[PSUBS-MAILIST] VBT for K-350

[James Frankland]

Its sch40 pipe, which for 10" pipe is 0.37", about 9mm.

On 18 December 2013 04:39, Jon Wallace <jon.wallace at yahoo.com> wrote:

> STD pipe...but I don't recall the thickness off the top of my head.
>
> --------------------------------------------
> On Tue, 12/17/13, jimtoddpsub at aol.com <jimtoddpsub at aol.com> wrote:
>
>  Subject: Re: [PSUBS-MAILIST] VBT for K-350
>  To: personal_submersibles at psubs.org
>  Date: Tuesday, December 17, 2013, 10:40 PM
>
>
>  Bob et al,
>
>
>
>  What's the standard wall thickness
>  on the K-boat VBT?  Is it approved procedure to weld
>  extra material at the [water valve/drain plug] site before
>  threading it?  If so, it seems it would be possible to
>  have the insert flush with the interior wall.  At least
>  it wouldn't project where it could interfere with
>  draining of the tank and would make it easier to
>  flush.
>
>
>
>  Thanks,
>
>  Jim
>
>
>
>
>
>
>
>
>
>  -----Original Message-----
>
>  From: Bob Travis <bobtravis at comcast.net>
>
>  To: Personal Submersibles General Discussion
>  <personal_submersibles at psubs.org>
>
>  Sent: Tue, Dec 17, 2013 4:26 pm
>
>  Subject: Re: [PSUBS-MAILIST] VBT for K-350
>
>
>
>
>
>
>
>
>
>
>  Thanks for the input!!  I think I'm going to
>  try a stainless plug. I'll let you know how it
>  goes.
>
>
>
>  Sent from my iPhone
>
>
>
>  On Dec 17, 2013, at 6:58 AM, James Frankland <
> jamesf at guernseysubmarine.com>
>  wrote:
>
>
>
>
>
>
>  This has given me an idea.  Ive got loads of this
>  fluid film stuff.  Im tempted to pour some into the
>  tank to give it a bit of protection over the winter.
>  Might have to experiment with it a bit first to make sure
>  its not going to clog it up.
>
>
>
>
>
>
>  http://www.fluid-film.com/products/properties_liquida.html
>
>
>
>
>
>
>  On 17 December 2013
>  14:24, Jon Wallace <jonw at psubs.org>
>  wrote:
>
>
>
>
>  I highly encourage you to modify it.  The one piece of
>  the K600 that is obviously not useable is the VBT (identical
>  to the K-350).  The plug suggested by Dan is a good
>  option but with either an electric or hydraulic controlled
>  valve you could modify the inflow/outflow from the middle of
>  the end-cap to the bottom of the tank.  I also wonder
>  if instead of an FRP tank you could modify an AL-80 or
>  AL-100 scuba tank to perform the same function.
>   Unfortunately they are not large volume and would not
>  produce a lot of buoyancy.
>
>
>
>
>  Jon
>
>
>
>
>
>
>
>
>
>  On 12/17/2013 1:10 AM, Bob Travis wrote:
>
>
>  I'm
>  about ready to assemble my VBT and have noticed that there
>  will be about an inch of water left inside after it has been
>  fully blown.  I looked through the archives and
>  can't find any discussion about water remaining in the
>  tank. Is this a bad thing?  All the photos of all the
>  other K-350's that I've looked at don't have any
>  way of draining the last bit of water out of the tank. Can
>  anyone give me some advise here?  I don't like the
>  idea of water remaining in it long term.
>
>
>
>
>  Any advise would be greatly appreciated.
>
>
>
>  Thanks!
>
>
>
>  Bob
>
>  Sent from my iPhone
>
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