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[Tony T]

I've used Grabit (http://www.amazon.com/Alden-8440P-Grabit-Damaged-Extractor/dp/B001A4CWHO/ref=sr_1_1?ie=UTF8&qid=1365358874&sr=8-1&keywords=easy+out+screw+extractor) to extract broken bolts/screws. If you do use this, remember to put the drill in reverse to drill the hole. I would also put some liquid wench (http://www.amazon.com/Gunk-Liquid-Wrench-4-Oz/dp/B00002N6TS/ref=sr_1_sc_3?ie=UTF8&qid=1365359148&sr=8-3-spell&keywords=liquid+wench) on the bolt.

[velomateo]

When you cut the head off the bolt you removed the best area to drill. The allen head keeps the drill from wandering around. But now that the head is removed, if you can get ahold of the bolt, you may be able to thread it all the way through...instead of backing it out.

[toytech]

When drilling broken screws I use a drill guide and start with the smallest drill bit for a pilot hole, then move up incrementally. Good quality bits are a must and lots of oil. Also don't let the bit get too hot or you will blunt the tip.

[cmbicycles]

The type of bit depends on the material the bolt is made of. I guess the bolt was stuck in there, or was the bolt head rounded off... Or both? You may want to try soaking it in penetrating oil, and use some oil or cutting fluid when drilling it out. Usually the solution to just drill it out doesnt work as well as using a drill and extractor of some sort, at least in my experience. Left handed bits often work well as they twist the bolt out as you drill, have to run the drill in reverse obviously.

Post a pic or two and you will likely get some helpful suggestions... probably some unhelpful ones too:rolleyes:

[Tony T]

The OP posted pic's here (http://forums.thepaceline.net/showthread.php?t=127205)

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[Tony T]

What does it look like now?

[ultraman6970]

That's quite a interesting set up to say the least. Wonder if the guy brazed the female side inside or something.

I would try the special bit somebody mentioned just to start, then figure it out how the thing works because it puzzles me a little bit because the other side have no exit hole. The try to find the fastest, simplest solution to your problem.

[cmbicycles]

That's certainly odd looking. The threaded section doesn't turn? It looks like it has a hole through it that may have been to tighten it into the frame? Maybe it was brazed in there though, if that's the case it's nothing a combination wrench in the right hands won't fix (combination oxygen acetalyene)

[ckamp]

Neat design, good luck! I woudnt drill through to the other side. Can you soak this thing upside down for a day or so in something?

[cmbicycles]

I would think it was threaded on the inside... try soaking a few days, and using some heat on it to try to spin out that threaded stud.

[ultraman6970]

Looking at that thing better looks like the thread section goes all the way from one stay to the other one to avoid stressing the seat stays.

Always you can try to dremel that to carve a flat section to use a drill with a flat bit in there and pull it out that way.

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[Louis]

Thinking outside the box, you could braze one of those old-style seatposts (the kind that's just a "pipe" with no top) permanently into place then use a saddle that works with this sort of clamp (e.g. Brooks)

http://abbotsfordcycles.com.au/images/clamp%20byb101.jpg

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[weaponsgrade]

Maybe try to file down the sides of the bolt to give you some clamping surface for a wrench.

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[Louis]

If you really want to remove what's left of the bolt as safely as possible the best solution is to take it to a machine shop. They'll clamp the frame in place on a milling machine and have the bolt out in no time.

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[Louis]

The only issue would be cost - how much time and money do you want to put into this project? That's a rhetorical question, and you don't really need to answer, but it's worth thinking about, given how much or how little the frame may be worth to you.

I have no idea how someone would charge - they might be able to give you a guesstimate over the phone.

Good Luck

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[ultraman6970]

U got it for the right price. worth to spend a tiny bit to get it back from the dead IMO.

The main problem with old frames is that, the right price.

[bart998]

Take it to a local frame builder or a good shop that can make frame repairs... that looks like it needs to be heated-up and removed. Then a more conventional seat binder can be put in.