"Chain the bike frame to a solid foundation, like a street light
Chain the seat post to the back of your car
Floor it
___
Don't do this
Some people!"
VIK this reminds me of a story about a guy in the town of New Bedford Massachusetts . a man tied a 100' rope to a light pole got in his car tied the rope around his neck and floored it , no kidding true story as sure as the sun will rise you can guess what happened next
P.S. he didn't use the brakes
If you heat that thing almost red the entire 5-6" . Not just on the top Then twist it a few times with a pipe wrench A.K.A. Stilson Don't worry about the paint we are past that if you want it out thats what you have to do a little heat just on the top isn't going to do it You gotta rose bud that *****, I work with steel every day.What you see in the pic is an aluminum tube with ridges. I tried to get some silicone grease in between the seat tube and that aluminum tub then gripping it with a clamp and then hitting it with a hammer from the bottom. Tried heating it as well. It's in a good 5-6 inches and is just not budging.
I think if aside of all the ideas and of course also getting a mill and jigging it up to take out just the post, maybe leaving it in. What I mean is using it in some way to clamp something that post sticking out. Then laterally forward or aft have a metal connection that has another seat post that can move a small amount up or down. Kind of analogous to those lay back seat post setups.
It may not be what you want or have room to work, but maybe?
If cutting out the frame portion and welding back in a new section can be done by you or economically some how, throwing out the frame would not be necessary. I've welded a bit, but not brazed or used a torch. My MIG has some limitations.
MT