Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 07-30-05, 04:41 PM   #1
OldeRider
Member
Thread Starter
 
Join Date: Jul 2005
Bikes:
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
'96 Trek 2300 Restoration

I have a 1996 Trek 2300 which I'm disassembling for restoration. It has a major corrosion problem on the aluminum joint(not sure what you call it) where the seat tube slides into. I can fix that pretty easy but the other major problem is the clear coat on the carbon fiber tubes is flaking in many places so I need to remove the clear coat and spray a new coat. I assume that lacquer is the best choice for the new clear coat. My first question is how can I remove the clear coat? Second problem is the handle bar stem is froze in the headset. I loosened the stem binder bolt and beat on it for quite a while but it wouldn't budge. Any ideas on how to loosen it? Thanks...
OldeRider is offline   Reply With Quote
Old 07-30-05, 08:18 PM   #2
dereknc
Lone Rider
 
Join Date: Aug 2004
Location: Asheboro, North Carolina
Bikes:
Posts: 126
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sounds like it's seen it's share of sweat. As far as the stem being frozen I think there's a puller made especially for this problem, someone correct me if I'm wrong. My first road bike developed the same problem from sweat. Now all my bike stems and seat posts are greased regularly. My '92 2300 has the clear coat coming loose from the water bottle mounts. I'm not sure what can be done about that problem. An automotive type clear coat would probably work best if you can get the old off.
dereknc is offline   Reply With Quote
Old 07-31-05, 06:51 PM   #3
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would not try to remove the clearcoat, just sand it with automotive sandpaper and then spray it.
Make sure the main tubes are still bonded to the aluminum lugs, try twisting them, if they are loose look for a replacement frame.

Al
Al1943 is offline   Reply With Quote
Old 08-01-05, 07:50 AM   #4
OldeRider
Member
Thread Starter
 
Join Date: Jul 2005
Bikes:
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Al, thanks for the reply. Some of the clear coat is peeling so I'm having success removing it with an Exacto knife. I'll take your advice about sanding the rest of the clear coat. Do you have any recomendations as to what grit of paper to use?
OldeRider is offline   Reply With Quote
Old 08-01-05, 12:25 PM   #5
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by OldeRider
Al, thanks for the reply. Some of the clear coat is peeling so I'm having success removing it with an Exacto knife. I'll take your advice about sanding the rest of the clear coat. Do you have any recomendations as to what grit of paper to use?
Haven't done this on a bike frame but my inclination is to use automotive paper wet. I'd start with something pretty fine depending on how much needs to be removed. Just guessing, maybe start with a 340 grit, finer would be better. Then use progressively finer paper up to 600 prior to painting. There are papers with a much finer grit that may be used to finish the paint if needed after it has dried and hardened. Your choice in sandpaper grit size depends on how much patience you have and what kind of results you want. You'll find a better selection of sanding supplies at an automotive paint supply store.

I would not use any type of chemical paint remover on carbon fiber.
Sanding plastics dry creates toxic dust, keep the paper really wet.
Most spray paints are toxic to some degree, some worse than others, I'd wear a mask.

Let us know how it turns out.

Al
Al1943 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 11:46 AM.