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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Corrosion Spots on the Aluminium Alloys /cgi-bin/YaBB.pl?num=1252063952 Message started by Routy on 09/04/09 at 04:32:32 |
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Title: Corrosion Spots on the Aluminium Alloys Post by Routy on 09/04/09 at 04:32:32 I have some corroded spots on the front forks, and when I sand them out, and then put the "mothers" to them, the corroded spots (or the center of the area sanded) turn out shiny'er than the area around them that got sanded w/ it. Its like the finish on the aluminium has a clear coating put on it after it was polished ??? I don't understand it. When I'm done polishing it, the corosion spots are completely gone, but I end up w/ 2 noticeably different finishes, and it seems no amount of rubbing changes it. Does anyone know what is causing this problem. Thanks Rich |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by voldigicam on 09/04/09 at 04:57:04 The aluminum is clear coated. I'm just going to strip mine and have them powder coated. |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by Routy on 09/04/09 at 06:35:43 332A29212C222C262428450 wrote:
If they are clear coated, then what I am probably seeing is not corrosion, but the clear coat blistering. I wonder how common that is ? At any rate, I have to now decide what looks better, the blister spots, (looking like corrosion) or the clean 2 tone fihish spots. |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by verslagen1 on 09/04/09 at 09:28:25 most likely you have a rock strike on your fork that penetraited the clear coat and it will corrode under the finish. The only way you're going to get a consistant finish now is to completely strip the fork and polish or paint it. |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by justin_o_guy2 on 09/04/09 at 10:20:33 The engine is starting to get that mess on it. Where leather flaps on the clutch cover is rubbed thru. Generally, this bike simply does not look new anymore. It has been hard for me to accept that, but its just not gonna get older & not show it. Ill have to live with it, because I dont have the time/energy to fight the effects of time & miles. At least I am able to hold up the miles of smiles & look at the bike thru that "filter" & I can almost appreciate the deterioration of the looks. I Wish I could keep it looking new, I just cant. Maybe one day the engine will look raspy enough that I can justify spending the time to spiffy it back up. |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by Routy on 09/04/09 at 15:02:59 495650574A4D7C4C7C44565A11230 wrote:
Good post, very true. I guess maybe I just have too much time anymore ?? But I can't fish all the time ! BTW, I got some nice LM Bass this morning,...one was 16 1/2", sure took my mind off the corroded spots for a while ! 8-) Rich |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by rokrover on 09/04/09 at 16:17:59 Hey justin - you describe exactly the way I feel looking in the mirror every morning (substitute bike for rider.) Now if only the bod could be rehabilitated with a few touch ups like that! |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by thumperclone on 09/04/09 at 17:21:29 SANDED???? with what?? never ever sand unles youa re going to resurface.... |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by rigidchop on 09/04/09 at 19:57:12 mine never even gets washed, unless i'm riding in the rain. lol. my engine covers and fork lowers look like crap. i just cant justify pulling apart a running bike to make it shiney again. one of these days when i break down and buy a new cam... maybe :P |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by Routy on 09/04/09 at 21:06:05 2B372A322F3A2D3C3330313A5F0 wrote:
With about 150-200 grit,....No ?? Ok, you got a better way. Actually this works quite well, ......,after sanding till the corrosion is gone, rub it good w/ Mothers, and it comes out really smooth, but it ends up w/ a noticeably 2 different finishes in that one spot. I did 2 spots, and I'm not sure its worth the trouble. Rich |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by verslagen1 on 09/04/09 at 21:34:59 232C362D313724262E2037450 wrote:
With about 150-200 grit,....No ?? Ok, you got a better way. Actually this works quite well, ......,after sanding till the corrosion is gone, rub it good w/ Mothers, and it comes out really smooth, but it ends up w/ a noticeably 2 different finishes in that one spot. I did 2 spots, and I'm not sure its worth the trouble. Rich [/quote] That might be ok for the corrossion, but it would be better if you used finer grit 400 min. Why cause the 150 leaves deep scratches. And takes forever to polish out. might be ok with heavy polish, I'll have to get some. but still finer is better. Now if you want to do the rest of it, get some aircraft stripper. wally world has it. It'll take the clear coat off no problem ready to polish if not corroded. |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by genejohnson on 09/05/09 at 13:02:18 Verslagen what is the name of the aircraft stripper sold at Wallyworld?? Thanks Gene |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by justin_o_guy2 on 09/05/09 at 14:40:20 Easy to find the stripper. Just go to the brass pole. |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by genejohnson on 09/05/09 at 17:58:07 That wasn't what I was refering to but.... I'm not in the market for "buying" that type. If their giving away free samples, I would certainly take them up on it! Gene |
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Title: Re: Corrosion Spots on the Aluminium Alloys Post by sakara on 09/10/09 at 08:43:30 I assume you mean the lower fork tubes? I used 600, 800 and then 1000 grit wet sand then polished. These forks were rough. The upper forks themselves were so rusted they were like caked on rub-it-off-in-your-hand rust, like dried dirt. To get those polished up and looking better took some harsher methods. Here's some crappy cell phone pics. http://photos-d.ak.fbcdn.net/photos-ak-snc1/v350/240/106/584605773/n584605773_1595219_7630.jpg http://photos-b.ak.fbcdn.net/photos-ak-sf2p/v647/240/106/584605773/n584605773_1943185_8658.jpg http://photos-e.ak.fbcdn.net/photos-ak-snc1/v2054/240/106/584605773/n584605773_2073516_6497.jpg |
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