Hi,

I've never found any paint to be worth the bother on props or shafts.

The only thing that's even worked for a little while is Lanolin grease
- like Lanocote from Forespar. Warm it up and paint it on with a brush.


There's a similiar product from NZ called Henley's Grease
http://www.bestmarineimports.com/Props.html .

I'm going to try it next year for no other reason than I gotta like a
guy who names a grease after himself.

I have no relation to either compay.

Carl

On Sun, 20 Nov 2005 23:00:22 -0400, Terry Spragg wrote:

Brian Whatcott wrote:
All you need is an exhalation valve at the mask, and an iron lung to
enable you to suck air below about 4 feet. Try it, just suck in
through the mouth using a harden hose and exhale through your nose.
Good luck.

Good Luck indeed, because if you go too far you are liable to have your
lungs being sucked up the hose is what I heard (not sure how deep is too
deep, anybody?)

Or a powered snorkel pump on a float on the surface, know as a
hooka, and some dive weights.

that works, I've done that..

--
http://maps.google.com/maps?q=irelan...244,0.0822&t=k

I haven't had much luck getting paint to stick to my props. Usually
only takes a couple of times out for it all to come off. I'm sure
there are systems out there that will work but you could always try
Boudreaux's Butt Paste. It works well for keeping the prop clean in
between uses. Of course someone has to go under to apply it, but it is
a cheap alternative.

As for staying underwater long enough to do this, I just spliced 50' of
air compressor hose between my primary and safe secondary regulators.
I can leave my tank on the back of the boat and dive under. If
anything goes wrong, I'm only 6' under water. I know the air
compressor hose is technically unsafe to breathe out of, but I've been
doing it for years with no ill effects.

Later,
Dan Schiro
M/V Sea Ranch

Iain Hibbert wrote:
On Sun, 20 Nov 2005 23:00:22 -0400, Terry Spragg wrote:


Brian Whatcott wrote:
All you need is an exhalation valve at the mask, and an iron lung to
enable you to suck air below about 4 feet. Try it, just suck in
through the mouth using a harden hose and exhale through your nose.
Good luck.


Good Luck indeed, because if you go too far you are liable to have your
lungs being sucked up the hose is what I heard (not sure how deep is too
deep, anybody?)
That's dumb. All that happens is the hose collapses from the pressure.
Nothing is going to push your lungs up the hose.......duh.


Or a powered snorkel pump on a float on the surface, know as a
hooka, and some dive weights.


that works, I've done that..

Well, then just sit on the bottom at the shallow end of the pool so
that your head is about a foot under water, your lungs about 2 feet
under. Then take a standard, one foot long snorkeling snorkel in your
mouth upside down, so that you can point it to the surface.
Try to inhale.
This won't suck up your lungs, but give you a good idea of the
principle.
That's why snorkels are so short, duh.
While you are in the pool take a thin garden hose to the deep end and
see at what pressure it collapses. Don't try to inhale through it, you
would just exhale quicker and deeper than you wanted.

"Gary" wrote in message
news:ixPgf.570915$oW2.460791@pd7tw1no...
Iain Hibbert wrote:

Good Luck indeed, because if you go too far you are liable to
have your
lungs being sucked up the hose is what I heard (not sure how
deep is too
deep, anybody?)
That's dumb. All that happens is the hose collapses from the
pressure. Nothing is going to push your lungs up the
hose.......duh.

What happens is that as you go deeper it becomes progressively
more difficult to breath in, because your lung pressure is at
atmospheric, whilst the water pressure is increasing at about half
a pound per square inch for each foot of depth. The 'squeeze' that
another poster has referred to. This limits me to a depth of about
4 - 5ft. Any deeper and I have a coughing fit after re-surfacing.
Apparently that's caused by bits of the lungs collapsing, and the
coughing is a reaction to the little subchambers unsticking again.
Nasty feeling.

That's another reason why I say - you don't do this without plenty
of previous practice in the swimming pool to check out the feeling
of all the things which may go wrong. Better just take that deep
breath . . . air breathing diving of any sort is full of traps for
the unwary.

JimB

News f2s wrote:
"Gary" wrote in message
news:ixPgf.570915$oW2.460791@pd7tw1no...

Iain Hibbert wrote:


Good Luck indeed, because if you go too far you are liable to
have your
lungs being sucked up the hose is what I heard (not sure how
deep is too
deep, anybody?)

That's dumb. All that happens is the hose collapses from the
pressure. Nothing is going to push your lungs up the
hose.......duh.


What happens is that as you go deeper it becomes progressively
more difficult to breath in, because your lung pressure is at
atmospheric, whilst the water pressure is increasing at about half
a pound per square inch for each foot of depth.
Duh! Of course if the hose is reinforced and more rigid than your chest
walls the you could get squeezed if you are not smart enough to hold
your breath.
The 'squeeze' that
another poster has referred to. This limits me to a depth of about
4 - 5ft. Any deeper and I have a coughing fit after re-surfacing.
Apparently that's caused by bits of the lungs collapsing, and the
coughing is a reaction to the little subchambers unsticking again.
Nasty feeling.
The air needs to be pumped down at the ambient pressure of your lungs.
After a couple feet *most* people can't suck hard enough to get air.
You might be the exception.

That's another reason why I say - you don't do this without plenty
of previous practice in the swimming pool to check out the feeling
of all the things which may go wrong. Better just take that deep
breath . . . air breathing diving of any sort is full of traps for
the unwary.
Good idea, nobody ever drowned in a swimming pool.

JimB

"News f2s" wrote in message
...

"Gary" wrote in message
news:ixPgf.570915$oW2.460791@pd7tw1no...
Iain Hibbert wrote:

Snip

That's another reason why I say - you don't do this without plenty of
previous practice in the swimming pool to check out the feeling of all the
things which may go wrong. Better just take that deep breath . . . air
breathing diving of any sort is full of traps for the unwary.

JimB


air breathing diving of any sort is full of traps for the unwary.

Reminds of the article in one of the recent Northwest Yachting magazinea
describing the fellow living on his Hinckley?/Hallber-Rasey? 46 in Costa
Rica. He became enamoured of free diving. Unfortunately one time he needed
to come up there was a big power boat overhead. He drowned. Seems like a
dumb way to lose a beautifull boat/life.

"Gordon Wedman" wrote:


"News f2s" wrote in message
...

"Gary" wrote in message
news:ixPgf.570915$oW2.460791@pd7tw1no...
Iain Hibbert wrote:

Snip

That's another reason why I say - you don't do this without plenty of
previous practice in the swimming pool to check out the feeling of all the
things which may go wrong. Better just take that deep breath . . . air
breathing diving of any sort is full of traps for the unwary.

JimB

air breathing diving of any sort is full of traps for the unwary.

Reminds of the article in one of the recent Northwest Yachting magazinea
describing the fellow living on his Hinckley?/Hallber-Rasey? 46 in Costa
Rica. He became enamoured of free diving. Unfortunately one time he needed
to come up there was a big power boat overhead. He drowned. Seems like a
dumb way to lose a beautifull boat/life.

Some people can do quite well free-diving. My SIL does this for the
lobster season in FL, and can stay down for a considerable time. Even
I can dive on the prop and do some work on it if I wear fins. It is
not that hard if you practice and it makes a reasonable workout. The
only time I can't do too much is if the water is cold - I can't stay
in too long in cold water, and if I wear a wet suit, I am too buoyant
to stay down.

It sounds to me like the guy in Costa Rica didn't have a dive flag or
take appropriate safety measures - like having someone watching.


grandma Rosalie

Dave wrote:

On Wed, 23 Nov 2005 21:12:09 GMT, Rosalie B.
said:

if I wear a wet suit, I am too buoyant
to stay down.

Everyone is. That's what weight belts are for.

But not when free diving.

grandma Rosalie