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 07-21-04, 01:48 AM   #1
poululla
Great guy
Thread Starter
 
poululla's Avatar
 
Join Date: Apr 2002
Location: Denmark
Bikes:
Posts: 397
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This picture is of the underside of my father's De Rosa Planet downtube. What is it, and should he be worried? The bike has never been in a crash, if that helps. Comments are as always very welcome
poululla is offline   Reply With Quote
Old 07-21-04, 01:59 AM   #2
NZLcyclist
MaNiC!
 
NZLcyclist's Avatar
 
Join Date: Feb 2003
Location: Hamilton, New Zealand
Bikes: 2004 Cervelo Soloist 105, 2005 Apollo Apex, 2006 SCOTT Speedster S30
Posts: 1,600
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
uhhhh is it steel? that looks like rust under the paint......
NZLcyclist is offline   Reply With Quote
Old 07-21-04, 02:16 AM   #3
poululla
Great guy
Thread Starter
 
poululla's Avatar
 
Join Date: Apr 2002
Location: Denmark
Bikes:
Posts: 397
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by NZLcyclist
uhhhh is it steel? that looks like rust under the paint......

A De Rosa Planet is an aluminium bike if you cared to check. If this is indeed a form of oxidation, is the integrity of the frame affected at all ?- only serious answers please. Watch the Boks beat the pants of the All Blacks this weekend

Last edited by poululla; 07-21-04 at 02:29 AM.
poululla is offline   Reply With Quote
Old 07-21-04, 03:00 AM   #4
pucci
Senior Member
 
Join Date: Oct 2001
Location: Tokyo, Japan
Bikes:
Posts: 95
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by poululla
A De Rosa Planet is an aluminium bike if you cared to check. If this is indeed a form of oxidation, is the integrity of the frame affected at all ?- only serious answers please. Watch the Boks beat the pants of the All Blacks this weekend
You are looking at aluminum oxide powder under the paint. Lots of al frames get this around the braze-ons and other spots where moisture can get under the paint. There is no structual problem, just a bad skin condition.
pucci is offline   Reply With Quote
Old 07-21-04, 03:06 AM   #5
poululla
Great guy
Thread Starter
 
poululla's Avatar
 
Join Date: Apr 2002
Location: Denmark
Bikes:
Posts: 397
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for your reply Pucci, we thought along the same lines, but now we are sure. You were a great help.
poululla is offline   Reply With Quote
Old 07-22-04, 05:33 AM   #6
Big H
Senior Member
 
Join Date: Jun 2003
Location: Aliwal North, Eastern Cape, South Africa
Bikes: el rapido road Tandem, Raleigh R6000 Road Tandem, Omega Vectra MTB Tandem, Gary Fisher Tassajara, Carerra MTB, Trek 7200 Hybrid
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
RuA Bok fan. Not only am I a Bok fan and supporter I am a Blue Bull supporter as well!!!!

Big H
Big H 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 01:50 PM.