webmaster@campyonly.com sends these photos of his beautiful Colnago tandem.  Campy doesn't make tandem gruppos any more, but here is an excellent example of a classic Italian tandem decked out in classic Campy gear.  Note that Kevin uses a pair of Record sidepulls to provide all the stopping power--not quite the brake setup we would choose, but it must work . . .  Also note the Super Record crankset, which is the later, non-fluted design with the laser-etched Campagnolo logo.  One school of thought holds that this style of crankarm is stronger, but we've personally never seen a broken SR crankset of any kind.