The lines of the C-Record derailleur are smooth and pleasing with a consideration for aerodynamics (this was the time of Francesco Moser’s hour records). This is my favourite derailleur. Later versions had cut outs over the jockey wheels to aid the elimination of dirt, but in my opinion they aren’t as aesthetically pleasing. As a collection of derailleur’s I think they make a visually interesting series.
Only publicised to a few at the end of 1984, only made available to these few in 1985 and then only available to all in 1986 the delta brakes are as special today as they were back then. (In 1994 they disappeared from the Campagnolo line-up). The ‘delta’ brakes were actually described at the time as the ‘rocker brakes of the record group’ with the unusual feature being a central cable pull which not only provided superior aerodynamics but also beautiful aesthetics.
These brakes are more than just a bike component; they are a work of art and command a hefty price tag today (as they did back in the day), if you can find some for sale. The fact that many report they actually perform badly as brakes does not matter. The first prototype 1985 version were withdrawn. With 76 parts they are tricky to set up and breaking is reported as all or nothing with little modulation. Their poor performance is one reason why there were a confusing number of various prototypes and versions made, all of which adds to the mystique.
Looking back at peloton photos of the time and these beautiful brakes can be seen adorning the likes of Lemond and Fignon’s bikes.
In 2019 a teammate of mine fitted these brakes to his new steel TT bike and considered any aero penalty worth the statement they made, and he could knock out a sub-20 minute 10.