Corrosion with Aluminum?
04-20-03, 09:48 PM
#1
Rides with Cows
Thread Starter
Join Date: Apr 2003
Location: Fixing a flat
Posts: 1,232
Bikes: Trek 7000
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Corrosion with Aluminum?
When I got my Trek 7000 (ZX Aluminum series, Easton ProGram Taperwall Alum), it had a nasty gash on the right chainstay I guess coz the chain hit it? I'd like to fix this if there's a chance of corrosion here. Anyone know how?
__________________
04-20-03, 09:51 PM
#2
Senior Member
Join Date: Dec 2002
Posts: 306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Touch up paint? The only corrosion problem is with salty water (sweat) which can cause the paint around the ding to bubble up and look nasty. Aluminum does not actually rust just gets a bit of corrosion on it occasionally.
-Ryan
-Ryan
04-21-03, 06:10 AM
#3
I ride a REAL Schwinn!
Join Date: May 2002
Location: NH, USA
Posts: 607
Bikes: Lemond Nevada City (stock), '00 Schwinn Moab 3 (very upgraded)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Clear fingernail polish! - Or if you want to take the time you can try to match the color with the bike. The fingernail polish seals the scratch/gash over, keeping water and contaminants from getting to the area. I've used it a ton of times, Road(steel frame) and mountain(aluminum) and it seems to do the job great. Picking up a chainstay guard for a few dollars from your LBS or the net will keep anything like this from happening again and will quiet down the ride some (You won't hear the chain slapping against the chainstay).
-Moab
-Moab
04-24-03, 02:38 PM
#6
Footballus vita est
Join Date: Jun 2002
Location: Portland, OR
Posts: 2,118
Bikes: Trek 4500, Kona Dawg
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
If the gash actually took some aluminum out of the metal, you probably do want to add some filler, like JB weld. Might want to sand the area lightly first. The filler will help restore some of the original strength. This shouldn't be too much of a concern unless the gash extends a significant fraction of the tubing's thicknes (> 1/4)
After you've filled it (if it needs) and sanded, go with the polish, although it isn't really necessary. One interesting thing I learned in my materials science class is that aluminum isn't actually immune to corrosion, it just forms a thin but fairly durable layer of corrosion that protects itself!
After you've filled it (if it needs) and sanded, go with the polish, although it isn't really necessary. One interesting thing I learned in my materials science class is that aluminum isn't actually immune to corrosion, it just forms a thin but fairly durable layer of corrosion that protects itself!
__________________
"The internet is a place where absolutely nothing happens. You need to take advantage of that." ~ Strong Bad
"The internet is a place where absolutely nothing happens. You need to take advantage of that." ~ Strong Bad
04-26-03, 11:25 PM
#7
The Red Lantern
Join Date: Apr 2003
Location: Raleigh NC
Posts: 5,965
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Sometimes it forms a thin protective layer that protects its self. I could show you some old two stroke cases that look like they have the metallic version of leprosy.
__________________
Are you a registered member? Why not? click here to register. Its free, and only takes 27 seconds!
Help out the forums, abide by our community guidelines.
I am in the woods and I have gone crazy.
Are you a registered member? Why not? click here to register. Its free, and only takes 27 seconds!
Help out the forums, abide by our community guidelines.
I am in the woods and I have gone crazy.
04-27-03, 09:09 AM
#8
Rides with Cows
Thread Starter
Join Date: Apr 2003
Location: Fixing a flat
Posts: 1,232
Bikes: Trek 7000
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Originally posted by Rev.Chuck
Sometimes it forms a thin protective layer that protects its self. I could show you some old two stroke cases that look like they have the metallic version of leprosy.
Sometimes it forms a thin protective layer that protects its self. I could show you some old two stroke cases that look like they have the metallic version of leprosy.
__________________
