Re: [CR] Seized Post, Parts - Coca-cola and other fluids ?


Example: Racing:Roger de Vlaeminck

Date: Sun, 31 May 2009 11:55:46 -0700
To: r cielec <teaat4p@yahoo.com>, Classic Rendezvous <classicrendezvous@bikelist.org>
From: Mitchell Gass <mitchell@gassworks.com>
In-Reply-To: <90831.33360.qm@web53609.mail.re2.yahoo.com>
References: <90831.33360.qm@web53609.mail.re2.yahoo.com>
Subject: Re: [CR] Seized Post, Parts - Coca-cola and other fluids ?


At 05:22 AM 5/31/2009, r cielec wrote:
>While I am searching the archives, I request your indulgence to
>simultaneously post this question to the list for the reason of urgency.
>
>This is the steel-alloy seizure condition. For reason of the
>metallurgical-chemical cause of the seizure, I vaguely recall that
>specific fluids were recommended. Was coca-cola one of the
>recommended fluids ? What are the recommended fluids ? The name
>Kroil comes to mind but, I am not sure if that was the medicine for
>rust or for this type of seizure also.

Sheldon Brown has some suggestions at

<http://www.sheldonbrown.com/stuck-seatposts.html>http://www.sheldonbrown.com/stuck-seatposts.html

Ammonia is one that's mentioned there and in the list archive. It works by dissolving the aluminum oxide, but it sounds like it's not a quick process. If you have a well-ventilated area, it may be possible to use stronger ammonia solutions; one message mentioned a 10% janitorial-strength solution available at Ace Hardware; another mentioned that very strong solutions are available from blueprint supply houses.

The dry-ice idea sounds especially cool ;-)

Mitchell Gass
Berkeley CA USA