Elev12k":29tvgno4 said:
Sastus,
With all respect, but removing post and rust treatening should be main focus now. What's inside, that counts

Seriously, steel frames with tubing that thin can have an issue especially when posts are seized etc.
Hi,
Yes, I know, I seem to have confidence that the frame is going to be fine, hence why I said I would wait and see how it looks when I build it back up before deciding.
There was some rust and dirt inside, usual amount for a used steel frame (about a tablespoon), rest of the tubes will be fine. (they are sealed after all)
Another person used this frame for a few years, I ended up with other more desireable bikes, and during that time he had a habit of putting the seat up and down while mountain biking in all conditions, then for the last year didn't touch the post, I am under the impression that this is the main cause of the alloy post corroding and seizing into the steel frame, lack of grease and a scoured alloy post.
I think the lip seal on the seat collar also kept a lot of crud and water out of the seat tube.
The seat post was a 400mm odd basic, seized down to the F in Fat.
I am going to fill the seat tube with Cola tommorow and leave it for a few days, failing that I will put tape round one end of a hacksaw and carefully cut a few slots down the inside of the alloy post, then gently clean, polish and rust proof the seat tube internals.
I have done this successfully on a few frames, inc a friends Stumpy M2.
Steve