that's a really cool PY-10, but I think no bike in the on-topic era weighed less than 19 lbs in its production configuration. In fact, the catalogue page you display on wooljersey actually says (9-9.5 kg), which would be 19.8 - 20.9 lbs.
Can ANY CR members name an on-topic catalogue bike that tipped the scales in the 18 lbs range ?? That's an interesting question for the list.
- Don Gillies
San Diego, CA, USA