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Message started by Neil on 12/21/20 at 09:32:19

Title: metal corrosion
Post by Neil on 12/21/20 at 09:32:19

What kind of metal is this, what causes the corrosion, and can it be removed?

Title: Re: metal corrosion
Post by Neil on 12/21/20 at 09:34:03

Title: Re: metal corrosion
Post by badwolf on 12/21/20 at 09:44:45

The side cover is aluminum. Road spray, heat, and grit eats away the clear coat and that is what you end up with.
You can take it off, strip it and re-polish it, and it will look like new,,,,, for awhile. Dave leaves his bare and shines it up after most every ride and it looks great! If you don't want that much work, you can clear coat it and start the cycle all over again, this time paying more attention to keeping it clean.
Use a good 2 part clear coat not the cheap stuff and it will last quite a while.

Title: Re: metal corrosion
Post by Gary_in_NJ on 12/21/20 at 10:21:27

When I got my Savage it was a basket case. All of the clear coat was destroyed; engine cases, forks, wheel hubs...if it was clear coated it needed work.

I removed the clear coat with 400 grit sandpaper, and then 800 grit. I then used a polishing wheel to bring everything up to a great shine. I thought that I would be constantly polishing this motorcycle once finished. To my surprise, I polish the bike once a season. My bike is garage kept and I don't ride in the rain, so there is little opportunity for the polish to loose its luster.

Sure, I'd rather have good clear coat on my parts, but the truth is the polished parts look better. If my bike wasn't kept in a garage...I'd probably hate having to polish all of the parts on a regular basis.

Title: Re: metal corrosion
Post by badwolf on 12/21/20 at 10:41:14

The cover over the front pulley comes off easy so it's a good place to start. Practice on that BEFORE you pull the right engine cover. That cover is tricky to get off cause of the wireing and a big ass magnet. It is harder to get on right again cause of the magnet and a washer that falls out and you are not sure where it came from. Print out the parts diagram BEFORE you start disassembly, it will help.

Title: Re: metal corrosion
Post by Gary_in_NJ on 12/21/20 at 11:08:49

Or...polish it in place. I used a polishing wheel on a pneumatic die grinder.

Title: Re: metal corrosion
Post by hotrod on 12/21/20 at 12:00:49

I forgot all the details, but you can get it shinny then coat it with sodium silicate. Bake in in the oven. Let it cool, then buff it out a little.

Title: Re: metal corrosion
Post by justin_o_guy2 on 12/21/20 at 12:27:07

Regular rattle can clear yellows and fails.
For about twenty five bucks you can get a can of two stage clear.
This stuff will End You if you breathe it.
Period..
Have a proper fitting Painter respirator with new carbon filter cartridges.
If you taste or smell the paint, stick the can in the fridge and work on solving the problem.
I did the aluminum on the forks and fork sliders with one can and had some left.

Can't speak to how long it lasts because someone ran over me just a couple of months later.. but it's been sitting outside over a year and I haven't noticed it is messing up..

Title: Re: metal corrosion
Post by justin_o_guy2 on 12/21/20 at 12:59:38

Call a body shop and ask about them shooting them for you
Or where they get supplies.
That's where I go in Longview, to the store that sells to body shops.

Title: Re: metal corrosion
Post by Dave on 12/25/20 at 04:40:59

505A5E545F56525B050307370 wrote:

To my surprise, I polish the bike once a season. My bike is garage kept and I don't ride in the rain, so there is little opportunity for the polish to loose its luster.

I have pretty much the same routine as Gary.....I ride when it is sunny and try to avoid rain. I polish once or twice a year.

I used Aircraft stripper to remove the original clearcoat, then started with #360 wet sandpaper, then #400, #600, #1000 - then used a buffing wheel.

I have tried lots of polish, and the Griots Garage polish seems to protect the best.

If it was a bike I rode in all weather, was stored outside or I just wanted something maintenance free - I would consider either coating them with a 2K clear or getting them powder coated clear......or maybe a silver or black color of powder.