Brian,
Yes- larger oil filled systems like
battery housings usually use the rubber bellows made for brake systems on big
trucks as pressure compensation devise.
Greg
-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian Cox
Sent: Thursday, March 05, 2009
11:27 AM
To:
personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST]
Problems with initial
So I asume it could also
be used to surround and submerge the batteries in it.
-----Original
Message-----
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]On
Behalf Of Greg Cottrell
Sent: Thursday, March 05, 2009
8:02 AM
To:
personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST]
Problems with initial
Hi Brian,
Lot’s of light oils
will work. I used baby oil for a long time. Transformer oil is good. When WD-40
was invented, the company used to advertise it with electric motors running
completely submerged in aquariums full of the stuff! It conducts away heat and
lubricates. Some oils work great in the motor but attack the potting compounds
used to seal the wire. It’s also better to choose oil that would do less
damage to the environment is it ever leaked out. A sub surrounded by a huge oil
slick is not cool! Some commercial subs use glycol in their manipulators for
that reason instead of hydraulic fluid.
Greg
-----Original Message-----
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian Cox
Sent: Thursday, March 05, 2009
10:40 AM
To:
personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST]
Problems with initial
WD-40 ! I would never have thought of that. Do you know how that
compares with a light mineral oil or di-electric oil?
-----Original
Message-----
From:
owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On Behalf Of Greg Cottrell
Sent: Thursday, March 05, 2009
7:25 AM
To:
personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST]
Problems with initial
Hi
Vance,
I’ve
always filled the motors with light oil and forgot about them. I just drill/
tap the motor housing for a pair of small barb fittings and connect them with a
loop of clear tubing (make sure you get tube that stays flexible in cold
water). The oil with travel through stranded wire so you’ll also have to
strip the insulation back on a small spot, solder a small area and then pot the
wire with a urethane or epoxy compound. As for the oil, WD-40 works great- It
displaces water and won’t attack electric insulation or rubber seals.
There’s always talk on the internet about fear of metal shavings getting
in the oil but as far as I can see you just get a little suspended carbon and
it doesn’t seem to have any effect on how the motors run.
Greg
-----Original Message-----
From:
owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]
On Behalf Of vbra676539@aol.com
Sent: Wednesday, March 04, 2009
10:42 PM
To:
personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST]
Problems with initial
Hey
Greg,
The K350 is pretty close to ready for sandblast and paint, then it's down to
wiring. Probably all summer to get it hung back together, what with all the
rebuilds, including the thrusters. I'm still hemming and hawing about the
Minn-Kota package. Carsten and Emile are working up some stuff on installing
spring loaded ceramic seals on trolling motors, which works well on the
Minn-Kotas, but I'm running out of time here and may just go ahead and whack
everything back together rather than reinvent the wheel. This one I've got has
the 3hp aft thruster, which is a pain as it is direct drive and runs a small
prop, but hey, it's already on the shelf, so why not use it? Then the second
boat will get the Minn-Kotas. That one is the 1000' hull with big windows.
Vance
-----Original Message-----
From: Greg Cottrell <greg@precisionplastics.com>
To: personal_submersibles@psubs.org
Sent: Wed, 4 Mar 2009 5:13 pm
Subject: RE: [PSUBS-MAILIST] Problems with initial
How is
your boat coming along?
Scott,
The plans specify all dimensions and measurements for metal on the boat. Each
sheet has a materials list. Or at least every sheet I have ever seen. You
shouldn't have to be taking anything off the print with a ruler.
Vance
-----Original Message-----
From: Scott Waters <muddywatersfarm@hotmail.com>
To: New Message <personal_submersibles@psubs.org>
Sent: Wed, 4 Mar 2009 12:06 pm
Subject: [PSUBS-MAILIST] Problems with initial
I am trying to get all of m y metal ordered for the
main part of the sub (k-350). I am having a real hard time gauging the
blueprints. I was wondering if anyone had a list of measurements. I am going to
order the main vessle and ribs, two battery pods, conning tower and hatch, and
VBT. I can't seem to get the plans to scale because they have been saved
in PDF and were compacted before they were saved and they have no
measurement scale except 1/4" equals 1' which doesn't help if the files have
been compacted. HELP?
Thanks,
Scott Waters
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