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white thing on rim around spoke holes/nipples?
What is it and how do you remove it? Only from
a very good position I got it away with a wire brush... -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 55 Blogomatic articles - |
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#2
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white thing on rim around spoke holes/nipples?
On Wed, 29 Jun 2016 06:05:50 +0200, Emanuel Berg
wrote: What is it and how do you remove it? Only from a very good position I got it away with a wire brush... No Picture? It might be a grommet, which reinforces the spoke hole, although they are metal and I don't think you could remove one with a wire brush. -- cheers, John B. |
#3
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white thing on rim around spoke holes/nipples?
John B. writes:
What is it and how do you remove it? Only from a very good position I got it away with a wire brush... No Picture? It might be a grommet, which reinforces the spoke hole, although they are metal and I don't think you could remove one with a wire brush. It is not supposed to be there. It is like rust, only white and much more difficult to remove. Pictu tomorrow -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 55 Blogomatic articles - |
#4
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white thing on rim around spoke holes/nipples?
On Wed, 29 Jun 2016 08:14:56 +0200, Emanuel Berg
wrote: John B. writes: What is it and how do you remove it? Only from a very good position I got it away with a wire brush... No Picture? It might be a grommet, which reinforces the spoke hole, although they are metal and I don't think you could remove one with a wire brush. It is not supposed to be there. It is like rust, only white and much more difficult to remove. Pictu tomorrow Aluminum corrosion is white. -- cheers, John B. |
#5
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white thing on rim around spoke holes/nipples?
On 6/29/2016 1:14 AM, Emanuel Berg wrote:
John B. writes: What is it and how do you remove it? Only from a very good position I got it away with a wire brush... No Picture? It might be a grommet, which reinforces the spoke hole, although they are metal and I don't think you could remove one with a wire brush. It is not supposed to be there. It is like rust, only white and much more difficult to remove. Pictu tomorrow It's aluminum oxide, a corroded residue which was once metal, but now at a lower energy state. Looks like this: http://www.amteccorrosion.co.uk/Alum..._02%5B1%5D.jpg -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#6
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white thing on rim around spoke holes/nipples?
AMuzi writes:
It's aluminum oxide, a corroded residue which was once metal, but now at a lower energy state. The aluminum of the rim reacts to the spoke nipples in time? Or is it sensitive to dirt and moisture that just sticks in and around the holes and nipples? What do you do about it? Keep clean? The wire brush worked but not without effort and I could see that in the nooks the aluminum oxide remained... -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 55 Blogomatic articles - |
#7
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white thing on rim around spoke holes/nipples?
On Wed, 29 Jun 2016 06:05:50 +0200, Emanuel Berg
wrote: What is it and how do you remove it? Only from a very good position I got it away with a wire brush... The white thing? That's the price tag. I'm not sure why someone would put it around a spoke hole, but it should come off with some solvent or "Goop Off" oil. A wire brush will scrape off the surface anodizing from the rim, and damage the rim finish. If you must scrape, use a soft plastic or soft boar bristle hair brush. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#8
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white thing on rim around spoke holes/nipples?
Jeff Liebermann writes:
What is it and how do you remove it? Only from a very good position I got it away with a wire brush... The white thing? That's the price tag. I'm not sure why someone would put it around a spoke hole, but it should come off with some solvent or "Goop Off" oil. A wire brush will scrape off the surface anodizing from the rim, and damage the rim finish. If you must scrape, use a soft plastic or soft boar bristle hair brush. I have the common hair, nylon, brass, and steel brushes, with steel wool, Svinto, and emery. Perhaps just cloth and alcohol can take some of it away long with some dirt... -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 55 Blogomatic articles - |
#9
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white thing on rim around spoke holes/nipples?
On Thu, 30 Jun 2016 00:51:05 +0200, Emanuel Berg
wrote: Jeff Liebermann writes: What is it and how do you remove it? Only from a very good position I got it away with a wire brush... The white thing? That's the price tag. I'm not sure why someone would put it around a spoke hole, but it should come off with some solvent or "Goop Off" oil. A wire brush will scrape off the surface anodizing from the rim, and damage the rim finish. If you must scrape, use a soft plastic or soft boar bristle hair brush. I have the common hair, nylon, brass, and steel brushes, with steel wool, Svinto, and emery. Perhaps just cloth and alcohol can take some of it away long with some dirt... So much for my humor. As others have mentioned, you may have some aluminum oxide corrosion. There are a variety of mechanisms that will attack aluminum, including some "cleaners". Galvanic action will also cause corrosion such as between a brass spoke nipple and the aluminum rim: http://www.totalmateria.com/page.aspx?ID=CheckArticle&site=ktn&NM=187 I can't tell from here which one has trashed your rim. A photo would be useful. You may need a microscope to see any cracks. If the spoke hole looks damaged, the spoke nipple might rip through the enlarged and weakened hole when put under tension. You might also want to take a look inside: http://farm6.staticflickr.com/5470/8944382412_857779a6b7_k.jpg The problem is that to produce aluminum oxide, some aluminum must disappear to produce the oxide. That results in pitting, cracking, and weakening of the aluminum. If you actually manage to clean off the oxidation, you'll probably find a damaged surface. Scroll down to the 3 photos of damaged rims: http://www.totalmateria.com/page.aspx?ID=CheckArticle&site=ktn&NM=187 As for cleaning, there are a variety of potions that claim to work: https://www.google.com/search?q=aluminum+oxide+cleaner Most contain phosphoric acid. For example: http://www.loctiteproducts.com/p/s_trmt_alum/technical-data/Loctite-Aluminum-Jelly.htm http://www.aircraftspruce.com/catalog/cspages/alumiprep.php If you just want to clean off the oxide crust, acetic acid, in the form of white vinegar should work. However, it's not a very strong acid, takes a long time, and will ruin a rim with polished aluminum finish. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#10
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white thing on rim around spoke holes/nipples?
Emanuel Berg wrote:
John B. writes: What is it and how do you remove it? Only from a very good position I got it away with a wire brush... No Picture? It might be a grommet, which reinforces the spoke hole, although they are metal and I don't think you could remove one with a wire brush. It is not supposed to be there. It is like rust, only white and much more difficult to remove. Pictu tomorrow Where's the picture? |
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