Originally Posted by
rhenning
My January 1974 P10-9 uses drop bolts front and rear with the Campy brakes. Original owner alternated between tubular tires for racing and 27" rims for touring. That may be why the were used. Roger
Roger, the P10 was a touring model (like the P15) with optional fenders, so that might be another reason drop bolts were used (to get the brakes low enough since they were built with clearance for fenders).