From: James FranklandSent: Friday, September 09, 2011 4:47 AMSubject: Re: [PSUBS-MAILIST] K350 Main TanksHi Alec,>I hope you're better.Yes, thanks. Nothing serious. Just delayed me from getting more paint on my sub.>Air compensation vs.. oil is a much hashed thread, with lots in the archives, and the bottom line is that >they both work fine.Interesting. Sounds like you did the right thing to get rid of that system.>Coincidentally, I am taking Snoopy out on a two day dive trip this evening. If all the new mods work as >intended, will be posting photos and videos shortly after my return. She is utterly different these days to >what you see on the site or the PSUBS projects page on any of the videos.Sounds great. Its always good to see other boats in action. Have a good time and i'll look forward to hearing how you got on.Kind RegardsJamesThanks,
Alec
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of James FranklandSent: Thursday, September 08, 2011 11:24 AM Subject: Re: [PSUBS-MAILIST] K350 Main TanksHi Alec,Appologes for the late reply, ive been ill.>1) It looks like you have a flat bulkhead closing off the end of each tank that faces the hull. If that is so,Yes, that is the case but its a thinner piece as it is supposed to be cut off. I seem to remember you saying somewhere before you thought the strap on tanks were a pain. I think i'm too late to change it now, might just have to lump it.>2) Use that lip to bolt on a flat cover underneath, and put large diameter pipe downward about a foot. >You can easily attach the down pipe with nothing but a hole saw and nylon bathtub drain fittings.I think this is a good idea. Im not sure it will work for the front tank as i have to accomodate the large dome, but for the rear its a distinct possibility. I wish i'de gone for saddle tanks to be honest like Nemo, but its too late now and i do like the way these look at least.Just out of interest. I watched the psubs video of the Snoopy build last night. Ive seen it before but its much more relevant to me now ive done most of the stages. Anyway, Dale talks about his pressure compensated motor arrangement. A water feed from the depth gauge line to one side of a diaphram pressure regulator, the other to hp air into the motor. Bleeds back through itself. Sounds like a good idea. Why did you take that off and go for an oil compensated system?Im going to go for oil, but im just curious.RegardsJamesBoth these ideas are part of the design for my next boat, based on K-250 experiences.Thanks,
Alec
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From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of James Frankland
Sent: Tuesday, September 06, 2011 12:23 PM
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] K350 Main TanksHi All,My main tanks are nearly complete. Ive had them professionally made. Most of the expence is in the making of the foam plug and then the mould, which ive taken on the chin.Now i have a mould, i can get the company to make a set at any time, so if anyone would like me to get tanks made up for them, contact me off list and i'll see how much it would cost plus postage etc.Kind RegardsJames