David,
Could not have said it better...some years back I cleaned out the old
stuffing and repacked and the stuffing box hardly drips...I have
checked it after an hour or more under motor and it is cool to the
touch. Also get more bilge water from rainmy paddlewhell and plug
water
David,
Could not have said it better...some years back I cleaned out the old
stuffing and repacked and the stuffing box hardly drips...I have checked
it after an hour or more under motor and it is cool to the touch. Also
get more bilge water from rainmy paddlewhell and plug water don't go
I get a lot more water in the bilge from rain and swapping plug and paddlewheel
than I do from the dripping shaft, so dripless is a non-issue for me. I
tightened up my stuffing box last year and since then dripping is almost
non-existent and the stuffing box is still cool under motor power.
I have owned 3 boats and completed 4 west coast to/from Hawaii crossings with
PSS shaft seals installed. Calypso has had hers since 1999.
I read of a specific failure caused by lack of maintenance where a boat sat for
many years allowing marine growth and corrosion to bond the SS and carbon
One of Touche' sisterships nearly sank when the engine compartment vent
hose dislodged and got wrapped around the prop shaft. It damaged the
dripless seal bellows. Fortunately, the owner was able to somehow seal the
bellows and save the boat.
I'm partial to traditional stuffing boxes myself.
--
Steve, Raw water intake is drawing water in by means of a pump...no such
mechanism is involved with a PSS seal. Bill Walker CnC 36Pentwater, Mi.
On Tuesday, July 13, 2021, 12:45:23 PM EDT, Steve Thomas via CnC-List
wrote:
Bob,
In the 20 years I've had my C, little bits of wood
Bob,
In the 20 years I've had my C, little bits of wood or
twigs have got sucked into the engine cooling water intake on several
occasions and lodged in unobvious places. They caused partial blockages
that were hard to diagnose and are memorable for that reason. Our
sailing club
Not to mention that this piece of wood had to drift through the shaft log and
the bellows before reaching the seal.
Marek
From: Robert Boyer via CnC-List
Sent: Tuesday, July 13, 2021 11:56 AM
To: Stus-List
Cc: Robert Boyer
Subject: Stus-List Re: PSS Stuffing Box
Fred:
I’ve never heard or
Maybe that’s what the owner told the insurance company.
From: Robert Boyer via CnC-List
Sent: Tuesday, July 13, 2021 11:56 AM
To: Stus-List
Cc: Robert Boyer
Subject: Stus-List Re: PSS Stuffing Box
Fred:
I’ve never heard or imagined anything so strange. First, the shaft seal is a
Fred:
I’ve never heard or imagined anything so strange. First, the shaft seal is a
good foot or more below the waterline. Pieces of wood generally float—so they
would normally be near the surface of the water. And then have a piece of wood
lodge between the stainless and graphite seal on
Years ago a small piece of wood came up thru the shaft log into the bellows and
wedged itself between the stainless and graphite rings. The boat sank
overnight.
The moral of this story is that you should periodically check the pressure of
the bellows.
My stainless ring had slipped.
Fred
A failure of the hose (or it’s clamps) that connects the stuffing box to the
boat would suck too!
I think there are a lot more things on a boat to worry about…
Bob Boyer
s/v Rainy Days
C Landfall 38 (Hull # 230)
(Spending winters in warm places, and summers on the Chesapeake Bay)
blog:
Because I’ll sleep better at night. The PSS is a nice system .. used it
for years. However .. a system failure would suck.
On Mon, Jul 12, 2021 at 9:27 PM Doug Mountjoy
wrote:
> Why would you want to?
>
>
>
> Sent from my T-Mobile 4G LTE Device
>
> Doug Mountjoy
> Port Orchard YC
> Port
Jeff,
As you mentioned earlier, this topic shows up every so often.
As a PSS user, I am obviously biased.
The stuck graphite face was an issue in older designs (the unvented type). The
Volvo version of the dripless seal still requires burping.
I can imagine that if I were to sail around the
Let's exclude power boats -- an entirely different environment and demand on
the hardware.
Jeff L.
From: WILLIAM WALKER via CnC-List
Sent: Tuesday, July 13, 2021 8:49 AM
To: Steve Thomas via CnC-List
Cc: WILLIAM WALKER
Subject: Stus-List Re: Stuffing Box
I
I have had PSS droplets on two boats for over 20 years with absolutely no
issues. I wonder if failure related to fact it was power boat with more hours
of turning shaft at higher rpms and maybe not sufficient cooling?In the end,
it's what let's you sleep at night that's important.Bill Walker
The power boat that was docked next to me at a marina in Florida
experienced such a failure. I was there when it happened. The owner
knocked on my boat and wanted a portable water pump if I had one. Long
story short, water came in faster than the bilge pumps could get it out
and he got an
I think you mean halyard “restrainer.”
From: ALAN BERGEN via CnC-List
Sent: Tuesday, July 13, 2021 12:27 AM
To: Stus-List
Cc: ALAN BERGEN
Subject: Stus-List Re: Old Harken Roller II
The fitting you are referring to is called a retainer. It is required on many
boats with furler, if
Steve,
You likely would want a Buck Algonquin packing box. Model # B/A 00PB113 is for
a 1-1/8” shaft and comes in 3 versions with the proper Buck Algonquin hose
different tube sizes 1-3/4”, 2”, 2-1/4". It uses 3/16” packing, and I highly
recommend using GFO marine shaft packing. See links
Hello all,
From time to time this discussion of stuffing box vs PSS dripless comes up and
catastrophic failure is typically mentioned.
Has anyone on this list experienced a PSS catastrophic failure (that is the
fault of PSS) or have direct knowledge of someone who did?
Installed PSS 4 years
I’ve had a PSS shaft seal for our long time on our LF38 with no problems except
when a shaft key broke and allowed the shaft to slip. However, the same thing
could have happened with packing. I would never consider going back to packing.
Bob
Bob Boyer
s/v Rainy Days
C Landfall 38 (Hull #
+1 on that; though I have mine for only 9 years.
Marek
1994 #122 ”Legato”
Ottawa, ON
From: ssjohnson via CnC-List
Sent: Monday, July 12, 2021 11:10 PM
To: Stus-List
Cc: ssjohnson
Subject: Stus-List Re: Stuffing Box
I've had a PSS shafted, and a DRY bilge for 10 years...think it is great.
One reason might be that PSS systems have a catastrophic failure mode
that can result in flooding when the graphite shatters.
I second the Buck Algonquin recommendation. I used conventional packing
with teflon grease.
Steve Thomas
C MKIII - 1978
C MKI - 1980
-- Original Message --
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