[PSUBS-MAILIST] Trustworthy launch

[swaters]

Dry weight is 3920 lbs. I weighed it at the scale today with batteries, tanks, etc. but no occupants.
Thanks,
Scott Waters




Sent from my U.S. Cellular© SmartphoneDouglas Suhr <spiritofcalypso at gmail.com> wrote:Hi Scott. Congratulations on your initial launch of Trustworthy! Glad to hear that you have no leaking. Out of curiosity, were you able to get an accurate dry weight yet? This would give you at least some idea of where to start with ballasting calculations. As you mention, if your scuba tanks are mounted exteriorly you would want to subtract their majority from your weight-in-water. what was the status of the variable tank during testing (% full)? ~ Douglas S.   


On Sun, Sep 15, 2013 at 11:19 AM, swaters <swaters at waters-ks.com> wrote:
Hey guys. I did the first dive in trustworthy. The boat is bone dry with no leaks or even weeping after being in the water for three hours. I did have a few electrical problems due to not getting the grounding bolt area clean enough of epoxy paint, but that is a easy fix. A problem I had was not weighing enough. It was me and a buddy we both weigh 175 pounds or so. The two drop weights are 250 pounds total (same as kitteredge). I ended up putting 100 pounds of lifting weights, about 200 pounds of old jacks and it still wouldn't go down. I had the safty dives stand on it and it went down. After scrathing my head for a while I decided the scuba tanks on the outside which had 100 pounds negative boancy now is close to 0 boyancy so that makes due for a little, of the extra floatation. But what about the extra weight of the jacks and the divers? The only thing I can think of is the tanks were not venting well. I notice they got hydro locked way to easy. It seems like the 1/2 " line is way to small. So the only thing I can figure out is maybe the ballest tanks were not venting all the way. Everything about my sub is built just like the blue prints so that is the only thing I can think of about it being to bouant. Any thoughts?
Thanks,
Scott Waters




Sent from my U.S. Cellular© Smartphone

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