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Hi James, If some one were to use the configuration you have for pods cap attachment, would you think it would work best to drill the holes with the two ring mating surfaces clamped together, and after you welded on the rings and finished machining them? Szybowski > To: personal_submersibles@psubs.org > From: james@guernseysubmarine.com > Subject: [PSUBS-MAILIST] Pod Seals > Date: Mon, 27 Apr 2009 10:32:07 +0100 > > Hi Everyone. > > Quick question. > > Ive been machining the alternative sealing arrangement for my battery pods. I had problems with the cladding system shown on the K350 plans so after messing about for ages trying to get that right, i gave up and have opted for a straight forward flat rings and O ring seal. I know its not as streamlined, but it will be easier to get the pods open. (thats my excuse, the real reason is that they are easier to make!) > > http://www.guernseysubmarine.com/index_files/Page17899.htm > > I have nearly completed the machining work on the endcaps as well now (not shown). BUT, there is another problem. > > Due to distortion from welding, the nice straight holes i drilled that all line up, are no longer straight. I drilled them all 9mm. > > The question is, > > 1, Leave them and just use a smaller bolt? Does this tollerance matter? As long as the bolts pull the 2 faces shut. > > 2, Do i drill them straight again? Maybe 10mm. I dont like this idea as i dont want to damage the machined surface and it will be awkward to hold the caps vertical somehow. > > Option 1 surely? > > Any ideas? > > Thanks as always. > James > > |