Well the galv can is already tinned at the joint, hence is was soldered already. I did get the outside cleaned up and soaped down with a pressure test with a hand bike pump.
I found a rubber bung with a small hole in it, it mated well with a sports ball air filling needle.
It was under size, so I wadded up a shop towel around it and taped it on for a seal.
I wetted it down with some dish soap and slow pressure to find the leak...
I also checked and cleaned the petcock if that was an additional leaking source, but not so.
It bubbled and revealed a tiny tiny pin hole. The rest was in very good shape...
I was going to use the hand copper with the forge to solder, but I cant seem to find any locally available Sal Ammoniac tinners block. I used to use this for when I made all the hand soldered products at the sheet metal factory I used to work at... But theyre retail store doesnt sell it anymore.... It helps to tin the sharpened copper after being heated, cleaning off the oxides and allowing it to accept the layer of solder onto it...
With this being said... I resulted to trying my electric soldering iron, and my pinetree resin soldering flux. and it worked....
I heated with the heat gun to dry it off from soaping it down. Dabbed on some resin and used some 50/50 solder.... IT actually worked, somewhat decent looking too.
I did another soap test.. no bubbles.... NICE....
Only leak was from the bung at the needle...
Been kinda bugging me all night on how to get this fixed...
Later Ill see how it works out on the bike.... But at least I got this now under my belt.. good times...