[PSUBS-MAILIST] Trustworthy launch

[Alan]

Congratulations Scott,
I was also too light also.
If the ballast tanks aren't venting fully for some reason, you could check that by  adding weight to get neutrally buoyant & diving to a shallow depth. If there is still a lot of air in the tanks it will
Compress & make you heavy.
Alan

Sent from my iPad

On 15/09/2013, at 7:01 PM, hank pronk <hanker_20032000 at yahoo.ca> wrote:

> Well done Scott,
> Now throw the calculator in the garbage can and jut keep adding weight.  This always happens to me, better you are to light.  We have a bunch of weights in the boat ready to go.  We even have had to go to shore for rocks.  :)
> 
> From: "MerlinSub at t-online.de" <MerlinSub at t-online.de>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
> Sent: Sunday, September 15, 2013 10:24:00 AM
> Subject: Re: [PSUBS-MAILIST] Trustworthy launch
> 
> Hi Scott, with a boat first launch and the overall weight 
> much to light the tanks can not vent complete, 
> the will stay partly over the waterline..
> 
> By the way - It is good that the boat is to light and not to heavy... 
> You have just add lead or steel, old batteries or rocks. 
> My subs were all to light on the first launch. 
> 
> Gratulations! 
> 
> 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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