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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 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 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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