brazing a corrosive piece of metal

By etbwd Date 07-16-2010 20:41 Edited 07-18-2010 03:55

ok-need some help guy's and gal's...i have a jeep bicycle for 9 years-it's very special to me-last year it was tig welded and turned out well-but over the years it became corrosive-on the rear end of the suspension,right where the front derailluer goes...now i dicided that brazing would be the best way to go-now how will i do this-small hole 2x2 and alittle crack beside a small hole...i'm trying to see what type of metal to use-stainless steel or aluminum to place over the hole and then brazing it together-ANYBODY YOUR HELP IS NEEDED-please read following post-I THINK I MAY JUST FILL IN THE HOLE-WILL ALUMINUM OR NICKEL BE BEST

By DaveBoyer (*****)

Date 07-17-2010 02:36

What material is the frame made from?

How are the tube end fittingss attached?

Do You have dissimilar metals where the corosion is taking place?

If so, they are causing a galvanic cell, which greatly accelerates corosion.

Dissimilar metals need to be electricly insulated from each other, or sealed from salt water/salt air or any electrolite.