On Jul 28, 4:24*pm, JimH wrote:
On Jul 28, 4:20*pm, hk wrote:





Chuck wrote:
I know... I only post when I have a problem. *This happened two weeks
ago. The bolt on the front outer piling holding the boat lift cradle
pulley sheared right off and the boat went in the drink. *Photos of the
boat, the bolts, and some telltale corrosion streaks are stored at the
links below.

http://www.thespaceexplorers.com/cor...lts3.jpg*(boat in water)

http://www.thespaceexplorers.com/cor...olts1.jpg*(3/4 galv. bolts corroded
away to nothing)

http://www.thespaceexplorers.com/cor...2.jpg(boltrust stains on pulley
housing)

OK. *So my question is.......... is there any way to diagnose a
galvanized bolts integrity before it rusts through like this again? * I
can't seem to find my portable X-ray machine. * I also can't quite
figure out how to do a simple swapout on the other three. *I don't know
anybody who swaps their lift bolts out every few years!

Chuck

Since apparently no one was injured, the important questions:

Was the boat damaged? Will your insurance cover any damages to the boat
or the lift?

Maybe you need to check the area for stray electrical currents...and
also change all the bolts and use nuts and bolts you can swap out every
season.

I have seen bolts looking like that taken off a wooden roller coaster
being restored. *A friend of mine was helping with the restoration.
In this case constant friction and tension was the problem.

As a side note: *Chuck, no offense but I can understand why you posted
the question here and not at your place. *;-)- Hide quoted text -

- Show quoted text -

Tell us, if constant tension was the problem, as you say, why? Was
every bolt in tension beyond it's design strength? Exactly what
happened to the bolt because of tension?

On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. This happened two weeks ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat, the
bolts, and some telltale corrosion streaks are stored at the links below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded away
to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley
housing)

OK. So my question is.......... is there any way to diagnose a galvanized
bolts integrity before it rusts through like this again? I can't seem to
find my portable X-ray machine. I also can't quite figure out how to do a
simple swapout on the other three. I don't know anybody who swaps their
lift bolts out every few years!

Chuck

I'd be putting stainless steel bolts in there as fast as I could. If you
can't unscrew the nut, then a hammer and chisel may be an alternative.
Another alternative may be a grinder.

On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. This happened two weeks ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat, the
bolts, and some telltale corrosion streaks are stored at the links below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded away
to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley
housing)

OK. So my question is.......... is there any way to diagnose a galvanized
bolts integrity before it rusts through like this again? I can't seem to
find my portable X-ray machine. I also can't quite figure out how to do a
simple swapout on the other three. I don't know anybody who swaps their
lift bolts out every few years!

I'm probably wrong, but that looks like electrolysis. Which means
that you have some kind of current leakage somewhere - maybe from a
shore charger?

Is your boat isolated from shore side current?

"Short Wave Sportfishing" wrote in message
...
On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. This happened two weeks ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat, the
bolts, and some telltale corrosion streaks are stored at the links below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded
away
to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley
housing)

OK. So my question is.......... is there any way to diagnose a galvanized
bolts integrity before it rusts through like this again? I can't seem to
find my portable X-ray machine. I also can't quite figure out how to do
a
simple swapout on the other three. I don't know anybody who swaps their
lift bolts out every few years!

I'm probably wrong, but that looks like electrolysis. Which means
that you have some kind of current leakage somewhere - maybe from a
shore charger?

Is your boat isolated from shore side current?

How about adding some zincs?

On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill"
wrote:


"Short Wave Sportfishing" wrote in message
.. .
On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. This happened two weeks ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat, the
bolts, and some telltale corrosion streaks are stored at the links below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded
away
to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley
housing)

OK. So my question is.......... is there any way to diagnose a galvanized
bolts integrity before it rusts through like this again? I can't seem to
find my portable X-ray machine. I also can't quite figure out how to do
a
simple swapout on the other three. I don't know anybody who swaps their
lift bolts out every few years!

I'm probably wrong, but that looks like electrolysis. Which means
that you have some kind of current leakage somewhere - maybe from a
shore charger?

Is your boat isolated from shore side current?

How about adding some zincs?

These are galvanized bolts. Adding zinc to zinc will accomplish
little.

Casady

"Richard Casady" wrote in message
...
On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill"
wrote:


"Short Wave Sportfishing" wrote in message
. ..
On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. This happened two weeks
ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat,
the
bolts, and some telltale corrosion streaks are stored at the links
below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded
away
to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley
housing)

OK. So my question is.......... is there any way to diagnose a
galvanized
bolts integrity before it rusts through like this again? I can't seem
to
find my portable X-ray machine. I also can't quite figure out how to
do
a
simple swapout on the other three. I don't know anybody who swaps their
lift bolts out every few years!

I'm probably wrong, but that looks like electrolysis. Which means
that you have some kind of current leakage somewhere - maybe from a
shore charger?

Is your boat isolated from shore side current?

How about adding some zincs?

These are galvanized bolts. Adding zinc to zinc will accomplish
little.

Casady

The zinc on those bolts was long gone.

"Calif Bill" wrote in message
m...

"Richard Casady" wrote in message
...
On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill"
wrote:


"Short Wave Sportfishing" wrote in message
...
On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. This happened two weeks
ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat,
the
bolts, and some telltale corrosion streaks are stored at the links
below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded
away
to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on
pulley
housing)

OK. So my question is.......... is there any way to diagnose a
galvanized
bolts integrity before it rusts through like this again? I can't seem
to
find my portable X-ray machine. I also can't quite figure out how to
do
a
simple swapout on the other three. I don't know anybody who swaps
their
lift bolts out every few years!

I'm probably wrong, but that looks like electrolysis. Which means
that you have some kind of current leakage somewhere - maybe from a
shore charger?

Is your boat isolated from shore side current?

How about adding some zincs?

These are galvanized bolts. Adding zinc to zinc will accomplish
little.

Casady

The zinc on those bolts was long gone.


So.... the zinc is just a coating and not mixed into the steel bolts?

On Jul 30, 6:47*pm, "Calif Bill" wrote:
"Richard Casady" wrote in message

...





On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill"
wrote:

"Short Wave Sportfishing" wrote in message
. ..
On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. *This happened two weeks
ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. *Photos of the boat,
the
bolts, and some telltale corrosion streaks are stored at the links
below.

http://www.thespaceexplorers.com/cor...lts3.jpg*(boat in water)

http://www.thespaceexplorers.com/cor...olts1.jpg*(3/4 galv. bolts corroded
away
to nothing)

http://www.thespaceexplorers.com/cor...olts2.jpg(bolt rust stains on pulley
housing)

OK. *So my question is.......... is there any way to diagnose a
galvanized
bolts integrity before it rusts through like this again? * I can't seem
to
find my portable X-ray machine. * I also can't quite figure out how to
do
a
simple swapout on the other three. *I don't know anybody who swaps their
lift bolts out every few years!

I'm probably wrong, but that looks like electrolysis. *Which means
that you have some kind of current leakage somewhere - maybe from a
shore charger?

Is your boat isolated from shore side current?

How about adding some zincs?

These are galvanized bolts. Adding zinc to zinc will accomplish
little.

Casady

The zinc on those bolts was long gone.- Hide quoted text -

- Show quoted text -

Happy bday, a day late if that was you they noted...

On Wed, 30 Jul 2008 15:47:42 -0700, "Calif Bill"
wrote:


"Richard Casady" wrote in message
. ..
On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill"
wrote:


"Short Wave Sportfishing" wrote in message
...
On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote:

I know... I only post when I have a problem. This happened two weeks
ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat,
the
bolts, and some telltale corrosion streaks are stored at the links
below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded
away
to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley
housing)

OK. So my question is.......... is there any way to diagnose a
galvanized
bolts integrity before it rusts through like this again? I can't seem
to
find my portable X-ray machine. I also can't quite figure out how to
do
a
simple swapout on the other three. I don't know anybody who swaps their
lift bolts out every few years!

I'm probably wrong, but that looks like electrolysis. Which means
that you have some kind of current leakage somewhere - maybe from a
shore charger?

Is your boat isolated from shore side current?

How about adding some zincs?

These are galvanized bolts. Adding zinc to zinc will accomplish
little.

Casady

The zinc on those bolts was long gone.

OK. Although I would think that simply rplacing the bolts woild be
cheaper and easier than adding zincs.

Casady

"Chuck" wrote in message
news:GMpjk.273665$yE1.249046@attbi_s21...
I know... I only post when I have a problem. This happened two weeks ago.
The bolt on the front outer piling holding the boat lift cradle pulley
sheared right off and the boat went in the drink. Photos of the boat, the
bolts, and some telltale corrosion streaks are stored at the links below.

www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water)

www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded
away to nothing)

www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley
housing)

OK. So my question is.......... is there any way to diagnose a galvanized
bolts integrity before it rusts through like this again? I can't seem to
find my portable X-ray machine. I also can't quite figure out how to do
a simple swapout on the other three. I don't know anybody who swaps their
lift bolts out every few years!

Chuck



Salt water or fresh?

Eisboch