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Hi Scott, Sorry to hear about your accident. I got hit by a car while riding my motorcycle back in 2003 and can vouch that it's not fun. I believe conventional wisdom is to forgo the copper and use stainless steel. The K-600 has SS plumbing throughout. The problem you're going to have with putting the vent valves internal is requiring two penetrations for each valve (inlet and outlet for air) instead of the one penetration for the valve stem. I personally do not care for K-boat vent configuration and am going to try to come up with an electric or compressed air modification. Vance Bradley was working on a ballast tank vent design at one time but I haven't heard anything about it for a while. I like the DC breaker box idea. I might think about that myself. 200psi is 449 feet sea water. Since the K-350 is only rated for 350 feet, using the 200psi first stage shouldn't be a problem. However, yes if you drop to 500 feet then water would infiltrate the system and you won't be able to use your ballast tanks because the outside pressure is stronger than the first stage. There's a very simple technique to prevent getting in this situation however, just don't dive in any area in which the water depth exceeds 350 feet. Not sure what you mean regarding the motor pods since the plans call for 1-ATM housings not oil-filled housings. We definitely could use a good white-paper or photo-journal that describes how to do it. It's fairly simple but I can sympathize with you, when you aren't familiar with it the concept can be confusing exactly how to perform it. I have some photos of JimK's Bionic Guppy motors which are oil filled. Let me find them and post them and it should help. We're scheduled to go to Muskegon Michigan for the convention this year and I'm working out the final plans. However, I sent out a request for speakers and got no response. Unless we get 3 or 4 people to present topics there won't be any need for technical sessions. That leaves the potential for sub diving but with the exception of some local folks in the area I suspect gas prices are going to curb any subs that might have otherwise considered the trip. Unfortunate since the facility has the resources to support us for diving. In any event, I'll be sending out notice in a week or so for registration. If we get to end of May without speakers or subs then we'll cancel this years event and wait until more people are willing to participate. Jon On 4/18/2012 11:31 PM, Scott Waters wrote:
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