z979":3qjz2aqs said:Titanium was used on the SR rear mechs only (apart from for the axles in rare bottom brackets). I think the use of alloy brake shoes occured around the time of the second generation 'triangulated' brake calipers I'm not sure they were avaialble any earlier than that. The difference, to my understanding, between NR and SR brakes was indeed down entirely to the brake levers -- drilled for SR, plain for NR with the campag logo boxed, and plain on GS levers without the box.
z979":2pico72f said:I think alloy shoes on early calipers is a case of after the event tuning and I'll tell you why. From my experience, alloys shoes are only ever plastic dipped. Plastic dipped shoes (on steel ones originally and on all subsequent versions) were introduced to meet US safety regulations together with a curved quick release cam (and a lip on the front mech cage). So when I see a caliper with a straight quick release and dipped alloy shoes I think tuning.