Ceramic pump seals--don't know which one, but it shouldn't be all that hard to find. Did you ask Crane's tech staff? Vance
Vance, what was it they'd done to those Minnkotas again? I remember they'd
replaced the lip seals on the shaft, but was it with ceramic seals? Because if
they go to 1,200 feet, I'm interested!
I'm been spending way too much time trying to source ceramic seals. There is a
ubiquitous and cheap seal from John Crane called a Type 21, which in the MSC
catalog is listed as "650 psi balanced / 250 psi unbalanced". Now, all my
research so far indicates that whether a mechanical seal is balanced or not
depends on the shape of the seal, and they offer only one shape, so I don't know
what MSC is talking about.
John Crane claims only the 250 psi figure, and their seals for 500 psi cost
about 20 times as much.
thanks,
Alec
________________________________
From: owner-personal_submersibles@psubs.org on behalf of Joseph Perkel
Sent: Thu 3/8/2007 9:05 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Great link page
Vance,
The Minn Kotas are impressive!...I've seen enough now to stop worrying about
thrusters.
Nice photos of PC 1401. Of real interest to me are the saddle tanks (appears to
be welded sheet metal), and the forward view port.
>From what I can see so far, for my boat, the fore and aft MBT's along with the
fairings, can be standard mold / plug / glass construction. But the saddle tanks
have a shape more conducive to sheet over frames.
So my question to you is, what gauge sheet do you suppose this is, and what
should the interior surfaces be coated with? Once sealed, these would not be
opened again.
Joe
________________________________
From: vbra676539@aol.com
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Great link page
Date: Wed, 07 Mar 2007 15:36:12 -0500
Re: 1401. Do you guys remember the discussion we had about Minn-Kota
thrusters modified to sustain up to 1200 feet without compensation? Well, there
they are. Vance
-----Original Message-----
From: MerlinSub@t-online.de
To: personal_submersibles@psubs.org
Sent: Wed, 7 Mar 2007 3:28 PM
Subject: [PSUBS-MAILIST] Great link page
http://www.modell-u-boote.de/links/links_originale/links_originale.html
http://www.modell-u-boote.de/originale/perry_1401/perry.html
http://www.modell-u-boote.de/originale/marder/marder.html
http://www.modell-u-boote.de/originale/holland/holland.html
regards Carsten
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 53
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************
________________________________
AOL now offers free email to everyone. Find out more about what's free from
AOL at AOL.com <http://pr.atwola.com/promoclk/1615326657x4311227241x4298082137/aol?redir=http://www.aol.com>
.
************************************************************************
************************************************************************
************************************************************************ The
personal submersibles mailing list complies with the US Federal CAN-SPAM Act of
2003. Your email address appears in our database because either you, or someone
you know, requested you receive messages from our organization. If you want to
be removed from this mailing list simply click on the link below or send a blank
email message to: removeme-personal_submersibles@psubs.org Removal of your email
address from this mailing list occurs by an automated process and should be
complete within five minutes of our server receiving your request. PSUBS.ORG PO
Box 53 Weare, NH 03281 603-529-1100 ************************************************************************
************************************************************************
************************************************************************
The contents of this e-mail are intended for the named addressee only. It
contains information that may be confidential. Unless you are the named
addressee or an authorized designee, you may not copy or use it, or disclose it
to anyone else. If you received it in error please notify us immediately and
then destroy it.