient pressure. To surface, one blasts air into this tank with the vent valves closed. This forces the water down and out thru ballast tank vents allowing the sub to become more bouyant and it bobs to the surface...
Soft tanks are such as buckets within the sub subjected but to cabin pressure and are used to fine tune the bouyancy and for trim adjustments. Water is pumped from one tank to another (If more than one is available) to control trim angle.
How does one remove this water from these soft tanks on a small psub?
David Bartsch
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