Okay... what the heck do I do now?

[GiovanniLiCalsi]

Just a thought....
Possibly position the frame on its right side and pour in some derusting liquid.

 

[THE STIG]

.....

 

[redline1968]

Heat the hangar with a torch around the it but first spray oil and clean the exposed threads... The heat will expand the hangar and release the cup from the rust. While hot (use a punch/ something sharp) tap the broken cup ( at a angle) in the direction it needs to unscrew.

 

[49autocycledeluxe]

still stuck?

 

[49autocycledeluxe]

PB Blaster from your local Auto Parts or hardware store is good at loosening rusty things

 

[Andrew Gorman]

I'd definitely try the penetrating oil/heat treatments for a while before trying anything more. The idea to drill a couple of holes for a pin spanner is a good one. If the cup is hardened you might have to grind the holes through. The little Park tool is not sturdy enough for this job, and the prongs on other pin spanners won't be long enough to clear the crank. I have made my own out of Unistrut and grade 8 bolts- here is a picture of the rig I made to unscrew a chainring. Scroll down to post #31...:

Ca. 1937 Adler Dreigang / 3-Gang German bottom bracket 3 speed | Project Rides

Dang!

thecabe.com

 

[Andrew Gorman]

Looking at your picture it might help to offset the pin bolts in the unistrut (there's room) and set them back far enough that the end of the unistrut can be u-bolted to the crank for more stability. Just an idea, if the crank spins more or less freely. Slipping tools are no fun for the tool, the workpiece or the operator!

 

[t.c.815]

it appears to be the bearing race that is broken,the bearing cup is pressed in first. clean up the mess .heat the broken piece with a propane torch until red
hot use a ice pick to push the broken piece to the center,as soon as you have enough of it in the center grab with a pair of pliers and pull out the broken part, good luck,
the torch won,t damage any other part,

 

[49autocycledeluxe]

I think he sold the bike and now has a different hobby.

 

[lgrinnings]

Thanks everyone! It's out. I did take a break because I couldn't get that foolish piece of cup to turn no matter what I tried. Ultimately I backed out the other cup, heated the bottom bracket with a torch and tapped it out from behind from the chainring side. Fun stuff. Now to look for a replacement cup in my dad's stuff...