I use nail polish for these things, not an invisible repair but good for tiny spots.
Sosowski on
Corrosion? This is aluminum, nothing will happen when it’s exposed. Aluminum does not corrode.
Cars have aluminum rims with no coating and nothing happens to these.
Bearing_Breaker on
I wouldn’t bother at all. It’s bikepacking, not a fashion show.
You will see some serious abrasion on the paint on those over time.
This far, it hasn’t been a problem for me on my commuter bike, and salt is a serious thing in my area.
Regarding your corrosion theory: Aluminum alloys form a very thin corrosion layer within seconds that will protect deeper layers from corroding. That’s why aluminum can only be welded with AC current in order to break up this aluminum-oxide layer.
Salt and acids can of course still cause corrosion.
The biggest effect seen in reality is contact corrosion/ galvanic corosion between different materials, such as aluminum, copper, steel, zinc and nickle. This is caused by the different galvanic potential of the metals/alloys.
This is why you can see aluminum bike components sometimes turn into a white powder around bolt holes. This is because the bolt is usually zinc coated or stainless in the first place.
That’s why it’s a good idea to use some grease on non critical bolts (of course not on brakes or stuff like that!).
But besides that, no way to prevent that.
SStefanA on
You can buy a pre-pressurized atomising device that comes pre-charged with an anti-corrosive solution.
You should decontaminate the area where the anti-corrosion layer has been abraded, before applying a new one. This is best done with a secondary fatty alcohol like 2-Hydroxypropane.
Go to your local home centre and ask for a “can o’ black paint, please”
Available-Rate-6581 on
Don’t worry about it. Battle scars/ patina add kudos.
cafe_calva on
I suggest to do not use it if you dont want it to degradate
Twig_Scampi on
You are going to need to take this to an experienced body shop.
Needs to be completely media blasted. New base paint, then 5 layers of enamel, and finally 3 layers of clear coat baked on. After that, apply ceramic wax regularly. Go back every 3 weeks for a new clear coat.
/s
zystyl on
I have a $2 epoxy paint touch up pen that I use if it bothers me. Had it for years.
12 Comments
Any black spray paint will do.
I use nail polish for these things, not an invisible repair but good for tiny spots.
Corrosion? This is aluminum, nothing will happen when it’s exposed. Aluminum does not corrode.
Cars have aluminum rims with no coating and nothing happens to these.
I wouldn’t bother at all. It’s bikepacking, not a fashion show.
You will see some serious abrasion on the paint on those over time.
This far, it hasn’t been a problem for me on my commuter bike, and salt is a serious thing in my area.
Regarding your corrosion theory: Aluminum alloys form a very thin corrosion layer within seconds that will protect deeper layers from corroding. That’s why aluminum can only be welded with AC current in order to break up this aluminum-oxide layer.
Salt and acids can of course still cause corrosion.
The biggest effect seen in reality is contact corrosion/ galvanic corosion between different materials, such as aluminum, copper, steel, zinc and nickle. This is caused by the different galvanic potential of the metals/alloys.
This is why you can see aluminum bike components sometimes turn into a white powder around bolt holes. This is because the bolt is usually zinc coated or stainless in the first place.
That’s why it’s a good idea to use some grease on non critical bolts (of course not on brakes or stuff like that!).
But besides that, no way to prevent that.
You can buy a pre-pressurized atomising device that comes pre-charged with an anti-corrosive solution.
You should decontaminate the area where the anti-corrosion layer has been abraded, before applying a new one. This is best done with a secondary fatty alcohol like 2-Hydroxypropane.
Go to your local home centre and ask for a “can o’ black paint, please”
Don’t worry about it. Battle scars/ patina add kudos.
I suggest to do not use it if you dont want it to degradate
You are going to need to take this to an experienced body shop.
Needs to be completely media blasted. New base paint, then 5 layers of enamel, and finally 3 layers of clear coat baked on. After that, apply ceramic wax regularly. Go back every 3 weeks for a new clear coat.
/s
I have a $2 epoxy paint touch up pen that I use if it bothers me. Had it for years.
Rattle can!
But what caused this damage, an axle or frame?
This is how things look when you use your bike.