Ok, Cunning Plan #2
Front:
Cyclo Benelux lever or Simplex Competition lever - don't need to change any braze-ons
Simplex Retrofriction (1973) RH shifter - may need to rethread braze-on. Not very period but good
(Cottered BB + Stronglight Competition 55) or (new BB + Stronglight 49D)
TA Cyclotourist rings: 50/34 probably but could reduce 50 and just ride slower
Rear
.
The only real problems I can see are
some parts are relatively rare
periodish RDs don't have much wrap
.
RD max cog 28 seems ok for the period - Campy Gran Sport were doing 26T spec / 28 usually.
RD wrap is the issue - Campy Gran Sport is around 20, the plan above needs around 14+16 = 30.
Simplex 303 Tourist (54-58) might work: max cog 28, wrap 34.
Or there are several long cage mods to Campy Record / Nuovo RDs.
Anybody want to suggest alternatives for
front RH shifter
RD
.
Obviously I could just use a SunTour Cyclone but I'm thinking of being relatively correct period wise.