Galvanic corrosion
 

On 5/21/2014 12:22 PM, Wayne.B wrote:
On Wed, 21 May 2014 11:26:31 -0400, wrote:

Nantucket may be one of the places where it could make sense though,
simply because they don't want a power plant on the shore either and
they still want the lights to come on when they flip the switch.
New power line right of way is as hard to come up with as power
plants.

===

Heh. Nantucket Sound makes a lot of sense because there is a lot of
wind there and so much fog that no one will see them on most days.

Nantucket Sound is the home of the infamous Figawi sailboat race -
humorously named for the mythical tribe of Figawi indians - who,
legend has it, went around in the fog saying: "Where the figawi?".

(say it slowly with a Boston accent)

Would make for interesting boating in the fog.

Galvanic corrosion
 

On 5/21/2014 1:07 PM, True North wrote:
Bingo.. Prize goes to Wayne.
I actually have three covers for my boat.
The winter Navigloo structure and heavy tarp that does a good job for the elongated late fall/winter/spring season.
The stem to stern travel/mooring additional accessory cover that uses some of the factory installed snaps and expects you to install half a dozen more both sides on the gunnels.
Lastly the stand up foul weather "canvas" meant to extend your boating season up here.
This cover and it's 4 extra panels are why a couple dozen male snaps are attached to the boat..along the gunnels, around the curved walk through wind shield, on the stern, etc.etc.


Lots of snaps really dresses up a boat.

Galvanic corrosion
 

On Wed, 21 May 2014 15:11:08 -0400, H*a*r*r*o*l*d
wrote:

On 5/21/2014 12:22 PM, Wayne.B wrote:
On Wed, 21 May 2014 11:26:31 -0400, wrote:

Nantucket may be one of the places where it could make sense though,
simply because they don't want a power plant on the shore either and
they still want the lights to come on when they flip the switch.
New power line right of way is as hard to come up with as power
plants.

===

Heh. Nantucket Sound makes a lot of sense because there is a lot of
wind there and so much fog that no one will see them on most days.

Nantucket Sound is the home of the infamous Figawi sailboat race -
humorously named for the mythical tribe of Figawi indians - who,
legend has it, went around in the fog saying: "Where the figawi?".

(say it slowly with a Boston accent)

Would make for interesting boating in the fog.

===

It's a very challenging place to sail what with the fog, high speed
ferries, shoals, large yachts, commercial fishing boats, strong
currents, etc. The windmills will be well marked and charted, as
well as being easily spotted on radar.

Galvanic corrosion
 

On Wed, 21 May 2014 15:32:17 -0400, H*a*r*r*o*l*d
wrote:

On 5/21/2014 1:07 PM, True North wrote:
Bingo.. Prize goes to Wayne.
I actually have three covers for my boat.
The winter Navigloo structure and heavy tarp that does a good job for the elongated late fall/winter/spring season.
The stem to stern travel/mooring additional accessory cover that uses some of the factory installed snaps and expects you to install half a dozen more both sides on the gunnels.
Lastly the stand up foul weather "canvas" meant to extend your boating season up here.
This cover and it's 4 extra panels are why a couple dozen male snaps are attached to the boat..along the gunnels, around the curved walk through wind shield, on the stern, etc.etc.


Lots of snaps really dresses up a boat.

===

Making it look snappy you say?

Galvanic corrosion
 

Poquito Loco wrote:
On Tue, 20 May 2014 07:09:56 -0700 (PDT), True North wrote:

John, the snaps were installed at the factory to support the standup
boat cover that you would use while underway.
This cover came as standard equipment with this boat.
I did order the optional stem to stern custom fit travel and summer
storage cover because Legend claimed you could trailer it down the
highway installed on the boat.

OK, but I'd still remove the snaps and fill the holes. I'd never trailer
a boat down the highway
with the cover on regardless of the manufacturer's claims.

Depends on the cover. I have towed my boat thousands of miles in 20 years,
with a snap on trailer cover. Top Gun material, and am on the 2nd cover
since the boat was new in 1991. Just towed 500 miles round trip to Shelter
Cove, CA last weekend. Great fishing. Lots of Rock Cod,mbyte only one
under sized salmon.

Galvanic corrosion
 

True North wrote:
Some of y'all seem to be forgetting that a major contributing factor is
the paint under the snaps.
The natural aluminum does a better job resisting.

Is not the paints fault. Is the aluminum that has electrolysis. Some
alloys, the 50xx, are much better at not corroding in salt water. Very
little copper content. Problem is the the 50xx and especially the 60xx
alloys do not bend and form as well as other alloys. So if you have nice
compound curves in the aluminum, may be a higher copper content alloy.

Galvanic corrosion
 

On 5/21/2014 3:51 PM, Wayne.B wrote:
On Wed, 21 May 2014 15:32:17 -0400, H*a*r*r*o*l*d
wrote:

On 5/21/2014 1:07 PM, True North wrote:
Bingo.. Prize goes to Wayne.
I actually have three covers for my boat.
The winter Navigloo structure and heavy tarp that does a good job for the elongated late fall/winter/spring season.
The stem to stern travel/mooring additional accessory cover that uses some of the factory installed snaps and expects you to install half a dozen more both sides on the gunnels.
Lastly the stand up foul weather "canvas" meant to extend your boating season up here.
This cover and it's 4 extra panels are why a couple dozen male snaps are attached to the boat..along the gunnels, around the curved walk through wind shield, on the stern, etc.etc.


Lots of snaps really dresses up a boat.

===

Making it look snappy you say?

You got it.;-)

Galvanic corrosion
 

I've been looking at a Site where it's claimed that the natural aluminum produces an oxide to protec it's self but the paint interferes with that process.
Anyway I'll let y'all experts debate that.
I dug out my 2012 Legend boat catalogue and it boasts of. 100" or 2.5mm thick 5052 H34 cold rolled aluminum on both hull and sides.
The nearest Canadian competition (Princecraft Holiday WC) uses H36 aluminum, .090 or 2.3mm on the hull and. 072 or 1.8mm on the sides.

Legend claims their's is stronger because it's both thicker and more flexible.
Princecraft claim their's is stronger because it's a harder metal.
I'll let the resident experts decided who's right...I believed Legend two years ago.

Galvanic corrosion
 

On 5/21/2014 7:15 PM, True North wrote:
I've been looking at a Site where it's claimed that the natural aluminum produces an oxide to protec it's self but the paint interferes with that process.
Anyway I'll let y'all experts debate that.
I dug out my 2012 Legend boat catalogue and it boasts of. 100" or 2.5mm thick 5052 H34 cold rolled aluminum on both hull and sides.
The nearest Canadian competition (Princecraft Holiday WC) uses H36 aluminum, .090 or 2.3mm on the hull and. 072 or 1.8mm on the sides.

Legend claims their's is stronger because it's both thicker and more flexible.
Princecraft claim their's is stronger because it's a harder metal.
I'll let the resident experts decided who's right...I believed Legend two years ago.


The paint has no affect on the oxidation process.

Freshly poured aluminum or freshly cut/machined aluminum forms a layer
of aluminum oxide about 50 angstroms thick within 15 minutes of being
exposed to air. The oxide development drops off rapidly after that.
Undisturbed and unaffected by environmental conditions it will take
years for any further oxidation to take place. The oxide layer seals
off the reaction to oxygen.

50 angstroms is about 0.00000019685 inches.

The early photoreceptor drums used in copying machines used the known
oxidation rate to determine a constant in the electrostatic discharge
that either held or repelled the toner. A photo sensitive coating on
the drum surface determined where the charge would stay and where it
would dissipate.

Before coating the aluminum drums were diamond turned on a lathe to
allow the oxide growth to begin and end. As mentioned, it only grows
to just about 50 angstroms and then drops off to nothing.

Galvanic corrosion
 

True North wrote:
I've been looking at a Site where it's claimed that the natural aluminum produces an oxide to protec it's self but the paint interferes with that process.
Anyway I'll let y'all experts debate that.
I dug out my 2012 Legend boat catalogue and it boasts of. 100" or 2.5mm thick 5052 H34 cold rolled aluminum on both hull and sides.
The nearest Canadian competition (Princecraft Holiday WC) uses H36 aluminum, .090 or 2.3mm on the hull and. 072 or 1.8mm on the sides.

Legend claims their's is stronger because it's both thicker and more flexible.
Princecraft claim their's is stronger because it's a harder metal.
I'll let the resident experts decided who's right...I believed Legend two years ago.

Spell check King, did you have a stroke?

protec it's self

their's is

WTF?