I'm not an expert on these frames. My interest in this frame is to see how the ride and handling compare to my British, Italian, American, and other French brands from approximately the same time period.
I believe Peugeot called this a 21 inch frame. The seat tube measures approximately 52cm CTC. Top tube is approximately 55cm CTC. Seat tube angle is about 75 degrees. Front center is 57.5cm.
The restoration of this PX-10 frame has been moving slowly for a variety of reasons, but if it keeps snowing I might have the bike assembled this weekend!
