painting magnesium lowers?- Mtbr.com
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  1. #1
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    painting magnesium lowers?

    ive got a 2006 dirt jumper 2 and i want to paint it seeing as it was given to me in the "poop" brown color and it i need a new project to stay busy. I've had expierence with painting aluminium and steel frames before. ie aircraft stripper, sanding, base coats, color, lots of clear etc. But with these magnesium lowers is there a specfici way to paint with the material or can i just treat it like aluminium?
    Looking for a 7.87 x 2.25mm shock, any brand any age that runs well!! cheap would be appreciated!

  2. #2
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    I don't think traditional paint stripper is compatible with magnesium, and you want to make sure to coat it fast, as I believe magnesium oxidizes rather quickly, and it won't be solid like aluminum is.

    I don't think there are any secrets to repainting them though.

  3. #3
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    To be honest, I would just make sure all teh decals are off of it, and rough it up a bit with some sandpaper. I wouldn't worry about trying to scrape all of the paint off. I suggest checking over at Pinkbike.com though, they seem to paint alot of stuff over there.

  4. #4
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    I have painted Magnesium before. I did not try stripper I just sanded it smooth and took most of the paint of the lowers and then primer and paint. I would suggest multiple coats because lowers of course scratch. Clear coating is also a good Idea.

  5. #5
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    Second this.

    400 or 240 grit sandpaper to roughen up the surface and smoothen out any gouges. Clean surfaces with prep wash, prime with etch primer, then paint with slow drying epoxy type paint. 2 or 3 thin coats with plenty of drying time in between. Use the best primer and paint you can get.

    Recently did this to my Fox 40s, quite happy with the result.
    wanted: Cannondale Lefty w/ V-brake studs

  6. #6
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    Quote Originally Posted by lelebebbel View Post
    Second this.

    400 or 240 grit sandpaper to roughen up the surface and smoothen out any gouges. Clean surfaces with prep wash, prime with etch primer, then paint with slow drying epoxy type paint. 2 or 3 thin coats with plenty of drying time in between. Use the best primer and paint you can get.

    Recently did this to my Fox 40s, quite happy with the result.
    any reccomendations on paint? and hw many cans did you use?
    Looking for a 7.87 x 2.25mm shock, any brand any age that runs well!! cheap would be appreciated!

  7. #7
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    I used VHT high temp engine enamel. I figured it might be better and I have had good luck with it on an engine I did.

  8. #8
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    Quote Originally Posted by Crimson View Post
    I have painted Magnesium before. I did not try stripper I just sanded it smooth and took most of the paint of the lowers and then primer and paint. I would suggest multiple coats because lowers of course scratch. Clear coating is also a good Idea.
    +1
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  9. #9
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    Quote Originally Posted by austinb89 View Post
    any reccomendations on paint? and hw many cans did you use?
    The stuff I used is called "Killrust" Epoxy Enamel. Don't know if you can buy it in the US, but you'd get something similar for sure.
    For primer, use industrial strength etch primer.
    I used less than half a can of each.

    Mask off all the threads and openings (playdoo or blue-tac works great to cover threads and holes).
    Make sure to clean the surface properly with prep-wash or prep-sol or something before priming.
    wanted: Cannondale Lefty w/ V-brake studs

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