The Gran Sport at least uses an angled pushrod, which causes the cage to rise slightly as it moves outward. The angle appears optimized for the 2- to 4-tooth half-step drop which was still popular in 1960. The Simplex pushrod operates horizontally. Unfortunately, I had to scrap the Gran Sport which came with Capo #1 because the body was so excessively worn that the rod would no longer track properly -- one or more previous owners evidently had neglected to lubricate it. Capo #2's original Gran Sport derailleur set is in great condition, which is anothe reason I bought the bike.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069