I have some questions about an old English frame that I bought recently, which is said to be from the 40's and said to be made of 531. I started a thread about it in C&V where you'll find some pictures, discussion, etc. but I think you can answer my questions without bothering with the photos. The seat post size is 27.0.
1. The steerer tube has an Accles & Pollock tubing stamp; was it normal to mix tubesets? Would you expect the rest of the tubing to be Accles & Pollock, or 531, or any random thing?
2. I'm taking all the paint off. It's mostly gone already. Can I expect to find tubing stamps on the other tubes? If so, where?
3. This frame has NO ventilation holes. No tiny little holes in the fork blades or stays, and even the main triangle tubes are sealed; the head tube is a complete cylinder with no access to top tube or down tube; likewise the BB shell has no openings to the seat tube, down tube, or stays; and the seat tube has no opening to the top tube. What does this tell you about the frame, its maker, or anything? Is this a bad thing?
4. It's a big frame; the seat tube measures 24" c-t. The frame weighs 71 oz, and the fork weighs 22 oz. Is that about right for 531 butted tubing?