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post #1 of 11 Old 04-15-2013 Thread Starter
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barnacle growth on feathering prop

What is the best way to prevent barnacle growth on a feathering Max prop?

I installed in the prop last year but when I took her out of the water late last fall, there was barnacles on the brass blades, hub and shaft. Although it still feathered properly but I left her in the water longer, I could see how additional barnacles could prevent the prop to fully feather.

Patrick

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Kinsale, Va
Tanzer 16'
Moseley, Va
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post #2 of 11 Old 04-15-2013
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Re: barnacle growth on feathering prop

Max-prop themselves sell Petit's zinc paint. I've never used it, but know some who have and think it helps. I also think that polishing the blades well before splashing delays the growth, but you'll still get it.

A diver every once in a while is probably the best solution.


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post #3 of 11 Old 04-15-2013
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Re: barnacle growth on feathering prop

Have a 3 blade on the PSC and a eccowind on the new one. Putting anything on them seems not to work too well but having the surface mirror smooth and using it every once in while seems to work quite well. Still, always seem to get one or two on the hub just in front of a blade. You're in warmer water so may be more of an issue.

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post #4 of 11 Old 04-15-2013
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Re: barnacle growth on feathering prop

I started with the Pettit zinc spray and ended with a well polished prop as my best solution

I found a good finish on the gear was just as easy to keep clean as in high season around here you need a wipe down every two weeks

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post #5 of 11 Old 04-15-2013
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Re: barnacle growth on feathering prop

I'm dreading my first dive on my Max prop. It's been in the water for two years.

It feathers properly, and rotates from forward to reverse - and drove the boat at 6kts @ 2500rpm. Maybe I got lucky, but I'm still taking a scraper and brush down once the water warms up above "dead in 20 minutes" level.

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Re: barnacle growth on feathering prop

Would you just dive down and wipe down the prop every two weeks?
I don't mind going swimming every so often but sometimes I cannot make it out there for a while.... you know, kids, family, work and life really takes away my sailing time....(joking)

When I purchased the prop last year, it was highly polished and I was surprised to see so many barnacles on it when I pulled her out in Dec.
I spoke to a few people that used the Pettit zinc barrier coating and appears only to make a difference within the first month or two.

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Tanzer 16'
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Re: barnacle growth on feathering prop

Some people are reporting good results covering the prop with permanent marker (yes, those things you write with). If it works, I wonder for how long it works, and why it works. Is it the xylene or whatever in them, and if so, could you get that over-the-counter without buying marker pens?

I use lanolin and teflon grease (either, depending on what I have handy), it seems to work to a degree, but it does wash off quite quickly.
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Re: barnacle growth on feathering prop

ChucklesR,
You are not that far north from me. My feathering prop was covered in barnacles and I had a hard enough time carefully scraping them off on the hard. I found that instead of just using a scraper, I picked up a stainless steel wire brush with a small scraper at the end of it. This helps since the blades have a slight curve to them.
If I can't find a product to use on the prop, I think I will come up with a underwater maintenance schedule. Perhaps continuous maintenance - cleaning will prevent extensive build up.

Patrick

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Kinsale, Va
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post #9 of 11 Old 04-15-2013
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Re: barnacle growth on feathering prop

My boat sits in a small bay with water temps approaching 80F mid summer. Without a coating, it took me 30 mins with scuba gear to scrape it a couple of years ago. Couldn't find a patch of shinny metal, just a bit white mass. I've got a max prop.

I've had good luck with Prop Speed....but it's pricy.

g
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post #10 of 11 Old 04-15-2013
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Prop Speed is great from what I have heard but pricey and probably best when applied by a pro. Pettit Barnacle Barrier Zinc Coat has served well on my Autostream feathering prop, and its much much less expensive and easily applied by a dyi. I have used it for years, only one year did I have less than good results (very warm water) and that was primarily just the shaft.

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