My UO-8 with barcon cables routed between the rack and the cylindrical Bellwether front bag.
Hard to see, but cables routed to just past the start of the upbend bars, as others have reported, as well. Miine works beautifully with 2x6 gearing, non-indexed SunTour ratchet barcons, Shimano Titlist front derailleur, and SunTour Cyclone rear derailleur. When I worked at Bikecology, we set up a customer with a 3x5 (54-50-47/14-18-22-28-34), 1/3-step triple up front, SunTour VGT rear, SunTour Spirt (normal high) front, and then-new SunTour barcons.
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"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