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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 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 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
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
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