Doug, you're comment made me think of an interesting
possibility. I'm using some custom-order seals from Parker called "Flexiseals".
They're rated to 10,000 psi and to high shaft-feet-per-minute velocities, but
essentially they're just lip seals with extraordinary engineering and materials.
The catalog is here: http://www.macroseal.com/pdf/Parker%20Rotary%20Seals.pdf
Because there's such a huge number of possible combinations
of materials, shapes, and dimensions, Parker custom builds the seals to order.
But it isn't that expensive. For a one inch shaft, which obviously is much
bigger than a trolling motor, these Flexiseals cost about $250 -- for a
production batch of five which is the minimum order quantity. So $50 per
seal, probably less on smaller ones. You just have to wait a month or so to get
them after placing the order.
It would be interesting if someone wanted to do the legwork
and find out whether a Flexiseal could be ordered that would be a
direct replacement for ordinary trolling motor lip
seals.
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It tis a shame, because they are
made right here in Tulsa. I've even been over and talked to the guys and
the factory.
But check this out; Lenco uses MotorGuide motors for
this system:
http://www.youtube.com/watch?v=w6xfglrow6A
If you replaced the shaft seals with
better quality lip seals you would have an off-the-shelf dual thruster control
system including dive plan controls.
Best of
Luck
Doug
SubmarineBoat.com
-----Original Message-----
From: James Frankland
<james@guernseysubmarine.com>
To:
personal_submersibles@psubs.org
Sent: Thu, Jun 18, 2009 9:18 am
Subject:
Re: [PSUBS-MAILIST] Minn Kota V Motor Guide
Doug
I called them and your right. Im going with the Minn Kota, thanks.
Also, good pics on your website, id not seen those before, very usefull.
Regards
James
----- Original Message -----
From: djackson99@aol.com [mailto:djackson99@aol.com]
To: personal_submersibles@psubs.org
Sent: Wed, 17 Jun 2009 19:07:51 -0400
Subject: Re: [PSUBS-MAILIST] Minn Kota V Motor Guide
Motor Guide's have the electronics in the head, so don't go with them if you
plan to pressure compensate them.
I have details of my 2 thruster controller on my web site.
Best of Luck
Doug J
SubmarineBoat.com