Metacortex
Wore out three sets of tires already!
Lee, I'm pretty sure that the '64 Sierra with it's 30t freewheel came with the larger chrome plated steel protector that the other '64 derailleur equipped bikes also came with.
That is true, in '64 Schwinn introduced the 7.5" chrome steel spoke protector. This means that the small alloy Huret protectors were only used from mid-'61 to '63 on bikes with Huret derailleurs.