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 10-19-07, 03:13 PM   #1
llamer
Junior Member
Thread Starter
 
Join Date: Aug 2004
Bikes:
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
caustic lye and alloy (last time I ask this, I swear)

I just want to know if the caustic lye (NaOH) will mess up my choice cro-mo steel frame when I put it in there to dissolve the aluminum seat post that is royally stuck inside her. Buddy says alloy is different than elemental metal but a jar of draino, which contains NaOH says to keep away from chrome, and as we know there is a fair bit of chrome in that steel frame. But is she locked away chemically inside that iron, or will she be lured by the temptuous and exciting sodium hydroxide, corrupting the structure of my beloved Japanese Lugged Mountain Frame? Any inorganic chemists in the house? Please share. Many thanks, and sorry for bringing this up again but the search engine isn't even giving me a straight answer (people who had gone the way of Lye did so on high-tensile frames which of course contain no cromium).
llamer is offline   Reply With Quote
Old 10-19-07, 03:41 PM   #2
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)
The NaOH won't hurt the steel (Cr-Mo notwithstanding, the warning is about chrome plated parts.) and it will dissolve the aluminum.

BTW. one of the byproducts of the reaction between Al and NaOH is gaseous hydrogen so do this outside!

I assume you are aware of the hazards of handling NaOH and will take proper personal precautions.
HillRider is offline   Reply With Quote
Old 10-19-07, 03:46 PM   #3
llamer
Junior Member
Thread Starter
 
Join Date: Aug 2004
Bikes:
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yeah definitely, H2 gas, that's the best part! it's gonna be awesome
llamer 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 03:12 AM.