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Old 10-18-2020, 01:28 PM   #1
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Tomorrow boat is getting hauled.

Do you normally paint all the running gear?
Right now there is no paint on shaft, prop or rudder. This is the majority of my monthly scrapping. If you do paint does it need a primer? Stainless and bronze?
This is our first haul out. Any things to watch out for would be greatly appreciated.
Paul
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Old 10-18-2020, 02:16 PM   #2
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We donít paint our running gear but it has lots of old paint on it and we are in fresh water so the circumstances are way different. I would check the bottom immediately after hauling to check for blisters. Hopefully you wonít have any but if you let the boat dry out for a while they tend shrink back and be less noticeable.
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Old 10-18-2020, 02:53 PM   #3
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There is plenty of talk here, including a few hundred words on the subject by yours truly, in the archives. Bottom line, coat the running gear with your choice of anti-fouling stuff.
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Old 10-18-2020, 03:09 PM   #4
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Before painting underwater metal, check for incompatibilities. For example, it is usually not recommended to paint copper based anti fouling directly on metal (like rudders). There are metal specific paints (like Trilux) or you can undercoat with a barrier such as Interprotect then use the regular anti fouling. You are trying to avoid any "reaction" between the metal of the rudder and the copper in the anti fouling. So, it also depends on what anti fouling you would be using. Growth around my area is much less than in say Florida. Many around here use a zinc based paint on the prop and running gear. The downside, it only lasts (less than) a year, but it does slow down growth while it lasts. Some use an expensive product called "prop speed" but that also requires a very specific application method. Some users rave about this product, some say not worth it.

Other things to check are: play in your prop shaft (condition of cutlass bearing), visual of prop looking for any damage or dezincification, checking,cleaning, and lubing through hulls, servicing bow thruster (stern if have), clean, polish, and wax hull, and of course, repainting the anti fouling as needed.

Depending on your boat and it's systems , there may be more to do and check, but that is a start and applies to a lot of boats.
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Old 10-18-2020, 03:13 PM   #5
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If you don’t paint it with anti fouling in Florida you will have 1/2” thick barnacles in 6 weeks.
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Old 10-18-2020, 03:18 PM   #6
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A plan that works somewhat is to use Interprotect epoxy primer as it sticks well, then add an Interlux bottom paint that is compatible before the primer is fully cured for an additional bond.

I have done it both ways and it seems the antifouling wears off rather than not bonding. But the Interprotect is usually recommended by yards that obviously have more experience than me, but also the desire for more work and sales. Take your pick.
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Old 10-18-2020, 03:30 PM   #7
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How long has it been since the last haul out?

Paint the rudder and prop. Never heard of nor have I ever painted the shaft.

Change the zincs on the shaft a rudder and zincs on the thrusters too.
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Old 10-18-2020, 03:46 PM   #8
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Quote:
Originally Posted by High Wire View Post
If you donít paint it with anti fouling in Florida you will have 1/2Ē thick barnacles in 6 weeks.
I am in FL, use unit-fouling paint and have a diver clean the hull once a month. No real build up of barnacles on the hull and running gear but dont want them a chance. Make sure the through hull opening are clear.
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Old 10-18-2020, 03:55 PM   #9
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Quote:
Originally Posted by firehoser75 View Post
Before painting underwater metal, check for incompatibilities. For example, it is usually not recommended to paint copper based anti fouling directly on metal (like rudders). There are metal specific paints (like Trilux) or you can undercoat with a barrier such as Interprotect then use the regular anti fouling. You are trying to avoid any "reaction" between the metal of the rudder and the copper in the anti fouling. So, it also depends on what anti fouling you would be using. Growth around my area is much less than in say Florida. Many around here use a zinc based paint on the prop and running gear. The downside, it only lasts (less than) a year, but it does slow down growth while it lasts. Some use an expensive product called "prop speed" but that also requires a very specific application method. Some users rave about this product, some say not worth it.

Other things to check are: play in your prop shaft (condition of cutlass bearing), visual of prop looking for any damage or dezincification, checking,cleaning, and lubing through hulls, servicing bow thruster (stern if have), clean, polish, and wax hull, and of course, repainting the anti fouling as needed.

Depending on your boat and it's systems , there may be more to do and check, but that is a start and applies to a lot of boats.
lubing through hulls
Never heard of that. How's it work?
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Old 10-18-2020, 04:07 PM   #10
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Quote:
Originally Posted by rgano View Post
There is plenty of talk here, including a few hundred words on the subject by yours truly, in the archives. Bottom line, coat the running gear with your choice of anti-fouling stuff.
Okay. Another question. Do I need to prime ss shaft or bronze prop or rudder?
My choice of anti fouling straight on the bare metal?
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Old 10-18-2020, 04:14 PM   #11
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Quote:
Originally Posted by Pmcsurf1 View Post
Okay. Another question. Do I need to prime ss shaft or bronze prop or rudder?
My choice of anti fouling straight on the bare metal?
I do not prime when using Interlux ACT. I take it down bare with a wire wheel in the yard each year. There is no corrosion or pitting on the SS rudder, and shaft or on the bronze prop.
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Old 10-18-2020, 04:15 PM   #12
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Originally Posted by Pmcsurf1 View Post
lubing through hulls
Never heard of that. How's it work?
When the boat is out of the water, inspect the hull valves, you should find a plug on the side of the hull valves. Remove the plug, insert the adapter and grease gun, a few squirt of a special grease while cycling the hull valves, remove the adapter, reinstall the plugs.
OR
have the yard service the hull valves.
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Old 10-18-2020, 04:23 PM   #13
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Quote:
Originally Posted by Pmcsurf1 View Post
Okay. Another question. Do I need to prime ss shaft or bronze prop or rudder?
My choice of anti fouling straight on the bare metal?
See post #6.

The vast majority of rudders, props and shafts are bronze or stainless or a combo that are more noble than copper. Copper paint harms neither that I recall in the 55 years I have seen both painted without primer.

It it was an issue, there would be BIG warnings on the can.

Aluminum props, different story.
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Old 10-18-2020, 08:22 PM   #14
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We paint all underwater metal with Prop Speed. Now many of the paint companies have paints now designed for this, although not perhaps as good, easier to apply. I'd absolutely paint it in Florida.
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Old 10-20-2020, 10:28 AM   #15
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I paint the prop and rudder with Pettit eco, along with the bottom. Took them down to bare metal and painted with no primer. Never had an issue with sticking. I re-coat as needed, usually every 2 years. No barnacles. Northeast boater, hauled for the winter.
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Old 10-20-2020, 11:17 AM   #16
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I didn't want to cough-up the price for prop-speed, so I bought a can of Petit Prop-Barnacle preventer paint at about $35/can. Went on like Rustoleum primer-grey spray paint, though I think the Rustoleum would work better. Going with Prop Speed next time.

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Old 10-20-2020, 12:09 PM   #17
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Quote:
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I didn't want to cough-up the price for prop-speed, so I bought a can of Petit Prop-Barnacle preventer paint at about $35/can. Went on like Rustoleum primer-grey spray paint, though I think the Rustoleum would work better. Going with Prop Speed next time.

Peter
Lots of people use rustoleum cold galvanizing. Think I'm gonna give it a try. If if wears off nothing lost. Click image for larger version

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Unread Yesterday, 07:23 PM   #18
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I always add cayanne pepper to my bottom paint. Tends to keep barnacles away.
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Unread Yesterday, 07:38 PM   #19
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Lots of people use rustoleum cold galvanizing. Think I'm gonna give it a try. If if wears off nothing lost. Attachment 109079


We used this on our prop in Sept. we used bottom paint on the rudder. It hasnít been long enough to report success but itís still on there and still clean (PNW)

Click image for larger version

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Unread Yesterday, 07:43 PM   #20
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We will be hauling on Wednesday so the fun will begin. After we get it winterized we are going to pull the starboard engine. Going to clean up that side, redo some wiring, add more LED lighting and rework the entire house battery bank.
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