I think you would find that the metric gauge 531 tubeset was lighter than the Columbus tubesets of the era, or even the the English gauge 531 tubesets. Plus the Delrin components were definitely lighter. All bike makers may have lied about the weight, but I'm pretty confident the PX-10 was lighter than just about any Campy-equiped Italian bike of the era. I can tell you for sure my PX-10's are noticeably lighter than my two early 70's all-Campy chrome Paramounts.
Three posts today, by the common sense definition of from getting up until going to bed, and I'm done. Good night all.
Regards,
Jerry Moos Big Spring, TX
Bianca Pratorius <biankita@comcast.net> wrote: I am one who likes the frilly lugs, the functional but not pretty Mafac brakes and levers, and the idea of French thread creating its own market for parts. I like the Lion logo and the overall color scheme. I like the look and the mystique, but I can not believe that the bike weighed less than a comparable Italian bike of the same period. OK, so the PX-10 is quoted as weighing 21.5 lbs, but I have and have seen lots of English and Italian and Japanese bikes of that era weigh the same. 21.5 pounds is a low average but it is still well in the spectrum of average. Perhaps the PX-10 frame was not even a light one after all, because the Delrin parts contributed to making the bike lighter too, so if the bike still only ended up weighing 21.5 lbs. than perhaps you could say that the PX-10 frame was a little heavier and the parts were a little lighter.
Garth Libre in Miami Fl.