The current issue of Bicycle Quarterly highlights a 1954 Alex Singer
which features a pair of trimmed-down and smoothed Mafac Racers. See:
http://www.flickr.com/
I'm just curious if there ever was much of a precedent for "tuning" these brakes? The later Racers I've encountered mostly had excess mold material just begging to be re-worked... I'll be taking a file and production cloth to a pair tonight!
=- Joe Bunik
Walnut Creek, CA