NotCook
.
- Dec 29, 2008
- 805
That was exactly what I was thinking. I know most of the paints I have seen say NOT to paint over the transducers with it.
Do you paint the depth transduceer?
- Thread starter markwbird
- Start date
NotCook
.
- Dec 29, 2008
- 805
If you don't paint it how do you prevent barnacles and oysters from making it their home? A quick search of past forums on the subject on Google revealed an interesting comment "if antifouling paint attacks plastic a bigger problem is the hull is made from plastic." Other comments suggest not to use "ketone based paint" but that water base and other solvents are acceptable.
Here's directly from the Airmar website, the company that makes transducers http://www.airmartechnology.com/uploads/InstallGuide/17-355-01.pdf "
Anti-fouling Paint
Surfaces exposed to salt water must be coated with anti-fouling
paint. Use water-based anti-fouling paint only. Never use ketonebased
paint, since ketones can attack many plastics possibly
damaging the multisensor.
It is easier to apply anti-fouling paint before installation, but allow
sufficient drying time. Reapply paint every 6 months or at the
beginning of each boating season. Paint the following surfaces
(Figure 2):
• Outside wall of the insert below the lower O-ring
• Paddlewheel cavity
• Paddlewheel
• Exposed end of the insert
• Exterior flange of the housing
• Bore of the housing up 30mm (1-1/4")
• Blanking plug below the lower O-ring including the exposed end
Here's directly from the Airmar website, the company that makes transducers http://www.airmartechnology.com/uploads/InstallGuide/17-355-01.pdf "
Anti-fouling Paint
Surfaces exposed to salt water must be coated with anti-fouling
paint. Use water-based anti-fouling paint only. Never use ketonebased
paint, since ketones can attack many plastics possibly
damaging the multisensor.
It is easier to apply anti-fouling paint before installation, but allow
sufficient drying time. Reapply paint every 6 months or at the
beginning of each boating season. Paint the following surfaces
(Figure 2):
• Outside wall of the insert below the lower O-ring
• Paddlewheel cavity
• Paddlewheel
• Exposed end of the insert
• Exterior flange of the housing
• Bore of the housing up 30mm (1-1/4")
• Blanking plug below the lower O-ring including the exposed end
I have a different perspective on that:
Why would you even use transducer paint if it doesn't have antifouling properties?
I think marketing is the reason it's in a different name and container. They can sell a small container for a high $ per ounce.
Transducer paint is antifouling paint. That is the whole point. It is different because it is water based. Petroleum based paint will attack the plastic in a plastic transducer. This is all explained in the transducer installation instructions. MDR 720 is the paint that I see recommended the most. The problem is that it has copper in it. Copper is not allowed in California.
[QUOTE="Larry -- ]I... Why would you even use transducer paint if it doesn't have antifouling properties?
OH, but it does, but just not like "antifouling" the people are led to believe would be a high-copper or such content. Some who do not know better have been known to use "regular" anti-fouling on transducers, then complain their readings are out of whack- and you have to speak to them. Old salts know better.
OH, but it does, but just not like "antifouling" the people are led to believe would be a high-copper or such content. Some who do not know better have been known to use "regular" anti-fouling on transducers, then complain their readings are out of whack- and you have to speak to them. Old salts know better.
No problem. Sneak across into Quebec first and then over to B.C. They'll never notice another frog in Quebec.
Apologies to all Quebec members on the site. We know you call us pot heads but we still luv ya.
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Old salts who drank the marketing koolaid.
Copper based bottom paint does NOT affect depth readings, applied in normal coating thickness.
"Copper based bottom paint does NOT affect depth readings, applied in normal coating thickness."
Copper is not the solvent of the paint base it is the base of the anti fouling protection. The shape of the transducer may be changed if anti fouling protection is applied to the transducer using a solvent based material. That would also be true if the transducer was wiped with any solvent while prepping the adjacent hull. How well I remember all of that sanding after painting my bike with the newer/better acetone paint over the old factory oil based paint and finding all those new wrinkles. Permeability and porosity vary between the cured surface of different paint types.
Copper is not the solvent of the paint base it is the base of the anti fouling protection. The shape of the transducer may be changed if anti fouling protection is applied to the transducer using a solvent based material. That would also be true if the transducer was wiped with any solvent while prepping the adjacent hull. How well I remember all of that sanding after painting my bike with the newer/better acetone paint over the old factory oil based paint and finding all those new wrinkles. Permeability and porosity vary between the cured surface of different paint types.
