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oxidation on 1800cc sign

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Ischa

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Bmw R18, Honda Rebel 500
I've got a oxidation problem on both the 1800cc signs (located on the engine).
And i wonder if somebody got the same problem.
 

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thanks for the response. The thing is. The black layer is peeling away... Replacement part is about 150 euro ☹️. I could bead blast it and make it a uniform "color". But thats not pretty tho.
To be honest i find the quality of this bike just not good.
2 years old and ive got chrome getting loose, dead battery, broken reverse, loose fitted left buttons, and now this.
Still like the bike btw. But its an observation
 
I bought a custom made set of those engine labels from guy in Germany. Good quality and can have it say whatever you want.
 
Me and painting... the bike is going to look like a van Gogh
Maybe moisture has been allowed to sit at the top of the emblems, thus causing the paint blistering. Look out for other parts on the bike that perhaps are also showing signs of oxidation or rusting.

To repair the emblems you should be able to do this fairly easily with the help of aerosol paint. You can either mask the lot and leave the unpainted part unmasked or repaint the whole thing.

Prep is paramount. Lightly sand the area to be painted and clean afterwards with acetone or lacquer cleaner. Apply a small burst of etching primer (aerosol paint) and let it dry for at least 30 minutes followed by enamel black paint (aerosol paint) and let it dry for one hour or more. If you want to add a bit more shine and protection then apply a light coat of clear lacquer (aerosol paint) although this won’t be absolutely necessary.

I have a boat in salt water and every year I take it out for winter. The Outdrive is made of aluminium which is notoriously hard to paint and as part of the yearly maintenance I have to touch up any part of the Outdrive where due to galvanic corrosion causes the paint to bubble up and reveal the aluminium to the environment. Doing what I just described above my outdrive is in top notch condition, considering that it spends at least 9 months of the year submerged in salt water.
 
Maybe moisture has been allowed to sit at the top of the emblems, thus causing the paint blistering. Look out for other parts on the bike that perhaps are also showing signs of oxidation or rusting.

To repair the emblems you should be able to do this fairly easily with the help of aerosol paint. You can either mask the lot and leave the unpainted part unmasked or repaint the whole thing.

Prep is paramount. Lightly sand the area to be painted and clean afterwards with acetone or lacquer cleaner. Apply a small burst of etching primer (aerosol paint) and let it dry for at least 30 minutes followed by enamel black paint (aerosol paint) and let it dry for one hour or more. If you want to add a bit more shine and protection then apply a light coat of clear lacquer (aerosol paint) although this won’t be absolutely necessary.

I have a boat in salt water and every year I take it out for winter. The Outdrive is made of aluminium which is notoriously hard to paint and as part of the yearly maintenance I have to touch up any part of the Outdrive where due to galvanic corrosion causes the paint to bubble up and reveal the aluminium to the environment. Doing what I just described above my outdrive is in top notch condition, considering that it spends at least 9 months of the year submerged in salt water.
Thanks for this useful information. Im think im going to try this. If it is galvanic corrosion do you think a rubber seal between the frame and plate would prevent further corrosion?
 
Although the rubber seal is a good approach, I don’t think you have a galvanic corrosion issue to be honest. My thoughts are that the paint at some point was slightly damaged/scratched and water or moisture was allowed to creep in and the aluminium or soft alloy in the emblem bubbled up.
I would lightly sand the area to be treated and clean afterwards with a lint free towel and acetone or compressed air and apply the etching primer. This is by far the most critical part of the process because that will ensure any paint added afterwards will have a good key to adhere to the surface and thus seal the metal from the elements. Trust me, it sounds more complicated than it actually is, I just wanted to give you as much info as I could. Let me know if you have any questions.
 
Although the rubber seal is a good approach, I don’t think you have a galvanic corrosion issue to be honest. My thoughts are that the paint at some point was slightly damaged/scratched and water or moisture was allowed to creep in and the aluminium or soft alloy in the emblem bubbled up.
I would lightly sand the area to be treated and clean afterwards with a lint free towel and acetone or compressed air and apply the etching primer. This is by far the most critical part of the process because that will ensure any paint added afterwards will have a good key to adhere to the surface and thus seal the metal from the elements. Trust me, it sounds more complicated than it actually is, I just wanted to give you as much info as I could. Let me know if you have any questions.
A curious thing is that both of the plates have the same issue. And not only the paint but also the threads inside the frame. I think i will paint both sides to prevent creating weak spots in the paint and also electrical contact
 
Ahhh, I thought it was only one emblem. Is the pitting on both at the very top? If this is the case then this will indicate the bike at some point was exposed to humidity and the moisture seated at the very top. Looking at the picture, it does not look too bad and would be easy to re paint. The corrosion in the threads also point at moisture going undetected and seating in the threads. Apply a bit of oil or ACF-50 to the threads before reinstalling the bolts and you should be good for future.
 
In this photo you can see that it has creeped under the outer plating. That i also think is due to moisture. But it is weird that that can happen so quickely
 

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What do you use to wash the bike? Do you use a pressure washer? Live near the ocean or subject to salt somehow?
 
What do you use to wash the bike? Do you use a pressure washer? Live near the ocean or subject to salt somehow?
Yes, i live near the ocean. And the bike is parked outside (with cover). I do expercience rust already, for example the drive shaft is getting a little rusty.
 
Living close to the ocean you are prone to get salt in the air and although the bike is under cover, the wind will always find its way in. I would recommend once you wash your bike and has been dried (you can use a hair dryer to ensure all the crooks and crannies are dried) to apply a healthy amount of ACF-50 or other anti corrosion fluid to protect the bike against the salt. I use ACF-50 on my bike, car and boat and it does what it says on the can. It will create an invisible barrier that last up to 12 months on areas that are not too exposed and it is safe on electrical components. Don’t apply to the exhaust or brakes.
 
That’s why because I live near the ocean I got a trailer and made a garage out of it. So now my bike and other various toys have an AC garage. I have my original set of badges that’s I took off at 90 miles. If you want them I’ll give them to you for 80 + shipping.
 
That’s why because I live near the ocean I got a trailer and made a garage out of it. So now my bike and other various toys have an AC garage. I have my original set of badges that’s I took off at 90 miles. If you want them I’ll give them to you for 80 + shipping.
Thank you so much for offering! Im going to pick the solution offered by enzo. If thats not going well, then id like to get in contact with you.
 
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