Well,
I think you’ve got a few bits of advice and that is good for cementing your
thinking. Its Hard if you have no one to discuss a design with. Good
luck sounds as though you are progressing well. Hugh
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of kocpnt
tds.net
Sent: Thursday, 4 February 2010 10:37 a.m.
To:
personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST]
Lubrication
Hi Hugh,
Except for two (the exterior bellcrank on the skids to rotatr
the front thrusters) all the rest have a block V seal at the outer face of the
bore. The one without a seal has a stainless shaft thru the
center.
Sorry no drawings, it was pretty much design as we go! mI
know that's kind of old school, but it is what it is!!!
Best Regards,
Jim K
On Wed, Feb 3, 2010 at 2:10 PM, Hugh Fulton <hc.fulton@gmail.com>
wrote:
Jim, If you are able then I would have a
look at getting a seal of some sort to stop water getting into the bearing area
and/or filling it up with a waterpump grease. Some greases are better in
water than others. You are a corrosion man from recollection so you are probably
the best judge. Do you have drawings?
Hugh
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of
kocpnt tds.net
Sent:
Wednesday, 3 February 2010 11:06 p.m.
To: personal_submersibles@psubs.org
Subject: Re:
[PSUBS-MAILIST] Lubrication
Hi
Hugh,
I appreciate the
comments. With the exception of two shafts which are 1 1/4 in diameter, the rest
ate 1 inch in diameter. Clearance was originally about 3 thousandths of an inch,
however after welding and reaming I am sure it's a bit more.
This is my own
design for the most part, taking what I felt were the best of several designs
and applying it to my plans.
These parts and
weldments are already built, welded to the hull and painted, so unless there is
a compeling reason I will have to deal with them as they
are.
I am thinking of
Greg's liquid based parafin oil. Do you feel this would be better at controlling
corrosion in these bores?
Most are designed
to be easy to dissasemble for maintenance.
Best
Regards,
Jim
K
On Tue, Feb 2,
2010 at 11:36 PM, Hugh Fulton <hc.fulton@gmail.com> wrote:
Hi Jim,
Well if you have good clearance and you
had the bell crank galvanized then you wont have any problems but it would be
nice to see a cross section drawing of what you are proposing. Are you
following Kittredge drawings or is this a Jim version. Hard to pass a
comment without understanding the situation but you don’t want them to rust
together and find you cant turn them when you need them. You can get away
with a lot with good maintenance but maybe Vance can say what works best in that
situation. Chs, Hugh
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of
kocpnt tds.net
Sent:
Wednesday, 3 February 2010 12:39 p.m.
Subject: Re:
[PSUBS-MAILIST] Lubrication
Hi
Hugh,
These are not
rotating shafts. They are rotating bel cranks which actuate drop weight latches,
front and rear thruster orientation and soft ballast valves. Most only turn a 40
- 160 degrees.
Thank you for any
input.
Best
Regards,
Jim
K
On Tue, Feb 2,
2010 at 3:25 PM, Hugh Fulton <hc.fulton@gmail.com> wrote:
Hi Jim,
I would be very careful about steel to
steel. What is the application? What speed are the shafts
doing?
If you do go steel on steel then you
need to have different hardness and very good grease lubrication. Slow rotation
is not so bad but if you can use bronze, Aluminium, white-metal or plastic
sleeves then go for it. Stainless on bronze no problem, Chs,
Hugh
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of
kocpnt tds.net
Sent:
Wednesday, 3 February 2010 8:45 a.m.
To: personal_submersibles@psubs.org
Subject:
[PSUBS-MAILIST] Lubrication
Hi
All,
I've not seen this
before and am hoping for some expereinced people to help.
I am doing final
assembly of some rotating shafts. Some are carbon steel inside of carbon steel
and some are Stainless shaft inside of bronze bushings.
I am not sure if
never- seize or a good quality urea grease are better or possibly something that
I have not thought of!
Thanks in
advance,
Jim
K
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