After the Combi 12 and the two Archery’s, the 1967 Archery-W was Shimano’s fourth parallelogram derailleur, and was complementary to the other three. It had an unsprung parallelogram, and used two cables, in the style of the 1966 SunTour Competition Twin.
Shimano marketed this system, which they called ‘W’, as a commuter product with a twist grip shifter. With this focus and its double cable, I see the Archery-W as the first ancestor of the Positron system - and so as the godfather derailleur of Shimano index systems.
This example has the shorter hanger of the standard Archery but the 10 tooth pulley wheels of the ‘Wide’.
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