Bobet, Anquetil , Bahamontes, Aimar,Pingeon, , Janssen, Thevenet, Geminiani, Forestier, Darrigade, Robic, Mallajac,Lazarides, Mahe, Bauvin, Hassenforder, Stablinski, Riviere,and several other hundred 1950/60s Pros, together with several million Peugeots,Gitanes, Motobecanes, Lejeunes, Merciers, Starnords, Manufrances etc etc say that Mafac Racers and all their derivatives are not at all bad brakes.
It's just a matter of adjustment ...and anyone can descend the Galibier, or Mont Ventoux, just as those Pros did all those years ago.
Norris Lockley..Settle