Tube ID help needed
Just going through an old tube set my brother Jerry gave me. I recall him telling me it to be a full 531 set from the 80's and some Columbus tubing as well. I need a tube ID. There is no manufacturer stamp either end of the tube. Unfortunately I cannot get a picture so it will be a manual description only.
The tube is chain stay length 48cm, tapered to about 11 mm on small end and 22 mm on large end. Tube is completely round with a tapered length. The odd thing is the 22mm end is drawn down from the 24mm section before it. The 22mm end is about 35mm in length.
So picture it like this: small end starts at 11mm and tapers up to 24mm, then abruptly is squeezed down to a 22mm round section 35mm long.
If I recall correctly Jerry was going to build a track frame so could this be a chain stay or fork tube from a track tube set?