[PSUBS-MAILIST] Trustworthy launch

[swaters]

I also plan to rip out the 1/2" lines and go with 3/4" lines for the ballast vents. I want to avoid hydro locking and have the ability to vent quicker.
Thanks,
Scott Waters




Sent from my U.S. Cellular© SmartphoneMerlinSub at t-online.de wrote:dive was in Saltwater? (density 1.025) 

vbr carsten  

"swaters" <swaters at waters-ks.com> schrieb:
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
 

-- 

Carsten Standfuß
Dipl.Ing.Schiffbau @ Meerestechnik
Heinrich Reck Str.12A
18211 Admannshagen

0172 8464 420
WWW.Euronaut.org
Carsten at euronaut.org
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