On the 1979 Claud Butler tandemI recently acquired there are Mafac cantilever brakes and a Phil Wood rear disc. The three brakes are controlled by 2 brake levers. Not unusual for the time. The weird thing is the brake levers are Campagnolo Nuovo Record. They appear to be factory made and not a modified set from a half bike. I know of Campy tandem cranksets but this is a new one for me. Anybody else ever see one? If not I will assume it was somehow locally modified.
Len Diamond
Ridgewood, NJ