Help me repair a frame

[udallcustombikes]

I just got a Monark frame from a friend and the seat tube has pulled out of the bottom bracket. I know I could weld it back, but my little flux core wire welder makes a terrible mess with all of the splatter. I was thinking that brazing might be the way to go. I don't have a oxy-acetylene torch so I was wondering if I could do it with MAPP gas. I have some Safety-Silv 15, but it isn't recomended for ferious metals. Should I try it anyway or hit the welding store for some brass brazing rod? What kind of flux do I need?

I looked at Ponytailmike's thread in the How-To manual and watched several tutorial videos on youtube. I just don't want to mess the frame up. Any suggestions or tips would be helpful.

 

[Ratfink1962]

Cameron, I would go with brazing, you'll need brass rod of course, and for flux...

Flux

Airgas has it for something like $2.40

Or... you could just bring it by and use my mig, I will be home all day tomorrow.

 

[udallcustombikes]

Thanks Mitch. I have a meeting tomorrow so that won't work for me. I might try to catch you another time though.

 

[Ratfink1962]

Your welcome anytime.

Except next Saturday... family gathering thing

 

[user 135]

I had that same problem on an Elgin. I had a local frame builder fillet braze the joint as it was cracked all the way around. Fixed it like new plus it now matches the rest of the curvy joints.

 

[udallcustombikes]

That looks great!