Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

little paint bubbling .. ways to fix? dont bother? advice wanted

Search
Notices
Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

little paint bubbling .. ways to fix? dont bother? advice wanted

Thread Tools
 
Search this Thread
 
Old 04-24-21, 02:05 PM
  #1  
tendency
Full Member
Thread Starter
 
Join Date: Jul 2008
Posts: 451
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 236 Post(s)
Liked 171 Times in 104 Posts
little paint bubbling .. ways to fix? dont bother? advice wanted

Hey all - got just a little paint bubble around the seatpost lug on a bike. Should I bother trying to fix it? Leave it alone? How would you repair? Thanks!

tendency is offline  
Old 04-24-21, 02:14 PM
  #2  
browngw 
Senior Member
 
browngw's Avatar
 
Join Date: Mar 2012
Location: Port Dover Ontario Canada
Posts: 1,543

Bikes: 1965 Dilecta Le Blanc, 1956 Royal Nord, 1972 Raleigh Sports, 1972 CCM Turismo,1976 SuperCycle Excalibur, 2014 Salsa Vaya, 2017 Felt DD70, 2019 Giant Lafree and others

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 351 Post(s)
Liked 590 Times in 228 Posts
I would carefully scrape out (utility knife blade works well) the bubbled area, inspect for damage and treat with a rust remover on an artists brush. Then I would paint or lacquer the area with a matching colour.
__________________
We are what we reflect. We are the changes that we bring to this world. Ride often. -Geo.-
browngw is offline  
Old 04-24-21, 02:17 PM
  #3  
iab
Senior Member
 
iab's Avatar
 
Join Date: Jun 2006
Location: NW Burbs, Chicago
Posts: 12,054
Mentioned: 201 Post(s)
Tagged: 0 Thread(s)
Quoted: 3015 Post(s)
Liked 3,802 Times in 1,408 Posts
That is rust. It will grow proportionately to the moisture exposure it receives. If the bike is in Tucson, growth will be minimal. If the bike is in the Keys, it will get out of hand.

To remove the rust, since it is so minimal, I would use an x-acto knife. Yes, it will remove the paint too.
iab is offline  
Old 04-24-21, 02:42 PM
  #4  
SurferRosa
señor miembro
 
SurferRosa's Avatar
 
Join Date: Dec 2018
Location: Pac NW
Posts: 6,623

Bikes: '70s - '80s Campagnolo

Mentioned: 92 Post(s)
Tagged: 0 Thread(s)
Quoted: 3886 Post(s)
Liked 6,480 Times in 3,206 Posts
I would mask it off and cover it with clear nail polish.
SurferRosa is offline  
Old 04-24-21, 02:46 PM
  #5  
AlmostTrick
Tortoise Wins by a Hare!
 
AlmostTrick's Avatar
 
Join Date: Feb 2006
Location: Looney Tunes, IL
Posts: 7,398

Bikes: Wabi Special FG, Raleigh Roper, Nashbar AL-1, Miyata One Hundred, '70 Schwinn Lemonator and More!!

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1549 Post(s)
Liked 941 Times in 504 Posts
If I really liked the bike I'd sand blast and powder coat it, otherwise nothing.
AlmostTrick is offline  
Old 04-24-21, 02:48 PM
  #6  
jdawginsc 
Edumacator
 
Join Date: Jan 2018
Location: Goose Creek, SC
Posts: 6,803

Bikes: '87 Crestdale, '87 Basso Gap, '92 Rossin Performance EL-OS, 1990 VanTuyl, 1980s Losa, 1985 Trek 670, 1982 AD SLE, 1987 PX10, etc...

Mentioned: 59 Post(s)
Tagged: 0 Thread(s)
Quoted: 2439 Post(s)
Liked 3,122 Times in 1,964 Posts
That’s a relatively easy nail polish color to source...scrape off, did in some evaporust for 8 hours, rinse dry and paint it.

i wouldn’t go crazy scraping too much off.

you could also do the clear nail polish thing and hope it doesn’t spread.
__________________
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super












jdawginsc is online now  
Old 04-24-21, 02:52 PM
  #7  
noobinsf 
Senior Member
 
noobinsf's Avatar
 
Join Date: Sep 2005
Location: Oakland, CA
Posts: 3,265

Bikes: '82 Univega Competizione, '72 Motobecane Grand Record, '83 Mercian KOM Touring, '85 Univega Alpina Uno, '76 Eisentraut Limited

Mentioned: 57 Post(s)
Tagged: 0 Thread(s)
Quoted: 1088 Post(s)
Liked 1,205 Times in 701 Posts
Is that a Konno Allez or something? Nice looking lug. Like others have said, take the paint off that spot and treat the rust, then spot paint or cover with clear polish to protect it. Also, closely inspect the frame for any other spots. I just had a very nice frame bead blasted that had suffered from previous owners ignoring the growing rust. Pitting in multiple spots — don’t let that happen to this one!
noobinsf is offline  
Likes For noobinsf:
Old 04-24-21, 02:55 PM
  #8  
tendency
Full Member
Thread Starter
 
Join Date: Jul 2008
Posts: 451
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 236 Post(s)
Liked 171 Times in 104 Posts
Originally Posted by noobinsf
Is that a Konno Allez or something? Nice looking lug. Like others have said, take the paint off that spot and treat the rust, then spot paint or cover with clear polish to protect it. Also, closely inspect the frame for any other spots. I just had a very nice frame bead blasted that had suffered from previous owners ignoring the growing rust. Pitting in multiple spots — don’t let that happen to this one!
It is indeed a 3rensho Allez so yeah, I want to take care of the frame
tendency is offline  
Old 04-24-21, 04:33 PM
  #9  
merziac
Senior Member
 
merziac's Avatar
 
Join Date: Oct 2015
Location: PDX
Posts: 13,038

Bikes: Merz x 5 + Specialized Merz Allez x 2, Strawberry/Newlands/DiNucci/Ti x3, Gordon, Fuso/Moulton x2, Bornstein, Paisley,1958-74 Paramounts x3, 3rensho, 74 Moto TC, 73-78 Raleigh Pro's x5, Marinoni x2, 1960 Cinelli SC, 1980 Bianchi SC, PX-10 X 2

Mentioned: 267 Post(s)
Tagged: 0 Thread(s)
Quoted: 4511 Post(s)
Liked 6,378 Times in 3,667 Posts
Originally Posted by tendency
It is indeed a 3rensho Allez so yeah, I want to take care of the frame
Dupli-color auto touch up paint comes in a bottle that has a fiberglass pinpoint tip for cleaning, smoothing and feathering chips and scratches that works great for lug lines and comes in several shades of red, should be able to get pretty close. I would buy the closest 2 and maybe mix and match to get there.

I always get it to room temperature and shake very well.

A bit spendy at $16-20 a pop but then you have auto quality paint.
merziac is offline  
Old 04-24-21, 04:49 PM
  #10  
tendency
Full Member
Thread Starter
 
Join Date: Jul 2008
Posts: 451
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 236 Post(s)
Liked 171 Times in 104 Posts
Originally Posted by merziac
Dupli-color auto touch up paint comes in a bottle that has a fiberglass pinpoint tip for cleaning, smoothing and feathering chips and scratches that works great for lug lines and comes in several shades of red, should be able to get pretty close. I would buy the closest 2 and maybe mix and match to get there.

I always get it to room temperature and shake very well.

A bit spendy at $16-20 a pop but then you have auto quality paint.
Thanks .. can't remember where but someone else recommended duplicolor - I'll check it out.
tendency is offline  
Old 04-24-21, 04:56 PM
  #11  
merziac
Senior Member
 
merziac's Avatar
 
Join Date: Oct 2015
Location: PDX
Posts: 13,038

Bikes: Merz x 5 + Specialized Merz Allez x 2, Strawberry/Newlands/DiNucci/Ti x3, Gordon, Fuso/Moulton x2, Bornstein, Paisley,1958-74 Paramounts x3, 3rensho, 74 Moto TC, 73-78 Raleigh Pro's x5, Marinoni x2, 1960 Cinelli SC, 1980 Bianchi SC, PX-10 X 2

Mentioned: 267 Post(s)
Tagged: 0 Thread(s)
Quoted: 4511 Post(s)
Liked 6,378 Times in 3,667 Posts
Originally Posted by tendency
Thanks .. can't remember where but someone else recommended duplicolor - I'll check it out.
Anytime, most of the chain auto parts carry it. The fiberglass brush cleaner tip can be a game changer. I used them to clean up eyeglass frame solder repairs where I worked long ago, they were a bigger better version but these can work wonders with some patience and they will clean the rust without subjecting the rest of the paint to chemicals.
merziac is offline  

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



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.