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 04-08-06, 11:41 AM   #1
Erik
Senior Member
Thread Starter
 
Join Date: Jun 2003
Location: Arnhem, The Netherlands
Bikes:
Posts: 88
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Frame rust: total loss?

My precious old Chesini frame is starting to show some rust on the horizontal and vertical chainstay's. I'm a bit worried this will be the end of my frame. The paint in these areas is also damaged quite badly and flakes off very easily. Is there a way to save my frame without stripping the paint entirely? I really don't want to remove the paint because it is what makes the bike so special. I added some pictures for you to see!
Attached Images
File Type: jpg 1.jpg (95.2 KB, 177 views)
File Type: jpg 2.jpg (97.4 KB, 159 views)
File Type: jpg 3.jpg (97.0 KB, 160 views)
Erik is offline   Reply With Quote
Old 04-08-06, 11:53 AM   #2
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,614
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Quote:
Originally Posted by Erik
My precious old Chesini frame is starting to show some rust on the horizontal and vertical chainstay's. I'm a bit worried this will be the end of my frame. The paint in these areas is also damaged quite badly and flakes off very easily. Is there a way to save my frame without stripping the paint entirely? I really don't want to remove the paint because it is what makes the bike so special. I added some pictures for you to see!
If the paint is flaking off easily, I think that it's done.

I don't know about the Netherlands, but in the US there are a few bicycle refinishing specialty firms that can restore your bike's finish, complete with decals, to as-new condition. They do an excellent job, but they don't come cheap.
Retro Grouch is offline   Reply With Quote
Old 04-08-06, 12:26 PM   #3
TallRider
me have long head tube
 
TallRider's Avatar
 
Join Date: Oct 2005
Location: Chapel Hill, NC
Bikes:
Posts: 4,106
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The paint job itself might be done, especially in that area. But it doesn't appear that the rust has much compromised the steel itself in that area.

I suspect you can find specialty bike-paint-refinishing places, or auto-body shops, that can handle this.

Alternately, you might do things yourself. It appears that the rust and flaking are in not-so-visible places, and you could sand down that area (getting rid of rust, and smoothing the merger between bare steel and currently okay paint), hit it with some primer, and then some cover paint whose color is not too different from the current paint job. The area where the stays connect to the bottom bracket is rarely very noticeable.
TallRider is offline   Reply With Quote
Old 04-08-06, 12:39 PM   #4
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,547
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Thats just surface rust which from the photos, does not look like it affects the structural integrity at all. I don't think theres any other fix than to sandblast and repaint. It looks like its a bad paint prep job that is making the paint flake off.
__________________
Il faut de l'audace, encore de l'audace, toujours de l'audace

1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
San Rensho is offline   Reply With Quote
Old 04-08-06, 04:01 PM   #5
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,847
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
If the rust is mostly external, your frame is ok and the "damage" is mostly cosmetic. A repaint or cleanup and local touchup will be adequate If the rust has penetrated from the inside of the tubes, the frame is probably due for the discard pile.

Take a sharp nail or similar and poke around the chipped areas. If the metal is sound in those areas, you can safely restore the frame. if you feel soft spots or go through the tube wall, kiss the frame goodby.
HillRider is offline   Reply With Quote
Old 04-08-06, 04:08 PM   #6
enduro
Eschew Obfuscation!
 
enduro's Avatar
 
Join Date: Oct 2004
Location: over here!
Bikes: 2005 Rocky Mountain ETSX, Surly Crosscheck, 2000 Enduro Expert (sold), 1999 Rockhopper, 1984 Trek 520 (STOLEN-but recovered!), $7 rigid MTB from a police auction (broken, then stolen)
Posts: 591
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Pull the BB and check the inside of the chainstays for serious rust; a little surface rust isn't serious but now would be a good time to apply a rust preventative.
enduro is offline   Reply With Quote
Old 04-08-06, 06:02 PM   #7
Michigander
Senior Member
 
Michigander's Avatar
 
Join Date: May 2005
Bikes: Giant ATX 1200, Schwinn Peleton
Posts: 1,724
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 54 Post(s)
I know it sucks, but my best advise is that the only smart thing to do in the long term is to have it refinished. The cheapest way to go is to find somewhere in your area that does commercial acid dips. That will remove all paint and rust and cost 20 bucks or so. Then you can refinish it youself.
__________________
Bring back the Sig Test!


(\__/)
(='.'=)
(")_(")
Michigander is offline   Reply With Quote
Old 04-09-06, 12:27 AM   #8
Old Breadbutt
"not enough rage"
 
Old Breadbutt's Avatar
 
Join Date: Sep 2004
Location: Oakland
Bikes: Old ****ed up Cannondale roadie, peice o **** Gitane as a beater, and I use my Nishiki for bike camping
Posts: 273
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I used to work on a submarine. (I'm not bull****ing)
I had to spend hours chipping away rust and covering the area with a converter.

my point is this, first you'll need to get rid of any loose paint, it can hold moisture and cause new rust. second, you'll need to remove any excess or loose rust. this is often done with a hammer, but in the case of a bicycle frame you may want to opt for something less aggressive like a steel brush. once you have all the loose rust off, you can paint that surface with a special product that converts rust into a paintable surface. (not rust remover, NOT naval jelly)
I think Rust Knock Out is one of these:
http://www.rust007.com/knockoutabout.htm

I can't remember the name, but the product we used turned the rust black. after the rust has been converted you can prime and paint or do whatever you want to restore your bike, but either way, I'd make sure to seal the surface (as best you can) from further moisture (nothing is perfect or will last forever)
Old Breadbutt is offline   Reply With Quote
Old 04-09-06, 09:13 AM   #9
ken cummings
Senior Member
 
ken cummings's Avatar
 
Join Date: Dec 2005
Location: northern California
Bikes: Bruce Gordon BLT, Cannondale parts bike, Ecodyne recumbent trike, Counterpoint Opus 2, miyata 1000
Posts: 5,601
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The rust treatment advise sounds better than any I can give. For rust prevention there is a company in the San Francisco area that is giving away small promotional cans of a lubricant/rust preventer called Fluid Film. I am trying my can now. If you must remove the paint job there are several bike painting shops that could redo the same exact paint job.
ken cummings is offline   Reply With Quote
Old 04-09-06, 09:45 AM   #10
lmzimmer
Senior Member
 
Join Date: Aug 2004
Bikes:
Posts: 198
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
How old is the bike? Obviously an old friend. Consider giving it a place of honeor-like mounted on your living room wall (Talk with wife first) and inveting in a newer updated ride.
lmzimmer is offline   Reply With Quote
Old 04-10-06, 06:44 AM   #11
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,547
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
The rust converter mentioned is phosphoric acid, comes in many flavors. Body shops sell one brand, marine stores have a brand named Osphocote (I believe). Just look for a product whose active ingredient is phosphoric acid.

Phosphoric acid converts iron oxide (rust) into another compound, whose name escapes me at the moment, rendering it rust proof and stopping the cancer of rust. The most likely reason your paint flaked is because a good painter will treat a bare frame with a phospho acid etch before painting. Yours didn't.
__________________
Il faut de l'audace, encore de l'audace, toujours de l'audace

1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
San Rensho is offline   Reply With Quote
Old 04-10-06, 11:31 AM   #12
Dr.Deltron
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
Quote:
Originally Posted by Erik
Is there a way to save my frame without stripping the paint entirely? I really don't want to remove the paint because it is what makes the bike so special.
ANSWERS; Not really! Buy your beloved bike a new coat! The problem is likely to exist throughout the frame so new paint or powdercoat is your best bet. I could paint it for you, if you want to send it all the way to California!
Check with your local bike shops and see if they know of any bike painters closer to you than I am.
Cheers,
Dr.D.
  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 11:19 AM.