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Re: Ultra Ever Dry? Effect on foils? [Re: Tony_F18] #263463
09/10/13 08:12 AM
09/10/13 08:12 AM
Joined: Jun 2001
Posts: 890
Dunedin Causeway, FL
David Parker Offline
old hand
David Parker  Offline
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Joined: Jun 2001
Posts: 890
Dunedin Causeway, FL
If nothing to the coating,
HOW DOES THE COATING STICK TO SURFACES???

I often wonder how any non-stick is applied.

-- Have You Seen This? --
Re: Ultra Ever Dry? Effect on foils? [Re: bacho] #263488
09/10/13 02:20 PM
09/10/13 02:20 PM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
Carpal Tunnel
Jake  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 12,310
South Carolina
Originally Posted by bacho
I was in Home Depot today and saw a product that looked very similar. It was rust oleum never-wet. Seemed to have many of the same demonstrations and a similar color. It was $18 for 2 spray cans.


Rustoleum bought the rights to the stuff.


Jake Kohl
Re: Ultra Ever Dry? Effect on foils? [Re: Jake] #263489
09/10/13 02:30 PM
09/10/13 02:30 PM
Joined: Aug 2011
Posts: 774
Greenville SC
bacho Offline
old hand
bacho  Offline
old hand

Joined: Aug 2011
Posts: 774
Greenville SC
Originally Posted by Jake
Originally Posted by bacho
I was in Home Depot today and saw a product that looked very similar. It was rust oleum never-wet. Seemed to have many of the same demonstrations and a similar color. It was $18 for 2 spray cans.


Rustoleum bought the rights to the stuff.


Interesting, I may pick a pack up to experiment with.

Re: Ultra Ever Dry? Effect on foils? [Re: David Parker] #263492
09/10/13 02:42 PM
09/10/13 02:42 PM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
Carpal Tunnel
Jake  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 12,310
South Carolina
Originally Posted by David Parker
If nothing to the coating,
HOW DOES THE COATING STICK TO SURFACES???

I often wonder how any non-stick is applied.


Most non-stick coatings (nylon, teflon, etc.) are a powder coating/heat treating process.


Jake Kohl
Re: Ultra Ever Dry? Effect on foils? [Re: Jake] #263530
09/10/13 04:21 PM
09/10/13 04:21 PM
Joined: Dec 2001
Posts: 5,590
Naples, FL
waterbug_wpb Offline
Carpal Tunnel
waterbug_wpb  Offline
Carpal Tunnel

Joined: Dec 2001
Posts: 5,590
Naples, FL
if you apply a hydrophobic substance on foils, would that allow air to cause cavitation more quickly?


Jay

Re: Ultra Ever Dry? Effect on foils? [Re: waterbug_wpb] #263552
09/10/13 08:54 PM
09/10/13 08:54 PM
Joined: Jan 2004
Posts: 1,884
Detroit, MI
mbounds Offline
Pooh-Bah
mbounds  Offline
Pooh-Bah

Joined: Jan 2004
Posts: 1,884
Detroit, MI
Originally Posted by waterbug_wpb
if you apply a hydrophobic substance on foils, would that allow air to cause cavitation more quickly?

Air doesn't "cause" cavitation.

Cavitation results when the local pressure on the foil surface gets below the water vapor pressure and bubbles of water vapor form and explosively collapse - which is a real problem on propellers (the force can erode stainless steel). On catamaran foils - not so much, if ever.

What most people think of as "cavitation" is actually ventilation - the local foil pressure drops below the surface air pressure and draws air down from the free surface. And since air is 1000 times less dense than water, the foil loses it's lift.

A hydrophobic coating is probably going to promote the ventilation process, since the surface tension will create a natural crevice for the air to bleed down the foil. Wetting agents would have the opposite effect.

Re: Ultra Ever Dry? Effect on foils? [Re: mbounds] #263588
09/11/13 11:09 AM
09/11/13 11:09 AM
Joined: Dec 2001
Posts: 5,590
Naples, FL
waterbug_wpb Offline
Carpal Tunnel
waterbug_wpb  Offline
Carpal Tunnel

Joined: Dec 2001
Posts: 5,590
Naples, FL
my apologies... you are correct. I was referring to ventilation rather than cavitation


Jay

Re: Ultra Ever Dry? Effect on foils? [Re: waterbug_wpb] #263589
09/11/13 11:11 AM
09/11/13 11:11 AM
Joined: Jun 2001
Posts: 3,906
Clermont, FL, USA
David Ingram Offline
Carpal Tunnel
David Ingram  Offline
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Joined: Jun 2001
Posts: 3,906
Clermont, FL, USA
Originally Posted by waterbug_wpb
my apologies... you are correct. I was referring to ventilation rather than cavitation


SCHOOL'D!


David Ingram
F18 USA 242
http://www.solarwind.solar

"Do or do not. There is no try." - Yoda
"Excuses are the tools of the weak and incompetent" - Two sista's I overheard in the hall
"You don't have to be a brain surgeon to be a complete idiot, but it helps"
Re: Ultra Ever Dry? Effect on foils? [Re: David Ingram] #263591
09/11/13 11:16 AM
09/11/13 11:16 AM
Joined: Dec 2001
Posts: 5,590
Naples, FL
waterbug_wpb Offline
Carpal Tunnel
waterbug_wpb  Offline
Carpal Tunnel

Joined: Dec 2001
Posts: 5,590
Naples, FL
oh, like that's never happened to me before? smile

Every day I walk through the door I get school'd about SOMETHING...

until my evil master plan gets off the ground, that is....


Jay

Re: Ultra Ever Dry? Effect on foils? [Re: waterbug_wpb] #263950
09/16/13 02:28 PM
09/16/13 02:28 PM
Joined: Jun 2001
Posts: 733
Home is where the harness is.....
Will_R Offline
old hand
Will_R  Offline
old hand

Joined: Jun 2001
Posts: 733
Home is where the harness is.....
Originally Posted by waterbug_wpb
if you apply a hydrophobic substance on foils, would that allow air to cause cavitation more quickly?


Yup, you WANT water to stick to your hull and foils, but not just b/c of cavitation.

Re: Ultra Ever Dry? Effect on foils? [Re: Tony_F18] #283632
10/12/16 01:50 AM
10/12/16 01:50 AM
Joined: Sep 2016
Posts: 1
U
ULTRA EVER DRY Offline
stranger
ULTRA EVER DRY  Offline
stranger
U

Joined: Sep 2016
Posts: 1

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