Apparently my dave moulton is made from PS tubing ("the Pista Sprint track tubeset") according to Dave. Very few references to Columbus PS in the archives. If the tubeset was designed for track it doesn't seem to have been very popular at least based on the few mentions of it. Or is that a wrong impression? Where does Columbus PS fit into the scheme of things? BTW, mine isn't a track bike but a " pro criterium" model. Angel Garcia, still collecting stuff to built it up Long Valley, NJ