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Post by npmr on Dec 7, 2014 18:14:10 GMT
We have a S.O.33i that has had just 4 seasons in the water.(launched 2010)
The paint (powder coating) is coming off the engine control in large chunks and is quite unsightly. I believe it is made by Lewmar.
Is this a common problem? Has anyone else had it in a boat so new - it started last season, so, when it was just over 2 seasons on the water. What causes it?
And any special problems in re-spraying it, apart from the cost on a relatively young boat? |
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Post by dbostrom on Dec 7, 2014 19:12:17 GMT
Bad batch? Perhaps the part was dirty when it was coated.
If you're in or have access to a largish city you can probably find an outfit to properly recoat (powder coat that is) the part for not too much money. A professional firm can get the part scrupulously clean by blasting with an appropriate agent, doing their electrostatic magic on it . Properly done powder coating is a wonderful thing in terms of appearance and durability.
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Post by Trevor on Dec 7, 2014 21:15:07 GMT
That sounds very unusual to me. I have a SO42DS with the 54HP Yanmar engine and the paintwork is great apart from the piece that had salt water on it because of a leaking exhaust mixer elbow.
I have found it very difficult to find the correct matching paint however so if anyone knows where to buy Yanmar grey paint in Sydney, Australia I would love to hear about it.
Regards,
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Post by npmr on Dec 9, 2014 10:45:43 GMT
Just to clarify further, the engine control is on the white pedestal with the wheel and is powder coated in white. I believe it is made by Lewmar.  |
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Post by sailbleu on Dec 9, 2014 14:47:56 GMT
The engine control is made of alu or an alu-alloy is it not ?
Typical , once a the powder coating surface has been compromised , even in the slightest way , alu-oxide kicks in. This stuff is ever so hydroscopic , read , very very very.
So it expands , pushing more coating from the alu body . And it goes on and on.
Not sure if you are familiar with " hammerite " ? Even up to now it's a miracle paint .
Get all of the powder coating off , degrease , degrease and degrease. Apply Hammerite spray , and if you don't mind the expense first use the Hammerite primer .
Job done.
Regards
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Post by npmr on Dec 24, 2014 12:22:11 GMT
t turns out it is not a Lewmar unit but a GoiT, who I believe have gone bust. Can anyone confirm this?
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Post by MalcolmP on Dec 24, 2014 12:33:02 GMT
yes Goiot has a had a very patchy history - they were part of the Navimo/Plastimo collapse a couple of years ago. They are trading again and have new owners: goiot-systems.com/ but guess warranty issues will not be high on their agenda... In the past Kenneth Ryland has been able to gets parts - he will probably be the best point of contact - unless you are fluent in French www.sanshin.co.uk/ |
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Post by hoppy on Dec 24, 2014 18:29:31 GMT
The engine control is made of alu or an alu-alloy is it not ? Typical , once a the powder coating surface has been compromised , even in the slightest way , alu-oxide kicks in. This stuff is ever so hydroscopic , read , very very very. So it expands , pushing more coating from the alu body . And it goes on and on. Not sure if you are familiar with " hammerite " ? Even up to now it's a miracle paint . Get all of the powder coating off , degrease , degrease and degrease. Apply Hammerite spray , and if you don't mind the expense first use the Hammerite primer . Job done. Regards You post got me thinking about fixing the mount for my cockpit table as the powder coat is coming away. I googled Hammerite and recognised that it is the same as the empty paint tine sitting two feet away from me about to be thrown out  It's red and came with boat and I have no idea where it was used. I also have white which was used on the keel bolts |
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Post by sailbleu on Dec 25, 2014 7:27:32 GMT
Hammerite is fantastic on ferro-metals.
For alu - a non-ferro as you well know -I would first use a primer designed for that so the finish paint stays on.
There's no finishing paint that will permanently stick to non-ferro's without a primer . But hammerite finishing paint is getting close though
The thing with alu-oxide is that it has the same nasty caracteristic ( even much worse) as water freezing up , expansion .
Although a protective layer for the alu itself , It will destroy everything that's on top of it . But not without oxigen , therefor the alu has to be covered/sealed completely.
Regards
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It's red and came with boat and I have no idea where it was used. I also have white which was used on the keel bolts